CN202550982U - High-voltage pulse generator with IGBTs connected in series - Google Patents
High-voltage pulse generator with IGBTs connected in series Download PDFInfo
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- CN202550982U CN202550982U CN2012201010721U CN201220101072U CN202550982U CN 202550982 U CN202550982 U CN 202550982U CN 2012201010721 U CN2012201010721 U CN 2012201010721U CN 201220101072 U CN201220101072 U CN 201220101072U CN 202550982 U CN202550982 U CN 202550982U
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Abstract
The utility model discloses a high-voltage pulse generator with IGBTs (Insulated Gate Bipolar Transistor) connected in series. The high-voltage pulse generator is supplied with voltage by a high-voltage power source and high-voltage pulses can be generated by a multistage IGBT series circuit after energy is stored by an energy storing capacitor. A programmable logic controller (PLC) generates PWM (Programmable Logic Controller) control pulses which, after passing through a PWM amplifier circuit, are inputted to an optical fiber isolation circuit to drive the IGBT series circuit. The working power source of the IGBT series circuit is provided by a secondary circuit of an isolation power source which is connected with the IGBT series circuit. Utility power is converted to be direct current power after passing through a rectifier circuit and a filter circuit; then the direct current power is converted to be high-frequency square wave by a high-frequency power MOSFET(Metal-Oxide -Semiconductor Field Effect Transistor) full-bridge inverter circuit which is driven by a power MOSFET driver circuit; and finally the high-frequency square wave is isolated by a series magnetic ring circuit and then is inputted to the secondary circuit of the isolation power source. When the IGBT series circuit is in fault, a fault signal is inputted to the PLC after passing through a fault output circuit and an optical fiber feedback circuit, and then the PLC immediately interrupts a control signal to enable the IGBT series circuit to be switched off so as to protect the entire system.
Description
Technical field
The utility model relates to a kind of high-voltage pulse generator, especially relates to a kind of IGBT tandem type high-voltage pulse generator.
Background technology
Pulse Power Techniques are a kind of with the form of the energy of storing with electric energy; Short pulse mode with pulse or repetition rate is added to the technology in the load, is widely used in a series of military projects, the energy, material, biological fields such as radar transmitter, high-pressure pulse electric sterilization, the fragmentation of insulating material electric pulse at present.Realize that this technological key is design high pressure, powerful high-voltage pulse generator.Produce high-voltage pulse two approach are roughly arranged: the one, be reverse into action of low-voltage pulse by relatively low direct current electricity, obtain high-voltage pulse through the pulse stepup transformer then; Another kind is by the high-voltage DC power supply power supply, utilizes the energy storage of pulse storage capacitor, through high-voltage switch gear it is become high-voltage pulse then.Because the difficult development of powerful high-voltage pulse stepup transformer costs an arm and a leg, and be difficult to maintenance in case break down, so first method is fit to low-power applications; Second method directly provides voltage by high-voltage DC power supply, and the investigative technique of high-voltage DC power supply is very ripe, and is easy to realize high pressure, high-power, therefore is suitable for the high-power applications occasion.Yet second method need be developed and can bear high pressure, powerful switch.The early stage general switches such as vacuum switch, gas switch, thyratron that adopt, but these switches useful life is short, switching speed is slow, poor controllability, has therefore limited the development of Pulse Power Techniques.
Along with the development of power electronic technology, some novel semiconductor switchs are applied in the Pulse Power Techniques gradually, and insulated gate electrode pair transistor (Insulated Gate Bipolar Transistor--IGBT) is exactly wherein a kind of.The compound full-control type voltage driven type power semiconductor that IGBT is made up of BJT (double pole triode) and MOS (insulating gate type field effect tube), it is simple to have type of drive, and switching speed is fast, voltage, current capacity advantages of higher.But in these voltages were used up to thousands of Pulse Power Techniques to tens of kilovolts, even 6500 the highest V IGBT of electric pressure also can't satisfy at present, and electric pressure was high more, and the IGBT price is also high more, therefore needs IGBT is connected in series.
