CN105305591B - A kind of accessory power supply electric power system - Google Patents

A kind of accessory power supply electric power system Download PDF

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Publication number
CN105305591B
CN105305591B CN201410272940.6A CN201410272940A CN105305591B CN 105305591 B CN105305591 B CN 105305591B CN 201410272940 A CN201410272940 A CN 201410272940A CN 105305591 B CN105305591 B CN 105305591B
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input
igbt
power supply
output
diode
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CN105305591A (en
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靳广超
马志军
陈坤鹏
魏卓
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Vertiv Tech Co Ltd
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Emerson Network Power Co Ltd
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Abstract

The present invention relates to a kind of accessory power supply electric power system, including the first alternating current input power supplying, second alternating current input power supplying, HVDC inputs power supply and output device, first alternating current input power supplying is connected to the output device through the first exchange switching device, second alternating current input power supplying is connected to the output device through the second exchange switching device, the HVDC input power supply is connected to the output device through IGBT switching devices, wherein described accessory power supply electric power system also includes priority control apparatus, priority control apparatus electrical connection the first exchange switching device, described second exchanges switching device and the IGBT switching devices to control first alternating current input power supplying, the priority of second alternating current input power supplying and HVDC input power supply.Implement the present invention, by using IGBT switching devices, free switching priority in three road power supplies can be realized with simple structure, cheap cost.

Description

A kind of accessory power supply electric power system
Technical field
The present invention relates to photovoltaic DC-to-AC converter field, is powered more specifically to a kind of accessory power supply of photovoltaic DC-to-AC converter System.
Background technology
Accessory power supply is one of important component of photovoltaic generating system, the direct decision systems of its power supply reliability it is steady It is qualitative.In order to improve the reliability of accessory power supply, generally use PV batteries input DC power (1000Vdc), inverter output AC power (270Vac~315Vac), the road power supply of mains lighting supply (220Vac) three are supplied by way of diodes in parallel Electricity.So, when arbitrarily power supply is because of certain reason power down all the way in three road power supplies, can rapidly be switched in addition Power input all the way, ensure that auxiliary source power supply occurs without power down or the fluctuation of output voltage.
Because being all generally the input voltage highest of PV battery input DC powers, pass through diodes in parallel Obtain limit priority naturally afterwards.Because the input voltage of PV battery input DC powers is typically up to 1000V, existing relay Either device or contactor expense are too high, or switching can not be realized.
The content of the invention
The technical problem to be solved in the present invention is, consolidates for the power supply priority of the accessory power supply of prior art It is fixed, it can not carry out freely and at low cost the defects of priority switching, there is provided one kind is simple in construction, cost is cheap and can be three The accessory power supply electric power system of priority free switching in the power supply of road.
The technical solution adopted for the present invention to solve the technical problems is:A kind of accessory power supply electric power system is constructed, including First alternating current input power supplying, the second alternating current input power supplying, HVDC input power supply and output device, the first exchange input Power supply is connected to the output device through the first exchange switching device, and second alternating current input power supplying is through the second exchange switching dress To put and be connected to the output device, the HVDC input power supply is connected to the output device through IGBT switching devices, its Described in accessory power supply electric power system also include priority control apparatus, the priority control apparatus electrical connection described first is handed over Stream switching device, it is described second exchange switching device and the IGBT switching devices with control first alternating current input power supplying, The priority of second alternating current input power supplying and HVDC input power supply.
In accessory power supply electric power system of the present invention, the IGBT switching devices are including the first IGBT, first just Pole diode and the first negative pole diode, the first IGBT drive signals of grid reception of the first IGBT, drain electrode are connected to institute State positive bus-bar, the anode of source electrode connection the first positive pole diode of HVDC input power supply, the pole of the first positive pole two The negative electrode of pipe connects the first input end of the output device, and the anode of the first negative pole diode connects the output device Output negative pole, negative electrode connect the negative busbar of HVDC input power supply.
In accessory power supply electric power system of the present invention, the IGBT switching devices also include the second positive pole diode With the second negative pole diode, the anode of the second positive pole diode connects the negative electrode of the first positive pole diode, and described the The negative electrode of two positive pole diodes connects the first input end of the output device, the negative electrode connection institute of the second negative pole diode The anode of the first negative pole diode is stated, the anode of the second negative pole diode connects the output negative pole of the output device.
In accessory power supply electric power system of the present invention, the output device includes Voltage stabilizing module and IGBT module, Wherein described Voltage stabilizing module connects the first exchange switching device and exchanges switching device, the IGBT moulds with described second respectively Block includes the 2nd IGBT and the 3rd IGBT, and the grid of the 2nd IGBT receives the 2nd IGBT drive signals, described in source electrode connection The output cathode of output device, drain electrode connect the first input end of the output device, and the grid of the 3rd IGBT receives the The output that three IGBT drive signals, source electrode connect the second input of the output device, the drain electrode connection output device is born Pole.
In accessory power supply electric power system of the present invention, the accessory power supply electric power system also includes being used to detect institute State the first alternating voltage detection means of the first AC-input voltage detection signal of the first alternating current input power supplying, for detecting The DC voltage detecting device of the DC input voitage detection signal of HVDC input power supply is stated, and for detecting host computer control The PC control detection means of signal processed, wherein the priority control apparatus is detected based on first AC-input voltage Signal, the DC input voitage detection signal, the PC control signal and priority predetermined set control described first The priority of alternating current input power supplying, second alternating current input power supplying and HVDC input power supply.
