CN117895819A - Single-power bipolar pulse power supply topology based on Marx structure - Google Patents

Single-power bipolar pulse power supply topology based on Marx structure Download PDF

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Publication number
CN117895819A
CN117895819A CN202311771853.0A CN202311771853A CN117895819A CN 117895819 A CN117895819 A CN 117895819A CN 202311771853 A CN202311771853 A CN 202311771853A CN 117895819 A CN117895819 A CN 117895819A
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China
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power supply
emitter
topology
negative
capacitor
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CN202311771853.0A
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Chinese (zh)
Inventor
韦坚
李祥辉
鄂鹏
刘一琦
王伟男
赵晓坤
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Northeast Forestry University
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Northeast Forestry University
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Abstract

The invention discloses a single-power bipolar pulse power supply topology based on a Marx structure, which consists of a direct-current power supply, a full bridge, the Marx structure and an IGBT S 5 ～S 17 Diode D 1 ～D 7 The composition is formed. The invention provides a novel modularized bipolar pulse power supply based on a Marx dual-power generator. The topology utilizes a single power supply to charge a plurality of capacitors in parallel by controlling a full bridge, so that the capacitors generate different positive and negative polarities, and then the capacitors with different polarities are connected in series by controlling the on-off of an IGBT, so that positive polarity or negative polarity pulses are transmitted to a load. The invention is based on a Mark circuit and an IGBT stack as a main body frame, solves the defects of low charging speed and low pulse repetition rate of the traditional pulse power supply, and simultaneously solves the problem of transmission under the condition of single power supplyThe pulse power supply can only output positive pulse or negative pulse, but can not generate positive and negative pulses at the same time.