Yet, because IGBT series component time because of switch motion in switching process is inconsistent, be prone to the voltage distribution inequality, cause the plural serial stage of IGBT very difficult.Multiple solution has been proposed this researcher: can be divided into the dynamic voltage balancing of controlling and be directed against IGBT power terminal voltage balance to the gate driving of IGBT gate drive signal synchronism.The former mainly realizes the closed-loop control to every IGBT drive signal through a supervisory circuit with nanosecond response speed, and control precision is high, and circuit structure is complicated.Therefore, reliable, the practical IGBT plural serial stage method of research has great importance.
Summary of the invention
The purpose of the utility model is to provide a kind of IGBT tandem type high-voltage pulse generator, utilizes this circuit can realize the high-pressure solid-state switch of 64 IGBT series connection, through controlling the on off state of this solid-state switch, can export the high-voltage pulse of 50kV.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
The utility model comprises high voltage source, storage capacitor, PLC, rectification circuit, filter circuit, high frequency power MOSFET full bridge inverter, power MOSFET driving circuit, series connection magnet ring buffer circuit, 16 tunnel independently insulating power supply secondary circuit, 16 tunnel IGBT series circuit of connecting each other, optical fiber buffer circuit, PWM amplifying circuit, 16 tunnel separate fault output circuit, optical fiber feedback circuits.The voltage that high voltage source provides is through exporting high-voltage pulse after through 16 tunnel IGBT series circuits of connecting each other after the storage capacitor energy storage; PLC produces the PWM control impuls, connect PWM amplifying circuit, optical fiber buffer circuit successively after, drive 16 tunnel IGBT series circuits of connecting each other; Civil power becomes direct current behind rectification circuit, filter circuit; After connecing high frequency power MOSFET full bridge inverter, series connection magnet ring circuit, 16 tunnel separate insulating power supply secondary circuits more successively, export 16 tunnel separate 24V direct currents and give 16 tunnel IGBT series circuit power supplies of connecting each other; Power MOSFET driving circuit links to each other with high frequency power MOSFET full bridge inverter, drives 4 power MOSFETs; The fault-signal that 16 tunnel IGBT series circuits of connecting each other produce is imported PLC behind 16 tunnel separate fault output circuits, optical fiber feedback circuit.
Described rectification circuit adopts 1 power rectifier bridge to carry out rectification, and then connects filter circuit; Filter circuit adopts two electric capacity to carry out filtering, and then connects the High-frequency MOSFET full bridge inverter; The High-frequency MOSFET full bridge inverter adopts 4 power MOSFETs to form full bridge structure, then connects series connection magnet ring buffer circuit; Power MOSFET driving circuit sends control signal by chip SG3525, drives two chip I R2110, and two IR2110 produce 4 road driving pulses and link to each other with drain electrode with the grid of 4 MOSFET of High-frequency MOSFET full bridge inverter respectively; The used magnet ring of high frequency magnet ring buffer circuit is 16 iron based nano crystal magnet rings; Silicon rubber insulation line with withstand voltage 60kV is together in series the elementary of 16 iron based nano crystal magnet rings; The secondary of 16 iron based nano crystal magnet rings inserted auxiliary power circuit with the above conductor loop of withstand voltage 3000V around the back respectively; Each iron based nano crystal magnet ring elementary around 2 the circle, secondary around 4 the circle; 16 the tunnel independently the insulating power supply secondary circuit respectively with secondary the linking to each other of 16 high frequency magnet ring buffer circuits, each insulating power supply secondary circuit is adjusted into 24V through power supply chip LM2576-ADJ with output voltage, input IGBT series circuit; 16 the tunnel independently the IGBT series circuit power input respectively with 16 the tunnel independently insulating power supply secondary circuit output link to each other.
