CN102751776A - High-capacity reversible charging and discharging device - Google Patents
High-capacity reversible charging and discharging device Download PDFInfo
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Abstract
The invention provides a high-capacity reversible charging and discharging device which is characterized by comprising a reversible electric power storage and charge-discharge unit, a data display control unit, an insulation detection unit, a storage battery, a storage battery detection unit and an upper computer, wherein the reversible electric power storage and charge-discharge unit sequentially comprises a transformer, a space vector pulse width modulation (SVPWM) reversible three-phase rectifier inverter bridge, a digital signal processor (DSP) data controller and a two-way DC (direct current)/ DC conversion module used for converting charging and discharging modes; the reversible electric power storage and charge-discharge unit is led out from a high-voltage system bus; an output end of the reversible electric power storage and charge-discharge unit is connected with the storage battery; the data display control unit is respectively connected with the reversible electric power storage and charge-discharge unit, the insulation detection unit and the storage battery detection unit; the storage battery detection unit is connected with the storage battery by data; and the insulation detection unit is connected with an output end of the reversible electric power storage and charge-discharge unit. The reversible electric power storage and charge-discharge unit is added into the device, so that the device integrates reversible charging and discharging; therefore, the device can be used for rectifying charging and discharge inversion to realize grid-connected operation with the main power grid.
Description
Technical field
The present invention relates to a kind of batteries charge and discharge device, particularly is the reversible charge and discharge device of a kind of big capacity.
Background technology
At present, the battery charging plant on China naval vessel is progressively replaced by the direct-current switch power supply of power electronics by traditional Set Type DC power supply, and along with the raising of defence equipment automatization level, the naval vessel battery charging plant also has significant progress.Naval vessel battery charge and discharge device present situation is following:
1. naval vessel battery charge and discharge device; Generally by direct-current switch power supply as charging device, ohmic load is as electric discharge device, discharge energy does not reclaim and wastes; This contradiction on Small Vessel is also outstanding, however in, will be the loss that can not be ignored on the large ship.
2. the normal mode that also only limit to constant current, constant voltage, floating charge in the charging modes of naval vessel battery charge and discharge device and the maintaining, fills and discharge soon, charging and discharging of accumulator and maintaining can not be in the optimization work state of self.This has reduced the efficient and the life-span of accumulator cell charging and discharging and maintaining, thereby greatly reduces the integration capability of naval vessel Mechatronic Systems.
3. up to the present the naval vessel battery charge and discharge device had not also had the capacity of pair storage battery to monitor; And the detection of the capacity of storage battery will the most effectively reflect accumulator property and ruuning situation; Also be the significant data of naval vessel war preparedness simultaneously, therefore should detect above-mentioned key parameter.
Finding thus, the reversible battery charge and discharge device in naval vessel that improves ship survivability and operational performance seems particularly urgent and important.
In the battery charge and discharge device of large ship, realize High Power Factor, low harmonic wave, high efficiency and discharge and recharge one, the reversible recovery of energy, the functions such as real-time online assessment in intelligent recharge and discharge, reliability and vitality guarantee are the directions of battery charge and discharge device problem demanding prompt solution and development simultaneously.Mainly contain:
⑴. discharging and recharging aspect the power supply; Employing possesses the big capacity Switching Power Supply of reversible rectification of SVPWM technology as discharging and recharging power supply; The main circuit that is characterized in discharging and recharging one is a charging circuit; Also be discharge inversion energy recovery circuit, make facility compact, improve the device utilization rate, when realizing conventional discharging and recharging, also can provide pulse to discharge and recharge function.
⑵. employing possesses SVPWM technology realization High Power Factor, the harmonic wave composition is greatly improved and reduced simultaneously to high efficiency, and two closed loops of employing electric current and voltage had both guaranteed to discharge and recharge constant current, constant voltage is controlled stable state accuracy, and good dynamic response performance is also arranged.
⑶. in the storage battery context of detection, adopt the autonomous sensing network that distributes, realize that voltage, temperature, the internal resistance of single lattice storage battery detects, react storage battery health status better.
⑷. combine on the basis that single lattice storage battery detects, realizing that real-time online that storage battery is in intelligent charge and discharge system and generator reliability and the vitality guarantee of self optimization work state is assessed becomes possibility.
⑸. in design, demonstrate fully modularization, intellectuality, so that system's flexible configurations.
Demand to the large ship battery charge and discharge device; Develop the reversible battery charge and discharge device of a kind of realization: integrate the charge and discharge function; Both can be used as the rectification charging power supply of storage battery; Realization can be used as the inverter of battery discharging again to storage battery constant current, constant voltage charge, and the energy during the storage battery deep discharge feeds back to electrical network.And in the process of storage battery charge and discharge, all can realize the sineization and High Power Factor, low harmonic pollution of current on line side, energy-saving effect is remarkable, and it has sufficient realistic meaning and the value of applying to the utilization benefit that improves equipment.
Summary of the invention
The technical problem that the present invention mentions in order to solve in the background technology provides a kind of big capacity acid non-maintaining reversible charge and discharge device.
