CN204794381U - High pressure separation power supply unit based on magnetic field keeps apart - Google Patents
High pressure separation power supply unit based on magnetic field keeps apart Download PDFInfo
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- CN204794381U CN204794381U CN201520505816.XU CN201520505816U CN204794381U CN 204794381 U CN204794381 U CN 204794381U CN 201520505816 U CN201520505816 U CN 201520505816U CN 204794381 U CN204794381 U CN 204794381U
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Abstract
The utility model discloses a high pressure separation power supply unit based on magnetic field keeps apart, this power supply unit include the wireless transmitting terminal converter that charges, the wireless transmitting coil of charging, the wireless receiving coil of charging and the wireless receiving terminal converter that charges. Wireless charge transmitting coil with the wireless transmitting terminal converter that charges links to each other. The wireless receiving coil that charges, be used for with the wireless transmitting coil coupling of charging. The wireless receiving terminal converter that charges, with the wireless receiving coil that charges links to each other. Wherein, the low -voltage distribution district is arranged in to the wireless transmitting terminal converter that charges, the high voltage supply district is arranged in to the wireless receiving terminal converter that charges, wireless charge the transmitting terminal converter with wireless charging has high -low pressure storehouse baffle to keep apart between the receiving terminal converter. The device can increase sensor power supply's life -span greatly, realizes the non -maintaining of high -tension apparatus power supply mode.
Description
Technical field
The utility model relates to high and low voltage electric distribution control field, particularly relates to a kind of high pressure based on magnetic field isolation and intercepts electric supply installation.
Background technology
Along with the continuous increase of net capacity, high-tension apparatus is applied more and more in electrical network, such as high-tension switch cabinet, dry-type transformer, box-type substation etc.The reliability of high-tension apparatus is the important leverage of electrical network reliability service.Equipment running monitoring backstage can be monitored and be gathered necessary information, by telecommunication, in time the running status of equipment is fed back to equipment manager, equipment manager is according to the feedback information on monitoring backstage, maintenance can be arranged in time, avoid serious accident, reduce grid power blackout risk.
Monitoring backstage can watch-dog working voltage, electric current, power, the information such as temperature, in general, it is thing easily that transducer gathers corresponding information, but under hyperbaric environment, due to the restriction of insulation safety, the acquisition of sensor power is a difficult thing.
As shown in Figure 1, a kind of functional schematic of high-tension apparatus, high-low pressure bin is strict differentiation, and the operation bin of attendant is also separate separately.The electricity of low-pressure chamber directly can not supply the parts use in hyperbaric chamber, if the control electricity in hyperbaric chamber is directly got from low-pressure chamber, under single failure condition, likely can make low-pressure chamber failure of insulation, cause device damage or even personal injury.Therefore, the power supply in hyperbaric chamber must have been come by independently power supply.
For the power supply in hyperbaric chamber, existing solution mainly includes powered battery and Current Mutual Inductance (CT) power supply.
One, powered battery scheme
High-tension apparatus is due to the consideration of its very strong insulation safety, and strictly can distinguish hyperbaric chamber and low-pressure chamber, the bin of operator's operation also can divide separately, and it is the bin of an electrical safety.The voltage of high-tension apparatus, the transducer such as electric current and temperature is all be placed on hyperbaric chamber, directly measures related physical quantity.For the purpose of safety, the sensor power of high-pressure chamber can not directly be got from low-pressure chamber, the insulation clearance clearly to keep strict; For this reason, need to arrange independently power supply in hyperbaric chamber, as shown in Figure 2, and battery is the source of wherein a kind of energy, and battery is boosted or reduction voltage circuit by corresponding, or directly to each sensor power.
But there is following shortcoming in powered battery:
1., because high-tension apparatus environment for use is Non-Air-Conditioned Buildings, interior environment temperature can produce very large floating with load own and applied environment (as height above sea level, dimension, season etc.), easily causes battery premature failure, causes sensor circuit to lose efficacy;
2., due to the finite capacity of battery, in order to extending battery life of trying one's best, take the measure of a lot of low-power consumption, greatly reduce the real-time of sampling, be unfavorable for Timeliness coverage fault;
3. the life-span of battery is relatively uncertain, can increase tour workload, adds high-tension apparatus management cost, does not conform to the development trend of " non-maintaining ".