Described PWM amplifying circuit is in series by 2 TLP250, and 2 pin of first TLP250 link to each other with PLC through resistance, and 3 pin of first TLP250 link to each other second with 2 pin of second TLP250
3 pin of individual TLP250 link to each other with PLC, and the output of PWM amplifying circuit links to each other with the optical fiber buffer circuit; The optical fiber buffer circuit has 16 road optical fiber, is divided into two groups, every group 8 road optical fiber; In first group; 2 pin of first optical fiber light head HFBR-1414 link to each other with 6 pin of first TLP250 in the PWM amplifying circuit through resistance; 3 pin of previous HFBR-1414 link to each other with 2 pin of a back HFBR-1414, and 3 pin of the 8th HFBR-1414 link to each other with 5 pin of first TLP250; In second group; 2 pin of the 9th optical fiber light head HFBR-1414 link to each other with 6 pin of second TLP250 in the PWM amplifying circuit through resistance; 3 pin of previous HFBR-1414 link to each other with 2 pin of a back HFBR-1414, and 3 pin of last HFBR-1414 link to each other with 5 pin of second TLP250; The output of optical fiber buffer circuit is that 16 optical fiber are received bare headed HFBR-2412, and 6 pin of each HFBR-2412 connect 2 pin of 16 road signal input part TLP250 of 16 tunnel IGBT series circuits of connecting each other respectively through resistance; Each IGBT series circuit adopts 4 IGBT series connection in 16 tunnel IGBT series circuits of connecting each other; Each IGBT uses M57962L to be chip for driving; 14 pin of first M57962L link to each other with TLP250 through resistance; 13 pin of previous M57962L link to each other with 14 pin of a back M57962L, and 14 pin of the 4th M57962L link to each other with 5 pin of TLP250; The power supply of each M57962L is that voltage is the become a full member DC/DC power module NN2-24D12S3 of negative 12V of the 24V of 3000V, wherein+12V connects 4 pin of M57962L, and-12V connects 6 pin of M57962L; 4 pin of each M57962L link to each other with 1 pin of TLP521-1 through resistance, and 8 pin link to each other with 2 pin of TLP521-1; 16 tunnel IGBT series circuits of connecting each other respectively with 16 the tunnel independently the fault output circuit link to each other; In 3 pin of 4 TLP521-1 in 4 input A of 74HC4072 in the fault output circuit of every road, B, C, D and the every road IGBT series circuit; 1 pin of 74HC4072 links to each other with 2 pin of SN75451; 3 pin of SN75451 link to each other with 2 pin of HFBR-1414, and HFBR-1414 is through optical fiber and optical fiber feedback circuit; The grid of each IGBT of 16 tunnel IGBT series circuits of connecting each other links to each other with 5 pin of the M57962L corresponding with it through resistance; 16 tunnel IGBT series circuits of connecting each other have 64 IGBT; Wherein the collector electrode of first IGBT links to each other with the positive pole of storage capacitor; The emitter of previous IGBT links to each other with the collector electrode of a back IGBT respectively, and until last, the emission of last IGBT is the high-voltage pulse cathode output end very.
Described optical fiber feedback circuit has 16 tunnel optical receiving circuits independently, and 6 pin that 16 road optical fiber are received bare headed HFBR-2412 link to each other with 8 inputs of two 74HC4078 respectively, and 13 pin of two 74HC4078 meet PLC.
The beneficial effect that the utlity model has is:
1, pwm control signal is exported by PLC, through the transmission of 16 tunnel individual fibers, can effectively reduce the interference of high-voltage pulse to pwm control signal.
2, two TLP250 that adopt connect and amplify pwm control signal, can effectively transmit PWM
Control signal can make the pwm control signal after the amplification keep synchronism preferably again.
3, the sharp elementary series connection of adopting the silicon rubber insulation line of withstand voltage 60kV with 16 iron based nano crystal magnet rings, the method for secondary independent output effectively realizes low-pressure side and on high-tension side electric the isolation.
4, the method that adopts M57962L to be connected in series can reduce each IGBT to greatest extent and received
The time difference of gate drive signal, M57962L can isolate control signal and high-voltage signal simultaneously.
5, adopt the fault output circuit can gather overvoltage, over-current signal in real time, and, make PLC cut off control signal, protection system through the PLC that the optical fiber feedback circuit that adopts feeds back fast with each IGBT.
Description of drawings
Fig. 1 is the general structure block diagram of the utility model.
Fig. 2 is the insulating power supply circuit primary circuit figure of the utility model.
Fig. 3 is the power MOSFET driving circuit figure of the utility model.
Fig. 4 is the series connection magnet ring buffer circuit figure of the utility model.
Fig. 5 is the insulating power supply secondary circuit figure of the utility model.
Fig. 6 is the PWM amplifying circuit and the optical fiber buffer circuit figure of the utility model.