In accessory power supply electric power system of the present invention, the priority control apparatus includes handing over based on described first The first priority control module of input voltage measurement signal control the second exchange switching device is flowed, is handed over based on described first Flow input voltage measurement signal and the DC input voitage detection signal controls the second priority of the IGBT switching devices Control module, and the upper control module based on the PC control signal control IGBT module.
In accessory power supply electric power system of the present invention, first priority control module includes the one or two pole Pipe, the second diode, the first triode and the second triode, wherein the negative electrode connection of first diode first exchange Voltage check device, anode are connected to the base stage of first triode, the colelctor electrode connection power supply electricity of first triode Source and the negative electrode of the second diode, the base stage of anode connection second triode of second diode, the described 1st The grounded emitter of pole pipe, grounded emitter, colelctor electrode connection the second exchange switching device of second triode.
In accessory power supply electric power system of the present invention, second priority control module includes the three or two pole Pipe, the 4th diode, the 5th diode and the 3rd triode, the negative electrode of the 3rd diode connect the DC voltage detection Device, anode connect the base stage of the 3rd triode, the grounded emitter of the 3rd triode, colelctor electrode connection power supply electricity Source and the negative electrode of the 4th diode, the anode of the 4th diode connect the IGBT switching devices, the 5th diode Negative electrode connect the first alternating voltage detection means, anode connects the IGBT switching devices.
In accessory power supply electric power system of the present invention, the upper control module includes the 4th triode, the 6th Diode, the 7th diode and the 8th diode, negative electrode connection control power supply, the anode connection power supply electricity of the 6th diode Source, the negative electrode of the 7th diode receive the PC control signal, the base stage of anode connection the 4th triode, institute State grounded emitter, the negative electrode of colelctor electrode connection the 8th diode of the 4th triode, the anode of the 8th diode Connect the power supply and the IGBT module.
In accessory power supply electric power system of the present invention, the accessory power supply electric power system also includes being used to detect institute State the first alternating voltage detection means of the first AC-input voltage detection signal of the first alternating current input power supplying, for detecting The DC voltage detecting device of the DC input voitage detection signal of HVDC input power supply is stated, and for detecting described second Second alternating voltage detection means of the second AC-input voltage detection signal of alternating current input power supplying, wherein the priority control Device processed is based on the first AC-input voltage detection signal, the DC input voitage detection signal, the second alternating voltage Detection signal and priority predetermined set control the first alternating current input power supplying, second alternating current input power supplying and the height Press the priority of direct-current input power supplying.
In accessory power supply electric power system of the present invention, the priority control apparatus includes handing over based on described first The first priority control module of input voltage measurement signal control the second exchange switching device is flowed, is handed over based on described first Flow described in input voltage measurement signal, the DC input voitage detection signal and the second alternating voltage detection signal control Second priority control module of IGBT switching devices, and the IGBT switchings based on second priority control module output Device control signal controls the IGBT control modules of the IGBT module.
In accessory power supply electric power system of the present invention, first priority control module includes the first triode With the second triode, the base stage of first triode connects the first alternating voltage detection means, grounded emitter, current collection Pole connects the base stage of power supply and second triode, the grounded emitter of second triode, colelctor electrode connection institute State the second exchange switching device.
In accessory power supply electric power system of the present invention, second priority control module include the first NOT gate, Second NOT gate, the 3rd NOT gate, first connect with door, second with door and the 3rd and door, the first AC-input voltage detection signal Be connected to described first with the first input end of door and described second with the first input end of door, the DC input voitage detection letter Number be connected to the second input of described first and door through first NOT gate, described first with the output end of door through described second NOT gate is connected to the second input of described second and door, and described second is connected to the of the described 3rd and door the with the output end of door One input, the second alternating voltage detection signal are connected to the described 3rd the second input with door through the 3rd NOT gate End, the described 3rd exports the IGBT switching devices control signal with the output end of door.
In accessory power supply electric power system of the present invention, the IGBT control modules include the 4th NOT gate and the three or three Pole pipe, the input of the 4th NOT gate receive the IGBT switching devices control signal, output end connection the three or three pole The base stage of pipe, grounded emitter, colelctor electrode connection power supply and the IGBT module of the 3rd triode.
Implement the accessory power supply electric power system of the present invention, can be with simple structure, low by using IGBT switching devices Honest and clean cost realizes free switching priority in three road power supplies.Further, the accessory power supply power supply of the present invention is implemented System, can be according to the control source situation of reality, in three road power supplies by detecting the input voltage of three road power supplies Middle free switching priority so as to ensure power supply according to priority order power and will not occur load power down.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the theory diagram of the first embodiment of the accessory power supply electric power system of the present invention;
Fig. 2 is the theory diagram of the second embodiment of the accessory power supply electric power system of the present invention;
Fig. 3 is the theory diagram of the 3rd embodiment of the accessory power supply electric power system of the present invention;
Fig. 4 is the circuit theory diagrams of the fourth embodiment of the accessory power supply electric power system of the present invention;
Fig. 5 is that the circuit of the first priority control module of the second embodiment of the accessory power supply electric power system of the present invention is former Reason figure;
Fig. 6 is that the circuit of the second priority control module of the second embodiment of the accessory power supply electric power system of the present invention is former Reason figure;
Fig. 7 is the circuit theory diagrams of the upper control module of the second embodiment of the accessory power supply electric power system of the present invention;
Fig. 8 is that the circuit of the first priority control module of the 3rd embodiment of the accessory power supply electric power system of the present invention is former Reason figure;
Fig. 9 is that the circuit of the second priority control module of the 3rd embodiment of the accessory power supply electric power system of the present invention is former Reason figure;
Figure 10 is the circuit theory diagrams of the IGBT switching devices of the 3rd embodiment of the accessory power supply electric power system of the present invention.