Description

Single-power bipolar pulse power supply topology based on Marx structure
Technical Field
The invention belongs to the field of motor control, relates to a bipolar pulse power supply topology, and particularly relates to a single-power bipolar pulse power supply topology based on a Marx structure.
Background
In a pulse power supply system, the application of the Mark structure is wider, compared with a traditional pulse power supply, the Mark structure and the IGBT are combined, so that the pulse power supply has a faster rising edge, the loss of a circuit is lower, and the pulse repetition rate is higher.
Fig. 1 is a schematic diagram of a conventional Marx circuit, which realizes the functions of parallel charging and serial discharging of capacitors, and has strong expandability, so that the Marx structure can be improved according to different requirements. However, the conventional Marx structure has the defects of low charging speed, large circuit loss, low pulse repetition rate and only single-direction pulse power supply generation, so that the application of the pulse power supply is greatly limited.
Disclosure of Invention
The invention aims to provide a single-power-supply bipolar pulse power supply topology based on a Marx structure, which solves the defects of the traditional Marx structure, so that the pulse power supply has the advantages of higher charging speed, smaller circuit loss and higher pulse repetition rate, and can generate a positive-negative bidirectional pulse power supply under the condition of the single power supply, and diode devices in the circuit do not need to bear excessive reverse voltage, thereby widening the application of the pulse power supply and protecting the devices in the circuit.
The invention aims at realizing the following technical scheme:
a single-power bipolar pulse power topology based on Marx structure comprises a direct-current power supply, a full bridge, marx structure and IGBT S 5 ～S 17 Diode D 1 ～D 7 The composition comprises:
the full bridge consists of a power switch device S 1 、S 2 、S 3 、S 4 Composition, S 1 Emitter and S of (2) 3 Is connected togetherIs formed into a bridge arm S 2 Emitter and S of (2) 4 The collectors of (a) are connected together to form another bridge arm, the two bridge arms are connected in parallel, S 1 Is connected to S 2 Collector, S 3 Is connected to S 4 The emitter of the full bridge is connected to the positive electrode end of the direct current power supply, and the emitter of the full bridge is connected to the negative electrode end of the direct current power supply;
the S is 6 Is connected to diode D 1 S is the negative electrode of 6 Is connected to S 7 Emitter, S 7 Is connected to S 8 Collector, S 8 Is connected to S 9 Emitter, S 9 Is connected to S 10 Collector, S 10 Is connected to S 11 Emitter, S 11 Is connected to diode D 4 S is the negative electrode of 12 The emitter of (a) is connected to the capacitor C 1 S is the negative electrode of 12 Is connected to S 13 Collector, S 13 Is connected to S 14 Emitter, S 14 Is connected to S 15 Collector, S 15 Is connected to S 16 Emitter, S 16 Is connected to S 17 Collector, S 17 The emitter of (a) is connected to the capacitor C 7 Is a negative electrode of (a);
the D is 1 、D 2 、D 3 、D 4 Is connected to the full bridge S 2 Emitter of D 1 、D 2 、D 3 、D 4 The negative electrodes of (a) are respectively connected to the capacitor C 1 、C 3 、C 5 、C 7 Positive electrode of D 5 Is connected to S 2 Emitter of D 5 Is connected to D 6 Is a negative electrode of D 6 Is connected to D 7 Is a negative electrode of D 7 The positive electrode of (a) is connected to the capacitor C 6 Is a negative electrode of (a).
Compared with the prior art, the invention has the following advantages:
1. the invention is based on a Mark circuit and an IGBT stack as a main body frame, solves the defects of low charging speed and low pulse repetition rate of the traditional pulse power supply, and simultaneously solves the defect that the traditional pulse power supply can only output positive pulse or negative pulse and can not generate positive pulse and negative pulse at the same time under the condition of single power supply.
2. The topology provided by the invention blocks the loop by controlling the turn-on and turn-off of the IGBT, thereby avoiding the condition that the loop is in short circuit reflux, simultaneously avoiding the defect that the diode is subjected to reverse high voltage, and well protecting the working device.
3. The invention provides a novel modularized bipolar pulse power supply based on a Marx dual-power generator. The principle of the topology is that a single power supply is utilized to respectively charge a plurality of capacitors in parallel through controlling a full bridge, so that the capacitors generate different positive and negative polarities, and then the capacitors with different polarities are connected in series through controlling the on-off of an IGBT, so that positive polarity or negative polarity pulses are transmitted to a load.