Fig. 7 is the IGBT series circuit and the fault output circuit figure of the utility model.
Fig. 8 is the optical fiber feedback circuit figure of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Fig. 1 is the general structure block diagram of the utility model.Comprise high voltage source, storage capacitor, programmable logic controller (PLC) (Programmable Logic Controller, PLC), separate fault output circuit 10, the optical fiber feedback circuit 11 of rectification circuit 1, filter circuit 2, high frequency power MOSFET full bridge inverter 3, power MOSFET driving circuit 4, series connection magnet ring buffer circuit 5,16 tunnel separate insulating power supply secondary circuits 6,16 tunnel IGBT series circuit 7 of connecting each other, optical fiber buffer circuit 8, PWM amplifying circuit 9,16 tunnel; The voltage that high voltage source provides produces high-voltage pulses through many 16 tunnel IGBT series circuits of connecting each other 7 after the storage capacitor energy storage; PLC produces the PWM control impuls, connects the IGBT series circuit 7 that PWM amplifying circuit 9, optical fiber buffer circuit 8,16 tunnel are connected each other successively; Civil power becomes direct current behind rectification circuit 1, filter circuit 2, the IGBT series circuit 7 of connect high frequency power MOSFET full bridge inverter 3 more successively, magnet ring circuit 5, the 16 tunnel separate insulating power supply secondary circuits 6,16 tunnel of connecting being connected each other; Power MOSFET driving circuit 4 links to each other with high frequency power MOSFET full bridge inverter 3; The fault-signal that 16 tunnel IGBT series circuits of connecting each other 7 produce is successively by fault output circuit 10, optical fiber feedback circuit 11 input PLC.
Fig. 2 is the insulating power supply circuit primary circuit figure of the utility model.Comprise rectification circuit 1, filter circuit 2, high frequency power MOSFET full bridge inverter 3.Rectification circuit 1 adopts 1 power rectifier bridge D1 to carry out rectification, and then connects filter circuit 2; Filter circuit adopts two big capacitor C 1, C2 parallel connection to carry out filtering, then connects High-frequency MOSFET full bridge inverter 3; High-frequency MOSFET full bridge inverter 3 adopts 4 power MOSFET Q1 ~ Q4 to form full bridge structure, and the source electrode of Q1 and the source electrode of Q3 connect the input and the output of series connection magnet ring buffer circuit 5 respectively.
Fig. 3 is power MOSFET driving circuit 4 figure of the utility model.U1 is that control impuls produces chip SG3525, can regulate the pulsewidth of the frequency of control impuls through the value that changes coupled R3, C3,11 pin of U1,14 pin output two-way complementary control impuls.
U2 shown in Figure 3, U3 are two power MOSFET chip for driving IR2110, link to each other with 11 pin of U1 after 10 pin of U2 link to each other with 13 pin of U3, link to each other with 14 pin of U1 after 12 pin of U2 link to each other with 10 pin of U3.7 pin of U2 link to each other with the grid of Q1 through resistance R5, and 5 pin of U2 link to each other with the source electrode of Q1; 1 pin of U2 links to each other with the grid of Q2 through resistance R7, and 2 pin of U2 link to each other with the source electrode of Q2; 7 pin of U3 link to each other with the grid of Q3 through resistance R9, and 5 pin of U2 link to each other with the source electrode of Q3; 1 pin of U4 links to each other with the grid of Q4 through resistance R11, and 2 pin of U4 link to each other with the source electrode of Q4.
R6 shown in Figure 3, R8, R10, R12 are parallelly connected with grid and the source electrode of Q1, Q2, Q3, Q4 respectively, play the dividing potential drop effect; D3, D4, D6, D7 are the 15V voltage stabilizing didoe, and be parallelly connected with R6, R8, R10, R12 respectively, and grid and the source voltage that prevents Q1, Q2, Q3, Q4 is too high and damage Q1, Q2, Q3, Q4.
C12 shown in Figure 3, C14 are the tantalum electric capacity of 0.47 μ F, and D2, D5 are fast recovery diode HER107, link to each other with 6 pin of U2 after C12 links to each other with the negative pole of D2, and the positive pole of D2 connects the positive pole of 15V power supply, makes the electrical potential energy of U2 5 pin be higher than 500V; Link to each other with 6 pin of U3 after C14 links to each other with the negative pole of D5, the positive pole of D5 connects the positive pole of 15V power supply, makes the electrical potential energy of U3 5 pin be higher than 500V.
