EP2308161A1 - Circuit d'amortissement actif pour un circuit electrique de decoupage - Google Patents

Circuit d'amortissement actif pour un circuit electrique de decoupage

Info

Publication number
EP2308161A1
EP2308161A1 EP09772662A EP09772662A EP2308161A1 EP 2308161 A1 EP2308161 A1 EP 2308161A1 EP 09772662 A EP09772662 A EP 09772662A EP 09772662 A EP09772662 A EP 09772662A EP 2308161 A1 EP2308161 A1 EP 2308161A1
Authority
EP
European Patent Office
Prior art keywords
line
capacitive element
circuit
diode
transistor
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09772662A
Other languages
German (de)
English (en)
French (fr)
Inventor
Pascal Nauroy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Electronics and Defense SAS
Original Assignee
Sagem Defense Securite SA
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 Sagem Defense Securite SA filed Critical Sagem Defense Securite SA
Publication of EP2308161A1 publication Critical patent/EP2308161A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • H02M1/34Snubber circuits
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/0814Modifications 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
    • H03K17/08148Modifications 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • H02M1/34Snubber circuits
    • H02M1/342Active non-dissipative snubbers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10Technologies 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 damping circuit (commonly referred to as "snubber") for a chopper circuit such as those used in inverters for supplying electrical energy to electronic equipment.
  • a damping circuit commonly referred to as "snubber”
  • chopper circuit such as those used in inverters for supplying electrical energy to electronic equipment.
  • An inverter generally comprises a switching circuit comprising pairs of switching transistors which are connected to one another in series. These pairs of switching transistors are connected in parallel to a first line and a second line. The first line is at a supply potential and the second line is grounded.
  • Such inverters are subject to thermal stresses and subject to rapid overvoltages and voltage variations which stress the components.
  • a damping circuit comprising a capacitive element and a charging diode of the capacitive element which are connected to one another in series and which are connected in parallel with one of the switching transistors of each pair of switching transistors.
  • the damping circuit further comprises a resistor having a first end connected to a connection point located between the charge diode and the capacitive element and a second end connected to the first line.
  • An object of the invention is to provide a means for improving the performance of chopper circuits equipped with damping circuits.
  • a damping circuit for a switching circuit comprising at least one switching transistor having terminals connected to a first line and to a second line, the first line being at a potential of power supply and the second line being grounded, the damping circuit comprising a capacitive element and a charging diode of the capacitive element which are connected to one another in series and which are connected in parallel with the transistor cutting.
  • the damping circuit comprises an inductive element having a first end connected to a connection point located between the charging diode and the capacitive element and a second end connected to one of the lines.
  • the energy stored in the capacitive element is reinjected into the first line via the inductive element. This makes it possible to reduce the energy losses generated by the switching of the switching transistor in its off state.
  • the damping circuit comprises a driving transistor which is connected to the second end of the inductive element and to the other of the lines and which has a conductive state for charging the inductive element and a blocked state for discharging the inductive element.
  • the control transistor makes it possible to control the restitution of the energy recovered to the first line.
  • the driving transistor is controlled to move from its conducting state to its locked state before a complete charging of the inductive element and, preferably, the driving transistor is controlled to go from its conducting state to its off state when the voltage in the capacitive element reaches approximately half of the supply potential.
  • the discharge of the capacitive element is accelerated by a driving effect decreasing the transfer time, which makes it possible to increase the switching frequency.
  • the current in the inductive element is also limited.
  • a protection transistor is connected in series between the charge diode and the capacitive element.
  • the protective transistor makes it possible to avoid the accidental passage of the power supply energy into the inductive element.
  • a diode is connected in parallel with the capacitive element between the first end of the inductive element and the second line.
  • This diode makes it possible to avoid recharging the capacitive element by the energy coming from the inductive element at the end of the transfer of energy between the inductive element and the supply line.
  • FIG. 1 is a diagrammatic view of part of a cutting circuit equipped with a damping circuit according to a first embodiment of the invention
  • FIG. 2 is a partial view of a variant of FIG. realization of the damping circuit
  • FIG. 3 is a view similar to FIG. 1 of a cutting circuit equipped with a damping circuit according to a second embodiment of the invention
  • FIG. 4 is a view similar to Figure 2 of an alternative embodiment of this damping circuit.
  • the invention is here described in application to an inverter connected in known manner to a distribution network of a current supplied by an alternator connected to a motor.
  • the inverter comprises a supply line 1 at a supply potential V O nd and a ground line 2 (at a potential 0 volts) between which is mounted a cutting circuit known per se.
  • the switching circuit comprises pairs of two switching transistors 3, 4 which are connected in series with each other.
  • the pairs of switching transistors 3, 4 (only one of which is shown here) are connected in parallel with the supply line 1 and the ground line 2.
  • the switching transistors 3, 4 are of the IGBT type English "Insulated Gate Bipolar Transistor", insulated gate bipolar transistor) and have a gate connected to a sequencer type control circuit.