In order to realize above-mentioned technical purpose, the present invention adopts following technical scheme:
The reversible charge and discharge device of a kind of big capacity; It is characterized in that: this device comprises that reversible electric power storage charge/discharge unit, data show control unit, insulation detecting unit, batteries; Storage battery detecting unit and host computer; Said reversible electric power storage charge/discharge unit comprises transformer, the reversible three phase rectifier inverter bridge of SVPWM, DSP recording controller and the two-way DC/DC conversion module of changing as charge and discharge mode successively; Said reversible electric power storage charge/discharge unit picks out from the high-pressure system bus, and the output of reversible electric power storage charge/discharge unit connects batteries, and data show the control unit and are connected with reversible electric power storage charge/discharge unit, insulation detecting unit and storage battery detecting unit data respectively; The storage battery detecting unit is connected with the batteries data, and the insulation detecting unit connects the output to reversible electric power storage charge/discharge unit.
This device also is provided with time reversible electric power storage charge/discharge unit, inferior batteries and inferior storage battery detecting unit; Said time reversible electric power storage charge/discharge unit, inferior batteries and inferior storage battery detecting unit are identical with reversible electric power storage charge/discharge unit, batteries and storage battery detecting unit structure; Said reversible electric power storage charge/discharge unit connects earlier to internal bus, passes through K switch again
4Connect to batteries, said time reversible electric power storage charge/discharge unit picks out from high voltage bus, and the output of inferior reversible electric power storage charge/discharge unit connects earlier to internal bus, passes through K switch again
6Connect to inferior batteries, the internal bus section between reversible electric power storage charge/discharge unit and time reversible electric power storage charge/discharge unit is provided with K switch
5, said time the storage battery detecting unit is connected with time batteries data, and said data show the control unit and are connected with time storage battery detecting unit data with inferior reversible electric power storage charge/discharge unit simultaneously with the same manner with the insulation detecting unit.
Said two-way DC/DC conversion module mainly comprises charging IGBT, discharge IGBT, inductance L
2And voltage detecting branch road; The positive output end serial connection charge IGBT of the reversible three phase rectifier inverter bridge of said SVPWM; The output of the reversible three phase rectifier inverter bridge of SVPWM is parallel discharge IGBT again; Its output shunt voltage detection branch more then, the terminal series inductance L of the positive output of two-way DC/DC conversion module
2To batteries, the terminal series current transducer of the negative output of two-way DC/DC conversion module is to batteries.
The reversible three phase rectifier inverter bridge of said SVPWM is composed in parallel by 6 IGBT in twos, and the three-phase output end of said transformer passes through inductance L respectively
1Insert the node between two IGBT; The output of the reversible three phase rectifier inverter bridge of said SVPWM is large bulk capacitance C of parallel connection earlier; Parallelly connected again time voltage detecting branch road; Said DSP recording controller detects the signal of transformer output, voltage detecting branch road, inferior voltage detecting branch road and current sensor respectively, and the reversible three phase rectifier inverter bridge of SVPWM, charging IGBT and discharge IGBT action are controlled in the control of DSP recording controller respectively.
Said DSP recording controller shows the control unit with host computer and data respectively through the CAN bus and links to each other, and data show the control unit and are connected with insulation detecting unit data with the storage battery detecting unit.
Said voltage detecting branch road all is to be in series by a resistance and a voltage sensor with time voltage detecting branch road.
Said data show the control unit and adopt built-in touch monitoring panel computer, and said insulation detecting unit adopts 500V class of insulation alternating current-direct current on-line insulation monitoring alarm, and said storage battery detecting unit adopts explosion-proof intrinsic safety level distributed storage battery on-line measuring device.
Beneficial effect of the present invention is: the present invention adopts and has added reversible electric power storage charge/discharge unit, makes reversible the discharging and recharging of energy of this device be one, both rectifiable chargings, and also can discharge inversion and main electrical network are incorporated into the power networks; But 2 charge/discharge units that are provided with simultaneously are independent operating both, but also parallel running, and device is equipped with data display monitoring unit, realizes man-machine interaction; Device has the measure of fail safe multiple protective simultaneously: inversion grid connection anti-" isolated island " detects off-grid protection, inlet wire open-phase protection, AC network side current detecting and overcurrent, short-circuit protection, VD detects and under-voltage/overvoltage protection, average anode current detection and overcurrent protection, insulation resistance detection and protection, overtemperature protection etc.
Description of drawings
Fig. 1 is a structure principle chart of the present invention;
Fig. 2 is the electrical schematic diagram of the reversible electric power storage charge/discharge unit of the present invention;
Two closed loop current vector trackings control block diagrams when Fig. 3 is a charging rectifier of the present invention;
Fig. 4 is the present invention's two closed loop electric current and voltage vector trackings control block diagrams when discharging inversion;
Fig. 5 is the electrical schematic diagram of the two-way DC/DC conversion of the present invention buck chopper charge in batteries;
Fig. 6 is the electrical schematic diagram of the two-way DC/DC conversion of the present invention boost chopper battery discharging.