Fig. 4 is series connection magnet ring buffer circuit 5 figure of the utility model.The silicon rubber insulation line of withstand voltage 60kV is the elementary series connection of 16 iron based nano crystal magnet ring T1 ~ T16, each magnet ring elementary around two circles; The secondary lead of being isolated by 3000V of each magnet ring is around four circles.The T1 primary input terminal links to each other with the source electrode of Q1 in the high frequency power MOSFET full bridge inverter 3, and the T16 primary output terminal links to each other with the source electrode of Q3.
Fig. 5 is insulating power supply secondary circuit 6 figure of the utility model.D8, D9, D10, D11 are that four fast recovery diode HER303 form full bridge rectifiers, and C16, C17 are filter power supply, with the square wave of the secondary output of magnet ring after rectification, being filtered into the direct current of 38V, input power supply chip LM2576-ADJ.Through regulating the adjustable resistance R13 that links to each other with LM2576-ADJ, can with the step-down of 38V direct current the voltage output of 24V.16 tunnel separate insulating power supply secondary circuits are exported 16 tunnel separate 24V power supplys altogether.
Fig. 6 is the PWM amplifying circuit 9 and optical fiber buffer circuit 8 figure of the utility model.The signal output part of PLC links to each other with 2 pin of first TLP250 U5 through behind the current-limiting resistance R15, and 3 pin of U5 link to each other with 2 pin of another TLP250 U6.It is high more that PLC sends the voltage of signals amplitude, and the anti-interference of signal is also good more, and therefore making PLC output signal amplitude U is 24V.The current input signal I that needs during TLP250 work
FBe 5 ~ 20mA, forward voltage drop U
FBe 1.8V, the value of R15 can be confirmed by following formula:
R15=(U-2*U
F)/I
F
Optical fiber buffer circuit 8 shown in Figure 6 has 16 road optical fiber, is divided into two groups, every group 8 road optical fiber; 2 pin of first optical fiber light head HFBR-1414 U7 link to each other with 6 pin of U5 in the PWM amplifying circuit 8 through resistance R 16, and 3 pin of previous HFBR-1414 link to each other with 2 pin of a back HFBR-1414, and 3 pin of the 8th HFBR-1414 U14 link to each other with 5 pin of U5; 2 pin of the 9th optical fiber light head HFBR-1414 U23 are through resistance R 17 and PWM amplifying circuit) in 6 pin of U6 link to each other, 3 pin of previous HFBR-1414 link to each other with 2 pin of a back HFBR-1414,3 pin of the 16th HFBR-1414 U30 link to each other with 5 pin of U6; The output of optical fiber buffer circuit 8 is that 16 optical fiber are received bare headed HFBR-2412 U15 ~ U22, U31 ~ U38.
Fig. 7 is the IGBT series circuit 7 and fault output circuit 10 figure of the utility model.6 pin of the output U15 of optical fiber buffer circuit 8 link to each other with 2 pin of TLP250 U39 through resistance R 19 in the IGBT series circuit 7, and 3 pin of U39 link to each other with 2 pin of U15.
Fig. 8 is optical fiber feedback circuit 11 figure of the utility model.Optical fiber feedback circuit 11 shown in Figure 8 has 16 tunnel optical receiving circuits independently; 6 pin that 16 road optical fiber are received bare headed U52 ~ U67 (HFBR-2412) link to each other with 8 inputs of two 8 input NOR gate U68, U69 (74HC4078) respectively, the 13 pin access PLC of two U68, U69.
The course of work of the utility model is following:
16 tunnel IGBT series circuits of connecting each other have 64 IGBT series connection, can bear the 50kV high pressure.The high-tension electricity of high voltage source output 50kV; After the storage capacitor energy storage; The positive pole of storage capacitor is input to the collector electrode of first IGBT in 64 series IGBTs, and 64 series IGBTs turn on and off under the pwm control signal effect that PLC sends simultaneously, produces the high-voltage pulse of 50kV; The positive pole of high-voltage pulse is sent by the emitter of last IGBT in 64 series IGBTs, and negative pole is sent by the negative pole of storage capacitor.