Two, Current Mutual Inductance (CT) power supply
Current Mutual Inductance is powered, and it is as follows that it realizes principle:
According to Faraday's electromagnetic induction law, the alternating current that copper bar flows through can produce the magnetic field of alternation, high-voltage busbar overlaps one and gets energy coil, as shown in Figure 3, convert the magnetic field of alternation to alternating voltage, then pass through rectification circuit, become direct current, to sensor power.
Current Mutual Inductance is powered and is also had the following disadvantages:
1. for jumbo equipment, the electric current of busbar may change to a few kiloampere from 0A, and CT cannot provide enough energy to go to maintain the consumption of transducer within the scope of total current;
2., within the scope of total current, it is very large that CT gets the voltage differences that can coil sense, rectification circuit design is very difficult;
3. this scheme is not suitable for high voltage direct current transmission, because direct current can not produce alternating magnetic field.
Utility model content
In view of the shortcoming that above-mentioned powered battery and CT power supply station exist, the purpose of this utility model is to provide a kind of high pressure based on magnetic field isolation to intercept electric supply installation.
The utility model discloses a kind of high pressure based on magnetic field isolation and intercept electric supply installation, this electric supply installation comprises wireless charging transmitting terminal converter, wireless charging transmitting coil, wireless charging receiving coil and wireless charging receiving terminal converter.Wireless charging transmitting coil is connected with described wireless charging transmitting terminal converter.Wireless charging receiving coil, for being coupled with described wireless charging transmitting coil.Wireless charging receiving terminal converter, is connected with described wireless charging receiving coil.Wherein, described wireless charging transmitting terminal converter is placed in low-voltage distribution district, described wireless charging receiving terminal converter is placed in high voltage supply district, has high-low pressure storehouse dividing plate to isolate between described wireless charging transmitting terminal converter and described wireless charging receiving terminal converter.
Preferably, short pulse launched by described wireless charging transmitting terminal converter, and detect described wireless charging receiving terminal by described short pulse and whether be placed on charged area, if described wireless charging receiving terminal detected, then described wireless charging transmitting terminal converter enters charge mode.
Preferably, described wireless charging transmitting terminal converter comprises metal-oxide-semiconductor Q21, metal-oxide-semiconductor Q22 that four employing bridge circuits connect, metal-oxide-semiconductor Q23 and metal-oxide-semiconductor Q24, resonant capacitance C21 and bus capacitor C22; Be electrically connected with bus capacitor C22 one end after metal-oxide-semiconductor Q22 is connected with the drain pin of metal-oxide-semiconductor Q24, and the drain pin of metal-oxide-semiconductor Q22 and metal-oxide-semiconductor Q24 is by resistance R ground connection; Be electrically connected with the other end of bus capacitor C22 after metal-oxide-semiconductor Q21 is connected with the source electrode pin of metal-oxide-semiconductor Q23; Metal-oxide-semiconductor Q21 is connected with the bridge circuit tie point of metal-oxide-semiconductor Q24 with metal-oxide-semiconductor Q22 by resonant capacitance C21 and described wireless charging transmitting terminal coil with the bridge circuit tie point of metal-oxide-semiconductor Q22.
Preferably, described wireless charging receiving terminal converter comprises rectification unit, modulating unit and DC/DC conversion unit; Described rectification unit is used for alternating voltage to be converted to direct voltage; Described modulating unit is used for exporting modulation signal according to described alternating voltage; Described DC/DC conversion unit is used for described direct voltage to carry out voltage transitions.
Preferably, described rectification unit comprises metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q12, metal-oxide-semiconductor Q13 and metal-oxide-semiconductor Q14, the storage capacitor C13 of four employing bridge circuits connections; Metal-oxide-semiconductor Q11 connects one end of DC to DC converter after being connected with the source electrode pin of metal-oxide-semiconductor Q13; Metal-oxide-semiconductor Q12 connects the other end of DC to DC converter after being connected with the drain pin of metal-oxide-semiconductor Q14; Storage capacitor C13 is connected in the two ends of DC to DC converter in parallel.
