CN102148571A - High-frequency high-voltage DC switching power source based on current source mode - Google Patents

High-frequency high-voltage DC switching power source based on current source mode Download PDF

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Publication number
CN102148571A
CN102148571A CN201110098162XA CN201110098162A CN102148571A CN 102148571 A CN102148571 A CN 102148571A CN 201110098162X A CN201110098162X A CN 201110098162XA CN 201110098162 A CN201110098162 A CN 201110098162A CN 102148571 A CN102148571 A CN 102148571A
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CN
China
Prior art keywords
voltage
frequency
current
electric capacity
inductance
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CN201110098162XA
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Chinese (zh)
Inventor
张玉婷
李建文
邢建平
孟令国
蔡洪宝
邱雪梅
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济南卓信智能科技有限公司
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Priority to CN201110098162XA priority Critical patent/CN102148571A/en
Publication of CN102148571A publication Critical patent/CN102148571A/en

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Abstract

The invention relates to a high-frequency high-voltage DC switching power source based on a current source mode, which comprises a voltage source module, an inductive circuit unit, an inverter module and a rectifier module, wherein the voltage source module comprises a three-phase AC power source, a three-phase phase control rectifier bridge, a first inductor and a first capacitor, wherein the inductive circuit unit comprises a first power resistor, a second power resistor, a diode, a second capacitor and a second inductor; the inverter module comprises an inverter bridge and an inverter transformer; and the rectifier module comprises a rectifier bridge and a third capacitor. The dynamic characteristics of the high-voltage output end of the high-frequency high-voltage DC switching power source are similar to the characteristics of a constant current source, the traditional high-frequency high-voltage output filtering inductor is eliminated, the fault rate and the switching loss are reduced, and the magnetic biasing problem of the inverter transformer in a voltage source mode is thoroughly solved; the high-frequency high-voltage DC switching power source has soft start capacity, a control feedback loop can be established to realize the automatic voltage regulation function; and an inductor open-circuit follow current protection circuit is introduced, so that the inductor follow current problem of the switching power source in the current source mode after the inverter bridge is open-circuit is solved.