Embodiment
Referring to Fig. 1; The reversible charge and discharge device of a kind of big capacity; Comprise that reversible electric power storage charge/discharge unit, data show control unit, insulation detecting unit, batteries; Storage battery detecting unit and host computer; Reversible electric power storage charge/discharge unit comprises the reversible three phase rectifier inverter bridge of transformer 1, SVPWM 2, DSP recording controller successively and as the two-way DC/DC conversion module 3 of charge and discharge mode conversion, reversible electric power storage charge/discharge unit picks out from the high-pressure system bus, and the output of reversible electric power storage charge/discharge unit connects batteries; Data show the control unit and are connected with reversible electric power storage charge/discharge unit, insulation detecting unit and storage battery detecting unit data respectively; The storage battery detecting unit is connected with the batteries data, and the insulation detecting unit connects the output to reversible electric power storage charge/discharge unit, and data show the control unit and adopt built-in touch monitoring panel computer; The insulation detecting unit adopts 500V class of insulation alternating current-direct current on-line insulation monitoring alarm, and the storage battery detecting unit adopts explosion-proof intrinsic safety level distributed storage battery on-line measuring device.
In order to increase redundancy, improve reliability, then the present invention can further adopt following structure:
Referring to Fig. 1; This installs the reversible charge and discharge device of a kind of big capacity; Comprise that reversible electric power storage charge/discharge unit, data show control unit, insulation detecting unit, batteries; Storage battery detecting unit and host computer; Reversible electric power storage charge/discharge unit comprises the reversible three phase rectifier inverter bridge of transformer 1, SVPWM 2, DSP recording controller successively and as the two-way DC/DC conversion module 3 of charge and discharge mode conversion, reversible electric power storage charge/discharge unit picks out from the high-pressure system bus, is provided with K switch between reversible electric power storage charge/discharge unit and the high-pressure system bus
123; The output of reversible electric power storage charge/discharge unit connects batteries; Meanwhile also be provided with time reversible electric power storage charge/discharge unit, inferior batteries and inferior storage battery detecting unit; Inferior reversible electric power storage charge/discharge unit, inferior batteries and inferior storage battery detecting unit are identical with reversible electric power storage charge/discharge unit, batteries and storage battery detecting unit structure, and reversible electric power storage charge/discharge unit connects earlier to internal bus, passes through K switch again
44 connect to batteries, and inferior reversible electric power storage charge/discharge unit picks out from high voltage bus, is provided with K switch between inferior reversible electric power storage charge/discharge unit and the high-pressure system bus
224, the output of inferior reversible electric power storage charge/discharge unit connects earlier to internal bus, passes through K switch again
65 connect to inferior batteries, and the internal bus section between reversible electric power storage charge/discharge unit and time reversible electric power storage charge/discharge unit is provided with K switch
56, inferior storage battery detecting unit is connected with time batteries data, and data show the control unit and are connected with reversible electric power storage charge/discharge unit, insulation detecting unit and storage battery detecting unit data respectively, are provided with K switch between data apparent control unit and the high voltage bus
325; The storage battery detecting unit is connected with the batteries data; The insulation detecting unit connects the output to reversible electric power storage charge/discharge unit, and data show the control unit and are connected with time storage battery detecting unit data with inferior reversible electric power storage charge/discharge unit simultaneously with the same manner with the insulation detecting unit.
Operation principle of the present invention:
1) according to top technical scheme and embodiment, then the present invention's table apparatus in configuration is joined two charge/discharge units, and can be two group storage batteries and charge respectively, can parallel connection be group storage battery charging simultaneously also, work as K switch
44, K
65 closures, K switch
5During 6 disconnections, two independent corresponding group storage battery groups of charge/discharge unit are supplied power, through K
44, K
56, K
65 switch, subsequent use each other, increase redundancy, improve reliability; Simultaneously,, a group storage battery can it be supplied power two table apparatus parallel connections when needing fast charging and discharging, to satisfy the requirement of high current capacity; Work as K switch
5Before the closure, K switch
4, K
6Can not be closed simultaneously, realize K switch through interlocking
5When closed, K switch
4, K
6Can only one the road closed, only a group storage battery group is wherein supplied power when guaranteeing parallel connection.
2) on networking is formed; Every charge and discharge device is supported data incoming communication interface; Be connected with the distributed storage battery detecting unit communication that can match,, automatic compensation intelligent recharge and discharge and accumulator capacity monitoring function be provided to detect voltage, temperature and the internal resistance (capacity) of cell batteries; Support the CAN bus network to insert simultaneously, realize the load sharing control when 2 charge/discharge units are in parallel; Simultaneously communication interface is provided so as with the master system networking.
3) on function, charge and discharge device is that reversible the discharging and recharging of energy is one, both rectifiable chargings, and also can discharge inversion and main electrical network are incorporated into the power networks; But 2 built-in charge/discharge units are independent operating both, but also parallel running.Device is equipped with data display monitoring unit, realizes man-machine interaction.Device has the measure of fail safe multiple protective simultaneously: inversion grid connection anti-" isolated island " detects off-grid protection, inlet wire open-phase protection, AC network side current detecting and overcurrent, short-circuit protection, VD detects and under-voltage/overvoltage protection, average anode current detection and overcurrent protection, insulation resistance detection and protection, overtemperature protection etc.
