WO2008089867A1 - Entlastungsschaltung - Google Patents
Entlastungsschaltung Download PDFInfo
- Publication number
- WO2008089867A1 WO2008089867A1 PCT/EP2007/063485 EP2007063485W WO2008089867A1 WO 2008089867 A1 WO2008089867 A1 WO 2008089867A1 EP 2007063485 W EP2007063485 W EP 2007063485W WO 2008089867 A1 WO2008089867 A1 WO 2008089867A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diode
- capacitor
- circuit
- circuit arrangement
- voltage
- Prior art date
Links
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
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
-
- 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
-
- 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 invention relates to a circuit arrangement for limiting voltage overshoots by the forward delay time of a diode, which is switched by switching a switching element alternately in the reverse direction and the forward direction, according to the preamble of claim 1.
- the diode when changing from the reverse direction to the forward direction, it takes a certain amount of time to distribute the charge carriers over the entire cross-section of the space charge zone and to "flood" them with charge carriers, as is the case with high currents through the
- the diode if the diode is an inductive relief diode, then the diode will not conduct at the forward voltage, which is important for slow switching operations, but rather at higher voltages, this higher forward voltage
- this is referred to as voltage overshoot, in which case the voltage overshoot is a function of the current slew rate (usually indicated in A / ⁇ s) and can be found in the corresponding data sheets for the respective diode.
- Claim 1 relates to a circuit arrangement for limiting voltage overshoots by the forward delay time of a first diode, which is switched by switching a switching element alternately in the reverse direction and forward direction.
- the first diode is connected in series with a first capacitor, and a precharging circuit is provided for the first capacitor, which charges the first capacitor while the first diode is switched in the reverse direction.
- the precharge on the first capacitor and the associated voltage causes the first diode to begin to conduct this voltage earlier.
- the voltage overshoot is thus reduced. If according to claim 2, this voltage value exceeds the voltage overshoot of the first diode, the voltage overshoot can be completely avoided.
- the first diode may be connected on the anode side with the first capacitor in series.
- the precharge circuit comprises a second capacitor connected in parallel with the first diode as well as a third diode, wherein the third diode is connected on the anode side to the second capacitor, and on the cathode side to the side of the first capacitor facing the first diode is.
- the first diode but also be connected on the cathode side with the first capacitor in series.
- a Vorladeschal- tion can be realized approximately by the fact that the precharge circuit comprises a parallel to the first diode connected second capacitor, and a third diode, wherein the third diode on the cathode side connected to the second capacitor, and on the anode side with the first diode side facing the first capacitor is.
- Claim 7 provides that the first capacitor is connected in parallel to a second diode, which is connected in rectification with the first diode.
- the second diode takes over the current flowing through the first capacitor current as soon as it becomes conductive with respect to the state of charge of the first capacitor.
- switched to rectified means that the two diodes are switched in the same current direction either both in the reverse direction, or both in the forward direction.
- Claim 8 provides a preferred application of the inventive switching arrangement, namely in transformer circuits, as they occur in inverters or switching power supplies.
- Claim 8 proposes that the switching element on the primary side of a transformer circuit is connected in series with the primary winding of a transformer, and primary winding and switching element are connected to a DC voltage source, wherein the first diode is connected as a relief diode for the primary winding.
- Claim 9 finally relates to a switching power supply with a circuit arrangement according to one of claims 1 to 8.
- Fig. 1 shows a first circuit example of the circuit arrangement according to the invention
- Fig. 2 shows another embodiment of the circuit arrangement according to the invention.
- FIG. 1 shows a circuit arrangement with a switching element Sl, which is usually a semiconductor switch, in particular a circuit breaker acts.
- the switching element Sl is switched in the embodiment shown on the primary side of a transformer circuit in series with the primary winding Wl of a transformer T, and the primary winding Wl and switching element Sl is connected to a DC voltage source U. 3
- the DC voltage of the DC voltage source U 3 is converted into voltage pulses, which is translated via the transformer T to the secondary side of the transformer circuit.
- FIG. 1 further shows that a first diode D1 is connected as a relief diode for the primary winding W1.
- the first diode Dl is switched in the reverse direction with respect to the DC voltage source U 3 . If the switching element Sl is open, current flows through the intermediate circuit of the first diode Dl, so that the first diode Dl is switched alternately in the reverse direction and forward direction depending on the switching state of the switching element Sl.
