WO2006024198A1 - Circuit limitateur pour circuit de commutation avec reinjection d'energie et blocage basse tension - Google Patents

Circuit limitateur pour circuit de commutation avec reinjection d'energie et blocage basse tension Download PDF

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Publication number
WO2006024198A1
WO2006024198A1 PCT/CN2004/001018 CN2004001018W WO2006024198A1 WO 2006024198 A1 WO2006024198 A1 WO 2006024198A1 CN 2004001018 W CN2004001018 W CN 2004001018W WO 2006024198 A1 WO2006024198 A1 WO 2006024198A1
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WO
WIPO (PCT)
Prior art keywords
switching element
diode
circuit
switching
switch
Prior art date
Application number
PCT/CN2004/001018
Other languages
English (en)
Chinese (zh)
Inventor
Jie Cao
Original Assignee
Jie Cao
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jie Cao filed Critical Jie Cao
Priority to PCT/CN2004/001018 priority Critical patent/WO2006024198A1/fr
Publication of WO2006024198A1 publication Critical patent/WO2006024198A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
    • H03K17/08148—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in composite switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits
    • H02M1/346—Passive non-dissipative snubbers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/0036—Means reducing energy consumption
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the present invention relates to a switch snubber circuit and, more particularly, to a switch snubber circuit having energy feedback and low voltage turn-off.
  • Figure la is the switch circuit diagram It can be seen from Figure lb that when Q is turned off from the on state, high dv/dt and overvoltage are generated at both ends of the switch, when L (the sum of L s and L L ) and I in the circuit The larger the overvoltage, the higher the overvoltage generated. This is the reason why the overvoltage breakdown of the air occurs when the air switch is turned off in the power system we often see.
  • FIG. 2 shows a prior art charge and discharge type I GBT buffer absorption circuit.
  • the RCD absorption circuit is directly connected in parallel across the collector and emitter of the IGBT.
  • I GBT When I GBT is turned off, the voltage of the snubber capacitor C s rises from zero, which makes the current and voltage trajectory of the IGBT turn off close to the current and voltage coordinate axes, which improves the safety of the IGBT when it is turned off, and reduces its Switching loss.
  • the resistor R s needs to withstand the current of charging and discharging the capacitor C s from zero voltage, the power consumption thereof is large, and when the operating efficiency is high, the operating efficiency of the device is seriously affected. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a switch snubber circuit capable of absorbing energy during a switch-off process and returning energy during switching to a power source.
  • the present invention provides a switch snubber circuit for use in a switching circuit.
  • the snubber circuit includes a switching element; a first diode (v D1 ) is forwardly connected in series between one end of the switching element and a power supply; a third diode (V D3 ) is anti-parallel in the Between the other end of the switching element and the power supply, a path is provided for the inductive reverse current in the circuit; a second diode (V D2 ) and a capacitor (C) connected in series therewith are connected in parallel at the other end of the switching element Between the power sources, a charging path is formed; the switch buffer circuit further includes: an inverter transformer (TI) having one end of the primary winding connected to the second diode (V D2 ) and the capacitor (C) Between the other end is connected between the switching element and the first diode; a rectifier bridge (V D4 _ 7 ) whose pair of inputs are connected in parallel on the secondary winding of the in
  • the current in the loop is charged to the capacitor (C) through the second diode (V D2 ), which reduces the dv/dt turn-off;
  • the switching element is turned on, the charge stored in the capacitor (C) After passing through the primary winding of the inverter transformer (TI) and the first diode (V D1 ), then flowing through the switching element, and the discharge current is transformed by the transformer (TI) impedance, after the rectifier bridge (V D4 _ 7 ) After rectification, the electric field energy on the capacitor (C) is fed back to the DC power source.
  • the above switching element may be a mechanical electromagnetic switch.
  • the above switching element may be a semiconductor solid state switch.
  • the above switching element may be an IGBT.
  • the switch buffer structure of the present invention when the switching element is turned off, the current in the loop charges the capacitor, thereby absorbing the energy during the turn-off process, thereby achieving a low voltage turn-off on the switch; when the switching element is turned on, the capacitor After the primary line of the inverter transformer is discharged, the discharge current is transformed by the transformer impedance and rectified by the rectifier bridge, and the electric field energy on the capacitor is fed back to the DC power source.
  • This can significantly improve the operating state of the switch, eliminate the loss and electrical stress during turn-off, extend the life of the switch, and improve reliability.
  • energy feedback is achieved, making the circuit The conversion efficiency is significantly improved.
  • FIG. 1 is a schematic diagram of current and voltage waveforms on a switch of the prior art
  • Figure 3 is a switch buffer circuit in accordance with a first embodiment of the present invention.
  • FIG. 4 is a schematic diagram showing current and voltage waveforms on a switch and a capacitor when a switch is turned off in a switch snubber circuit according to a first embodiment of the present invention
  • Figure 5 is a switch snubber circuit in accordance with a second embodiment of the present invention.
  • V is a switching element
  • a first diode (V D1 ) is forwardly connected in series between one end of the switching element V and a power supply
  • a diode V D2 is connected in series with the capacitor C in parallel with the switching element
  • a third diode (V D 3 ) is connected in anti-parallel between the other end of the switching element and the power supply to provide a path for the inductive reverse current in the circuit
  • a diode (V D2 ) and a capacitor ( C ) connected in series therewith are connected in parallel between the other end of the switching element and a power source to form a charging path
  • the switching buffer circuit further includes: an inverter transformer (TI) One end of its primary coil is connected between the second diode (V D2 ) and the capacitor (C), and the other end is connected between the switching element and the first diode; a rectifier bridge (V D4 )
  • the blocking capacitor C is directly connected to the inductor l existing in the load and the distributed inductance L s in the circuit to prevent The current oscillation is formed; the main function of the diode V D 1 connected in series with the V-terminal of the switching element is to directly block the capacitor C, the direct connection between the inverter transformer TI and the inductors LL, L S to prevent oscillation from forming.
  • the freewheeling diode V D3 is connected in anti-parallel across the switching element V to provide a path for the inductive reverse current in the circuit.
  • the capacitance C of the inverter transformer TI stored energy through rectifier bridge v D4 is turned on when the V - u d return ends 7 after rectification.
  • the switch snubber circuit shown in Figure 5 is another embodiment of the present invention.
  • V D2 provides a charging path for C and prevents direct flow through V during discharge.
  • the freewheeling diode V D3 provides a path for the inductive reverse current in the circuit.
  • the inverter transformer TI returns the energy stored in C to the DC bus after rectification by the rectifier bridge V D4 _ 7 when V is turned on.
  • the working principle of this embodiment is the same as that of the previous embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Cette invention concerne un circuit limitateur pour circuit de commutation, qui comprend un élément de commutation; une diode VD1 en série entre l'extrémité de l'élément de commutation et l'alimentation dans le sens direct; une diode VD3 en parallèle entre l'autre extrémité de l'élément de commutation et l'alimentation en sens inverse et qui sert à conduire le courant inverse produit par l'inducteur; une diode VD2 en série avec un condensateur C et couplée à l'alimentation et à l'extrémité de l'élément de commutation, pour former un trajet de charge. Ce circuit limitateur comprend également un circuit de réinjection d'énergie, qui contient un transformateur TI, dont l'extrémité de l'enroulement primaire est connectée entre la diode VD2 et le condensateur C, et dont l'autre extrémité de l'enroulement primaire est connectée entre l'extrémité de l'élément de commutation et la diode VD1; l'entrée du redresseur de pont VD4-7 étant couplée à l'enroulement secondaire du transformateur en parallèle et la sortie étant couplée à l'alimentation en parallèle.
PCT/CN2004/001018 2004-09-03 2004-09-03 Circuit limitateur pour circuit de commutation avec reinjection d'energie et blocage basse tension WO2006024198A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2004/001018 WO2006024198A1 (fr) 2004-09-03 2004-09-03 Circuit limitateur pour circuit de commutation avec reinjection d'energie et blocage basse tension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2004/001018 WO2006024198A1 (fr) 2004-09-03 2004-09-03 Circuit limitateur pour circuit de commutation avec reinjection d'energie et blocage basse tension