4) data show the control unit: the demonstration of demonstration of charge and discharge device and storage battery operating condition and fault alarm thereof is provided; Support to touch input setup parameter setting, modification and lock-related operations are provided; Realize man-machine interaction, insulating monitoring unit: bus, direct current outlet cable insulation monitoring function are provided.
Reversible electric power storage charge/discharge unit: the core cell that is charge and discharge device; Charge/discharge unit has the current limliting constant voltage and discharges and recharges mode of operation; 2 unit can subsequent usely each other and parallelly connected use the mode of operation that realizes fast charging and discharging simultaneously, the charge/discharge capacity of 0.1C-0.2C are provided, when realizing quick charge; Solve the depolarising problem of batteries, improve the availability of batteries.Charge and discharge device, the energy recuperation in the time of realizing the batteries deep discharge well, the service efficiency of the raising energy, concrete reversible electric power storage charge/discharge unit structure is following: referring to Fig. 2, the reversible three phase rectifier inverter bridge of SVPWM is by 6 IGBT12; 13; 14; 15; 16; 17 compose in parallel in twos, and the three-phase output end of transformer passes through inductance L respectively
118 insert the node between two IGBT, and the output of the reversible three phase rectifier inverter bridge 2 of SVPWM is large bulk capacitance C19 of parallel connection earlier, parallelly connected again time voltage detecting branch road 20, and two-way DC/DC conversion module 3 mainly comprises charging IGBT7, discharge IGBT 8, inductance L
29 and voltage detecting branch road 10; The positive output end serial connection charge IGBT7 of the reversible three phase rectifier inverter bridge 2 of SVPWM; The output of the reversible three phase rectifier inverter bridge 2 of SVPWM is parallel discharge IGBT8 again; Its output shunt voltage detection branch 10 more then, the terminal series inductance L of the positive output of two-way DC/DC conversion module 3
29 to batteries; The terminal series current transducer 11 of the negative output of two-way DC/DC conversion module 3 is to batteries; The DSP recording controller detects the signal of transformer 1 output, voltage detecting branch road 10, inferior voltage detecting branch road 20 and current sensor 11 respectively, and the reversible three phase rectifier inverter bridge of SVPWM 2, charging IGBT7 and discharge IGBT 8 actions are controlled in DSP recording controller control respectively.The DSP recording controller shows the control unit with host computer and data respectively through the CAN bus and links to each other, and data show the control unit and are connected with insulation detecting unit data with the storage battery detecting unit.Voltage detecting branch road 10 all is to be in series by a resistance 21 and a voltage sensor 22 with time voltage detecting branch road 20.
According to top technical scheme; The structure that show the control unit in the storage battery data, discharges and recharges the energy conversion pattern is formed and comprehensively aspect its main hardware is adopted army grade control computer based on extensive use to constitute data to show the control man-machine interface; And be the charge and discharge device that the power switch formation discharges and recharges one for control core and high power density IGBT based on High Performance DSP; Match the storage battery data acquisition unit simultaneously; Charge and discharge device can compensate intelligent recharge and discharge and capacity monitoring and evaluation automatically to batteries, and realizes batteries and relevant device subsequent use each other in emergency circumstances; The principle that combines comprehensive utilization of energy simultaneously is to the batteries maintaining of regularly discharging; Can show in real time and the malfunction monitoring warning that storage battery detects the autocompensation charging measure to the apparatus system work condition state, it is to realize that effectively storage battery compensates the key of intelligent recharge and discharge and battery capacity monitoring automatically that storage battery detects; The optional for this reason distributed storage battery detecting unit of joining, so that voltage, temperature and the internal resistance of monitoring cell batteries, and the voltage and current that detects batteries; Insert charge and discharge device through communication interface; Require the distributed storage battery detecting unit on the basis of intrinsic safe explosion-proof type design, adopt epoxy resin can or flame-proof type shell, sealing joint connects; Improve the grade of explosion-proof design, ensure reliability and security.