Preferably, described modulating unit comprise throwing unload electric capacity C11, throw unload electric capacity C12, switching tube Q15, switching tube Q16, resonant capacitance C15 and Detection capacitance C14; Metal-oxide-semiconductor Q11 is connected with the bridge-type electric connection point of metal-oxide-semiconductor Q14 with metal-oxide-semiconductor Q13 by resonant capacitance C15 and described wireless charging receiving terminal coil with the bridge circuit tie point of metal-oxide-semiconductor Q12; Detection capacitance C14 is connected in resonant capacitance C15 and wireless charging receiving terminal coil two ends in parallel; Switching tube Q15 and Q16 is metal-oxide-semiconductor; Ground connection after the source electrode electrical connection of metal-oxide-semiconductor Q15 and Q16; The grid electrical connection of metal-oxide-semiconductor Q15 and Q16; The drain electrode of metal-oxide-semiconductor Q15 with Q16 is unloaded electric capacity C11 respectively by throwing and is thrown and unloads electric capacity C12 and formed with the two ends of Detection capacitance C14 and be connected.
Preferably, described metal-oxide-semiconductor is N-type channel MOS tube.
Preferably, the source electrode pin of described metal-oxide-semiconductor is all connected with drain pin by a diode.
Preferably, the alternating voltage envelope on described wireless charging receiving coil modulates communication signal, and described communication signal is by the coupling in magnetic field, passes on described wireless charging transmitting coil, forms the modulation signal of communication.
Preferably, described wireless charging transmitting terminal converter also for doing difference by input voltage is given with present input voltage, obtaining an electric voltage feed forward error amount, and by this error amount after pid algorithm, obtaining input voltage feed forward.
High pressure based on magnetic field isolation intercepts the life-span that electric supply installation can increase sensor power power supply greatly, realizes the non-maintaining of high-tension apparatus supply power mode.
Accompanying drawing explanation
Fig. 1 is the function division schematic diagram of high-tension apparatus;
Fig. 2 is existing powered battery scheme schematic diagram;
Fig. 3 is existing Current Mutual Inductance power supply plan schematic diagram;
Fig. 4 is magnetic field of the present utility model isolation power supply plan schematic diagram;
Fig. 5 is wireless charging transmitting terminal circuit theory diagrams in the utility model embodiment;
Fig. 6 is wireless charging receiving terminal circuit schematic diagram in the utility model embodiment;
Fig. 7 is magnetic field of the present utility model isolation power supply plan flow chart;
Fig. 8 is the detailed control program flow chart of magnetic field of the present utility model isolation power supply plan;
Fig. 9 be in the utility model one embodiment wireless charging transmitting terminal power on after scheme realization flow schematic diagram;
Figure 10 be in the utility model one embodiment wireless charging receiving terminal power on after scheme realization flow schematic diagram;
Figure 11 is the communication signal waveform schematic diagram adopting load-modulate in the utility model one embodiment;
The pulse signal of Figure 12 transmitting terminal converter when receiving terminal not detected on L2.
Embodiment
As shown in Figure 4, a kind of high pressure based on magnetic field isolation that the utility model provides intercepts electric supply installation, the wireless charging receiving terminal coil comprising wireless charging transmitting terminal converter, wireless charging receiving terminal converter, the wireless charging transmitting terminal coil be electrically connected with described wireless charging transmitting terminal converter and be electrically connected with described wireless charging receiving terminal converter; Described wireless charging transmitting terminal converter is placed in low-voltage distribution district, and described wireless charging receiving terminal converter is placed in high voltage supply district, has high-low pressure storehouse dividing plate to isolate between wireless charging transmitting terminal converter and wireless charging receiving terminal converter.In figure, the thick line of black is the dividing plate of high-low pressure bin, object be illustrate this technical scheme be can penetrate high-low pressure storehouse dividing plate and the insulation system of high-tension apparatus can not be destroyed.
In the utility model embodiment, wireless charging transmitting terminal converter periodic transmission short pulse, and detect described wireless charging receiving terminal by described short pulse and whether be placed on charged area, if described wireless charging receiving terminal detected, then described wireless charging transmitting terminal converter enters charge mode.
In the utility model embodiment, the alternating voltage envelope on described wireless charging receiving coil modulates communication signal, and described communication signal is by the coupling in magnetic field, passes on wireless charging transmitting terminal inductance, forms the modulation signal of communication.Operation principle of the present utility model is as follows:
From low-pressure area distribution power taking, by wireless charging transmitting terminal converter and wireless charging transmitting coil, electric energy is become high-frequency alternating magnetic field, magnetic field can penetrate the dividing plate in high-pressure chamber and low pressure storehouse, wireless charging receiving terminal coil induces the voltage of alternation, by wireless charging receiving terminal converter, the voltage of alternation is adjusted into direct current, and to sensor power.Wireless charging receiving terminal converter is after acquisition initial voltage makes wireless charging receiving terminal converter circuit power on, can by load-modulate mode, instruction is sent to wireless charging transmitting terminal converter, wireless charging transmitting terminal converter can the voltage of control output end according to instruction, its voltage is made to keep stable, simultaneously, the measurement data of transducer also can be transferred to transmitting terminal by the mode of load-modulate by wireless charging receiving terminal converter, (not shown for host computer, host computer be exactly can remote monitoring and manipulation current device machine, be similar to computer) use.