- the first diode D 1 In order to limit excess voltages due to the forward delay time of the first diode D 1, according to the invention it is connected in series on the anode side with a first capacitor C 1. Furthermore, a precharging circuit is provided for the first capacitor Cl, which positively charges the side of the first capacitor Cl facing the first diode D1, while the first diode D1 is switched in the reverse direction. The first capacitor Cl is further connected in parallel with a second diode D2 connected in rectification with the first diode Dl. In the exemplary embodiment of FIG.
- the precharging circuit comprises a second capacitor C2 connected in parallel with the first diode D1 and a third diode D3, the third diode D3 on the anode side with the second capacitor C2, and on the cathode side with that of the first diode D1 Side of the first capacitor Cl is connected.
- first diode D1 and second capacitor C2 is connected in series with a parallel connection of a third capacitor C3 and a Zener diode.
- These switching elements are merely optional and merely illustrate one way of constructing a counter-DC voltage to protect the switching element S1, which protects the switching element S1, but does not disturb the normal operation of the transformer T.
- FIG. 2 shows a circuit arrangement in which a further switching element S1 'is connected in series with the primary winding W1. Both switching elements Sl, Sl 'is assigned in each case an intermediate circuit with the discharge diodes Dl and Dl'.
- the circuit arrangement according to the invention is used, but in the form of two different embodiments, namely with an anode-side arrangement of the first capacitor Cl with respect to the first diode Dl, and with a cathode-side arrangement of the first capacitor Cl' with respect to the first diode Dl '.
- the precharge circuit accordingly comprises a second capacitor C2 'connected in parallel with the first diode D1', and a third diode D3 ', the third diode D3' being connected to the second capacitor D3 'on the cathode side. tor C2 ', and on the anode side with the first diode Dl' facing side of the first capacitor Cl 'is connected.
- circuit states of the circuit arrangement according to the invention can be divided into four phases, and are explained with reference to FIG. 1.
- a first phase the switching element Sl is closed, and the first diode Dl is connected in the reverse direction.
- the first capacitor C1 is precharged via the precharging circuit consisting of the second capacitor C2 and the third diode D3 with a voltage which is advantageously a fraction of the blocking voltage at the first diode D1.
- the side of the first capacitor Cl facing the first diode D1 is positively charged.
- the switching element S2 is opened, and the voltage at the switching element Sl is positive until the sum of the voltage at the switching element Sl and that at the first capacitor Cl is positive than the sum of the voltages U E and U z (see Fig. 1).
- the first diode Dl is now conducting, and there is the voltage overshoot described above. With suitable dimensioning, this voltage overshoot is less than the voltage at the first capacitor C1, so that the voltage at the switching element S1 in this phase always remains below the sum of the voltages U E and U z .
- the potential at the anode of the first diode D1 is only one diode threshold above the potential at its cathode.
- the third phase ends after the voltage at the first capacitor Cl becomes negative and the second diode D2 becomes conductive.
- the second diode D2 takes over the current that has previously flowed through the first capacitor Cl.
- the voltage at the switching element Sl is now the sum of the voltages U E and U z and two diode thresholds.