The operation principle of the reversible electric power storage charge/discharge unit of the present invention: charge/discharge unit is made up of main circuit, control circuit.Employing is that the reversible three phase rectifier inverter bridge 2 of device for power switching constitutes main circuit with IGBT, adopts voltage, the current double closed-loop control intelligence control circuit of DSP implementation space vector pulse-width modulation SVPWM.When reversible three phase rectifier inverter bridge had both also realized as inverter bridge that the two-way change of energy was sent as rectifier bridge; CAN communication interface through DSP; Some key parameters of reversible module and various fault-signal detected send data to and show the control unit; Some of the unit of the apparent control of data simultaneously are provided with under the parameter passes to DSP, realizes man-machine interaction, specifically can be divided into following two kinds of situation:
DC voltage-stabilizing output control when 1) charging
Referring to Fig. 3; During charging; Energy flows to storage battery by electrical network, reversible three phase rectifier inverter bridge 2 DC voltage-stabilizings output, and two closed loop current vector tracking control block diagrams are as shown in Figure 3; Concrete implementation procedure is following: detected three-phase input current obtains the real component Id (DC quantity) and the idle component Iq (DC quantity) of electric current through 3/2 conversion and rotation transformation.The output of Voltage loop is as active current component set-point Id*, and reactive current component set-point Iq* is zero.Adopt feedforward decoupling zero strategy; After adding the decoupling zero link; Two dq component upd*, upq* that current inner loop regulates after computing, to form the AC side modulation voltage again through PI; Get three-phase alternating current side modulation voltage set-point upa*, upb*, upc* through rotation transformation and 2/3 conversion then, after the PWM modulation circuit obtains the drive signal of three-phase rectifier;
Tracking Control is incorporated into the power networks when 2) discharging
Generate output reaches the main electrical network of 1600KW at least relatively; The discharge inversion of 66KW charge and discharge device is adopted and directly is incorporated into the power networks; Referring to Fig. 4, during discharge, energy flows to electrical network by storage battery; Reversible three phase rectifier inverter bridge inversion grid connection operation exchanges follows the tracks of main electrical network voltage stabilizing output, and two closed loop electric current and voltage vector tracking control block diagrams are as shown in Figure 4.Concrete implementation procedure is following: detected three-phase voltage is through 3/2 conversion and rotation transformation; The real component Ud* (DC quantity) that obtains voltage for track reference value and idle component Uq (DC quantity) as value of feedback; Reactive voltage component set-point Uq*=0; Simultaneously detected three-phase current obtains the real component Id (DC quantity) and the idle component Iq (DC quantity) of electric current through 3/2 conversion and rotation transformation.The output of Voltage loop is as active current component set-point Id*, reactive current component set-point Iq*.Adopt feedforward decoupling zero strategy; After adding the decoupling zero link; Two dq component upd*, upq* that current inner loop regulates after computing, to form the AC side modulation voltage again through PI; Get three-phase alternating current side modulation voltage set-point upa*, upb*, upc* through rotation transformation and 2/3 conversion then, after the PWM modulation circuit obtains the drive signal of three-phase rectifier.
Two closed loop control method control precisions are higher, and not only accurately floating voltage, current-order when stable state realize floating, and dynamic property are also better.Therefore, have the reversible module of space vector SVPWM commutation inversion bridge and have following characteristics:
A. have the bidirectional reversible DC voltage-stabilizing, both rectifiable also possibility of reversal feedbacks of charging adopt the control of outer shroud voltage close loop to make the dc voltage voltage stabilizing;
B. have High Power Factor and high efficiency, adopt reactive current to be given as zero instruction trace compensation control, make it is that rectification or inversion all have high power factor and high efficient;
C. have the ground harmonic component, adopt space vector SVPWM pulse-width modulation, and adopt reactive current to be given as zero instruction trace compensation control, can reduce the harmonic wave composition of net top-cross stream voltage effectively.
The present invention meanwhile instead " isolated island " detects automatic off-grid; Island effect is meant when main electrical network during owing to reason interruption of power supply such as electric fault, misoperation or natural causes; The inverter that is incorporated into the power networks fails to detect power down mode immediately and break away from electrical network, the self-energizing isolated island that an electrical network that makes inversion system and load on every side form can't be grasped.The isolated island phenomenon can have a strong impact on the safety of network system and normally move.Severest consequences are the personal safety that possibly jeopardize the line maintenance personnel." isolated island " detects and divides passive type detection method and active detection method.The island effect detection was carried out in the variation of inverter output end voltage, frequency, phase place or harmonic wave when the passive type method was utilized grid cut-off.But when inverter power output and partial load power-balance, then the passive type detection method will lose the island effect detectability, have bigger non-surveyed area (Non-Detection Zone is called for short NDZ).The anti-isolated island scheme of the passive type of combining inverter adopts the ripe automatic network disconnecting device of company, improves the fail safe of being incorporated into the power networks.The active alone island detection method is through control inverter, makes its power output, frequency or phase place have certain disturbance.During the electrical network operate as normal, because the balanced action of electrical network detects less than these disturbances.In case electrical network breaks down, allowed band will accumulated and exceed to the disturbance of inverter output fast, thereby trigger the island effect testing circuit.At present the anti-isolated island strategy of combining inverter all adopts passive type to detect to add a kind of active detection scheme that combines." isolated island " detects with passive detection method is main, and the active detecting method is auxilliary.Be passive detection adopted/under voltage and height/low frequency detection method are when the voltage magnitude of point of common coupling and frequency overrun, the automatic off-grid of inverter.(Active Frequency Drift AFD) is present a kind of common active disturbance detecting method and active detecting adopts the frequency offset detection method.Adopt active frequency displacement scheme to make its combining inverter output frequency electric current of distortion slightly,, finally cause the boundary value of output voltage and electric current overfrequency protection, thereby reach the purpose of anti-island effect to form a trend that continuously changes frequency.