  • the switching circuit is associated with a damping circuit comprising a capacitive element 7 connected in series with a charging diode 6 of the capacitive element 7.
  • the charging diode 6 and the capacitive element 7 are connected in parallel with the switching transistor 4. More precisely, the charging diode 6 is connected to the connection point of the switching transistors 3 and 4, and the capacitive element 7 is connected to the ground.
  • the damping circuit comprises a boost line connected, on the one hand, to the point of connection of the charging diode 6 and the capacitive element 7 and, on the other hand, to the supply line 1.
  • the booster line comprises in series an inductive element 8 having a first end connected to the connection point of the capacitive element 7 and the load diode 6 and a second end connected to a diode 9 itself connected to a diode 10 connected to the supply line 1.
  • a driving transistor 11 is connected, on the one hand, to the boost line, between the diodes 9 and 10, and, on the other hand, to the ground line 2 to extend in parallel with the capacitive element 7.
  • the driving transistor 11 is a field effect transistor of the MOSFET type whose gate is connected to the control circuit 5.
  • the capacitive element 7 recovers the energy associated with switching the switching transistor 4 from its conducting state to its off state and maintains a substantially zero voltage across its terminals at the moment of switching. The capacitive element 7 thus facilitates switching of the switching transistor 4 from its conducting state to its off state.
  • the charging diode 6 provides the unidirectional charging of the capacitive element 7.
  • the switching transistor 4 When the switching transistor 4 is returned to its conductive state, and the control transistor 11 is brought into its conducting state, the energy is transferred from the capacitive element 7 to the undue element. This energy transfer makes it possible to initiate a current in the inductive element 8 so as to initiate the boost mode when the driving transistor 11 is brought to its off state.
  • the transfer of the energy is done via the inductive element 8, the charge diode 6, the diode 9 and the diode 10.
  • the current in the inductive element 8 describes a discharge line.
  • the transfer of the energy is done via a resonant system formed of the capacitive element 7 and the inductive element 8 and via the charging diode 6, the diode 9 and the diode 10.
  • the driving transistor 11 is brought into its blocking state when the voltage in the capacitive element 7 reaches about half of the supply voltage.
  • the inductive element 8 ensures the transfer of energy from the capacitive element 7 to the supply line 1, after the switching transistor 4 has been switched from its off state to its conducting state.
  • the diode 9 prevents the current reversal in the inductive element 8, and therefore the recharging of the capacitive element 7, at the end of transfer of the energy of the inductive element 8 to the supply line 1.
  • a protective transistor 12 is connected between the charging diode 6 and the capacitive element 7 and is controlled by the control circuit 5 to prevent deterioration of the components of the circuit if the driving transistor 11 is brought into its conductive state while the switching transistor 4 is in its off state (transfer of the energy from the supply line 1 to the driving transistor 11 via the charging diode 6, the inductive element 8 and the diodes 9, 10).
  • a diode 13 is connected in parallel with the capacitive element 7 between the first end of the inductive element 8 and the ground line 2.
  • FIG. 3 representing a second embodiment.
  • the damping circuit is connected to the power supply line 1 and is arranged in parallel with the switching transistor 3 instead of being connected to the ground line 2 and arranged in parallel with the switching transistor. 4 as shown in FIG.
  • the damping circuit comprises a capacitive element 7 connected in series with a charging diode 6 of the capacitive element 7.
  • the charging diode 6 and the capacitive element 7 are connected in parallel with the switching transistor 3. More precisely, the charging diode 6 is connected to the connection point of the switching transistors 3 and 4, and the capacitive element 7 is connected to it at the supply line 1.
  • the damping circuit comprises a boost line connected, on the one hand, to the point of connection of the charge diode 6 and the capacitive element 7 and, on the other hand, to the ground line 2.
  • the line boost comprises in series an inductive element 8 having a first end connected to the connection point of the capacitive element 7 and the load diode 6 and a second end connected to a diode 9 itself connected to a diode 10 connected to the mass line 2.
  • a driving transistor 11 is connected, on the one hand, to the boost line, between the diodes 9 and 10, and, on the other hand, to the supply line 1 to extend in parallel with the element capacitive 7.
  • a protection transistor 12 is mounted between the charging diode 6 and the capacitive element 7 and is controlled by the control circuit 5 to prevent deterioration of the components of the circuit if the driving transistor 11 is brought into its conductive state while the switching transistor 3 is in its off state (transfer of the energy from the supply line 1 to the driving transistor 11 via the diode of load 6, the inductive element 8 and the diodes 9, 10).
  • a diode 13 is connected in parallel with the capacitive element 7 between the first end of the inductive element 8 and the supply line 1.
  • the damping circuit may have a different structure from that described and in particular be devoid of driving transistor or diodes. If the inverter is connected to a three-phase alternating current source, it comprises three pairs of transistors or two pairs of transistors if it is connected to a two-phase current source (only one transistor pair has been shown here for clarity). diagrams).
  • Transistors 11, 12 and diodes 9, 10, 13 are optional.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electronic Switches (AREA)
  • Power Conversion In General (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)
EP09772662A 2008-07-03 2009-06-30 Circuit d'amortissement actif pour un circuit electrique de decoupage Withdrawn EP2308161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0803789A FR2933545B1 (fr) 2008-07-03 2008-07-03 Circuit d'amortissement actif pour circuit electrique de decoupage
PCT/FR2009/000804 WO2010000979A1 (fr) 2008-07-03 2009-06-30 Circuit d'amortissement actif pour un circuit electrique de decoupage