- the voltage overshoots are limited due to the forward delay time at the first diode Dl using the circuit arrangement according to the invention, which is particularly advantageous for very fast switching operations.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
- Emergency Protection Circuit Devices (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07857282A EP2104977A1 (de) | 2007-01-23 | 2007-12-07 | Entlastungsschaltung |
US12/524,067 US8102684B2 (en) | 2007-01-23 | 2007-12-07 | Relief circuit |
CN2007800503511A CN101595629B (zh) | 2007-01-23 | 2007-12-07 | 放电电路 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA110/2007 | 2007-01-23 | ||
AT0011007A AT503964B1 (de) | 2007-01-23 | 2007-01-23 | Schaltungsanordnung zur begrenzung von spannungsüberhöhungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008089867A1 true WO2008089867A1 (de) | 2008-07-31 |
Family
ID=39032469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/063485 WO2008089867A1 (de) | 2007-01-23 | 2007-12-07 | Entlastungsschaltung |
Country Status (7)
Country | Link |
---|---|
US (1) | US8102684B2 (de) |
EP (1) | EP2104977A1 (de) |
KR (1) | KR20090102864A (de) |
CN (1) | CN101595629B (de) |
AT (1) | AT503964B1 (de) |
RU (1) | RU2432661C2 (de) |
WO (1) | WO2008089867A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017196254A1 (en) * | 2016-05-12 | 2017-11-16 | Robert Bosch Gmbh | Battery disconnect circuits and methods for controlling a battery disconnect circuit |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2026434A1 (de) * | 1970-05-29 | 1971-12-09 | Siemens Ag | Schaltungsanordnung fur Fernmelde anlagen mit Dioden zur Absorption von Induktionsspannungen |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3182258A (en) * | 1961-10-23 | 1965-05-04 | Gen Dynamics Corp | Test method for measuring the forward dynamic time constant of diodes |
US3913036A (en) * | 1974-08-16 | 1975-10-14 | Victor Comptometer Corp | High-power, high frequency saturable core multivibrator power supply |
US4017784A (en) * | 1976-05-17 | 1977-04-12 | Litton Systems, Inc. | DC to DC converter |
US4403269A (en) * | 1982-03-05 | 1983-09-06 | International Business Machines Corporation | Non-dissipative snubber circuit apparatus |
US4639849A (en) * | 1985-05-08 | 1987-01-27 | International Exide Electronics/Corporation | Snubber circuit for H.F. bridge converter |
SU1330713A1 (ru) | 1985-11-04 | 1987-08-15 | Опытное производственно-техническое предприятие "Уралчерметавтоматика" | Преобразователь посто нного напр жени |
KR0149840B1 (ko) | 1989-11-29 | 1998-10-01 | 빈센트 죠셉 로너 | 고속 댐퍼 다이오드 및 방법 |
US5636114A (en) * | 1995-11-30 | 1997-06-03 | Electronic Measurements, Inc. | Lossless snubber circuit for use in power converters |
US5838524A (en) * | 1997-03-21 | 1998-11-17 | Cherry Semiconductor Corporation | Current limit circuit for inhibiting voltage overshoot |
US6597750B1 (en) * | 1998-06-19 | 2003-07-22 | Thomson Licensing S.A. | Opposite polarization interference cancellation in satellite communication |
US6055161A (en) * | 1999-04-12 | 2000-04-25 | Lincoln Global, Inc. | Switching type power supply for arc welding |
DE10056833C2 (de) | 1999-11-24 | 2003-03-20 | Int Rectifier Corp | Integrierte Treiberschaltung für Halbbrückenschaltung mit zwei Leistungstransistoren |
ATE349098T1 (de) * | 2000-10-17 | 2007-01-15 | Omron Tateisi Electronics Co | Dämpferschaltung und leistungswandler der diese anwendet |
KR100896139B1 (ko) * | 2001-08-13 | 2009-05-12 | 인덕토썸코오퍼레이션. | 고장 내성 전력 공급 장치 |
CN1144344C (zh) | 2002-04-17 | 2004-03-31 | 艾默生网络能源有限公司 | 升压变换器 |
-
2007
- 2007-01-23 AT AT0011007A patent/AT503964B1/de not_active IP Right Cessation
- 2007-12-07 RU RU2009131691/07A patent/RU2432661C2/ru not_active IP Right Cessation
- 2007-12-07 US US12/524,067 patent/US8102684B2/en not_active Expired - Fee Related
- 2007-12-07 CN CN2007800503511A patent/CN101595629B/zh not_active Expired - Fee Related
- 2007-12-07 WO PCT/EP2007/063485 patent/WO2008089867A1/de active Application Filing
- 2007-12-07 KR KR1020097017477A patent/KR20090102864A/ko not_active Application Discontinuation
- 2007-12-07 EP EP07857282A patent/EP2104977A1/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2026434A1 (de) * | 1970-05-29 | 1971-12-09 | Siemens Ag | Schaltungsanordnung fur Fernmelde anlagen mit Dioden zur Absorption von Induktionsspannungen |
Also Published As
Publication number | Publication date |
---|---|
RU2009131691A (ru) | 2011-02-27 |
CN101595629B (zh) | 2012-06-20 |
US8102684B2 (en) | 2012-01-24 |
AT503964B1 (de) | 2008-02-15 |
RU2432661C2 (ru) | 2011-10-27 |
CN101595629A (zh) | 2009-12-02 |
EP2104977A1 (de) | 2009-09-30 |
KR20090102864A (ko) | 2009-09-30 |
AT503964A4 (de) | 2008-02-15 |
US20100103706A1 (en) | 2010-04-29 |
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