Embodiment
Fig. 1 is the theory diagram of the first embodiment of the accessory power supply electric power system of the present invention.It is as shown in figure 1, of the invention Accessory power supply electric power system include the first alternating current input power supplying 110, the second alternating current input power supplying 210, HVDC input electricity Source 310, first exchanges switching device 120, second and exchanges switching device 220, IGBT switching devices 320, priority control apparatus 400 and output device 500.First alternating current input power supplying 110 is connected to described defeated through the described first exchange switching device 120 Going out device 500, second alternating current input power supplying 210 is connected to the output device 500 through the second exchange switching device 220, The HVDC input power supply 310 is connected to the output device 500 through IGBT switching devices 320.The two priority classes Device 400 electrically connects the first exchange switching device 120, the second exchange switching device 220 and IGBT switching dresses 320 are put to control first alternating current input power supplying 110, second alternating current input power supplying 210 and the HVDC to input The priority of power supply 310.
In the present invention, first alternating current input power supplying 110 be 220V mains lighting supply, the second alternating current input power supplying 210 be the 270-315V of inverter output input ac power, the battery that the HVDC input power supply 310 is 1000V Input DC power.The first exchange switching device 120 exchanges switching device 220 with described second can be relay, connect Tentaculum or other exchange switching devices.
The IGBT switching devices 320 include at least one IGBT, and the grid of the IGBT receives the first IGBT driving letters Number, drain electrode is connected to the positive bus-bar of HVDC input power supply 310, source electrode connects the first defeated of the output device 500 Enter end.In a preferred embodiment of the invention, the IGBT switching devices 320 include the first IGBT, the pole of the first positive pole two Pipe and the first negative pole diode.The grid of first IGBT receives the first IGBT drive signals, drain electrode is connected to the high pressure Positive bus-bar, the source electrode of direct-current input power supplying 310 connect the anode of the first positive pole diode.The first positive pole diode Negative electrode connects the first input end of the output device 500, and the anode of the first negative pole diode connects the output device 500 the second input, negative electrode connect the negative busbar of the HVDC input power supply 310.
The priority control apparatus 400 can be logic control circuit or module, wherein built-in first exchange The priority of input power 110, second alternating current input power supplying 210 and HVDC input power supply 310.It is described preferential Level control device based on built-in priority, control the first exchange switching device 120, second exchange switching device 220, The opening and closing of IGBT switching devices 320, so as to control first alternating current input power supplying 110, the second exchange input The priority of power supply 210 and HVDC input power supply 310.
In embodiment, first alternating current input power supplying 110, the second alternating current input power supplying 210, HVDC input electricity Source 310, first exchanges the exchange switching device 220 of switching device 120, second and the output device 500 can be according to this area In known input power, exchange switching device and output circuit constructed.
Implement the accessory power supply electric power system of the present invention, can be with simple structure, low by using IGBT switching devices Honest and clean cost realizes free switching priority in three road power supplies.
Fig. 2 is the theory diagram of the second embodiment of the accessory power supply electric power system of the present invention.It is as shown in Fig. 2 of the invention Accessory power supply electric power system include the first alternating current input power supplying 110, the second alternating current input power supplying 210, HVDC input electricity Source 310, first exchanges switching device 120, second and exchanges switching device 220, IGBT switching devices 320, the inspection of the first alternating voltage Survey device 800, DC voltage detecting device 600 and PC control detection means 700, priority control apparatus 400 and output Device 500.
First alternating current input power supplying 110 is connected to the output device through the described first exchange switching device 120 500, second alternating current input power supplying 210 is connected to the output device 500, the height through the second exchange switching device 220 Pressure direct-current input power supplying 310 is connected to the output device 500 through IGBT switching devices 320.The first alternating voltage detection Device 800 is used for the first AC-input voltage detection signal for detecting first alternating current input power supplying 110.The DC voltage Detection means 600 is used for the DC input voitage detection signal for detecting the HVDC input power supply 310.The host computer control Detection means 700 processed is used to detect the PC control signal from upper computer control system.
In the present embodiment, the output device 500 includes Voltage stabilizing module 510 and IGBT module 520.The Voltage stabilizing module 510 connect the first exchange switching device 120 respectively exchanges switching device 220 with described second.The IGBT520 is connected to Between the Voltage stabilizing module 510 and the voltage output end of accessory power supply, so as to be controlled to the voltage output of accessory power supply.
The priority control apparatus 400 and the first alternating voltage detection means 800, DC voltage detecting device 600 and PC control detection means 700 communicate to connect to receive the first AC-input voltage detection signal, the direct current Input voltage measurement signal, the PC control signal.The priority control apparatus 400 includes the first two priority classes mould Block 410, the second priority control module 420 and upper control module 430.First priority control module 410 is based on institute State the first AC-input voltage detection signal control the second exchange switching device 220.Second priority control module 420 control the IGBT switchings based on the first AC-input voltage detection signal and the DC input voitage detection signal Device 320.The upper control module 430 is based on the PC control signal and controls the IGBT module 520.
In the present invention, the first alternating voltage detection means 800, DC voltage detecting device 600 and the host computer control Detection means 700 processed can use any alternating voltage detection means well known in the prior art, DC voltage detecting device with And PC control detection means is realized.And those skilled in the art know a variety of such detection means.In the present invention Preferred embodiment in, first priority control module 410, the second priority control module 420 and upper control module 430 construction may refer to Fig. 5-7 description.
