CN204304866U - A kind of motor step-down energy-saving control device - Google Patents
A kind of motor step-down energy-saving control device Download PDFInfo
- Publication number
- CN204304866U CN204304866U CN201520011571.5U CN201520011571U CN204304866U CN 204304866 U CN204304866 U CN 204304866U CN 201520011571 U CN201520011571 U CN 201520011571U CN 204304866 U CN204304866 U CN 204304866U
- Authority
- CN
- China
- Prior art keywords
- resistance
- controllable silicon
- circuit
- operational amplifier
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model relates to a kind of motor step-down energy-saving control device, and it comprises pressure regulation governor circuit, testing circuit and dsp control signal and produces circuit; Pressure regulation governor circuit is connected to three-phase main power source by circuit breaker Q, also produces circuit with testing circuit, dsp control signal respectively and controlled electric electromechanics is connected; The access of pressure regulation governor circuit is by the three-phase circuit of controlled motor; Testing circuit comprises voltage zero-crossing detector, current zero crossing detector and motor speed detector; Dsp control signal produces circuit and comprises dsp controller, power amplification and photoisolator and signal feedback device.The utility model reasonable in design, has Control of Voltage and stablizes, and sensitive to load variations, antijamming capability is strong, and cost is low, the obvious advantage of energy-saving effect, effectively can solve in voltage-reducing and electricity-saving process and easily cause vibration to cause motor to run unstable problem.
Description
Technical field
The utility model relates to motor technology field, particularly relates to a kind of motor step-down energy-saving control device.
Background technology
As the threephase asynchronous of each department being widely used in national economy, consume 60% ~ 70% of national industrial total electricity consumption, occupy an important position in the industrial production.But, the capacity of threephase asynchronous is generally that the maximum load dragged with it matches in a device, so that in actual use, most of motor is often in underloading, even unloaded lower operation, as the equipment such as punch press, press, drilling machine, blower fan, belt conveyor that factories and miness are conventional.Within most of running time, the load change of these equipment is all comparatively large, and average output power is generally 0.3 ~ 0.4 with the ratio of its rated output power, and what have is also lower.For long-term light running or the wider asynchronous motor of load excursion, its power factor (PF) is very low, consumes a large amount of reactive powers, there is very large economize on electricity space.
The most frequently used power-saving method of threephase asynchronous is frequency control economize on electricity and voltage-reducing and electricity-saving two kinds of methods.
Frequency control battery saving arrangement adopts and changes alternating current voltage frequency to realize the reduction of speed of motor energy-conservation, but reduction of speed is energy-conservation can reduce production efficiency of equipment as a rule, changes equipment working condition, is not therefore allowed to.
Voltage-reducing and electricity-saving technology adopts and controls bidirectional triode thyristor angle of flow reduction feeding electric motors voltage, thus reduces the way of motor reactive loss, reaches the object of economize on electricity.This technology does not change the rotating speed of motor, and method is simple, and cost is low, successful, can reach 40% when zero load.But few to the sampling of the parameter of motor in prior art, control strategy is simple, Control of Voltage poor stability in causing motor to run, follow in control procedure load variations delayed many, easily cause vibration, cause the various problems such as motor fluctuation of service.
Summary of the invention
For the problems referred to above, the utility model provides a kind of reasonable in design, has Control of Voltage and stablizes, and sensitive to load variations, antijamming capability is strong, and cost is low, energy-saving effect obvious motor step-down energy-saving control device.
The utility model is achieved through the following technical solutions:
Above-mentioned motor step-down energy-saving control device, comprises pressure regulation governor circuit, testing circuit and dsp control signal and produces circuit; Described pressure regulation governor circuit is connected to three-phase main power source by circuit breaker Q, also produces circuit with described testing circuit, dsp control signal respectively and controlled electric electromechanics is connected; Described pressure regulation governor circuit access is described by the three-phase circuit of controlled motor; Described testing circuit comprises voltage zero-crossing detector, current zero crossing detector and motor speed detector; Described voltage zero-crossing detector and current zero crossing detector be attempted by described by a certain phase main circuit of controlled motor and one end access described dsp control signal produce circuit; Described motor speed detector is arranged on and described the main shaft of controlled motor is also produced circuit with described dsp control signal and is electrically connected; Described dsp control signal produces circuit and comprises dsp controller, power amplification and photoisolator and signal feedback device; Described dsp controller is electrically connected with described voltage zero-crossing detector, voltage zero-crossing detector, motor speed detector respectively; Described signal feedback device is connected described dsp controller with described power amplification and the equal one end of photoisolator, and the other end connects described pressure regulation governor circuit.