In order further to explain core technology scheme of the present invention; Be two-way DC/DC conversion module, two-way DC/DC conversion module is as shown in Figure 2 when charge and discharge device carries out constant current charge, discharge to storage battery, and the charging voltage of storage battery is that the output dc voltage Uo of charge and discharge device changes; And the output dc voltage Ud of SVPWM rectification adverser 2 be fix (the SVPWM rectification adverser is a booster converter; Its output voltage U d can only can not reduce toward raising on the 1.5e2 basis, and controlling its output voltage usually is a constant voltage); So must increase the DC/DC translation circuit, with the direct voltage Uo of fixing Ud furnishing expectation.Reversible battery charge and discharge device can adopt unified DC power supply (being the direct voltage of SVPWM rectification adverser output), and the two-way DC/DC converter of heel is realized the reversible of storage battery discharged and recharged, and its concrete principle is explained as follows:
1) buck circuit
Referring to Fig. 5; Buck circuit is realized the function to charge in batteries; It is as shown in Figure 5 to constitute its schematic diagram of buck circuit (Buck Chopper) by V7 charging IGBT switch, VD8 fly-wheel diode and reactor L2; Be that its charging process is: when V7 opened, Ud charged to storage battery E through reactor L2, L2 place's energy storage this moment attitude; L2 emitted energy through VD8 and continues the charging to storage battery E when V7 turn-offed, and current direction is with reference to the direction of arrow among the figure 5, so L2 also is smoothing reactor, and it is not interrupted that its inductance value parameter value should satisfy charging current;
2) boost chopper
Referring to Fig. 6; Boost chopper is realized the function by battery discharging; It is as shown in Figure 6 to constitute its schematic diagram of boost chopper (Boost Chopper) by V8 charging IGBT switch, VD7 fly-wheel diode and reactor L2; Be that its discharge process is: when V8 opened, storage battery E discharged through reactor L2, L2 place's energy storage this moment attitude; L2 emitted energy and storage battery through VD7 and boosts to the capacitor C energy storage of Ud together when V8 turn-offed, and storage battery E continues to discharge, and current direction is with reference to the direction of arrow among the figure 6.Same L2 also is a smoothing reactor, and it is not interrupted that its inductance value parameter value should satisfy discharging current.
The present invention need carry out the switching that discharges and recharges of reversible charge/discharge unit through the driving of DSP recording controller:
1) reversible charge/discharge unit switches to discharge condition by charged state
Reversible DC/DC switches to discharge condition by charged state, and the reversible bridge of three-phase seamlessly switches to inverter mode by rectification under the phase locked condition of electric voltage frequency, and two closed loop control modes are switched to exchange by DC voltage-stabilizing control follows the tracks of voltage stabilizing;
2) reversible charge/discharge unit switches to charged state by discharge condition
Reversible DC/DC switches to charged state by discharge condition, and the reversible bridge of three-phase seamlessly switches to rectification state by inversion under the phase locked condition of electric voltage frequency, and two closed loop control modes switch to DC voltage-stabilizing by the alternating voltage tracking Control.
Claims (7)
1. reversible charge and discharge device of big capacity; It is characterized in that: this device comprises that reversible electric power storage charge/discharge unit, data show control unit, insulation detecting unit, batteries; Storage battery detecting unit and host computer; Said reversible electric power storage charge/discharge unit comprises transformer (1), the reversible three phase rectifier inverter bridge of SVPWM (2), DSP recording controller and the two-way DC/DC conversion module of changing as charge and discharge mode (3) successively; Said reversible electric power storage charge/discharge unit picks out from the high-pressure system bus; The output of reversible electric power storage charge/discharge unit connects batteries; Data show the control unit and are connected with reversible electric power storage charge/discharge unit, insulation detecting unit and storage battery detecting unit data respectively, and the storage battery detecting unit is connected with the batteries data, and the insulation detecting unit connects the output to reversible electric power storage charge/discharge unit.
2. according to the reversible charge and discharge device of the said a kind of big capacity of claim 1; It is characterized in that: this device also is provided with time reversible electric power storage charge/discharge unit, inferior batteries and inferior storage battery detecting unit; Said time reversible electric power storage charge/discharge unit, inferior batteries and inferior storage battery detecting unit are identical with reversible electric power storage charge/discharge unit, batteries and storage battery detecting unit structure; Said reversible electric power storage charge/discharge unit connects earlier to internal bus, passes through K switch again
4(4) connect to batteries, said time reversible electric power storage charge/discharge unit picks out from high voltage bus, and the output of inferior reversible electric power storage charge/discharge unit connects earlier to internal bus, passes through K switch again
6(5) connect to inferior batteries, the internal bus section between reversible electric power storage charge/discharge unit and time reversible electric power storage charge/discharge unit is provided with K switch
5(6), said time the storage battery detecting unit is connected with time batteries data, and said data show the control unit and are connected with time storage battery detecting unit data with inferior reversible electric power storage charge/discharge unit simultaneously with the same manner with the insulation detecting unit.