Implement the accessory power supply electric power system of the present invention, can be with simple structure, low by using IGBT switching devices Honest and clean cost realizes free switching priority in three road power supplies.Further, the accessory power supply power supply of the present invention is implemented System, by detecting the first AC-input voltage detection signal, the DC input voitage detection signal and the host computer control Signal processed, can be according to the control source situation of reality, and free switching priority is so as to ensureing power supply in three road power supplies Powered according to priority order and will not occur to load power down.Yet further, the accessory power supply electric power system of the present invention is implemented, Directly the output voltage of accessory power supply can be controlled by IGBT module.
Fig. 3 is the theory diagram of the 3rd embodiment of the accessory power supply electric power system of the present invention.It is as shown in Fig. 2 of the invention Accessory power supply electric power system include the first alternating current input power supplying 110, the second alternating current input power supplying 210, HVDC input electricity Source 310, first exchanges switching device 120, second and exchanges switching device 220, IGBT switching devices 320, the inspection of the first alternating voltage Survey device 800, the alternating voltage detection means 900 of DC voltage detecting device 600 and second, priority control apparatus 400 and defeated Go out device 500.
First alternating current input power supplying 110 is connected to the output device through the described first exchange switching device 120 500, second alternating current input power supplying 210 is connected to the output device 500, the height through the second exchange switching device 220 Pressure direct-current input power supplying 310 is connected to the output device 500 through IGBT switching devices 320.First alternating voltage detection means 800 the first AC-input voltage detection signal for detecting first alternating current input power supplying 110.DC voltage detecting device 600 are used to detect the DC input voitage detection signal that the HVDC inputs power supply 310.Second alternating voltage detection means 900 the second AC-input voltage detection signal for detecting second alternating current input power supplying 210.
In the present embodiment, the output device 500 includes Voltage stabilizing module 510 and IGBT module 520.The Voltage stabilizing module 510 connect the first exchange switching device 120 respectively exchanges switching device 220 with described second.The IGBT520 is connected to Between the Voltage stabilizing module 510 and the voltage output end of accessory power supply, so as to be controlled to the voltage output of accessory power supply.
The priority control apparatus 400 and the first alternating voltage detection means 800, DC voltage detecting device 600 and second alternating voltage detection means 900 communicate to connect to receive the first AC-input voltage detection signal, described straight Flow input voltage measurement signal, the second alternating voltage detection signal.The priority control apparatus 400 includes the first priority control Molding block 440, the second priority control module 450 and IGBT control modules 460.The base of first priority control module 440 In the first AC-input voltage detection signal control the second exchange switching device 220.Second two priority classes Module 450 is based on the first AC-input voltage detection signal, the DC input voitage detection signal and described second is handed over Flow voltage detection signal and control the IGBT switching devices 320.The IGBT control modules 460 are based on the second priority control The control signal of IGBT switching devices 320 that molding block 450 exports controls the IGBT module 520.
In the present invention, the first alternating voltage detection means 800, DC voltage detecting device 600 exchange with second Voltage check device 900 can use any alternating voltage detection means well known in the prior art, DC voltage detecting device To realize.And those skilled in the art know a variety of such detection means.In a preferred embodiment of the invention, described The construction of one priority control module 440, the second priority control module 450 and IGBT control modules 460 may refer to figure 8-10 description.
Implement the accessory power supply electric power system of the present invention, can be with simple structure, low by using IGBT switching devices Honest and clean cost realizes free switching priority in three road power supplies.Further, the accessory power supply power supply of the present invention is implemented System, by detecting the first AC-input voltage detection signal, the DC input voitage detection signal exchanges input with second Voltage detection signal, can be according to the control source situation of reality, and free switching priority is so as to protecting in three road power supplies Card power supply is powered according to priority order and will not occur to load power down.Yet further, the accessory power supply for implementing the present invention supplies Electric system, directly the output voltage of accessory power supply can be controlled by IGBT module.
Fig. 4 is the circuit theory diagrams of the fourth embodiment of the accessory power supply electric power system of the present invention.As shown in figure 4, this hair Bright accessory power supply electric power system includes the first alternating current input power supplying, the second alternating current input power supplying, HVDC input power supply, the One exchange switching device, the second exchange switching device, IGBT switching devices, priority control apparatus (not shown) and output dress Put.
As shown in figure 4, the first alternating current input power supplying is connected to through the first ac input end mouth V_220_A1 and V_220_B1 Relay RLY5 with relay RLY9 is in series first exchanges switching device.Relay RLY5 and relay RLY9 is through One rectifier bridge A is connected to the 3rd input c and the 4th input d of output device.Second alternating current input power supplying is through the second exchange Input port V_315_A1 and V_315_B1 are connected to relay RLY6 and relay RLY7 is in series second exchanges switching Device.The 3rd input c and the 4th that relay RLY6 and relay RLY7 is connected to output device through the second rectifier bridge B is defeated Enter to hold d.
As shown in figure 4, HVDC input power supply connects IGBT7, diode through positive bus-bar BUS+ with negative busbar BUS- The IGBT switching devices that D71, D49, D51 and D50 are formed.The grid of the IGBT7 receives IGBT7 drive signals, drain electrode connection The anode of the diode D71, the negative electrode connection diode D49 of diode D71 sun are connected to positive bus-bar BUS+, source electrode Pole.The negative electrode of the diode D49 connects the first input end a of the output device.The negative electrode connection of the diode D61 is negative Bus BUS-.The anode connection diode D50 of diode D61 negative electrode, the anode connection of the diode D50 are described defeated Go out the output negative pole b of device.
