WO2004105206A1 - Verfahren und anordnung zur überwachung einer leistungsendstufe - Google Patents
Verfahren und anordnung zur überwachung einer leistungsendstufe Download PDFInfo
- Publication number
- WO2004105206A1 WO2004105206A1 PCT/EP2004/050666 EP2004050666W WO2004105206A1 WO 2004105206 A1 WO2004105206 A1 WO 2004105206A1 EP 2004050666 W EP2004050666 W EP 2004050666W WO 2004105206 A1 WO2004105206 A1 WO 2004105206A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pulse width
- power output
- semiconductor switches
- output
- output stage
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/0833—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors for electric motors with control arrangements
- H02H7/0844—Fail safe control, e.g. by comparing control signal and controlled current, isolating motor on commutation error
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
Definitions
- the invention relates to a method and an arrangement for monitoring a power output stage, the power output stage having at least one half bridge consisting of a series connection of two semiconductor switches and supplied with operating voltage, the semiconductor switches being controllable alternately in a conductive state and a non-conductive state by pulse-width-modulated pulses and wherein the connection point of the semiconductor switches of the at least one half bridge forms an output.
- DC or EC motors are used to generate the support, which are controlled via an H-bridge or a B6-bridge by applying pulse-width-modulated pulses to the half-bridges.
- the semiconductor switching elements usually OSFETs, are controlled by a control device (microcontroller or digital signal processor). Continuous monitoring of the effective voltages present at the output is required for fault detection.
- the object of the present invention is to reliably monitor a power output stage with as little effort as possible, so that errors which can lead in particular to a dangerous state are identified.
- the task is solved in the method according to the invention in that the respective pulse width of signals present at the output is compared with a respective target pulse width and that the power output stage is recognized as error-free if deviations do not go beyond a predetermined amount.
- One advantage of the invention is that the entire circuit can be monitored in a simple manner from the outputs of the control device via control circuits (driver modules) and semiconductor switches of the bridges. Since the monitoring does not require any integrating elements, which were required, for example, when measuring the mean value of the output voltages, the evaluation can be carried out quickly and with only small tolerance fields and thus with high accuracy. This in turn means increased security.
- the comparison is carried out in a processor which also generates the pulses to be supplied to the semiconductor switches.
- the target pulse width and the pulse width of the output signals are evaluated in several periods during the comparison.
- the comparison is made when the pulse widths are constant over a time required to measure the pulse width of the output signals.
- the computing effort for the comparison and evaluation can be placed in a time in which the other programs of the control device are less active.
- the comparison is made when the pulse widths change in a known manner over a time required to measure the pulse width of the output signals.
- the object is achieved in that the signal at the at least one output can be fed to an input of a comparison device which is designed to compare the pulse width of the signal with the pulse width of the pulses.
- the comparison device is part of a control device which generates the pulses which can be supplied to control inputs of the semiconductor switches via control circuits. This measure also increases the security of error detection.
- a level adjustment circuit is arranged.
- Figure 1 is a circuit diagram of an embodiment
- Figure 2 diagrams of signals in the embodiment of Figure 1 and
- FIG. 3 e circuit diagram of a further exemplary embodiment.
- two MOSFETs Hu, Lu; Hv, Lv; Hw, Lw each have a half bridge 7, 8, 9 with outputs 10, 11, 12, to which one of the windings 13, 14, 15 of a brushless, permanently excited synchronous motor is connected in star connection.
- the operating voltage ü is supplied to an input 16.
- the arrangement further comprises a control device 20, which is known as such in connection with power output stages, is formed by a microcomputer or a digital signal processor and as such does not need to be explained in more detail in order to understand the invention.
- Outputs of the control device 20 are connected to a control circuit 21, which generates control signals Au, Av, Aw for the MOSFETs Hu to Lw.
- the control device 20 also has inputs to which voltages generated by a voltage divider 23, 2, 4, 25 can be supplied.
- the voltage dividers have significantly higher resistance values than the windings 13,
- the pulses supplied to the control circuit 21 by the control device 20 are generally derived from clock pulses which have a significantly higher frequency than the repetition frequency of the control pulses.