Below in conjunction with accompanying drawing, further describe the technical solution of the utility model by embodiment.
As shown in Figure 5, wireless charging transmitting terminal converter comprises metal-oxide-semiconductor Q21, metal-oxide-semiconductor Q22, the metal-oxide-semiconductor Q23 and metal-oxide-semiconductor Q24 of four employing bridge circuits connections, and bus capacitor C22; Be electrically connected with bus capacitor C22 one end after metal-oxide-semiconductor Q22 is connected with the drain pin of metal-oxide-semiconductor Q24, and connect joint by resistance R ground connection; Be electrically connected with the other end of bus capacitor C22 after metal-oxide-semiconductor Q21 is connected with the source electrode pin of metal-oxide-semiconductor Q23; Certainly, in bridge circuit, triode also can be adopted to replace metal-oxide-semiconductor.
Metal-oxide-semiconductor Q21 is connected with the bridge circuit tie point of metal-oxide-semiconductor Q24 with metal-oxide-semiconductor Q22 by resonant capacitance C21 and described wireless charging transmitting terminal coil L2 with the bridge circuit tie point of metal-oxide-semiconductor Q22.
Four metal-oxide-semiconductors (Q21, Q22, Q23 and Q24) form bridge rectifier, and for direct voltage is converted to high-frequency alternating magnetic field, and four metal-oxide-semiconductors are N-type channel MOS tube.
As shown in Figure 6, wireless charging receiving terminal converter comprises rectification unit, modulating unit and DC/DC conversion unit; Rectification unit is used for alternating voltage to be converted to direct voltage; Modulating unit is used for exporting modulation signal according to alternating voltage; DC/DC conversion unit is used for direct voltage to carry out voltage transitions.
Wherein, rectification unit comprises metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q12, metal-oxide-semiconductor Q13 and metal-oxide-semiconductor Q14, the storage capacitor C13 of four employing bridge circuits connections.Modulating unit comprises throwing and unloads electric capacity C11, throws and unload electric capacity C12, switching tube Q15, switching tube Q16, resonant capacitance C15 and Detection capacitance C14;
Metal-oxide-semiconductor Q11 connects one end of DC to DC converter after being connected with the source electrode pin of metal-oxide-semiconductor Q13; Metal-oxide-semiconductor Q12 connects the other end of DC to DC converter after being connected with the drain pin of metal-oxide-semiconductor Q14; Storage capacitor C13 is connected in the two ends of DC to DC converter in parallel;
Metal-oxide-semiconductor Q11 is connected with the bridge-type electric connection point of metal-oxide-semiconductor Q14 with metal-oxide-semiconductor Q13 by resonant capacitance C15 and described wireless charging receiving terminal coil (L1) with the bridge circuit tie point of metal-oxide-semiconductor Q12; Detection capacitance C14 is connected in resonant capacitance C15 and wireless charging receiving terminal coil (L1) two ends in parallel;
Switching tube Q15 and Q16 in the present embodiment is metal-oxide-semiconductor (in another embodiment, switching tube also can be triode); Ground connection after the source electrode electrical connection of metal-oxide-semiconductor Q15 and Q16; The grid electrical connection of metal-oxide-semiconductor Q15 and Q16; The drain electrode of metal-oxide-semiconductor Q15 with Q16 is unloaded electric capacity C11 respectively by throwing and is thrown and unloads electric capacity C12 and formed with the two ends of Detection capacitance C14 and be connected.
Four metal-oxide-semiconductors (Q11, Q12, Q13 and Q14) are N-type channel MOS tube, and composition bridge rectifier, for being transformed into DC power supply by high-frequency alternating magnetic field.