3. according to the reversible charge and discharge device of the said a kind of big capacity of claim 1, it is characterized in that: said two-way DC/DC conversion module mainly comprises charging IGBT (7), discharge IGBT (8), inductance L
2(9) and voltage detecting branch road (10); The positive output end serial connection charge IGBT (7) of the reversible three phase rectifier inverter bridge of said SVPWM (2); The output of the reversible three phase rectifier inverter bridge of SVPWM (2) is parallel discharge IGBT (8) again; Its output shunt voltage detection branch (10) more then, the terminal series inductance L of the positive output of two-way DC/DC conversion module (3)
2(9) to batteries, the terminal series current transducer of the negative output of two-way DC/DC conversion module (3) (11) is to batteries.
4. according to the reversible charge and discharge device of the said a kind of big capacity of claim 3, it is characterized in that: the reversible three phase rectifier inverter bridge of said SVPWM (2) is by 6 IGBT (12; 13; 14; 15; 16; 17) compose in parallel in twos, the three-phase output end of said transformer (1) passes through inductance L respectively
1(18) node between two IGBT of access; The output of the reversible three phase rectifier inverter bridge of said SVPWM (2) is a parallel connection large bulk capacitance C (19) earlier; Parallelly connected again time voltage detecting branch road (20); Said DSP recording controller detects the signal of transformer (1) output, voltage detecting branch road (10), inferior voltage detecting branch road (20) and current sensor (11) respectively, and the reversible three phase rectifier inverter bridge of SVPWM (2), charging IGBT (7) and discharge IGBT (8) action are controlled in the control of DSP recording controller respectively.
5. according to the reversible charge and discharge device of the said a kind of big capacity of claim 1; It is characterized in that: said DSP recording controller shows the control unit with host computer and data respectively through the CAN bus and links to each other, and data show the control unit and are connected with insulation detecting unit data with the storage battery detecting unit.
6. according to the reversible charge and discharge device of the said a kind of big capacity of claim 4, it is characterized in that: said voltage detecting branch road (10) and time voltage detecting branch road (20) all are to be in series by a resistance (21) and a voltage sensor (22).
7. according to claim 1 or the reversible charge and discharge device of 2 said a kind of big capacity; It is characterized in that: said data show the control unit and adopt built-in touch monitoring panel computer; Said insulation detecting unit adopts 500V class of insulation alternating current-direct current on-line insulation monitoring alarm, and said storage battery detecting unit adopts explosion-proof intrinsic safety level distributed storage battery on-line measuring device.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368136A (en) * | 2013-07-15 | 2013-10-23 | 国家电网公司 | Method and device for processing power grid power loss |
| CN103475078A (en) * | 2013-10-09 | 2013-12-25 | 厦门绿洋电气有限公司 | Charging device for high-power power battery pack |
| CN103683982A (en) * | 2014-01-03 | 2014-03-26 | 哈尔滨工业大学 | Wide-range alternating voltage input Buck structure voltage-stabilized source |
| CN103887864A (en) * | 2014-03-18 | 2014-06-25 | 沈阳隆基电磁科技股份有限公司 | Charger special for storage battery matched with lifting electromagnet |
| CN105743085A (en) * | 2014-12-12 | 2016-07-06 | 通用电气公司 | System and method for supplying power for at least one load |
| CN106329664A (en) * | 2016-10-20 | 2017-01-11 | 北京正合盛技术有限公司 | Charge-discharge device jointly used by multiple storage battery |
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| CN110618324A (en) * | 2019-08-29 | 2019-12-27 | 幸宗国 | High-power battery simulator |
| CN112467311A (en) * | 2019-09-09 | 2021-03-09 | 大众汽车股份公司 | Traction battery and electrically driven motor vehicle |
| CN113162185A (en) * | 2021-04-30 | 2021-07-23 | 中国人民解放军海军潜艇学院 | Bidirectional charge and discharge system of MW-level storage battery pack |
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| CN115085209A (en) * | 2021-03-12 | 2022-09-20 | 张健 | Power grid harmonic energy taking type capacitor reactive power compensation device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006197676A (en) * | 2005-01-11 | 2006-07-27 | Sony Corp | Power supply |
| CN101145697A (en) * | 2007-09-21 | 2008-03-19 | 北京交通大学 | Accumulator multi-unit synchronous charging/discharging device and its method |
| CN101162389A (en) * | 2007-08-07 | 2008-04-16 | 广西工学院 | Universal small-sized programmable controller and control method thereof |