Drawings
FIG. 1 is a conventional Marx circuit;
FIG. 2 is a schematic diagram of a Marx structure-based single power supply bipolar pulse power supply topology;
FIG. 3 is a capacitor charging stage 1;
FIG. 4 is a capacitor charging stage 2;
FIG. 5 is a forward discharge phase of the capacitor;
fig. 6 is a reverse discharge phase of the capacitor.
Detailed Description
The following description of the present invention is provided with reference to the accompanying drawings, but is not limited to the following description, and any modifications or equivalent substitutions of the present invention should be included in the scope of the present invention without departing from the spirit and scope of the present invention.
The invention provides a single power source bipolar pulse power source topology based on a Marx structure, which adopts a positive direct current power source to supply power as shown in figure 2, and consists of a direct current power source, a full bridge, a Marx structure and an IGBT S 5 ～S 17 Diode D 1 ～D 7 The composition is formed. Full bridge power switch deviceS 1 、S 2 、S 3 、S 4 Composition, S 1 Emitter and S of (2) 3 The collectors of (a) are connected together to form a bridge arm S 2 Emitter and S of (2) 4 The collectors of (a) are connected together to form another bridge arm, the two bridge arms are connected in parallel, S 1 Is connected to S 2 Collector, S 3 Is connected to S 4 Form a full bridge. The collector of the full bridge is connected to the positive terminal of the direct current power supply, and the emitter of the full bridge is connected to the negative terminal of the direct current power supply. S is S 6 Is connected to diode D 1 S is the negative electrode of 6 Is connected to S 7 Emitter, S 7 Is connected to S 8 Collector, S 8 Is connected to S 9 Emitter, S 9 Is connected to S 10 Collector, S 10 Is connected to S 11 Emitter, S 11 Is connected to diode D 4 Is a negative electrode of (a). S is S 12 The emitter of (a) is connected to the capacitor C 1 S is the negative electrode of 12 Is connected to S 13 Collector, S 13 Is connected to S 14 Emitter, S 14 Is connected to S 15 Collector, S 15 Is connected to S 16 Emitter, S 16 Is connected to S 17 Collector, S 17 The emitter of (a) is connected to the capacitor C 7 Is a negative electrode of (a). Diode D 1 、D 2 、D 3 、D 4 Is connected to the full bridge S 2 Emitter of D 1 、D 2 、D 3 、D 4 The cathodes of the capacitors C1, C3, C5, C7 are connected to the anodes, respectively. Diode D 5 Is connected to the full bridge S 2 Emitter of D 5 Is connected to D 6 Is a negative electrode of D 6 Is connected to D 7 Is a negative electrode of D 7 The positive electrode of (a) is connected to the capacitor C 6 Is a negative electrode of (a). The topology can realize the function of parallel charging and serial discharging of the capacitor, and has the advantages of high charging speed, high pulse repetition rate and no need of bearing the diodeReverse high voltage, and positive and negative pulse generation.
Charging:
capacitor charging stage 1 is shown in FIG. 3, and is powered by a 500V positive DC power supply, and switch S is provided when the circuit is in charging stage 1 1 、S 4 、S 12 ～S 16 Closing, S 5 ～S 11 、S 17 Open and current flows as shown in fig. 3. At this time, capacitor C 2 、C 4 、C 6 Charging, generating 500V voltage with positive lower voltage and negative upper voltage. Diode D 1 、D 2 、D 3 The capacitor C is blocked by receiving reverse voltage 1 、C 3 、C 5 、C 7 And cannot be charged.
Capacitor charging stage 2 is shown in FIG. 4 and is powered by a 500V positive DC power supply, switch S when the circuit is in charging stage 2 2 、S 3 、S 5 、S 12 ～S 17 Closing, S 6 ～S 11 Open and current flows as shown in fig. 4. At this time, capacitor C 1 、C 3 、C 5 、C 7 Charging, generating 500V voltage with positive upper and negative lower. Diode D 5 The capacitor C is blocked by receiving reverse voltage 2 、C 4 、C 6 And cannot be charged.
Discharge phase:
the voltage generated by the two ends of the load is set as the positive discharge of the capacitor.
The capacitive forward discharge phase is shown in fig. 5. Switch S when the circuit is in the capacitive forward discharge phase 1 ～S 6 Open, switch S 8 、S 10 、S 13 、S 15 、S 17 Open, switch S 7 、S 9 、S 11 、S 12 、S 14 、S 16 Closing, the current flow is shown in FIG. 5, capacitor C 2 ～C 7 In the series discharge state, the potentials of each point are shown in fig. 5. At this time, 3000V voltage was generated across the load, plus left and right.
The capacitive reverse discharge phase is shown in fig. 6. Switch S when the circuit is in reverse discharge phase 1 ～S 5 Open, switch S 7 、S 9 、S 11 、S 12 、S 14 、S 16 Open, switch S 6 、S 8 、S 10 、S 13 、S 15 、S 17 Closed, the current flows to the capacitor C as shown in FIG. 6 1 ～C 6 In the series discharge state, the potentials of each point are shown in fig. 6. At this time, 3000V voltage was generated across the load.