Publications (1)

Publication Number Publication Date
WO2006024198A1 true WO2006024198A1 (fr) 2006-03-09

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PCT/CN2004/001018 WO2006024198A1 (fr) 2004-09-03 2004-09-03 Circuit limitateur pour circuit de commutation avec reinjection d'energie et blocage basse tension

Country Status (1)

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WO (1) WO2006024198A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3349357A1 (fr) * 2017-01-13 2018-07-18 Siemens Aktiengesellschaft Ensemble et procédé de commutation de puissance

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237064A (ja) * 1985-08-08 1987-02-18 Fuji Electric Co Ltd スナバエネルギ−回収回路
US5828559A (en) * 1997-02-03 1998-10-27 Chen; Keming Soft switching active snubber
CN1312614A (zh) * 2001-02-17 2001-09-12 福州大学 用附加耦合绕组软化电子开关过渡过程的技术
CN2462612Y (zh) * 2000-12-25 2001-11-28 福州大学 一种具有馈能特性的软性缓冲变换器
CN1355594A (zh) * 2000-11-28 2002-06-26 中国科学技术大学 软开关单端隔离直流/直流正激变换器

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237064A (ja) * 1985-08-08 1987-02-18 Fuji Electric Co Ltd スナバエネルギ−回収回路
US5828559A (en) * 1997-02-03 1998-10-27 Chen; Keming Soft switching active snubber
CN1355594A (zh) * 2000-11-28 2002-06-26 中国科学技术大学 软开关单端隔离直流/直流正激变换器
CN2462612Y (zh) * 2000-12-25 2001-11-28 福州大学 一种具有馈能特性的软性缓冲变换器
CN1312614A (zh) * 2001-02-17 2001-09-12 福州大学 用附加耦合绕组软化电子开关过渡过程的技术

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3349357A1 (fr) * 2017-01-13 2018-07-18 Siemens Aktiengesellschaft Ensemble et procédé de commutation de puissance
WO2018130558A1 (fr) * 2017-01-13 2018-07-19 Siemens Aktiengesellschaft Système et procédé d'alimentation électrique
CN110192343A (zh) * 2017-01-13 2019-08-30 西门子股份公司 供电系统和方法
US10727829B2 (en) 2017-01-13 2020-07-28 Siemens Aktiengesellschaft Power supply system and method
CN110192343B (zh) * 2017-01-13 2023-07-04 西门子能源有限责任公司 供电系统和方法

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