Publications (1)

Publication Number Publication Date
EP2308161A1 true EP2308161A1 (fr) 2011-04-13

Family

ID=40404981

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09772662A Withdrawn EP2308161A1 (fr) 2008-07-03 2009-06-30 Circuit d'amortissement actif pour un circuit electrique de decoupage

Country Status (8)

Country Link
US (1) US8604860B2 (zh)
EP (1) EP2308161A1 (zh)
CN (1) CN102084580B (zh)
BR (1) BRPI0914705A2 (zh)
CA (1) CA2729177C (zh)
FR (1) FR2933545B1 (zh)
RU (1) RU2467458C2 (zh)
WO (1) WO2010000979A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7101334B2 (ja) * 2018-07-10 2022-07-15 日新電機株式会社 スナバ回路

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4363067A (en) * 1980-06-09 1982-12-07 General Motors Corporation Transistor chopper protection circuit
SU989711A1 (ru) * 1981-03-30 1983-01-15 Всесоюзный Ордена Ленина И Ордена Октябрьской Революции Электротехнический Институт Им.В.И.Ленина Транзисторный инвертор
US4438486A (en) * 1982-02-22 1984-03-20 General Electric Company Low loss snubber for power converters
US4542440A (en) * 1983-11-02 1985-09-17 Sundstrand Corporation Switch current sensing with snubber current suppression in a push-pull converter
US4899270A (en) * 1989-03-14 1990-02-06 Statpower Technologies Corp. DC-to-DC power supply including an energy transferring snubber circuit
US4937725A (en) * 1989-06-19 1990-06-26 Sundstrand Corporation Circuit for eliminating snubber current noise in the sense circuit of an H-bridge inverter
US5636114A (en) * 1995-11-30 1997-06-03 Electronic Measurements, Inc. Lossless snubber circuit for use in power converters
US5828559A (en) * 1997-02-03 1998-10-27 Chen; Keming Soft switching active snubber
US6166500A (en) * 1997-07-18 2000-12-26 Siemens Canada Limited Actively controlled regenerative snubber for unipolar brushless DC motors
DE10020137A1 (de) * 2000-04-14 2001-10-25 Daimler Chrysler Ag Verfahren und Schaltung zur Rückspeisung der in einer Stromrichterbeschaltung anfallenden elektrischen Energie
DE10060766A1 (de) * 2000-12-07 2002-06-13 Daimlerchrysler Rail Systems Schaltentlastungsnetzwerk für Leistungshalbleiterschalter
US7233507B2 (en) * 2005-05-18 2007-06-19 Optimum Power Conversion, Inc. Non dissipative snubber circuit with saturable reactor
US8107268B2 (en) * 2009-09-09 2012-01-31 City University Of Hong Kong Passive lossless snubber cell for a power converter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010000979A1 *

Also Published As

Publication number Publication date
US8604860B2 (en) 2013-12-10
WO2010000979A1 (fr) 2010-01-07
CN102084580A (zh) 2011-06-01
FR2933545A1 (fr) 2010-01-08
FR2933545B1 (fr) 2011-08-05
RU2011103737A (ru) 2012-09-10
RU2467458C2 (ru) 2012-11-20
BRPI0914705A2 (pt) 2015-10-20
CA2729177C (fr) 2015-06-16
CN102084580B (zh) 2014-04-23
CA2729177A1 (fr) 2010-01-07
US20110109282A1 (en) 2011-05-12

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