As shown in figure 4, the output device includes filtration module, two poles that resistance R16, R21 and electric capacity C13, C22 are formed The IGBT module that the Voltage stabilizing module and IGBT2 and IGBT13 that pipe D72, D48, D63, D62 are formed are formed.The electric capacity C13 and C22 is connected between the 3rd input c of output device and the 4th input d.Described resistance R16, R21 are also connected on output dress Between the 3rd input c put and the 4th input d.The tie point of the electric capacity C13 and C22 and described resistance R16, R21's Tie point is connected with each other.The 3rd input c, sun of the negative electrode through diode D48 of diode D72 anode connection output device Pole, negative electrode are connected to the first input end a of the output device.Diode D62 anode connection IGBT2 source electrode, negative electrode warp Diode D63 anode, the 4th input d of negative electrode connection output device.The grid of the IGBT2 receives IGBT driving letters Number, source electrode connects the second input b of the output device 500, drain electrode connects the output negative pole of the output device 500 AUX-.The grid of the IGBT13 receives IGBT drive signals, source electrode connect the output device 500 output cathode AUX+, Drain electrode connects the first input end a of the output device 500.
Implement the accessory power supply electric power system of the present invention, can be with simple structure, low by using IGBT switching devices Honest and clean cost realizes free switching priority in three road power supplies.Further, the accessory power supply power supply of the present invention is implemented System, directly the output voltage of accessory power supply can be controlled by IGBT module, and can be to the defeated of accessory power supply Go out voltage to be filtered and voltage stabilizing processing.
Fig. 5 is that the circuit of the first priority control module of the second embodiment of the accessory power supply electric power system of the present invention is former Reason figure.As shown in figure 5, first priority control module of the present invention mainly includes voltage-regulator diode D239, the pole of voltage stabilizing two Pipe D241, triode Q49 and triode Q88.The negative electrode of the voltage-regulator diode D239 connects the first alternating voltage detection Device 800, anode are connected to the base stage of the triode Q49 through resistance R217.The colelctor electrode connection power supply of the triode Q49 The negative electrode of power supply and voltage-regulator diode D241, the anode of the voltage-regulator diode D241 is through resistance R538 connecting triodes Q88's Base stage.The grounded emitter of the triode Q49.Grounded emitter, the colelctor electrode connection described second of the triode Q88 is handed over Flow switching device 220.In a preferred embodiment of the invention, first priority control module can also include being connected to three Electric capacity C108 and resistance R219 between pole pipe Q49 base stage and emitter stage, be connected to triode Q88 emitter stage and base stage it Between electric capacity C66 and resistance R514, and plus earth, negative electrode connection it is described second exchange switching device 220 the pole of voltage stabilizing two Pipe D216.
Fig. 6 is that the circuit of the second priority control module of the second embodiment of the accessory power supply electric power system of the present invention is former Reason figure.As shown in fig. 6, second priority control module of the present invention mainly includes voltage-regulator diode D252, diode D224, diode D222 and triode Q62.The negative electrode connection DC voltage detecting device of the voltage-regulator diode D252, Base stage of the anode through the resistance R269 connections triode Q62.The grounded emitter of the triode Q62, colelctor electrode are through resistance The negative electrode of R207 connection power supplies and diode D224, the anode of the diode D224 connect the IGBT switching devices 320, the diode D222 negative electrode connect the first alternating voltage detection means 800, anode connects the IGBT switchings Device 320.In a preferred embodiment of the invention, second priority control module can also include being connected to triode Electric capacity and resistance between Q62 base stage and emitter stage.
Fig. 7 is the circuit theory diagrams of the upper control module of the second embodiment of the accessory power supply electric power system of the present invention. As shown in fig. 7, the upper control module of the present invention mainly includes triode Q54, diode D220, voltage-regulator diode D255 and two Pole pipe D226.Negative electrode connection control power supply 120VDC_Monitor+, the anode connection power supply of the diode D220, institute The negative electrode for stating voltage-regulator diode D255 receives the PC control signal, anode through the resistance R209 connections triode Q54 Base stage, the grounded emitter of the triode Q54, colelctor electrode connect the negative electrode of the diode D226, the diode D226 anode connects the power supply and the IGBT module 520.In a preferred embodiment of the invention, described second is excellent First level control module can also include the electric capacity and resistance being connected between triode Q54 base stage and emitter stage.
Illustrate the operation principle of the present embodiment accessory power supply electric power system with reference to Fig. 2,4-7.According to shown in Fig. 5-7 Priority control apparatus 400.As shown in figure 4, the priority control apparatus 400 includes the first priority control module 440, the Two priority control modules 450 and IGBT control modules 460.In the present embodiment, priority is as follows:First alternating current input power supplying 110>HVDC inputs power supply 310>Second alternating current input power supplying 210.In other embodiments of the invention, can also use Other priority modes.