As shown in Figure 7, the above-mentioned high pressure based on magnetic field isolation intercepts method of supplying power to, and its implementation procedure is as follows:
S1, wireless charging transmitting terminal converter power on, and the converting electric energy in low-voltage distribution district are become high-frequency alternating magnetic field;
S2, high-frequency alternating magnetic field penetrate high-low pressure storehouse dividing plate, are transmitted into high voltage supply district;
The wireless charging receiving terminal transducer senses in S3, high voltage supply district to high-frequency alternating magnetic field, and is rectified into direct voltage, for powering on and initialization of wireless charging receiving terminal converter completing circuit;
After S4, wireless charging receiving terminal converter power on, according to current state, by the mode of load-modulate, voltage conveying instruction can be sent to wireless charging transmitting converter;
After S5, wireless charging transmitting terminal converter receive voltage conveying instruction, the voltage of control output end, meanwhile, wireless charging receiving terminal converter also by the data transfer that senses to transmitter unit, for host computer.
The above-mentioned high pressure based on magnetic field isolation intercepts in method of supplying power to:
In step S1, after wireless charging transmitting terminal converter powers on, whether meeting periodic transmission short pulse, be placed on charged area for detecting wireless charging receiving terminal; Short pulse signal is presented as sine wave signal on receiving coil L2, as shown in figure 12; If wireless charging receiving terminal do not detected, then circulation continues transmitted pulse signal, if receiving terminal detected, then the communication signal that short pulse can feed back according to receiving terminal extends the burst length, if meet charge condition, then enters charge mode.
In step S2, the pulse signal in step S1, through coil, becomes the magnetic field of alternation, outwardly launches.
In step S3, in wireless charging receiving terminal converter, as shown in Figure 10, first the work of wireless charging receiving terminal converter need storage capacitor C3 to obtain an initial voltage, wireless charging receiving terminal converter is powered on, to activate the single-chip microcomputer of wireless charging receiving terminal converter, in the process activating receiving terminal, four metal-oxide-semiconductors (Q11, Q12, Q13 and Q14) are all turn off, and carry out work by crystal diode.Wireless charging receiving terminal coil is once be placed into charged area, alternating voltage is induced in the magnetic field that wireless charging receiving terminal coil L1 will produce at wireless charging transmitting terminal, ac voltage rectifier can be become direct voltage by wireless charging receiving terminal, in order to complete powering on and initialization of wireless charging receiving terminal circuit.Once initialization is done, single-chip microcomputer meeting control switch pipe Q15 and switching tube Q16, unload by throwing to unload electric capacity C11 and throw the resonance frequency that electric capacity C12 changes system, thus set up communication between wireless charging transmitting terminal converter and wireless charging receiving terminal converter.
In S4, switching tube Q15 and switching tube Q16 timing open or turn off, unload electric capacity C11 by throwing and throw the input circuit or incision that unload electric capacity C12 timing, now can change the resonance frequency of system, cause the voltage jump on wireless charging receiving coil L1, this just makes the alternating voltage envelope on Wireless charging coil L1 modulate a communication signal, the communication signal of wireless charging receiving terminal converter modulation can by the coupling in magnetic field, pass in wireless charging transmitting terminal inductance L 2, material is thus formed the modulation signal of a communication, as shown in figure 11.
By gathering VC voltage over the ground, after signal receiving system, obtain a pure digi-tal signal, what this signal sent into single-chip microcomputer catches mouth, is considered as first via detection signal, is considered as code1.
What the voltage on VC embodied is apparent power, comprises active component and idle composition, and in full-load range, the power of active component and idle composition is change, may cause code1 communication failures.For this reason, increase another road detection signal, this communication carries out rectification by gathering Ir, is considered as code2.Ir is the input current of transmitting terminal, embody real component, when load capacity is larger time, code2 communication can be stronger, by parameter designing, allow the communication of code2 and code1 in full-load range, form complementation, and by the loss situation according to communication, alternately switch two-way communication signal (code2 and code1), to ensure the reliability of communication.
The work-based logic of Code1 and code2 as shown in Figure 10.Wireless charging transmitting terminal converter powers on initially, first starts code1 communication, if detected that wireless charging receiving end converter exists, then enters charging; Otherwise be replaced with code2 communication, detect whether there is wireless charging receiving terminal converter, if two-way communication does not all detect wireless charging receiving terminal converter, then cycle detection, until wireless charging receiving end converter detected, and enters charge mode.
Under charge mode, if communication signal is lost for a long time, then switch a communication, see that the communication whether caused because communication signal is bad is lost, if after communication switches, can communication be received, then continue to operate in charge mode, if communication is still lost, then think that wireless charging receiving terminal converter is not in chargeable range, wireless charging transmitting terminal converter enters standby, continues to detect communication, until wireless charging receiving terminal converter detected.