PLC sends the pwm control signal that pulse amplitude is 24V, pulsewidth and frequency adjustable, and control signal is imported two groups of optical fiber light head that are connected in series after two TLP250 U5 that are connected in series, U6 amplify, and wherein U7 ~ U14 is one group, and U23 ~ U30 is one group.16 road optical fiber are delivered to 16 IGBT series circuits with pwm control signal.TLP250 U15 will amplify 4 of rear drives from the pwm control signal of optical fiber
The IGBT driver M57962L U41, U43, U45, the U47 that are connected in series, the required power supply of 4 drivers respectively by 4 24V inputs, ± power module of 12V output provides.U41, U43, U45, U47 export simultaneously ± IGBT T1 ~ T4 that 4 of the pulsed drive of 12V are connected in series.When arbitrary IGBT breaks down among T1 ~ T4; Fault-signal is delivered to the driver (U41, U43, U45, U47) of this fault IGBT through the fast recovery diode (D14, D19, D24, D29) that links to each other with this fault IGBT collector electrode, and this driver is delivered to the TLP521-1 (U42, U44, U46, U48) that links to each other with its 8 pin with fault-signal again.The TLP521-1 (U42, U44, U46, U48) that receives fault-signal imports fault-signal input four or door 74HC4072 through its 3 pin again; The 1 pin output low level of 74HC4072 is to 2 pin of SN75451, and the SN75451 output high level that link to each other with its 1 pin this moment makes optical fiber light head U51 work.Optical fiber is received bare headed U52 and is linked to each other in U51 and the optical fiber feedback circuit; 2 pin of 6 pin output fault-signal to the 8 input NOR gate U68 of U52; This moment U68 the PLC of 13 pin output low levels, PLC turn-offs pwm control signal immediately, makes entire I GBT series circuit be in off state.U49, U50, U51 in the fault output circuit reduce to 5V output by power supply chip U40 (LM2576-5.0) with 24V voltage with U15, U42, U44, U46, the required 5V working power of U48 in the IGBT series circuit.The required 24V power supply of V1, V2, V3, V4 and U40 is originated as follows:
Rectification circuit is direct current through 1 power rectifier bridge D1 with the commercial power rectification of importing, and filter capacitor C1, C2 carry out filtering to it, and then connects the High-frequency MOSFET full bridge inverter.U1 in the power MOSFET driving circuit (SG3525) sends control signal; Drive two power MOSFET chip for driving U2, U3 (IR2110); U2, U3 produce four power MOSFET Q1 ~ Q4 work that 4 road driving pulses make the High-frequency MOSFET full bridge inverter, are that frequency is the high frequency square wave of 100kHz with dc inverter.The source electrode of Q1 connects the silicon rubber insulation line of a withstand voltage 60kV, and this insulated wire is received 16 iron based nano crystal magnet ring T1 ~ T16, and each magnet ring is connected in series the elementary of 16 iron based nano crystal magnet rings around two circles.
The secondary of 16 iron based nano crystal magnet rings inserted 16 independently insulating power supply secondary circuits with the above conductor loop of withstand voltage 3000V respectively around the back.D8 in the insulating power supply secondary circuit, D9, D10, four fast recovery diodes of D11 are direct current with the 100kHz high frequency square wave rectification of input; C16, C17 carry out filtering to it makes its direct current of voltage regulation that becomes 38V, imports power supply chip U4 (LM2576-ADJ) subsequently.Through regulating the adjustable resistance R13 that links to each other with U4, be the voltage output of 24V with the 38V DC decompression.16 the tunnel independently the insulating power supply secondary circuit export respectively 16 the tunnel independently the 24V power supply be the power supply of 16 road IGBT series circuits and 16 tunnel fault output circuits.