When detecting that the first alternating current input power supplying 110, HVDC input power supply 310 are available for electricity, at this moment first hand over Flow input voltage measurement signal 220_ok, DC input voitage detection signal PV_ok is low level.Now first shown in Fig. 5 The triode Q49 conductings of priority control module, triode Q88 cut-offs, so as to block the second exchange switching device 220 Control signal (315_rly).Similarly, the diode D222 conductings of the second priority control module shown in Fig. 6, so as to block The control signal (DRIVE_M1) of IGBT switching devices.When the first 110 power down of alternating current input power supplying, at this moment the first exchange input Voltage detection signal 220_ok is high level.The now triode Q49 cut-offs of the first priority control module shown in Fig. 5, three Pole pipe Q88 is turned on, so as to open the control signal (315_rly) of the second exchange switching device 220.Similarly, shown in Fig. 6 The diode D222 cut-offs of second priority control module, and diode D252, D224 and triode D62 conductings, so as to open The control signal (DRIVE_M1) of IGBT switching devices.Now, will be by because the voltage of HVDC input power supply 310 is higher HVDC input power supply 310 is powered.And when the first alternating current input power supplying 110 and HVDC input 310 all power down of power supply, At this moment the first AC-input voltage detection signal 220_ok and DC input voitage detection signal PV_ok is high level.Now Fig. 5 The triode Q49 cut-offs of the first shown priority control module, triode Q88 conductings, cut so as to open second exchange The control signal (315_rly) of changing device 220.Therefore, now powered by the second alternating current input power supplying 210.When upper shown in Fig. 7 When position control module receives PC control signal (shut_down+), triode Q54 conductings, cut-off signals, control are exported The shut-offs of IGBT13 and 2 in the IGBT module of output device 500, so as to disconnect power supply of the accessory power supply to load.
Fig. 8 is that the circuit of the first priority control module of the 3rd embodiment of the accessory power supply electric power system of the present invention is former Reason figure.As shown in figure 8, first priority control module mainly includes triode Q52 and triode Q88.The triode Q52 base stage is through resistance R286 connections the first alternating voltage detection means 800, grounded emitter, colelctor electrode through resistance R377 connection power supplies and the base stage through triode Q88 described in resistance E537, the grounded emitter of the triode Q88, collection Electrode connection the second exchange switching device 220.
Fig. 9 is that the circuit of the second priority control module of the 3rd embodiment of the accessory power supply electric power system of the present invention is former Reason figure.As shown in figure 9, second priority control module mainly includes the first NOT gate, the second NOT gate, the 3rd NOT gate and door 1Y, with door 2Y and with door 3Y, the first AC-input voltage detection signal be connected to it is described with door 1Y first input end and It is described to be connected to described and door 1Y through first NOT gate with door 2Y first input end, the DC input voitage detection signal The second input, it is described to be connected to second input with door 2Y, institute through second NOT gate with door 1Y output end State and be connected to the first input end with door 3Y with door 2Y output end, the second alternating voltage detection signal is through described the Three NOT gates are connected to second input with door 3Y, described to export the IGBT switching devices control with door 3Y output end Signal.
Figure 10 is the circuit theory diagrams of the IGBT switching devices of the 3rd embodiment of the accessory power supply electric power system of the present invention. As shown in Figure 10, the IGBT control modules include NOT gate U45 and triode Q61, NOT gate U45 input from described the Two priority control modules receive the IGBT switching devices control signal, output end through the resistance R275 connections triode Q61 base stage, grounded emitter, colelctor electrode connection power supply and the IGBT module 520 of the triode Q61.
Illustrate the operation principle of the present embodiment accessory power supply electric power system with reference to Fig. 3,4,8-10.According to Fig. 8-10 institute The priority control apparatus 400 shown, priority is as follows:First alternating current input power supplying 110>HVDC inputs power supply 310>Second Alternating current input power supplying 210.When detect the first alternating current input power supplying 110, the second alternating current input power supplying 210 and HVDC input When power supply 310 is available for electricity, at this moment the first AC-input voltage detection signal 220_ok, DC input voitage detection signal PV_ Ok, the second AC-input voltage detection signal 315_ok are low level.Now the first priority control module shown in Fig. 8 Triode Q49 is turned on, triode Q88 cut-offs, so as to block the control signal (315_ of the second exchange switching device 220 rly).Similarly, the second priority control module shown in Fig. 9 to the first AC-input voltage detection signal 220_ok of reception, After DC input voitage detection signal PV_ok, the second AC-input voltage detection signal 315_ok carry out NAND Logic operation, The control signal (DRIVE_M1) of output block IGBT switching devices.When the first 110 power down of alternating current input power supplying, at this moment first AC-input voltage detection signal 220_ok is high level.Second alternating current input power supplying 210 and HVDC input power supply 310 do not have There is power down, therefore DC input voitage detection signal PV_ok, the second AC-input voltage detection signal 315_ok are low level. Now, the triode Q49 cut-offs of the first priority control module, triode Q88 conductings, so as to open the second exchange switching The control signal (315_rly) of device 220.Similarly, first exchange of the second priority control module shown in Fig. 9 to reception is defeated Enter voltage detection signal 220_ok, DC input voitage detection signal PV_ok, the second AC-input voltage detection signal 315_ok After carrying out NAND Logic operation, the control signal (DRIVE_M1) of IGBT switching devices is opened in output.Now, due to high straightening It is higher to flow the voltage of input power 310, power supply 310 will be inputted by HVDC and powered.And when the He of the first alternating current input power supplying 110 HVDC input power supply 310 all power down when, at this moment the first AC-input voltage detection signal 220_ok and DC input voitage Detection signal PV_ok is high level, and the second AC-input voltage detection signal 315_ok is low level.First two priority classes mould The triode Q49 cut-offs of block, triode Q88 conductings, so as to open the control signal of the second exchange switching device 220 (315_rly).Therefore, now powered by the second alternating current input power supplying 210.When the first alternating current input power supplying 110, high-voltage dc transmission Enter the alternating current input power supplying 210 of power supply 310 second all power down when, at this moment the first AC-input voltage detection signal 220ok, second hand over It is high level to flow input voltage measurement signal 315ok and DC input voitage detection signal PV_ok.Now, second shown in Fig. 9 First AC-input voltage detection signal 220_ok, DC input voitage detection signal PV_ of the priority control module to reception After ok, the second AC-input voltage detection signal 315_ok carry out NAND Logic operation, the control of IGBT switching devices is exported Signal (DRIVE_M1) is high level, now the triode Q61 cut-offs of IGBT control modules, so as to control output device 500 The shut-offs of IGBT13 and 2 in IGBT module, so as to disconnect power supply of the accessory power supply to load.