Described motor step-down energy-saving control device, wherein: described pressure regulation governor circuit is made up of three road voltage regulator control circuits, namely comprises first, second, third voltage regulator control circuit; Described first, second, third voltage regulator control circuit accesses respectively and is describedly connected+5V power supply by the three-phase circuit of controlled motor and equal one end, and the other end is connected to described by a wherein circuitry phase of controlled motor; Described first, second, third voltage regulator control circuit structure composition is identical; Described first voltage regulator control circuit 11 is connected to form by resistance R3 ~ R7, triode Q1, electric capacity C1, photo-coupler U1 and bidirectional triode thyristor U4; The input anode of described photo-coupler U1 is connected to described resistance R3 and is connected to+5V power supply by described resistance R3, input negative electrode is connected to the colelctor electrode of described triode Q1, output negative electrode is connected to described resistance R5 and is connected to live wire L1 by described resistance R5, and output anode is connected to described resistance R6 and is connected to described by controlled motor by described resistance R6; The base stage of described triode Q1 is connected to described resistance R4, grounded emitter; Described resistance R4 is connected to the triggering signal output that described dsp control signal produces circuit; The control pole of described bidirectional triode thyristor U4 is connected to the output anode of described photo-coupler U1 and the tie point of resistance R6, the anode of described bidirectional triode thyristor U4 is connected to the tie point of described live wire L1 and resistance R5, and the negative electrode of described bidirectional triode thyristor U4 is connected to described by the tie point of controlled motor and resistance R6; Described resistance R7 one end is connected to the tie point of described live wire L1 and resistance R5, and the other end is connected described electric capacity C1 and is connected to by described electric capacity C1 described by the tie point of controlled motor and resistance R6.
Described motor step-down energy-saving control device, wherein: described voltage zero-crossing detector is connected to form by controllable silicon U2 and U3, resistance R1 and R2, adjustable resistance RV1, operational amplifier A; The input anode of described controllable silicon U2 be connected with the input negative electrode of described controllable silicon U3 and together with contact resistance R1, described resistance R1 be connected to described by a certain phase main circuit of controlled motor 4; Ground connection together with the input negative electrode of described controllable silicon U2 is connected also with the input anode of described controllable silicon U3, the output anode of described controllable silicon U2 and the output anode of described controllable silicon U3 be connected and together be connected to+5V power supply, the output negative electrode of described controllable silicon U2 be connected with the output negative electrode of described controllable silicon U3 and together be connected to the inverting input of described operational amplifier A; The in-phase input end of described operational amplifier A is connected to the slide plate of described adjustable resistance RV1, and positive terminal is connected to+5V power supply, negative pole end ground connection, exports the voltage zero-cross detection signal input of dsp controller described in termination; Described adjustable resistance RV1 one end binding post is connected to the positive terminal of described operational amplifier A, other end binding post ground connection; Described resistance R2 one end connects the output anode of described controllable silicon U2, the positive terminal of operational amplifier A and+5V power supply respectively, and the other end of described resistance R2 is connected to the output negative electrode of described controllable silicon U3 and the tie point of described operational amplifier A inverting input.
Described motor step-down energy-saving control device, wherein: described current zero crossing detector is connected to form by current transformer TR1, operational amplifier A 2 and A3, controllable silicon U12 and U13, resistance R20 ~ R22, adjustable resistance RV3; Between the in-phase input end that described current transformer TR1 is connected to described operational amplifier A 2 and inverting input; Described operational amplifier A 2 in-phase input end ground connection, inverting input is connected described resistance R20 and R21 successively and is connected to the input anode of described controllable silicon U12 by described resistance R20 and R21, and the output of described operational amplifier A 2 is connected to the tie point of described resistance R20 and R21; The input anode of described controllable silicon U12 is connected with the input negative electrode of described controllable silicon U13, ground connection together with the input negative electrode of described controllable silicon U12 is connected also with the input anode of described controllable silicon U13, the output anode of described controllable silicon U12 be connected with the output anode of described controllable silicon U13 and together be connected to the power positive end of described operational amplifier A 3 and+5V power supply, the output negative electrode of described controllable silicon U12 be connected with the output negative electrode of described controllable silicon U13 and together be connected to the inverting input of described operational amplifier A 3; Described adjustable resistance RV3 one end binding post ground connection, other end binding post is connected to the power positive end of described operational amplifier A 3, and the slide plate of described adjustable resistance RV3 is connected to the in-phase input end of described operational amplifier A 3; The power cathode end ground connection of described operational amplifier A 3, output is connected to described dsp control signal and produces circuit; Described resistance R22 one end is connected to the tie point of the output anode of described controllable silicon U12 and the output anode of described controllable silicon U13, and the other end is connected to the inverting input of described operational amplifier A 3.
Described motor step-down energy-saving control device, wherein: described motor speed detector comprises sensor signal fluted disc, Hall element, sensor fixed support, sensor conductor and sensor signal output line composition; Described sensor signal fluted disc is arranged on described by the main shaft of controlled motor; Described sensor fixed support coupling is arranged at described sensor signal fluted disc side; Described Hall element is fixedly assemblied on described sensor fixed support by fastening nut, and its one end axial lead has sensor conductor, and described sensor signal output line connects the speed detection signal input that described dsp control signal produces circuit.
Described motor step-down energy-saving control device, wherein: described power amplification and photoisolator are connected with described dsp controller, is also connected with described pressure regulation governor circuit simultaneously; Described dsp controller inside is made up of control logic module, pilot signal processing module and output pulse generator module; Described control logic module is connected with the current zero-crossing signal input of the voltage zero-crossing signal input of described voltage zero-crossing detector, described current zero crossing detector, the motor speed signal input of described motor speed detector respectively; Described first, second, third voltage regulator control circuit accesses U, V, W tri-tunnel drive output signal lead-out terminal of described output pulse generator module respectively.