- the control device is therefore also certain how many clock pulses the respective pulse is wide. If the number of clock pulses is paid from the leading edge to the trailing edge of the signal Su, Sv and Sw to be tested in the exemplary embodiment according to FIG. 1, this can easily be compared. Any tolerances caused by switching times of the control circuit 21 and the semiconductor switches will be taken into account.
- FIG. 2 shows the control of the semiconductor switches, which form the three phases u, V, W, in such a way that the respective upper semiconductor switch is conductive at a level H, while the lower semiconductor switch m is controlled at a level L, the conductive state.
- the three signals Su, Sv and Sw are shown schematically. Three periods are shown in each case, the duration of which is, for example, 50 as, which corresponds to a frequency of 20 kHz. Since this frequency is substantially greater than that of the rotating field, the width modulation forming the rotating field cannot be seen from FIG. 2. 2 represents a snapshot, so to speak, in which the interval of level H is greatest in phase U and smallest in phase W, while the interval of level L is smallest in phase U and in phase W is greatest.
- the pulse widths Au, Su, Av, Sv, Aw, Sw are essentially the same.
- Deviations including a complete failure of an impulse, are interpreted as a defect.
- a separate comparison device 28 is provided, which, as in the first exemplary embodiment, is supplied with the output signals Su, Sv and Sw via voltage dividers and, on the other hand, with control signals generated by the control device.
- the comparison device 28 for example a hard-wired circuit or a programmable device, such as a microprocessor.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Control Of Voltage And Current In General (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Protection Of Static Devices (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006508300A JP2006526381A (ja) | 2003-05-23 | 2004-04-30 | 電力出力段の監視方法および監視装置 |
EP04730554A EP1627456A1 (de) | 2003-05-23 | 2004-04-30 | Verfahren und anordnung zur überwachung einer leistungsendstufe |
US10/558,147 US7514891B2 (en) | 2003-05-23 | 2004-04-30 | Method and arrangement for monitoring a power output stage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10323908.1 | 2003-05-23 | ||
DE10323908A DE10323908A1 (de) | 2003-05-23 | 2003-05-23 | Verfahren und Anordnung zur Überwachung einer Leistungsendstufe |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004105206A1 true WO2004105206A1 (de) | 2004-12-02 |
WO2004105206A8 WO2004105206A8 (de) | 2005-01-20 |
Family
ID=33461891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/050666 WO2004105206A1 (de) | 2003-05-23 | 2004-04-30 | Verfahren und anordnung zur überwachung einer leistungsendstufe |
Country Status (6)
Country | Link |
---|---|
US (1) | US7514891B2 (de) |
EP (1) | EP1627456A1 (de) |
JP (1) | JP2006526381A (de) |
CN (1) | CN100583585C (de) |
DE (1) | DE10323908A1 (de) |
WO (1) | WO2004105206A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006136507A2 (de) * | 2005-06-20 | 2006-12-28 | Siemens Vdo Automotive Ag | Verfahren und anordnung zur überwachung von signalen |
WO2010112389A1 (de) * | 2009-04-01 | 2010-10-07 | Continental Automotive Gmbh | Schaltung für einen bürstenlosen motor und verfahren zu deren betrieb |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4338721B2 (ja) * | 2006-08-22 | 2009-10-07 | 株式会社日立製作所 | 電力変換装置及びその異常検出方法 |
DE102007057990B3 (de) | 2007-12-03 | 2009-04-16 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Verfahren und Schaltungsanordnung zur Überwachung von durch elektrische Impulse angesteuerten Geräten |