Although the present invention is illustrated by specific embodiment, it will be appreciated by those skilled in the art that, do not departing from In the case of the scope of the invention, various conversion and equivalent substitute can also be carried out to the present invention.Therefore, the present invention is not limited to institute Disclosed specific embodiment, and the whole embodiments fallen within the scope of the appended claims should be included.

Claims (12)

1. a kind of accessory power supply electric power system, including the input of the first alternating current input power supplying, the second alternating current input power supplying, HVDC Power supply and output device, it is characterised in that first alternating current input power supplying is connected to described defeated through the first exchange switching device Go out device, second alternating current input power supplying is connected to the output device, the HVDC through the second exchange switching device Input power is connected to the output device through IGBT switching devices, wherein the accessory power supply electric power system also includes priority Control device, priority control apparatus electrical connection the first exchange switching device, the second exchange switching device and The IGBT switching devices are to control first alternating current input power supplying, second alternating current input power supplying and the HVDC The priority of input power;The output device includes Voltage stabilizing module and IGBT module;
The accessory power supply electric power system also includes being used for the first AC-input voltage for detecting first alternating current input power supplying First alternating voltage detection means of detection signal, the DC input voitage detection for detecting the HVDC input power supply The DC voltage detecting device of signal, and for detecting the PC control detection means of PC control signal, wherein described Priority control apparatus is based on the first AC-input voltage detection signal, the DC input voitage detection signal, described PC control signal and priority predetermined set control first alternating current input power supplying, second alternating current input power supplying and The priority of the HVDC input power supply;
The priority control apparatus includes cutting based on the first AC-input voltage detection signal control second exchange First priority control module of changing device, based on the first AC-input voltage detection signal and the DC input voitage Detection signal controls the second priority control module of the IGBT switching devices, and based on the PC control signal control Make the upper control module of the IGBT module;
First priority control module includes the first diode, the second diode, the first triode and the second triode, its Described in the first diode negative electrode connect the first alternating voltage detection means, anode is connected to first triode Base stage, the colelctor electrode connection power supply of first triode and the negative electrode of the second diode, the sun of second diode Pole connects the base stage of second triode, the grounded emitter of first triode, the emitter stage of second triode Ground connection, colelctor electrode connection the second exchange switching device.
2. accessory power supply electric power system according to claim 1, it is characterised in that the IGBT switching devices include first IGBT, the first positive pole diode and the first negative pole diode, the grid of the first IGBT receive the first IGBT drive signals, leakage Pole is connected to the positive bus-bar of HVDC input power supply, source electrode connects the anode of the first positive pole diode, and described the The negative electrode of one positive pole diode connects the first input end of the output device, the anode connection institute of the first negative pole diode State the output negative pole of output device, negative electrode connects the negative busbar that the HVDC inputs power supply.
3. accessory power supply electric power system according to claim 2, it is characterised in that the IGBT switching devices also include the Two positive pole diodes and the second negative pole diode, the anode of the second positive pole diode connect the first positive pole diode Negative electrode, the negative electrode of the second positive pole diode connect the first input end of the output device, the second negative pole diode Negative electrode connect the anode of the first negative pole diode, the anode of the second negative pole diode connects the output device Output negative pole.
4. accessory power supply electric power system according to claim 3, it is characterised in that the Voltage stabilizing module connects described respectively First exchange switching device exchanges switching device with described second, and the IGBT module includes the 2nd IGBT and the 3rd IGBT, institute The grid for stating the 2nd IGBT receives the 2nd IGBT drive signals, source electrode connects the output cathode of the output device, drain electrode connection The first input end of the output device, the grid of the 3rd IGBT receive the 3rd IGBT drive signals, described in source electrode connection Second input of output device, drain electrode connect the output negative pole of the output device.
5. accessory power supply electric power system according to claim 1, it is characterised in that the second priority control module bag The 3rd diode, the 4th diode, the 5th diode and the 3rd triode are included, the negative electrode connection of the 3rd diode is described straight Flow voltage check device, anode connects the base stage of the 3rd triode, the grounded emitter of the 3rd triode, colelctor electrode The negative electrode of power supply and the 4th diode is connected, the anode of the 4th diode connects the IGBT switching devices, described The negative electrode of 5th diode connects the first alternating voltage detection means, anode connects the IGBT switching devices.
6. accessory power supply electric power system according to claim 5, it is characterised in that the upper control module includes the 4th Triode, the 6th diode, the 7th diode and the 8th diode, negative electrode connection control power supply, the sun of the 6th diode Pole connects power supply, and the negative electrode of the 7th diode receives the PC control signal, anode connection the described 4th 3 The base stage of pole pipe, the grounded emitter of the 4th triode, the negative electrode of colelctor electrode connection the 8th diode, the described 8th The anode of diode connects the power supply and the IGBT module.