Description

High-frequency high-voltage direct-current Switching Power Supply based on the current source pattern
Technical field
The present invention relates to a kind of switching power unit, specifically a kind of high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern.
Background technology
The inverter circuit of current source (Current Source) pattern obtains extensive use in the super high power application, is for example exchanging transmission, induction heating, power plant's reactive power compensation and direct current machine driving etc.In the super high power application, the inverter circuit of current source pattern adopts the low speed self-on-off switching device of turn-off thyristor (GTO) or high power transistor (GTR) and so on as switch mostly.
It is the inverter circuit of the voltage source mode of switch that the main circuit of middle low power direct-current switch power supply adopts mostly with insulated gate bipolar transistor (IGBT) or field-effect transistor (MOSFET).The direct-current switch power supply of this structure has following problem, has limited its application in the high-power field of dc high voltage:
1) the inverter outlet side needs filter inductance, and when output voltage was very high, the outputting inductance complex process, volume was big, cost is high;
2) reverse recovery characteristic of the fast recovery diode of outlet side rectification circuit or high voltage silicon stack is very poor, is easy to cause diode or high voltage silicon stack to puncture;
3) become big with power, the magnetic asymmetry problem of contravariant transformer is difficult to solve, and causes the converter bridge switching parts overcurrent to burn easily.
Summary of the invention
At above-mentioned deficiency, the invention provides a kind of high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern, mainly as middle high-power high voltage direct-current switch power supply, not only volume is little, cost is low, and performance is good for it.
The present invention solves the technical scheme that its technical problem takes: the high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern, comprise voltage source module, inversion module and rectification module, and it is characterized in that, also comprise the inductive circuit unit;
Described voltage source module comprises three-phase alternating-current supply, three-phase phase control rectifier bridge, first inductance and first electric capacity, described inductive circuit unit comprises first power resistor, second power resistor, diode, second electric capacity and second inductance, described inversion module comprises inverter bridge and contravariant transformer, and described rectification module comprises rectifier bridge and the 3rd electric capacity;
Wherein, the A end of described three-phase phase control rectifier bridge input side, B end and C end are connected with A end, B end and the C end of three-phase alternating-current supply outlet side respectively, the cathode output end of three-phase phase control rectifier bridge is connected with an end of first inductance, and cathode output end is connected with an end of first electric capacity and the negative input of inverter bridge; The other end of described first inductance is connected with the other end of first electric capacity, an end of first power resistor and an end of second inductance; One end of described diode is connected with the other end of first power resistor, and the other end is connected with an end of second power resistor and the positive terminal of second electric capacity; The electrode input end of described inverter bridge is connected with the other end of second inductance, the other end of second power resistor and the negative pole end of second electric capacity; The input side of described contravariant transformer is connected with the side a and b of inverter bridge outlet side respectively, and outlet side is connected with the side a and b of rectifier bridge input side respectively; The cathode output end of described rectifier bridge is connected with an end of the 3rd electric capacity and the positive pole of load, and cathode output end is connected with the other end of the 3rd electric capacity and the negative pole of load.
The switching component of described three-phase phase control rectifier bridge adopts turn-off thyristor.
The switching component of described inverter bridge adopts insulated gate bipolar transistor or field-effect transistor.
The switching component of described rectifier bridge adopts high voltage silicon stack.
Described first inductance and first electric capacity constitute low pass filter.
Described first power resistor and diode and second power resistor are connected in proper order with the circuit unit of the second electric capacity parallel connection and are constituted inductance open circuit afterflow protective circuit unit.
Further, the G of described three-phase phase control rectifier bridge end is connected with first pulse control circuit.
The G end of described inverter bridge is connected with second pulse control circuit.
The invention has the beneficial effects as follows:
1) constitutes a kind of high frequency switch power based on the current source pattern.Its high-voltage output end dynamic characteristic is approximate constant-current source characteristic, has removed that traditional volume is big, complex process, cost expensive high-frequency high pressure output inductor; Significantly reduced the di/dt of the high voltage silicon stack of high pressure outlet side rectifier bridge, obviously reduced its failure rate and switching loss in reverse recovery; Significantly reduce the on/off stress and the loss of the switching tube of inverter bridge, thoroughly solved the magnetic bias problem of contravariant transformer in the voltage source mode, significantly improved system reliability.
2) serve as the main electric current adjustable current source that constituted with the phase control rectifier bridge.Not only possesses soft start capacity; If between the electric current and voltage of the pulse control circuit of three-phase phase control rectifier bridge and inverter bridge and output, set up feedback control loop, can realize the automatic voltage regulation function.
3) introduced the inductance open circuit afterflow protective circuit that constitutes by first power resistor, fast diode, second power resistor and large capacity single polarity second electric capacity that recovers.When Switching Power Supply load overcurrent or load abnormal; when needing to turn-off inverter bridge fast; inductance open circuit afterflow protective circuit plays afterflow and absorbs the effect of inverter bridge DC side peak voltage, has successfully solved the inductance afterflow problem behind the inverter bridge open circuit of current source mode switch power supply.
Description of drawings
Fig. 1 is a structured flowchart of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
As shown in Figure 1, should comprise voltage source module, inductive circuit unit, inversion module and rectification module based on the high-frequency high-voltage direct-current Switching Power Supply of current source pattern.Described voltage source module comprises that three-phase alternating-current supply VS, switching component adopt three-phase phase control rectifier bridge BD1, first inductance L 1 and first capacitor C 1 of turn-off thyristor, described inductive circuit unit comprises the first power resistor R1, the second power resistor R2, diode D1 and second capacitor C 2, described inversion module comprises that switching component adopts the inverter bridge BD2 and the contravariant transformer T1 of insulated gate bipolar transistor or field-effect transistor, and described rectification module comprises the rectifier bridge BD3 and the 3rd capacitor C 3 of closing components and parts employing high voltage silicon stack; Described first inductance L 1 and first capacitor C 1 constitute low pass filter; The G end of described three-phase phase control rectifier bridge BD1 is connected with the first pulse control circuit CU1, and the G end of described inverter bridge BD2 is connected with the second pulse control circuit CU2.
As shown in Figure 2, the A end of described three-phase phase control rectifier bridge BD1 input side, B end and C end are connected with A end, B end and the C end of three-phase alternating-current supply VS outlet side respectively, the cathode output end of three-phase phase control rectifier bridge BD1 is connected with an end of first inductance L 1, and cathode output end is connected with an end of first capacitor C 1 and the negative input of inverter bridge BD2; The other end of described first inductance L 1 is connected with the other end of first capacitor C 1, the end of the first power resistor R1 and an end of second inductance L 2; The end of described diode D1 is connected with the other end of the first power resistor R1, and the other end is connected with the end of the second power resistor R2 and the positive terminal of second capacitor C 2; The electrode input end of described inverter bridge BD2 is connected with the other end of second inductance L 2, the other end of the second power resistor R2 and the negative pole end of second capacitor C 2; The input side of described contravariant transformer T1 is connected with the side a and b of inverter bridge BD2 outlet side respectively, and outlet side is connected with the side a and b of rectifier bridge BD3 input side respectively; The cathode output end of described rectifier bridge BD3 is connected with an end of the 3rd capacitor C 3 and the positive pole of load ZL, and cathode output end is connected with the other end of the 3rd capacitor C 3 and the negative pole of load ZL.The described first pulse control circuit CU1 is connected with the G end of three-phase phase control rectifier bridge BD1, and the second pulse control circuit CU2 is connected with the G end of inverter bridge BD2.