Described motor step-down energy-saving control device, wherein: described signal feedback utensil has three tunnels, described three tunnel signal feedback devices are connected with described first, second, third voltage regulator control circuit respectively, are also connected with described dsp controller simultaneously; Described signal feedback device is connected to form by bridge rectifier diode D1 ~ D4, resistance R8 ~ R9, controllable silicon U5, operational amplifier A 4 and adjustable resistance RV2; Described resistance R8 one end has three port S5, wherein port S5 described in a road is connected to the tie point of described bidirectional triode thyristor U4 and resistance R5, R7, port S5 described in another road connects the tie point of described photo-coupler U6 and resistance R12, R14, and described in a remaining road, port S5 connects the tie point of described controllable silicon U9 and resistance R17, R19; The described resistance R8 other end is connected to diode D1 anode tap and diode D2 cathode terminal tie point; The tie point of described diode D3 anode tap and diode D4 cathode terminal is connected with three road port S6, wherein port S6 described in a road is connected to the tie point of described bidirectional triode thyristor U4 and resistance R6, electric capacity C1, port S6 described in another road is connected to the tie point of described photo-coupler U6 and resistance R13, electric capacity C2, and described in a remaining road, port S6 connects the tie point of described controllable silicon U9 and resistance R18, C3; The input anode of described controllable silicon U5 is connected to the tie point of described diode D1 anode tap and diode D4 anode tap, the input negative electrode of described controllable silicon U5 is connected to the tie point of described diode D1 cathode terminal and diode D4 cathode terminal, the output anode of described controllable silicon U5 is connected to+5V power supply and is also connected with the power positive end of described operational amplifier A 4, and the output negative electrode of described controllable silicon U5 is connected to the inverting input of described operational amplifier A 4; Described resistance R9 one end is connected to the inverting input of described operational amplifier A 4, and the other end is connected to the output negative electrode of described controllable silicon U5, the power positive end of operational amplifier A 4 and+5V power supply; The output of described operational amplifier A 4 is connected to described dsp controller; Described adjustable resistance RV2 one end binding post is connected to the power positive end of described operational amplifier A 4, other end binding post ground connection, and the slide plate of described adjustable resistance RV2 is connected to the in-phase input end of operational amplifier A 4.
Beneficial effect:
The utility model motor step-down energy-saving control device reasonable in design, adopt high speed and real time control dsp controller, in conjunction with advanced fuzzy control strategy and control algolithm, multiple signals from motor collection are analyzed, can the change of accurate tracking motor load fast, fine adjustment is carried out to feeding electric motors voltage, thus reaches best power savings, and solve in voltage-reducing and electricity-saving process the problem easily causing vibration to cause motor operation unstable; Its electric motor electricity-saving device provided also is integrated with control of soft, and motor phase failure detects, the functions such as motor overload detection, has Control of Voltage and stablizes, and sensitive to load variations, antijamming capability is strong, and cost is low, the obvious advantage of energy-saving effect.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model motor step-down energy-saving control device;
Fig. 2 is the pressure regulation governor circuit figure of the utility model motor step-down energy-saving control device;
Fig. 3 is the circuit diagram of the voltage zero-crossing detector of the utility model motor step-down energy-saving control device;
Fig. 4 is the circuit diagram of the current zero crossing detector of the utility model motor step-down energy-saving control device;
Fig. 5 is the motor speed detector assembling schematic diagram of the utility model motor step-down energy-saving control device;
Fig. 6 is the structural representation of the dsp controller of the utility model motor step-down energy-saving control device;
Fig. 7 is the circuit diagram of the signal feedback device of the utility model motor step-down energy-saving control device.
Detailed description of the invention
As shown in Figure 1, the utility model motor step-down energy-saving control device, comprises pressure regulation governor circuit 1, testing circuit 2 and dsp control signal and produces circuit 3.
This pressure regulation governor circuit 1 is connected to three-phase main power source by circuit breaker Q, also produces circuit 3 with testing circuit 2, dsp control signal respectively and is electrically connected by controlled motor 4; This pressure regulation governor circuit 1 is made up of three road voltage regulator control circuits, and this three roads voltage regulator control circuit accesses respectively and connected+5V power supply by the three-phase circuit of controlled motor 4 and equal one end, and the other end is connected to by a wherein circuitry phase of controlled motor 4.
Wherein, this first voltage regulator control circuit 11 is connected to form by resistance R3 ~ R7, triode Q1, electric capacity C1, photo-coupler U1 and bidirectional triode thyristor U4; The input anode of this photo-coupler U1 is connected to resistance R3 and is connected to+5V power supply by resistance R3, the input negative electrode of this photo-coupler U1 is connected to the colelctor electrode of triode Q1, the output negative electrode of this photo-coupler U1 is connected to resistance R5 and is connected to live wire L1 by resistance R5, and the output anode of this photo-coupler U1 is connected to resistance R6 and is connected to by controlled motor 4 by resistance R6; The base stage of this triode Q1 is connected to resistance R4, grounded emitter; This resistance R4 connectivity port S1 also connects by port S1 the triggering signal output that dsp control signal produces circuit 3; The control pole of this bidirectional triode thyristor U4 is connected to the output anode of this photo-coupler U1 and the tie point of resistance R6, the anode of this bidirectional triode thyristor U4 is connected to the tie point of live wire L1 and resistance R5, and the negative electrode of this bidirectional triode thyristor U4 is connected to by the tie point of controlled motor 4 with resistance R6; Resistance R7 one end is connected to the tie point of live wire L1 and resistance R5, and the other end is connected electric capacity C1 and is connected to by the tie point of controlled motor 4 with resistance R6 by electric capacity C1.