In S5, wireless charging receiving terminal converter sends to wireless charging transmitting terminal converter by given for output voltage, is regulated the output voltage of receiving terminal by wireless charging transmitting terminal converter, obtains the output voltage V1 expected, as shown in Figure 6.Meanwhile, single-chip microcomputer can control four metal-oxide-semiconductors (Q11, Q12, Q13 and Q4) and be operated in synchronous rectification state, improves system effectiveness.Output voltage V1 can be transformed into required voltage further through rear class DC/DC circuit.
The described high pressure based on magnetic field isolation intercepts method of supplying power to, and also comprise the closed loop control process of wireless charging transmitting terminal converter, its rate-determining steps is as follows:
Do difference by input voltage is given to present input voltage, obtain an electric voltage feed forward error amount; This error amount, after pid algorithm, obtains input voltage feed forward.
This input voltage feed forward and input voltage feed back acting in conjunction, for regulation output voltage V1.
The implementation of the synchronous rectification in wireless charging receiving terminal converter is as follows:
The voltage at the Detection capacitance C14 two ends of wireless charging receiving terminal converter, when voltage is greater than zero time, in bridge rectifier, metal-oxide-semiconductor Q11 and metal-oxide-semiconductor Q14 is open-minded, metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13 closes, voltage forms loop by metal-oxide-semiconductor Q11, storage capacitor C13 (comprising successive load) and metal-oxide-semiconductor Q14, because the equiva lent impedance of metal-oxide-semiconductor is much smaller than diode, therefore, diode with metal-oxide-semiconductor parallel connection is bypassed actually (diode is generally the parasitic diode of metal-oxide-semiconductor), can reduce power consumption.
When voltage is minus time, in bridge rectifier, metal-oxide-semiconductor Q12 and metal-oxide-semiconductor Q13 is open-minded, metal-oxide-semiconductor Q11 and metal-oxide-semiconductor Q14 closes, voltage forms loop by metal-oxide-semiconductor Q13, storage capacitor C13 (comprising successive load) and metal-oxide-semiconductor Q12, equally also be the diode bypassing metal-oxide-semiconductor parallel connection, to reduce power consumption.
The voltage stabilizing of V1 obtains in the following way:
Turning on and off of switching tube Q15 and switching tube Q16 timing, unloads electric capacity C11 by throwing and throws the input circuit and incision that unload electric capacity C12 timing, material is thus formed the modulation signal of a communication, as shown in figure 11.
When switching tube Q15 and switching tube Q16 opens, cut throwing by force and unload electric capacity C11 and electric capacity C12 is unloaded in throwing, now can change the resonance frequency of system, cause the voltage jump on wireless charging receiving coil L1, this just makes the alternating voltage envelope on Wireless charging coil L1 modulate a communication signal, comprises the voltage and current information of current output in this signal.This modulation signal by wireless charging receiving coil, is coupled to wireless charging transmitting coil L2, allows the upper existence one of wireless charging transmitting coil L2 with the modulation signal of frequency.
Complete communication signal, by rectification, is delivered to single-chip microcomputer and is processed by the circuit of wireless charging transmitting terminal converter, and single-chip microcomputer, by extracting the voltage and current information of the current output comprised in communication signal, carries out closed-loop control.
Magnetic field isolation power supply implementation procedure is: wireless charging transmitting terminal converter is from low-pressure area distribution power taking, and be DC power supply by bridge rectifier rectification, then by wireless charging transmitting terminal converter and transmitting coil L2, utilize PFM or PWM mode that electric energy is become high-frequency alternating magnetic field, magnetic field can penetrate the dividing plate in high-pressure chamber and low pressure storehouse, wireless charging receiving terminal coil induces the voltage of alternation, by wireless charging receiving terminal converter, the voltage of alternation is adjusted into direct current, and to sensor power; Wireless charging receiving terminal converter is after acquisition initial voltage makes wireless charging receiving terminal converter circuit power on, can by load-modulate mode, instruction is sent to wireless charging transmitting terminal converter, wireless charging transmitting terminal converter can the voltage of control output end according to instruction, its voltage is made to keep stable, meanwhile, the measurement data of transducer also can be transferred to transmitting terminal by the mode of load-modulate by wireless charging receiving terminal converter, uses for host computer.