DE102009028502A1 (de) * | 2009-08-13 | 2011-02-17 | Robert Bosch Gmbh | Verfahren zum Überwachen eines Antriebszustands eines Elektromotors |
GB201103224D0 (en) * | 2011-02-24 | 2011-04-13 | Cummins Generator Technologies | Protection circuitry for an electrical generator |
DE102012223877A1 (de) * | 2012-12-20 | 2014-06-26 | Robert Bosch Gmbh | Verfahren zum Überwachen eines Halbbrückenzweiges in einer Halbbrücke |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5721474A (en) * | 1995-08-11 | 1998-02-24 | Samsung Electronics Co., Ltd. | Method and apparatus for preventing excessive current flow in a motor |
US6153993A (en) * | 1994-06-14 | 2000-11-28 | Kabushiki Kaisha Toshiba | Method and apparatus for controlling a brushless DC motor that indicates a motor failure |
US20020074962A1 (en) * | 2000-08-24 | 2002-06-20 | Berger Lahr Gmbh & Co. Kg | Electric device as well as process for its operation |
US20020105239A1 (en) * | 2000-03-01 | 2002-08-08 | Harald Witzig | Fail-safe mechanism for dc-drive |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5835608A (ja) * | 1981-08-26 | 1983-03-02 | Hitachi Ltd | 故障検出回路 |
JPH07118944B2 (ja) * | 1986-03-17 | 1995-12-18 | 株式会社日立製作所 | ブラシレス直流モ−タ |
JP2503230B2 (ja) * | 1987-06-17 | 1996-06-05 | 松下電器産業株式会社 | ブラシレスモ−タの駆動装置 |
JPH02111220A (ja) * | 1988-10-19 | 1990-04-24 | Hitachi Ltd | ブラシレス直流モータの保護装置 |
JPH0866081A (ja) | 1994-06-14 | 1996-03-08 | Toshiba Corp | 無整流子電動機の制御装置および異常検出方法並びに空気調和機 |
JPH11122941A (ja) * | 1997-10-16 | 1999-04-30 | Fuji Electric Co Ltd | インバータ装置のアーム短絡検出方法 |
DE69914242T2 (de) * | 1998-03-23 | 2004-11-04 | Hitachi, Ltd. | Steuervorrichtung für einen bürstenlosen Motor und Maschine mit bürstenlosem Motor |
JP3476067B2 (ja) * | 1999-08-09 | 2003-12-10 | シャープ株式会社 | モータの制御装置 |
US6344720B1 (en) * | 1999-10-28 | 2002-02-05 | International Business Machines Corporation | Current mode PWM technique for a brushless motor |
-
2003
- 2003-05-23 DE DE10323908A patent/DE10323908A1/de not_active Ceased
-
2004
- 2004-04-30 WO PCT/EP2004/050666 patent/WO2004105206A1/de not_active Application Discontinuation
- 2004-04-30 US US10/558,147 patent/US7514891B2/en active Active
- 2004-04-30 CN CN200480014135A patent/CN100583585C/zh not_active Expired - Lifetime
- 2004-04-30 JP JP2006508300A patent/JP2006526381A/ja active Pending
- 2004-04-30 EP EP04730554A patent/EP1627456A1/de not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6153993A (en) * | 1994-06-14 | 2000-11-28 | Kabushiki Kaisha Toshiba | Method and apparatus for controlling a brushless DC motor that indicates a motor failure |
US5721474A (en) * | 1995-08-11 | 1998-02-24 | Samsung Electronics Co., Ltd. | Method and apparatus for preventing excessive current flow in a motor |
US20020105239A1 (en) * | 2000-03-01 | 2002-08-08 | Harald Witzig | Fail-safe mechanism for dc-drive |
US20020074962A1 (en) * | 2000-08-24 | 2002-06-20 | Berger Lahr Gmbh & Co. Kg | Electric device as well as process for its operation |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006136507A2 (de) * | 2005-06-20 | 2006-12-28 | Siemens Vdo Automotive Ag | Verfahren und anordnung zur überwachung von signalen |
WO2006136507A3 (de) * | 2005-06-20 | 2007-04-12 | Siemens Ag | Verfahren und anordnung zur überwachung von signalen |
JP2008544739A (ja) * | 2005-06-20 | 2008-12-04 | ジーメンス ヴィディーオー オートモーティヴ アクチエンゲゼルシャフト | 信号を監視する方法および装置 |
US7609021B2 (en) | 2005-06-20 | 2009-10-27 | Siemens Vdo Automotive Ag | Method and arrangement for monitoring signals |
WO2010112389A1 (de) * | 2009-04-01 | 2010-10-07 | Continental Automotive Gmbh | Schaltung für einen bürstenlosen motor und verfahren zu deren betrieb |
Also Published As
Publication number | Publication date |
---|---|
JP2006526381A (ja) | 2006-11-16 |
DE10323908A1 (de) | 2004-12-23 |
WO2004105206A8 (de) | 2005-01-20 |