This second road voltage regulator control circuit 12 is connected to form by resistance R10 ~ R14, triode Q2, electric capacity C2, photo-coupler U6 and bidirectional triode thyristor U7; The input anode of this photo-coupler U6 is connected to resistance R10 and is connected to+5V power supply by resistance R10, the input negative electrode of this photo-coupler U6 is connected to the colelctor electrode of triode Q2, the output negative electrode of this photo-coupler U6 is connected to resistance R12 and is connected to live wire L2 by resistance R12, and the output anode of this photo-coupler U6 is connected to resistance R13 and is connected to by controlled motor 4 by resistance R13; The base stage of this triode Q2 is connected to resistance R11, grounded emitter; Resistance R11 connectivity port S2 also connects by port S2 the triggering signal output that dsp control signal produces circuit 3; The control pole of this bidirectional triode thyristor U7 is connected to the output anode of this photo-coupler U6 and the tie point of resistance R13, the anode of this bidirectional triode thyristor U7 is connected to the tie point of live wire L2 and resistance R12, and the negative electrode of this bidirectional triode thyristor U7 is connected to by the tie point of controlled motor 4 with resistance R13; Resistance R14 one end is connected to the tie point of live wire L2 and resistance R12, and the other end is connected electric capacity C2 and is connected to by the tie point of controlled motor 4 with resistance R13 by electric capacity C2.
3rd road voltage regulator control circuit 13 is connected to form by resistance R15 ~ R19, triode Q3, electric capacity C3, photo-coupler U8 and bidirectional triode thyristor U9; The input anode of this photo-coupler U8 is connected to resistance R15 and is connected to+5V power supply by resistance R15, the input negative electrode of this photo-coupler U8 is connected to the colelctor electrode of triode Q3, the output negative electrode of this photo-coupler U8 is connected to resistance R17 and is connected to live wire L3 by resistance R17, and the output anode of this photo-coupler U8 is connected to resistance R18 and is connected to by controlled motor 4 by resistance R18; The base stage of this triode Q3 is connected to resistance R16, grounded emitter; This resistance R16 connectivity port S3 also connects by port S3 the triggering signal output that dsp control signal produces circuit 3; The control pole of this bidirectional triode thyristor U9 is connected to the output anode of this photo-coupler U8 and the tie point of resistance R18, the anode of this bidirectional triode thyristor U9 is connected to the tie point of live wire L3 and resistance R17, and the negative electrode of this bidirectional triode thyristor U9 is connected to by the tie point of controlled motor 4 with resistance R18; Resistance R19 one end is connected to the tie point of live wire L3 and resistance R17, and the other end is connected electric capacity C3 and is connected to by the tie point of controlled motor 4 with resistance R18 by electric capacity C3.
Wherein, photo-coupler U1, U6, U8 form photoelectric isolating circuit, for the isolation of forceful electric power between main circuit and control circuit and light current; Road triggering signal meets triode Q1, Q2, Q3 respectively from the triggering signal output of dsp control signal generation circuit 3 and carries out power amplification, for driving U1, U6, U8 tri-photo-couplers, controlled the ON time of bidirectional triode thyristor U4, U7, U8 respectively by photo-coupler U1, U6, U8.
This testing circuit 2 comprises voltage zero-crossing detector 21, current zero crossing detector 22 and motor speed detector 23; This voltage zero-crossing detector 21 and current zero crossing detector 22 are attempted by by controlled motor 4(three phase electric machine) a certain phase main circuit on and access dsp control signal produce circuit 3; This motor speed detector 23 is arranged on and the main shaft of controlled motor 4 is produced circuit 3 with dsp control signal and is electrically connected.
Wherein, this voltage zero-crossing detector 21 is connected to form by controllable silicon U2 and U3, resistance R1 and R2, adjustable resistance RV1, operational amplifier A; The input anode of this controllable silicon U2 be connected with the input negative electrode of controllable silicon U3 and together with contact resistance R1, this resistance R1 is connected with port S4 and is connected to by a certain phase main circuit of controlled motor 4 by port S4, ground connection together with the input negative electrode of this controllable silicon U2 is connected also with the input anode of controllable silicon U3; The output anode of this controllable silicon U2 and the output anode of controllable silicon U3 be connected and together be connected to+5V power supply, the output negative electrode of this controllable silicon U2 be connected with the output negative electrode of controllable silicon U3 and together be connected to the inverting input of operational amplifier A; The in-phase input end of this operational amplifier A is connected to the slide plate of adjustable resistance RV1, the positive terminal of this operational amplifier A is connected to+5V power supply, the negative pole end ground connection of this operational amplifier A, the output termination dsp control signal of this operational amplifier A produces the voltage zero-cross detection signal input of circuit 3; This adjustable resistance RV1 one end binding post is connected to the positive terminal of operational amplifier A, other end binding post ground connection; This resistance R2 one end connects the output anode of controllable silicon U2, the positive terminal of operational amplifier A and+5V power supply respectively, and the other end of this resistance R2 is connected to the output negative electrode of this controllable silicon U3 and the tie point of operational amplifier A inverting input.This voltage zero-crossing detector 21 is for detecting the zero crossing of alternating voltage, its at zero-acrross ing moment by the output of operational amplifier A and voltage zero-crossing signal input output pulse signal to dsp control signal generation circuit 3, as the time reference of Regulation Control signal.