Claims (5)

1. A single-power bipolar pulse power supply topology based on a Marx structure is characterized by comprising a direct-current power supply, a full bridge, the Marx structure and an IGBT S 5 ～S 17 Diode D 1 ～D 7 The composition comprises:
the full bridge consists of a power switch device S 1 、S 2 、S 3 、S 4 Composition, S 1 Emitter and S of (2) 3 The collectors of (a) are connected together to form a bridge arm S 2 Emitter and S of (2) 4 The collectors of (a) are connected together to form another bridge arm, the two bridge arms are connected in parallel, S 1 Is connected to S 2 Collector, S 3 Is connected to S 4 The emitter of the full bridge is connected to the positive electrode end of the direct current power supply, and the emitter of the full bridge is connected to the negative electrode end of the direct current power supply;
the S is 6 Is connected to diode D 1 S is the negative electrode of 6 Is connected to S 7 Emitter, S 7 Is connected to S 8 Collector, S 8 Is connected to S 9 Emitter, S 9 Is connected to S 10 Collector, S 10 Is connected to S 11 Emitter, S 11 Is connected to diode D 4 S is the negative electrode of 12 The emitter of (a) is connected to the capacitor C 1 S is the negative electrode of 12 Is connected to S 13 Collector, S 13 Is connected to S 14 Emitter, S 14 Is connected with the collector of (a)To S 15 Collector, S 15 Is connected to S 16 Emitter, S 16 Is connected to S 17 Collector, S 17 The emitter of (a) is connected to the capacitor C 7 Is a negative electrode of (a);
the D is 1 、D 2 、D 3 、D 4 Is connected to the full bridge S 2 Emitter of D 1 、D 2 、D 3 、D 4 The negative electrodes of (a) are respectively connected to the capacitor C 1 、C 3 、C 5 、C 7 Positive electrode of D 5 Is connected to S 2 Emitter of D 5 Is connected to D 6 Is a negative electrode of D 6 Is connected to D 7 Is a negative electrode of D 7 The positive electrode of (a) is connected to the capacitor C 6 Is a negative electrode of (a).
2. A Marx structure based single power source bipolar pulse power source topology according to claim 1, characterized by S when said topology is in charging stage 1 1 、S 4 、S 12 ～S 16 Closing, S 5 ～S 11 、S 17 On, at this time capacitor C 2 、C 4 、C 6 Charging, generating 500V voltage with positive lower voltage and negative upper voltage.
3. A Marx structure based single power source bipolar pulse power source topology according to claim 1, characterized by S when said topology is in charging phase 2 2 、S 3 、S 5 、S 12 ～S 17 Closing, S 6 ～S 11 On, at this time capacitor C 1 、C 3 、C 5 、C 7 Charging, generating 500V voltage with positive upper and negative lower.
4. The Marx structure-based single-power bipolar pulse power supply topology as claimed in claim 1, wherein said topology is characterized by S when said topology is in a capacitive forward discharge phase 1 ～S 6 Open, S 8 、S 10 、S 13 、S 15 、S 17 Open, S 7 、S 9 、S 11 、S 12 、S 14 、S 16 Closed, at this time capacitor C 2 ～C 7 In a series discharge state.
5. A Marx structure based single power source bipolar pulse power source topology as defined in claim 1, wherein said topology is in reverse discharge phase, S 1 ～S 5 Open, S 7 、S 9 、S 11 、S 12 、S 14 、S 16 Open, S 6 、S 8 、S 10 、S 13 、S 15 、S 17 Closed, at this time capacitor C 1 ～C 6 In a series discharge state.
CN202311771853.0A 2023-12-21 2023-12-21 Single-power bipolar pulse power supply topology based on Marx structure Pending CN117895819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311771853.0A CN117895819A (en) 2023-12-21 2023-12-21 Single-power bipolar pulse power supply topology based on Marx structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311771853.0A CN117895819A (en) 2023-12-21 2023-12-21 Single-power bipolar pulse power supply topology based on Marx structure

Publications (1)

Publication Number Publication Date
CN117895819A true CN117895819A (en) 2024-04-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311771853.0A Pending CN117895819A (en) 2023-12-21 2023-12-21 Single-power bipolar pulse power supply topology based on Marx structure

Country Status (1)

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