7. a kind of accessory power supply electric power system, including the input of the first alternating current input power supplying, the second alternating current input power supplying, HVDC Power supply and output device, it is characterised in that first alternating current input power supplying is connected to described defeated through the first exchange switching device Go out device, second alternating current input power supplying is connected to the output device, the HVDC through the second exchange switching device Input power is connected to the output device through IGBT switching devices, wherein the accessory power supply electric power system also includes priority Control device, priority control apparatus electrical connection the first exchange switching device, the second exchange switching device and The IGBT switching devices are to control first alternating current input power supplying, second alternating current input power supplying and the HVDC The priority of input power;The output device includes Voltage stabilizing module and IGBT module;
The accessory power supply electric power system also includes being used for the first AC-input voltage for detecting first alternating current input power supplying First alternating voltage detection means of detection signal, the DC input voitage detection for detecting the HVDC input power supply The DC voltage detecting device of signal, and the second AC-input voltage for detecting second alternating current input power supplying detect letter Number the second alternating voltage detection means, wherein the priority control apparatus be based on first AC-input voltage detection letter Number, the DC input voitage detection signal, the second alternating voltage detection signal and priority predetermined set control described first The priority of alternating current input power supplying, second alternating current input power supplying and HVDC input power supply;
The priority control apparatus includes cutting based on the first AC-input voltage detection signal control second exchange First priority control module of changing device, based on the first AC-input voltage detection signal, the DC input voitage Detection signal and the second alternating voltage detection signal control the second priority control module of the IGBT switching devices, with And the IGBT switching devices control signal based on second priority control module output controls the IGBT of the IGBT module Control module;
First priority control module includes the first triode and the second triode, the base stage connection of first triode The first alternating voltage detection means, grounded emitter, colelctor electrode connection power supply and second triode base stage, Grounded emitter, colelctor electrode connection the second exchange switching device of second triode.
8. accessory power supply electric power system according to claim 7, it is characterised in that the second priority control module bag Include the first NOT gate, the second NOT gate, the 3rd NOT gate, first with door, second with door and the 3rd and door, first AC-input voltage Detection signal be connected to described first with the first input end of door and described second with the first input end of door, the direct current input Voltage detection signal is connected to the second input of described first and door through first NOT gate, described first with the output end of door It is connected to the second input of described second and door through second NOT gate, described second is connected to described the with the output end of door Three are connected to the described 3rd and door with the first input end of door, the second alternating voltage detection signal through the 3rd NOT gate Second input, the described 3rd exports the IGBT switching devices control signal with the output end of door.
9. accessory power supply electric power system according to claim 8, it is characterised in that the IGBT control modules include the 4th NOT gate and the 3rd triode, the input of the 4th NOT gate receive the IGBT switching devices control signal, output end connection The base stage of 3rd triode, grounded emitter, colelctor electrode connection power supply and the IGBT of the 3rd triode Module.
10. accessory power supply electric power system according to claim 7, it is characterised in that the IGBT switching devices include the One IGBT, the first positive pole diode and the first negative pole diode, the first IGBT drive signals of grid reception of the first IGBT, Drain electrode is connected to the positive bus-bar of the HVDC input power supply, the anode of source electrode connection the first positive pole diode, described The negative electrode of first positive pole diode connects the first input end of the output device, the anode connection of the first negative pole diode Output negative pole, the negative electrode of the output device connect the negative busbar of the HVDC input power supply.
11. accessory power supply electric power system according to claim 10, it is characterised in that the IGBT switching devices also include Second positive pole diode and the second negative pole diode, the anode of the second positive pole diode connect the first positive pole diode Negative electrode, the negative electrode of the second positive pole diode connects the first input end of the output device, the pole of the second negative pole two The negative electrode of pipe connects the anode of the first negative pole diode, and the anode of the second negative pole diode connects the output device Output negative pole.
12. accessory power supply electric power system according to claim 11, it is characterised in that the Voltage stabilizing module connects institute respectively To state the first exchange switching device and exchange switching device with described second, the IGBT module includes the 2nd IGBT and the 3rd IGBT, The grid of 2nd IGBT receives the 2nd IGBT drive signals, source electrode connects the output cathode of the output device, drain electrode connects The first input end of the output device is connect, the grid of the 3rd IGBT receives the 3rd IGBT drive signals, source electrode connection institute State the second input, the output negative pole of the drain electrode connection output device of output device.
CN201410272940.6A 2014-06-18 2014-06-18 A kind of accessory power supply electric power system Active CN105305591B (en)

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CN101771292B (en) * 2008-12-30 2013-10-23 北京谊安医疗系统股份有限公司 Switching circuit based on priorities and multi-path power supply swtiching system containing same
CN101707393A (en) * 2009-11-18 2010-05-12 太仓市同维电子有限公司 Automatic switching circuit of power supply
CN102377247B (en) * 2011-12-06 2013-10-16 苏州易米克电子有限公司 Power supply device with monitoring function
CN102545373A (en) * 2011-12-15 2012-07-04 山东电力集团公司菏泽供电公司 Dual power switching device for intelligent electronic equipment
CN103187788B (en) * 2011-12-27 2016-12-07 力博特公司 UPS module that a kind of row are powered mutually and ups system
CN202651878U (en) * 2012-05-22 2013-01-02 北京航天发射技术研究所 Vehicle-mounted intelligent power supply manager
CN103607037B (en) * 2013-11-01 2015-09-09 恒动能源(深圳)有限公司 A kind of switching device shifter of ups power

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