Claims (4)
1. IGBT tandem type high-voltage pulse generator is characterized in that: comprise IGBT series circuit (7) that high voltage source, storage capacitor, PLC, rectification circuit (1), filter circuit (2), high frequency power MOSFET full bridge inverter (3), power MOSFET driving circuit (4), series connection magnet ring buffer circuit (5), 16 tunnel separate insulating power supply secondary circuits (6), 16 tunnel connect each other, optical fiber buffer circuit (8), PWM amplifying circuit (9), 16 tunnel separate fault output circuit (10) and optical fiber feedback circuits (11); The voltage that high voltage source provides produces high-voltage pulse through 16 tunnel IGBT series circuits (7) of connecting each other after the storage capacitor energy storage; PLC produces the PWM control impuls, connects the IGBT series circuit (7) that PWM amplifying circuit (9), optical fiber buffer circuit (8), 16 tunnel are connected each other successively; Civil power becomes direct current through rectification circuit (1), filter circuit after (2), connects independently insulating power supply secondary circuit (6), 16 tunnel IGBT series circuit (7) of connecting each other of high frequency power MOSFET full bridge inverter (3), series connection magnet ring circuit (5), 16 tunnel more successively; Power MOSFET driving circuit (4) links to each other with high frequency power MOSFET full bridge inverter (3); The fault-signal of 16 tunnel IGBT series circuit (7) outputs of connecting each other is successively by 16 tunnel independently fault output circuit (10), optical fiber feedback circuit (11) input PLC.
2. a kind of IGBT tandem type high-voltage pulse generator according to claim 1 is characterized in that: described rectification circuit (1) adopts 1 power rectifier bridge to carry out rectification, and then connects filter circuit (2); Filter circuit (2) adopts two electric capacity to carry out filtering, and then connects High-frequency MOSFET full bridge inverter (3); High-frequency MOSFET full bridge inverter (3) adopts 4 power MOSFETs to form full bridge structure, and then connects series connection magnet ring buffer circuit (5); Power MOSFET driving circuit (4) sends control signal by chip SG3525, drives two chip I R2110, and two IR2110 produce 4 road driving pulses and link to each other with drain electrode with the grid of 4 MOSFET of High-frequency MOSFET full bridge inverter (3) respectively; The used magnet ring of high frequency magnet ring buffer circuit (5) is 16 iron based nano crystal magnet rings; Silicon rubber insulation line with withstand voltage 60kV is together in series the elementary of 16 iron based nano crystal magnet rings; The secondary of 16 iron based nano crystal magnet rings inserted 16 tunnel insulating power supply secondary circuits (6) independently with the above conductor loop of withstand voltage 3000V respectively around the back; Each iron based nano crystal magnet ring elementary around 2 the circle, secondary around 4 the circle; 16 the tunnel independently insulating power supply secondary circuit (6) input respectively with 16 tunnel secondary linking to each other of 16 high frequency magnet ring buffer circuits (5); 16 the tunnel independently insulating power supply secondary circuit (6) through 16 power supply chip LM2576-ADJ output voltage is adjusted into the direct current of voltage regulation of the 24V of 16 road independent outputs, and import 16 tunnel IGBT series circuits (7) of connecting each other.
3. a kind of IGBT tandem type high-voltage pulse generator according to claim 1; It is characterized in that: the PWM control impuls that described PLC produced inserts PWM amplifying circuit (9); PWM amplifying circuit (9) is in series by 2 TLP250, and 2 pin of first TLP250 link to each other with PLC through resistance, and 3 pin of first TLP250 link to each other with 2 pin of second TLP250; 3 pin of second TLP250 link to each other with PLC, and the output of PWM amplifying circuit (9) links to each other with optical fiber buffer circuit (8); Optical fiber buffer circuit (8) has 16 road optical fiber, is divided into two groups, every group 8 road optical fiber; In first group; 2 pin of first optical fiber light head HFBR-1414 link to each other with 6 pin of first TLP250 in the PWM amplifying circuit (9) through resistance; 3 pin of previous HFBR-1414 link to each other with 2 pin of a back HFBR-1414, and 3 pin of the 8th HFBR-1414 link