| CN101593992A (en) * | 2009-04-01 | 2009-12-02 | 贵州省机电研究设计院 | Multi-unit parallel heavy-current storage battery charge-discharge control system |
| CN201503890U (en) * | 2009-09-18 | 2010-06-09 | 重庆希诺达通信有限公司 | Management system for high-capacity rechargeable battery |
| CN101807799A (en) * | 2010-04-27 | 2010-08-18 | 天津大学 | Super capacitor energy storage type power quality compensator |
| CN201966658U (en) * | 2011-03-09 | 2011-09-07 | 珠海朗尔电气有限公司 | Intelligent storage battery grid-connecting and discharging system |
| CN102263428A (en) * | 2011-06-22 | 2011-11-30 | 武汉理工大学 | Distributed battery management system (BMS) based on three-layer CAN (controller area network) network and self-powered characteristic |
| CN202651861U (en) * | 2012-07-17 | 2013-01-02 | 浙江永宏电器有限公司 | High capacity reversible charging and discharging device |
-
2012
- 2012-07-17 CN CN201210249173.8A patent/CN102751776B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006197676A (en) * | 2005-01-11 | 2006-07-27 | Sony Corp | Power supply |
| CN101162389A (en) * | 2007-08-07 | 2008-04-16 | 广西工学院 | Universal small-sized programmable controller and control method thereof |
| CN101145697A (en) * | 2007-09-21 | 2008-03-19 | 北京交通大学 | Accumulator multi-unit synchronous charging/discharging device and its method |
| CN101593992A (en) * | 2009-04-01 | 2009-12-02 | 贵州省机电研究设计院 | Multi-unit parallel heavy-current storage battery charge-discharge control system |
| CN201503890U (en) * | 2009-09-18 | 2010-06-09 | 重庆希诺达通信有限公司 | Management system for high-capacity rechargeable battery |
| CN101807799A (en) * | 2010-04-27 | 2010-08-18 | 天津大学 | Super capacitor energy storage type power quality compensator |
| CN201966658U (en) * | 2011-03-09 | 2011-09-07 | 珠海朗尔电气有限公司 | Intelligent storage battery grid-connecting and discharging system |
| CN102263428A (en) * | 2011-06-22 | 2011-11-30 | 武汉理工大学 | Distributed battery management system (BMS) based on three-layer CAN (controller area network) network and self-powered characteristic |
| CN202651861U (en) * | 2012-07-17 | 2013-01-02 | 浙江永宏电器有限公司 | High capacity reversible charging and discharging device |
Non-Patent Citations (1)
| Title |
|---|
| 邓木生: "电力机车用蓄电池充放电装置SVPWM技术的研究", 《电源技术》, 31 August 2011 (2011-08-31) * |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368136A (en) * | 2013-07-15 | 2013-10-23 | 国家电网公司 | Method and device for processing power grid power loss |
| CN103475078A (en) * | 2013-10-09 | 2013-12-25 | 厦门绿洋电气有限公司 | Charging device for high-power power battery pack |
| CN103475078B (en) * | 2013-10-09 | 2016-08-17 | 厦门绿洋电气有限公司 | A kind of charging device of high-power power battery group |
| CN103683982A (en) * | 2014-01-03 | 2014-03-26 | 哈尔滨工业大学 | Wide-range alternating voltage input Buck structure voltage-stabilized source |
| CN103683982B (en) * | 2014-01-03 | 2015-11-04 | 哈尔滨工业大学 | A kind of Buck structure stabilized voltage power supply of wide range AC voltage input |
| CN103887864A (en) * | 2014-03-18 | 2014-06-25 | 沈阳隆基电磁科技股份有限公司 | Charger special for storage battery matched with lifting electromagnet |
| CN103887864B (en) * | 2014-03-18 | 2016-09-07 | 沈阳隆基电磁科技股份有限公司 | A kind of lifting electromagnet Accessory Battery special charging machine |
| US10505468B2 (en) | 2014-12-12 | 2019-12-10 | General Electric Company | System and method for supplying power to at least one load |
| CN105743085A (en) * | 2014-12-12 | 2016-07-06 | 通用电气公司 | System and method for supplying power for at least one load |
| JP2017539196A (en) * | 2014-12-12 | 2017-12-28 | ゼネラル・エレクトリック・カンパニイ | Controllable three-phase dump load and storage combination for power balance |
| CN105743085B (en) * | 2014-12-12 | 2019-11-26 | 通用电气公司 | To the system and method for at least one load supplying |
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| CN109103975B (en) * | 2018-09-20 | 2024-03-26 | 江苏为恒智能科技有限公司 | Battery bidirectional charging and discharging equipment with insulation detection function |
| CN110618324A (en) * | 2019-08-29 | 2019-12-27 | 幸宗国 | High-power battery simulator |
| CN112467311A (en) * | 2019-09-09 | 2021-03-09 | 大众汽车股份公司 | Traction battery and electrically driven motor vehicle |
| CN115085209A (en) * | 2021-03-12 | 2022-09-20 | 张健 | Power grid harmonic energy taking type capacitor reactive power compensation device |
| CN115085209B (en) * | 2021-03-12 | 2024-02-06 | 浙江线泰电缆科技有限责任公司 | Power grid harmonic energy-taking capacitor reactive compensation device |
| CN113162185A (en) * | 2021-04-30 | 2021-07-23 | 中国人民解放军海军潜艇学院 | Bidirectional charge and discharge system of MW-level storage battery pack |
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| CN114336857B (en) * | 2021-12-30 | 2024-05-03 | 深圳市沃特沃德信息有限公司 | Conversion circuit for series charging and parallel power supply |
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