Be described below in detail and intercept the closed loop control method of powering based on the high pressure of magnetic field isolation, as shown in Figure 8; In Fig. 8, embody a jth error frame, i is the i-th bat.(j, i) is meant to i-th in a jth error frame and claps control;
that the electric current loop input that error current frame is formed is given;
be that current output current exports sampled value, namely go up the steady-state value of an error frame after regulating and controlling;
The input of current flow ring is given to be formed by lower equation:
C is the control information comprised in error current frame, the information that the communication signal sent by receiving terminal comprises, it is the output of Voltage loop, embodiment be the coefficient that Voltage loop error (being obtained with the given difference of output voltage by output voltage) obtains after PID reconciles.
The error of electric current loop is obtained by following formula:
E
(j, i)after pid algorithm, with input voltage feed forward summation, obtain PID
(j, i), PID
(j, i)being the output of control ring, in order to obtain final control signal, needing PID
(j, i)calibrate, calibrate and determined by following formula:
v
(j,i)＝v
(j,i-1)-S
v·PID
(j,i)
After calibration, by v
(j, i)carry out necessary amplitude limit, then just for transmitting terminal power inverter, to reach the stable object exported.
Input voltage feed forward obtains as follows:
Difference is done to present input voltage Vin by Vin_ref (namely input voltage is given), obtain an electric voltage feed forward error amount, this error amount (can only with a proportional algorithm and P algorithm) after pid algorithm, obtains the output of input voltage feed forward.By increasing the link of input voltage feed forward in the present embodiment, to increase the adaptation of device to external power source.
To sum up, the utility model provides a kind of high pressure based on magnetic field isolation to intercept method of supplying power to, the transducer on high-tension apparatus operation monitoring backstage can obtain stable, high-quality power supply, no longer need to regularly replace battery, also be no longer necessary for extending battery life and reduced the detection perform of transducer, also no longer need to worry to detect the blind area existed simultaneously, realize the leap from periodic inspection to peace trouble hunting, thus reduce service work and the maintenance cost of high-tension apparatus, improve operational reliability and the operation of power networks quality of high-tension apparatus greatly.
Should be understood that, the above-mentioned statement for the utility model preferred embodiment is comparatively detailed, and therefore can not think the restriction to the utility model scope of patent protection, scope of patent protection of the present utility model should be as the criterion with claims.
Claims (10)
1. the high pressure based on magnetic field isolation intercepts an electric supply installation, it is characterized in that, comprising:
Wireless charging transmitting terminal converter;
Wireless charging transmitting coil, is connected with described wireless charging transmitting terminal converter;
Wireless charging receiving coil, for being coupled with described wireless charging transmitting coil; And
Wireless charging receiving terminal converter, is connected with described wireless charging receiving coil;
Wherein, described wireless charging transmitting terminal converter is placed in low-voltage distribution district, described wireless charging receiving terminal converter is placed in high voltage supply district, has high-low pressure storehouse dividing plate to isolate between described wireless charging transmitting terminal converter and described wireless charging receiving terminal converter.
2. the high pressure based on magnetic field isolation according to claim 1 intercepts electric supply installation, it is characterized in that, short pulse launched by described wireless charging transmitting terminal converter, and detect described wireless charging receiving terminal by described short pulse and whether be placed on charged area, if described wireless charging receiving terminal detected, then described wireless charging transmitting terminal converter enters charge mode.
3. the high pressure based on magnetic field isolation according to claim 1 intercepts electric supply installation, it is characterized in that, described wireless charging transmitting terminal converter comprises metal-oxide-semiconductor Q21, metal-oxide-semiconductor Q22 that four employing bridge circuits connect, metal-oxide-semiconductor Q23 and metal-oxide-semiconductor Q24, resonant capacitance C21 and bus capacitor C22;
Be electrically connected with bus capacitor C22 one end after metal-oxide-semiconductor Q22 is connected with the drain pin of metal-oxide-semiconductor Q24, and the drain pin of metal-oxide-semiconductor Q22 and metal-oxide-semiconductor Q24 is by resistance R ground connection; Be electrically connected with the other end of bus capacitor C22 after metal-oxide-semiconductor Q21 is connected with the source electrode pin of metal-oxide-semiconductor Q23;
Metal-oxide-semiconductor Q21 is connected with the bridge circuit tie point of metal-oxide-semiconductor Q24 with metal-oxide-semiconductor Q22 by resonant capacitance C21 and described wireless charging transmitting terminal coil with the bridge circuit tie point of metal-oxide-semiconductor Q22.