This current zero crossing detector 22 is connected to form by current transformer TR1, operational amplifier A 2 and A3, controllable silicon U12 and U13, resistance R20 ~ R22, adjustable resistance RV3; Between the in-phase input end that this current transformer TR1 is connected to this operational amplifier A 2 and inverting input; This operational amplifier A 2 in-phase input end ground connection, inverting input contact resistance R20 and R21 be connected to the input anode of controllable silicon U12 by resistance R20, R21 successively, the output of this operational amplifier A 2 is connected to the tie point of resistance R20 and R21; The input anode of this controllable silicon U12 is connected with the input negative electrode of controllable silicon U13, ground connection together with the input negative electrode of this controllable silicon U12 is connected also with the input anode of controllable silicon U13, the output anode of this controllable silicon U12 be connected with the output anode of controllable silicon U13 and together be connected to the power positive end of operational amplifier A 3 and+5V power supply, the output negative electrode of this controllable silicon U12 be connected with the output negative electrode of controllable silicon U13 and together be connected to the inverting input of operational amplifier A 3; This adjustable resistance RV3 one end binding post ground connection, other end binding post is connected to the power positive end of operational amplifier A 3, and the slide plate of this adjustable resistance RV3 is connected to the in-phase input end of operational amplifier A 3; The power cathode end ground connection of this operational amplifier A 3, the output of this operational amplifier A 3 and current zero-crossing signal input are connected to dsp control signal and produce circuit 3.This resistance R22 one end is connected to the tie point of the output anode of this controllable silicon U12 and the output anode of controllable silicon U13, and the other end is connected to the inverting input of operational amplifier A 3.The electric current that this current transformer TR1 detects and voltage zero-crossing detector 21 are same phase, the current signal exported by current transformer TR1 converts voltage to through A2, then zero crossing is detected by voltage zero-crossing detector 21 below, be input to dsp control signal in the current over-zero moment by the output of operational amplifier A 3 and current zero-crossing signal input and produce circuit 3, for comparing with other signal, formation control signal be used for can controllable silicon ON time adjustment control.
This motor speed detector 23 provides the rotary speed information of motor for dsp control signal produces circuit 3, and it is the sensor signal fluted disc 231 be arranged on electric machine main shaft, Hall element 232, fastening nut 233, sensor fixed support 244, sensor conductor 245 and sensor signal output line 246 form; This Hall element 232 is fixedly assemblied on this sensor fixed support 244 by fastening nut 233, its one end axial lead has sensor conductor 245, and this sensor signal output line 246 i.e. motor speed signal input connects the speed detection signal input that dsp control signal produces circuit 3.
This dsp control signal produces circuit 3 and comprises dsp controller 31, power amplification and photoisolator 32 and signal feedback device 33.
This dsp controller 31 is electrically connected with voltage zero-crossing detector 21, voltage zero-crossing detector 22, motor speed detector 23, power amplification and photoisolator 32 and signal feedback device 33 respectively.This dsp controller 31 inside is made up of control logic module 311, pilot signal processing module 312 and output pulse generator module 313, this control logic module 311 is the voltage zero-crossing signals to input, current zero-crossing signal, the signal that motor speed signal and pilot signal processing module 312 are sent here processes, obtain the triggering signal of control required for controlled silicon conducting relative to the phase shift time signal needed for voltage zero-crossing signal, this phase shift time signal is admitted to output pulse generator module 313, produce U, V, the pulse of W three-phase drive outputs to the Q1 of pressure regulation governor circuit 1, Q2, Q3 tri-triode Q3 carry out power amplification, then by the photo-coupler U1 of governor circuit 1, U6, U8 controls the controllable silicon U4 of governor circuit 1, U7, U9 time conducting on request.This pilot signal processing module 312 is used for monitoring each input signal, when finding that input signal occurs abnormal, different pilot signals will be transmitted to control logic module 311 according to different situations, by control logic module 311, pilot signal and voltage, electric current and motor speed signal are carried out integrated treatment, show that phase shifted time signal delivers to the generation that output pulse generator module 313 carries out control impuls; Work as circuit malfunctions, during the signal severely subnormal of input, pilot signal processing module 312 will directly close output pulse generator module 313, simultaneously output alarm signal.
Wherein, this motor speed detector 23 is electrically connected with the control logic module 311 of dsp controller 31 by motor speed signal input; This pressure regulation governor circuit 1 connects U, V, W tri-tunnel drive output signal lead-out terminal of the output pulse generator module 313 of dsp controller 31 respectively by port S1, S2, S3.Meanwhile, the voltage zero-crossing signal input of control logic module 311 and the voltage zero-crossing detector 21 of this dsp controller 31, the current zero-crossing signal input of current zero crossing detector 22, the motor speed signal input of motor speed detector 23 are connected.
This power amplification and photoisolator 32 are connected with dsp controller 31, are also connected with pressure regulation governor circuit 1 simultaneously.