to each other with 5 pin of first TLP250; In second group; 2 pin of the 9th optical fiber light head HFBR-1414 link to each other with 6 pin of second TLP250 in the PWM amplifying circuit (9) through resistance; 3 pin of previous HFBR-1414 link to each other with 2 pin of a back HFBR-1414, and 3 pin of last HFBR-1414 link to each other with 5 pin of second TLP250; The output of optical fiber buffer circuit (8) is that 16 optical fiber are received bare headed HFBR-2412, and 6 pin of each HFBR-2412 connect 2 pin of 16 road signal input part TLP250 of 16 tunnel IGBT series circuits (7) of connecting each other respectively through resistance; Every road IGBT series circuit adopts 4 IGBT series connection in 16 tunnel IGBT series circuits (7) of connecting each other; Each IGBT uses 1 M57962L to be chip for driving; 14 pin of first M57962L link to each other with TLP250 through resistance; 13 pin of previous M57962L link to each other with 14 pin of a back M57962L, and 14 pin of the 4th M57962L link to each other with 5 pin of TLP250; The power supply of each M57962L is that isolation voltage is the become a full member DC/DC power module NN2-24D12S3 of negative 12V of the 24V of 3000V, wherein+12V connects 4 pin of M57962L, and-12V connects 6 pin of M57962L; 4 pin of each M57962L link to each other with 1 pin of TLP521-1 through resistance, and 8 pin link to each other with 2 pin of TLP521-1; 16 tunnel IGBT series circuits (7) of connecting each other respectively with 16 the tunnel independently fault output circuit (10) link to each other; Every road fault output circuit (10) comprises chip 74HC4072, SN75451 and an optical fiber light head HFBR-1414; In 3 pin of 4 TLP521-1 in 4 input A of each 74HC4072, B, C, D and the every road IGBT series circuit (7); 1 pin of 74HC4072 links to each other with 2 pin of SN75451; 3 pin of SN75451 link to each other with 2 pin of HFBR-1414, and HFBR-1414 is through optical fiber and optical fiber feedback circuit (11); The grid of each IGBT of 16 tunnel IGBT series circuits (7) of connecting each other links to each other with 5 pin of the M57962L corresponding with it through resistance; 16 tunnel IGBT series circuits (7) of connecting each other have 64 IGBT; Wherein the collector electrode of first IGBT links to each other with the positive pole of storage capacitor; The emitter of previous IGBT links to each other with the collector electrode of a back IGBT respectively, and until last, the emission of last IGBT is the high-voltage pulse cathode output end very.
4. a kind of IGBT tandem type high-voltage pulse generator according to claim 1; It is characterized in that: described optical fiber feedback circuit (11) comprising: 16 tunnel optical receiving circuits independently; 2 74HC4078; Wherein 16 optical fiber 6 pin of receiving bare headed HFBR-2412 link to each other with 8 inputs of two 74HC4078 respectively, and 13 pin of two 74HC4078 meet PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201010721U CN202550982U (en) | 2012-03-16 | 2012-03-16 | High-voltage pulse generator with IGBTs connected in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201010721U CN202550982U (en) | 2012-03-16 | 2012-03-16 | High-voltage pulse generator with IGBTs connected in series |
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| CN202550982U true CN202550982U (en) | 2012-11-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611413A (en) * | 2012-03-16 | 2012-07-25 | 浙江大学 | Insulated gate bipolar translator (IGBT) series connection type high-voltage pulse generator |
| CN103872909A (en) * | 2014-03-28 | 2014-06-18 | 珠海万力达电气股份有限公司 | Optical fiber drive circuit |
| CN105471234A (en) * | 2015-12-16 | 2016-04-06 | 山西惠特科技有限公司 | Optical fiber signal conversion circuit for 3,300V high-power IGBT driver |
-
2012
- 2012-03-16 CN CN2012201010721U patent/CN202550982U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611413A (en) * | 2012-03-16 | 2012-07-25 | 浙江大学 | Insulated gate bipolar translator (IGBT) series connection type high-voltage pulse generator |
| CN103872909A (en) * | 2014-03-28 | 2014-06-18 | 珠海万力达电气股份有限公司 | Optical fiber drive circuit |
| CN105471234A (en) * | 2015-12-16 | 2016-04-06 | 山西惠特科技有限公司 | Optical fiber signal conversion circuit for 3,300V high-power IGBT driver |
| CN105471234B (en) * | 2015-12-16 | 2018-02-23 | 山西惠特科技有限公司 | Fiber-optic signal change-over circuit for the driving of 3300V high-power IGBTs |
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