4. the high pressure based on magnetic field isolation according to claim 1 intercepts electric supply installation, and it is characterized in that, described wireless charging receiving terminal converter comprises rectification unit, modulating unit and DC/DC conversion unit;
Described rectification unit is used for alternating voltage to be converted to direct voltage;
Described modulating unit is used for exporting modulation signal according to described alternating voltage;
Described DC/DC conversion unit is used for described direct voltage to carry out voltage transitions.
5. the high pressure based on magnetic field isolation according to claim 4 intercepts electric supply installation, it is characterized in that, described rectification unit comprises metal-oxide-semiconductor Q11, metal-oxide-semiconductor Q12, metal-oxide-semiconductor Q13 and metal-oxide-semiconductor Q14, the storage capacitor C13 of four employing bridge circuits connections;
Metal-oxide-semiconductor Q11 connects one end of DC to DC converter after being connected with the source electrode pin of metal-oxide-semiconductor Q13; Metal-oxide-semiconductor Q12 connects the other end of DC to DC converter after being connected with the drain pin of metal-oxide-semiconductor Q14; Storage capacitor C13 is connected in the two ends of DC to DC converter in parallel.
6. the high pressure based on magnetic field isolation according to claim 5 intercepts electric supply installation, it is characterized in that, described modulating unit comprises throwing and unloads electric capacity C11, throws and unload electric capacity C12, switching tube Q15, switching tube Q16, resonant capacitance C15 and Detection capacitance C14;
Metal-oxide-semiconductor Q11 is connected with the bridge-type electric connection point of metal-oxide-semiconductor Q14 with metal-oxide-semiconductor Q13 by resonant capacitance C15 and described wireless charging receiving terminal coil with the bridge circuit tie point of metal-oxide-semiconductor Q12;
Detection capacitance C14 is connected in resonant capacitance C15 and wireless charging receiving terminal coil two ends in parallel;
Switching tube Q15 and Q16 is metal-oxide-semiconductor; Ground connection after the source electrode electrical connection of metal-oxide-semiconductor Q15 and Q16; The grid electrical connection of metal-oxide-semiconductor Q15 and Q16; The drain electrode of metal-oxide-semiconductor Q15 with Q16 is unloaded electric capacity C11 respectively by throwing and is thrown and unloads electric capacity C12 and formed with the two ends of Detection capacitance C14 and be connected.
7. the high pressure based on magnetic field isolation according to claim 6 intercepts electric supply installation, and it is characterized in that, described metal-oxide-semiconductor is N-type channel MOS tube.
8. the high pressure based on magnetic field isolation according to claim 6 intercepts electric supply installation, and it is characterized in that, the source electrode pin of described metal-oxide-semiconductor is all connected with drain pin by a diode.
9. the high pressure based on magnetic field isolation according to claim 1 intercepts electric supply installation, it is characterized in that, alternating voltage envelope on described wireless charging receiving coil modulates communication signal, and described communication signal is by the coupling in magnetic field, pass on described wireless charging transmitting coil, form the modulation signal of communication.
10. the high pressure based on magnetic field isolation according to claim 9 intercepts electric supply installation, it is characterized in that, described wireless charging transmitting terminal converter is also for doing difference by input voltage is given with present input voltage, obtain an electric voltage feed forward error amount, and by this error amount after pid algorithm, obtain input voltage feed forward.
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| CN201520505816.XU CN204794381U (en) | 2015-07-13 | 2015-07-13 | High pressure separation power supply unit based on magnetic field keeps apart |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448732A (en) * | 2018-06-13 | 2018-08-24 | 北京有感科技有限责任公司 | Wireless power supply system |
| CN110913534A (en) * | 2019-12-31 | 2020-03-24 | 佛山市利升光电有限公司 | LED lamp and power supply circuit thereof |
-
2015
- 2015-07-13 CN CN201520505816.XU patent/CN204794381U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448732A (en) * | 2018-06-13 | 2018-08-24 | 北京有感科技有限责任公司 | Wireless power supply system |
| CN108448732B (en) * | 2018-06-13 | 2024-04-26 | 合肥有感科技有限责任公司 | Wireless power supply system |
| CN110913534A (en) * | 2019-12-31 | 2020-03-24 | 佛山市利升光电有限公司 | LED lamp and power supply circuit thereof |
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