This signal feedback device 33 is connected with pressure regulation governor circuit 1, is also connected with dsp controller 31 simultaneously; Wherein, this signal feedback device 33 is connected to form by bridge rectifier diode D1 ~ D4, resistance R8 ~ R9, controllable silicon U5, operational amplifier A 4 and adjustable resistance RV2.This signal feedback device 33 has three tunnels, namely resistance R8 one end is connected with three road port S5, wherein a road port S5 connects the tie point of live wire L1 and bidirectional triode thyristor U4 and resistance R5, R7, another road port S5 connects the tie point of live wire L2 and photo-coupler U6 and resistance R12, R14, and a remaining road port S5 connects the tie point of live wire L3 and controllable silicon U9 and resistance R17, R19; This resistance R8 other end is connected to diode D1 anode tap and diode D2 cathode terminal tie point; The tie point of this diode D3 anode tap and diode D4 cathode terminal is connected with three road port S6, wherein a road port S6 connects by the tie point of the phase line U of controlled motor 4 and bidirectional triode thyristor U4 and resistance R6, electric capacity C1, another road port S6 connects by the tie point of the phase line V of controlled motor 4 and photo-coupler U6 and resistance R13, electric capacity C2, and a remaining road port S6 connects by the tie point of the phase line W of controlled motor 4 and controllable silicon U9 and resistance R18, electric capacity C3.The input anode of this controllable silicon U5 is connected to the tie point of diode D1 anode tap and diode D4 anode tap, the input negative electrode of this controllable silicon U5 is connected to the tie point of diode D1 cathode terminal and diode D4 cathode terminal, the output anode of this controllable silicon U5 is connected to+5V power supply and is also connected with the power positive end of operational amplifier A 4, and the output negative electrode of this controllable silicon U5 is connected to the inverting input of this operational amplifier A 4; This resistance R9 one end is connected to the inverting input of operational amplifier A 4, and the other end is connected to the output negative electrode of controllable silicon U5, the power positive end of operational amplifier A 4 and+5V power supply, and the output of this operational amplifier A 4 is connected to dsp controller 31; This adjustable resistance RV2 one end binding post is connected to the power positive end of operational amplifier A 4, other end binding post ground connection, and the slide plate of this adjustable resistance RV2 is connected to the in-phase input end of operational amplifier A 4.
The utility model motor step-down energy-saving control device reasonable in design, has Control of Voltage and stablizes, sensitive to load variations, antijamming capability is strong, cost is low, the obvious advantage of energy-saving effect, effectively can solve in voltage-reducing and electricity-saving process and easily cause vibration to cause motor to run unstable problem.
Claims (7)
1. a motor step-down energy-saving control device, is characterized in that: described control device comprises pressure regulation governor circuit, testing circuit and dsp control signal and produces circuit;
Described pressure regulation governor circuit is connected to three-phase main power source by circuit breaker Q, also produces circuit with described testing circuit, dsp control signal respectively and controlled electric electromechanics is connected; Described pressure regulation governor circuit access is described by the three-phase circuit of controlled motor;
Described testing circuit comprises voltage zero-crossing detector, current zero crossing detector and motor speed detector; Described voltage zero-crossing detector and current zero crossing detector be attempted by described by a certain phase main circuit of controlled motor and one end access described dsp control signal produce circuit; Described motor speed detector is arranged on and described the main shaft of controlled motor is also produced circuit with described dsp control signal and is electrically connected;
Described dsp control signal produces circuit and comprises dsp controller, power amplification and photoisolator and signal feedback device; Described dsp controller is electrically connected with described voltage zero-crossing detector, voltage zero-crossing detector, motor speed detector respectively; Described signal feedback device is connected described dsp controller with described power amplification and the equal one end of photoisolator, and the other end connects described pressure regulation governor circuit.
2. motor step-down energy-saving control device as claimed in claim 1, is characterized in that: described pressure regulation governor circuit is made up of three road voltage regulator control circuits, namely comprises first, second, third voltage regulator control circuit;
Described first, second, third voltage regulator control circuit accesses respectively and is describedly connected+5V power supply by the three-phase circuit of controlled motor and equal one end, and the other end is connected to described by a wherein circuitry phase of controlled motor; Described first, second, third voltage regulator control circuit structure composition is identical;
Described first voltage regulator control circuit 11 is connected to form by resistance R3 ~ R7, triode Q1, electric capacity C1, photo-coupler U1 and bidirectional triode thyristor U4; The input anode of described photo-coupler U1 is connected to described resistance R3 and is connected to+5V power supply by described resistance R3, input negative electrode is connected to the colelctor electrode of described triode Q1, output negative electrode is connected to described resistance R5 and is connected to live wire L1 by described resistance R5, and output anode is connected to described resistance R6 and is connected to described by controlled motor by described resistance R6; The base stage of described triode Q1 is connected to described resistance R4, grounded emitter; Described resistance R4 is connected to the triggering signal output that described dsp control signal produces circuit; The control pole of described bidirectional triode thyristor U4 is connected to the output anode of described photo-coupler U1 and the tie point of resistance R6, the anode of described bidirectional triode thyristor U4 is connected to the tie point of described live wire L1 and resistance R5, and the negative electrode of described bidirectional triode thyristor U4 is connected to described by the tie point of controlled motor and resistance R6; Described resistance R7 one end is connected to the tie point of described live wire L1 and resistance R5, and the other end is connected described electric capacity C1 and is connected to by described electric capacity C1 described by the tie point of controlled motor and resistance R6.