CN100583585C (zh) | 2010-01-20 |
EP1627456A1 (de) | 2006-02-22 |
US20070035976A1 (en) | 2007-02-15 |
CN1795599A (zh) | 2006-06-28 |
US7514891B2 (en) | 2009-04-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1662353B1 (de) | Verfahren und Vorrichtung zur Fahrtrichtungserkennung | |
DE2025743B2 (de) | Verfahren und einrichtung zum umschalten mindestens eines wechselstromverbrauchers von einer spannungs- oder stromquelle auf eine andere spannungsoder stromquelle | |
WO2015132064A2 (de) | Verfahren zur strangstrombestimmung in einem elektrischen mehrphasensystem | |
DE102005009069A1 (de) | Steuerschaltung einer Leistungs-Halbleiter-Vorrichtung und steuernde integrierte Schaltung | |
DE10041607B4 (de) | Elektrisches Arbeitsgerät sowie Verfahren zu dessen Betreiben | |
EP1182770A2 (de) | Elektromotorischer Antrieb und Verfahren zum Betreiben eines elektronisch kommutierten Elektromotors | |
WO2004105206A1 (de) | Verfahren und anordnung zur überwachung einer leistungsendstufe | |
EP1355163B1 (de) | Verfahren und Vorrichtung zum Überprüfen eines Umrichters | |
EP2774266B1 (de) | Verfahren und vorrichtung zum betreiben einer elektronisch kommutierten elektrischen maschine in einem fehlerfall | |
DE10249568B4 (de) | Fehleranalyse einer Wechselrichter-Schaltung | |
EP1894284B1 (de) | Verfahren und anordnung zur überwachung von signalen | |
DE102016106547A1 (de) | Schaltereinrichtung für einen elektromotor, steuereinrichtung, lenksystem | |
EP1478071A2 (de) | Verfahren zur Überwachung einer Leistungsendstufe | |
DE102015110460A1 (de) | Erkennung eines Netzphasenausfalls bei Umrichtern mit einer Frequenzdetektion in der Zwischenkreisspannung | |
DE102014220922A1 (de) | Verfahren für eine fehlertolerante Drehwinkelerfassung | |
DE3436776A1 (de) | Ueberwachungseinrichtung insbesondere fuer einen kollektorlosen gleichstrommotor | |
DE102012223581A1 (de) | Vorrichtung und Verfahren zum Überwachen von Signalpegeln | |
EP2936667B1 (de) | Verfahren zum überwachen eines halbbrückenzweiges in einer halbbrücke sowie stromrichter mit dieser überwachung | |
DE19539915B4 (de) | Verfahren zur Überwachung wie Stillstands- und/oder Einrichtdrehzahlüberwachung eines Antriebs, insbesondere hochdynamischen Servoantriebs, sowie Lastrelais insbesondere zur Verwendung bei einem entsprechenden Verfahren | |
DE3924258C2 (de) | Schaltungsanordnung zur Überwachung eines Stromrichters | |
DE102005028605B4 (de) | Verfahren zur Strommessung mit einem Shunt und Vorrichtung zur Strommessung | |
DE102011004911A1 (de) | Verfahren und Vorrichtung zum Betrieb eines bürstenlosen Motors | |
DE102019133918B4 (de) | Prüfvorrichtung zum Prüfen einer Aufstartzyklenzahl einer Erfassungseinrichtung eines Kraftfahrzeugs, sowie Verfahren | |
WO2010118978A2 (de) | Verfahren zum betrieb einer steuerschaltung, insbesondere zur anwendung in einem kraftfahrzeug | |
EP1768253A2 (de) | Verfahren zur Strommessung mit einem Shunt und Vorrichtung zur Strommessung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WR | Later publication of a revised version of an international search report | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2004730554 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007035976 Country of ref document: US Ref document number: 2006508300 Country of ref document: JP Ref document number: 10558147 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 20048141358 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2004730554 Country of ref document: EP |
|
DPEN | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed from 20040101) | ||
WWW | Wipo information: withdrawn in national office |
Ref document number: 2004730554 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10558147 Country of ref document: US |