Claims (8)

1. based on the high-frequency high-voltage direct-current Switching Power Supply of current source pattern, comprise voltage source module, inversion module and rectification module, it is characterized in that, also comprise the inductive circuit unit;
Described voltage source module comprises three-phase alternating-current supply (VS), three-phase phase control rectifier bridge (BD1), first inductance (L1) and first electric capacity (C1), described inductive circuit unit comprises first power resistor (R1), diode (D1), second power resistor (R2), second electric capacity (C2) and second inductance (L2), described inversion module comprises inverter bridge (BD2) and contravariant transformer (T1), and described rectification module comprises rectifier bridge (BD3) and the 3rd electric capacity (C3);
Wherein, the A end of described three-phase phase control rectifier bridge (BD1) input side, B end and C end are connected with A end, B end and the C end of three-phase alternating-current supply (VS) outlet side respectively, the cathode output end of three-phase phase control rectifier bridge (BD1) is connected with an end of first inductance (L1), and cathode output end is connected with an end of first electric capacity (C1) and the negative input of inverter bridge (BD2); The other end of described first inductance (L1) is connected with an end of the other end of first electric capacity (C1), first power resistor (R1) and an end of second inductance (L2); One end of described diode (D1) is connected with the other end of first power resistor (R1), and the other end is connected with an end of second power resistor (R2) and the positive terminal of second electric capacity (C2); The electrode input end of described inverter bridge (BD2) is connected with the other end of the other end of second inductance (L2), second power resistor (R2) and the negative pole end of second electric capacity (C2); The input side of described contravariant transformer (T1) is connected with the side a and b of inverter bridge (BD2) outlet side respectively, and outlet side is connected with the side a and b of rectifier bridge (BD3) input side respectively; The cathode output end of described rectifier bridge (BD3) is connected with an end of the 3rd electric capacity (C3) and the positive pole of load (ZL), and cathode output end is connected with the other end of the 3rd electric capacity (C3) and the negative pole of load (ZL).
2. the high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern according to claim 1 is characterized in that, the switching component of described three-phase phase control rectifier bridge (BD1) adopts turn-off thyristor.
3. the high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern according to claim 1 is characterized in that, the switching component of described inverter bridge (BD2) adopts insulated gate bipolar transistor or field-effect transistor.
4. the high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern according to claim 1 is characterized in that, the switching component of described rectifier bridge (BD3) adopts high voltage silicon stack.
5. the high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern according to claim 1 is characterized in that, described first inductance (L1) constitutes low pass filter with first electric capacity (C1).
6. the high-frequency high-voltage direct-current Switching Power Supply based on the current source pattern according to claim 1; it is characterized in that described first power resistor (R1) and diode (D1) and second power resistor (R2) are connected in proper order with the circuit unit of second electric capacity (C2) parallel connection and constituted inductance open circuit afterflow protective circuit unit.
7. according to each described high-frequency high-voltage direct-current Switching Power Supply of claim 1 to 6, it is characterized in that the G end of described three-phase phase control rectifier bridge (BD1) is connected with first pulse control circuit (CU1) based on the current source pattern.
8. according to each described high-frequency high-voltage direct-current Switching Power Supply of claim 1 to 6, it is characterized in that the G end of described inverter bridge (BD2) is connected with second pulse control circuit (CU2) based on the current source pattern.
CN201110098162XA 2011-04-19 2011-04-19 High-frequency high-voltage DC switching power source based on current source mode CN102148571A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103138247A (en) * 2011-12-05 2013-06-05 哈尔滨固泰电子有限责任公司 Electronic switch protective circuit
CN103176069A (en) * 2011-12-23 2013-06-26 特变电工沈阳变压器集团有限公司 Test method for applying DC (Direct Current) magnetic bias current of transformer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07150348A (en) * 1993-11-26 1995-06-13 Shindengen Electric Mfg Co Ltd Power source for sputtering
CN201656763U (en) * 2010-03-26 2010-11-24 深圳市大族激光科技股份有限公司 Pfc circuit
CN101954313A (en) * 2010-09-08 2011-01-26 上海理工大学 High-frequency high-voltage switching power supply for electric precipitation
CN202026242U (en) * 2011-04-19 2011-11-02 济南卓信智能科技有限公司 High-frequency and high-voltage direct-current switching power supply based on current source mode

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07150348A (en) * 1993-11-26 1995-06-13 Shindengen Electric Mfg Co Ltd Power source for sputtering
CN201656763U (en) * 2010-03-26 2010-11-24 深圳市大族激光科技股份有限公司 Pfc circuit
CN101954313A (en) * 2010-09-08 2011-01-26 上海理工大学 High-frequency high-voltage switching power supply for electric precipitation
CN202026242U (en) * 2011-04-19 2011-11-02 济南卓信智能科技有限公司 High-frequency and high-voltage direct-current switching power supply based on current source mode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103138247A (en) * 2011-12-05 2013-06-05 哈尔滨固泰电子有限责任公司 Electronic switch protective circuit
CN103138247B (en) * 2011-12-05 2017-02-22 哈尔滨固泰电子有限责任公司 Electronic switch protective circuit
CN103176069A (en) * 2011-12-23 2013-06-26 特变电工沈阳变压器集团有限公司 Test method for applying DC (Direct Current) magnetic bias current of transformer

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