3. motor step-down energy-saving control device as claimed in claim 1, is characterized in that: described voltage zero-crossing detector is connected to form by controllable silicon U2 and U3, resistance R1 and R2, adjustable resistance RV1, operational amplifier A; The input anode of described controllable silicon U2 be connected with the input negative electrode of described controllable silicon U3 and together with contact resistance R1, described resistance R1 be connected to described by a certain phase main circuit of controlled motor 4; Ground connection together with the input negative electrode of described controllable silicon U2 is connected also with the input anode of described controllable silicon U3, the output anode of described controllable silicon U2 and the output anode of described controllable silicon U3 be connected and together be connected to+5V power supply, the output negative electrode of described controllable silicon U2 be connected with the output negative electrode of described controllable silicon U3 and together be connected to the inverting input of described operational amplifier A; The in-phase input end of described operational amplifier A is connected to the slide plate of described adjustable resistance RV1, and positive terminal is connected to+5V power supply, negative pole end ground connection, exports the voltage zero-cross detection signal input of dsp controller described in termination; Described adjustable resistance RV1 one end binding post is connected to the positive terminal of described operational amplifier A, other end binding post ground connection; Described resistance R2 one end connects the output anode of described controllable silicon U2, the positive terminal of operational amplifier A and+5V power supply respectively, and the other end of described resistance R2 is connected to the output negative electrode of described controllable silicon U3 and the tie point of described operational amplifier A inverting input.
4. motor step-down energy-saving control device as claimed in claim 1, is characterized in that: described current zero crossing detector is connected to form by current transformer TR1, operational amplifier A 2 and A3, controllable silicon U12 and U13, resistance R20 ~ R22, adjustable resistance RV3; Between the in-phase input end that described current transformer TR1 is connected to described operational amplifier A 2 and inverting input; Described operational amplifier A 2 in-phase input end ground connection, inverting input is connected described resistance R20 and R21 successively and is connected to the input anode of described controllable silicon U12 by described resistance R20 and R21, and the output of described operational amplifier A 2 is connected to the tie point of described resistance R20 and R21; The input anode of described controllable silicon U12 is connected with the input negative electrode of described controllable silicon U13, ground connection together with the input negative electrode of described controllable silicon U12 is connected also with the input anode of described controllable silicon U13, the output anode of described controllable silicon U12 be connected with the output anode of described controllable silicon U13 and together be connected to the power positive end of described operational amplifier A 3 and+5V power supply, the output negative electrode of described controllable silicon U12 be connected with the output negative electrode of described controllable silicon U13 and together be connected to the inverting input of described operational amplifier A 3; Described adjustable resistance RV3 one end binding post ground connection, other end binding post is connected to the power positive end of described operational amplifier A 3, and the slide plate of described adjustable resistance RV3 is connected to the in-phase input end of described operational amplifier A 3; The power cathode end ground connection of described operational amplifier A 3, output is connected to described dsp control signal and produces circuit; Described resistance R22 one end is connected to the tie point of the output anode of described controllable silicon U12 and the output anode of described controllable silicon U13, and the other end is connected to the inverting input of described operational amplifier A 3.
5. motor step-down energy-saving control device as claimed in claim 1, is characterized in that: described motor speed detector comprises sensor signal fluted disc, Hall element, sensor fixed support, sensor conductor and sensor signal output line composition;
Described sensor signal fluted disc is arranged on described by the main shaft of controlled motor; Described sensor fixed support coupling is arranged at described sensor signal fluted disc side; Described Hall element is fixedly assemblied on described sensor fixed support by fastening nut, and its one end axial lead has sensor conductor, and described sensor signal output line connects the speed detection signal input that described dsp control signal produces circuit.
6. motor step-down energy-saving control device as claimed in claim 2, is characterized in that: described power amplification and photoisolator are connected with described dsp controller, is also connected with described pressure regulation governor circuit simultaneously;
Described dsp controller inside is made up of control logic module, pilot signal processing module and output pulse generator module; Described control logic module is connected with the current zero-crossing signal input of the voltage zero-crossing signal input of described voltage zero-crossing detector, described current zero crossing detector, the motor speed signal input of described motor speed detector respectively; Described first, second, third voltage regulator control circuit accesses U, V, W tri-tunnel drive output signal lead-out terminal of described output pulse generator module respectively.
7. motor step-down energy-saving control device as claimed in claim 1, it is characterized in that: described signal feedback utensil has three tunnels, described three tunnel signal feedback devices are connected with described first, second, third voltage regulator control circuit respectively, are also connected with described dsp controller simultaneously; Described signal feedback device is connected to form by bridge rectifier diode D1 ~ D4, resistance R8 ~ R9, controllable silicon U5, operational amplifier A 4 and adjustable resistance RV2;
Described resistance R8 one end has three port S5, wherein port S5 described in a road is connected to the tie point of described bidirectional triode thyristor U4 and resistance R5, R7, port S5 described in another road connects the tie point of described photo-coupler U6 and resistance R12, R14, and described in a remaining road, port S5 connects the tie point of described controllable silicon U9 and resistance R17, R19; The described resistance R8 other end is connected to diode D1 anode tap and diode D2 cathode terminal tie point;
The tie point of described diode D3 anode tap and diode D4 cathode terminal is connected with three road port S6, wherein port S6 described in a road is connected to the tie point of described bidirectional triode thyristor U4 and resistance R6, electric capacity C1, port S6 described in another road is connected to the tie point of described photo-coupler U6 and resistance R13, electric capacity C2, and described in a remaining road, port S6 connects the tie point of described controllable silicon U9 and resistance R18, electric capacity C3;
The input anode of described controllable silicon U5 is connected to the tie point of described diode D1 anode tap and diode D4 anode tap, the input negative electrode of described controllable silicon U5 is connected to the tie point of described diode D1 cathode terminal and diode D4 cathode terminal, the output anode of described controllable silicon U5 is connected to+5V power supply and is also connected with the power positive end of described operational amplifier A 4, and the output negative electrode of described controllable silicon U5 is connected to the inverting input of described operational amplifier A 4; Described resistance R9 one end is connected to the inverting input of described operational amplifier A 4, and the other end is connected to the output negative electrode of described controllable silicon U5, the power positive end of operational amplifier A 4 and+5V power supply; The output of described operational amplifier A 4 is connected to described dsp controller; Described adjustable resistance RV2 one end binding post is connected to the power positive end of described operational amplifier A 4, other end binding post ground connection, and the slide plate of described adjustable resistance RV2 is connected to the in-phase input end of operational amplifier A 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520011571.5U CN204304866U (en) | 2015-01-08 | 2015-01-08 | A kind of motor step-down energy-saving control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520011571.5U CN204304866U (en) | 2015-01-08 | 2015-01-08 | A kind of motor step-down energy-saving control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204304866U true CN204304866U (en) | 2015-04-29 |
Family
ID=53110371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520011571.5U Expired - Fee Related CN204304866U (en) | 2015-01-08 | 2015-01-08 | A kind of motor step-down energy-saving control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204304866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035960A (en) * | 2015-06-09 | 2015-11-11 | 杭州国电大力机电工程有限公司 | Cable crane hoisting mechanism control circuit system with inversion protection function |
| CN105083513A (en) * | 2015-08-24 | 2015-11-25 | 上海瑞华(集团)有限公司 | Onboard water-cooled power driver control device |
-
2015
- 2015-01-08 CN CN201520011571.5U patent/CN204304866U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105035960A (en) * | 2015-06-09 | 2015-11-11 | 杭州国电大力机电工程有限公司 | Cable crane hoisting mechanism control circuit system with inversion protection function |
| CN105035960B (en) * | 2015-06-09 | 2017-03-29 | 杭州国电大力机电工程有限公司 | Cable crane lifting mechanism control circuit system with inversion protection function |
| CN105083513A (en) * | 2015-08-24 | 2015-11-25 | 上海瑞华(集团)有限公司 | Onboard water-cooled power driver control device |
| CN105083513B (en) * | 2015-08-24 | 2018-01-23 | 上海瑞华(集团)有限公司 | A kind of boat-carrying water-cooled power drill/driver control device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103326662A (en) | Energy-saving controller for three-phase alternating-current asynchronous motor and control method of energy-saving controller | |
| CN204304866U (en) | A kind of motor step-down energy-saving control device | |
| CN104333292A (en) | Load tracking type electricity saving device | |
| CN103618483A (en) | Sectional-type energy consumption brake circuit of permanent-magnet direct current motor | |
| CN103066914B (en) | Direct power control system of high power factor induction motor | |
| CN201118513Y (en) | Efficiency optimization control system for three-phase inductance electromotor | |
| CN203340016U (en) | Energy-saving controller for three-phase alternating-current asynchronous motor | |
| CN208836038U (en) | A kind of motor rotation-speed control circuit, motor speed controller and direct current generator | |
| CN104393801B (en) | A kind of brshless DC motor arrangements for speed regulation and speed regulating method | |
| CN205283451U (en) | Variable frequency speed device is trailed in single phase power threephase asynchronous machine load | |
| CN202513872U (en) | Device for adapting motor to automatically run at optimum efficiency in on-line type | |
| CN205245462U (en) | Variable frequency air conditioner compressor controlling means | |
| CN103001571B (en) | Synchronous regulation electricity-saving device is followed the tracks of in motor load | |
| CN202998004U (en) | Intelligent power-saving controller of three-phase asynchronous motor | |
| CN204810186U (en) | Sinusoidal wave brushless DC motor driver | |
| CN204156541U (en) | A kind of microcomputer controlled photovoltaic synchronization inverter system | |
| CN107017806A (en) | A kind of multiprocessor permanent-magnet brushless DC electric machine combines governing system | |
| CN203911835U (en) | Stringing type motor vehicle-used frequency converter | |
| CN207835065U (en) | A kind of domestic power supply voltage fluctuation compensation device based on DSP | |
| CN204436846U (en) | Blower fan system and air conditioner | |
| CN208063071U (en) | Axial magnetic field memory electrical machine control device | |
| CN206195667U (en) | Single -phase asynchronous fan stepless speed regulation control system of alternating current input | |
| CN205029571U (en) | Super wide input voltage's isolation power | |
| CN204334411U (en) | A kind of electrical machine energy-saving control system | |
| CN202309608U (en) | Motor load tracking and synchronous regulation electricity-saving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20160108 |