专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

41. 发明专利

DE59902987D1 未知
公开(公告)号：DE59902987D1
公开(公告)日：2002-11-07
申请号：DE59902987
申请日：1999-11-22
申请人： SIEMENS AG
发明人： BAUDELOT ERIC , BRUCKMANN MANFRED , MITLEHNER HEINZ , WEIS BENNO
IPC分类号： H02M1/088 , H02M7/538 , H03K17/0814
摘要： The invention provides a method by which losses are reduced during the commutation of a free-running, driven power converter valve (T2) of an invertor phase (2) to a current-accepting power converter valve (T1) of said invertor phase (2). The current-accepting power converter valve (T1) is switched on at the beginning of the commutation process and the free-running, driven power converter valve (T2) is rapidly switched off as soon as the value of its drain voltage (UD) is zero.

42. 发明专利

DE10048442A1 Protection circuit for field-controlled power semiconductor has protection element providing low-ohmic path between gate and emitter of latter 未知
公开(公告)号：DE10048442A1
公开(公告)日：2002-03-14
申请号：DE10048442
申请日：2000-09-29
申请人： SIEMENS AG
发明人： RUFF MARTIN , WEIS BENNO , ZAISER GEORG
IPC分类号： H03K17/0812 , H03K17/30 , H03K17/06 , H03K17/687
摘要： The protection circuit prevents conduction of the field-controlled power semiconductor when an incorrect control voltage is applied to the control circuit for the field-controlled power semiconductor, using a protection element connected across its gate (G) and emitter (E), for providing a low-ohmic path in response to an incorrect control voltage. The protection element can be provided by a relay or an electronic switch (J-FET). An Independent claim for an operating method for a protection circuit for a field-controlled power semiconductor is also included.

43. 发明专利

BR0011501A 未知
公开(公告)号：BR0011501A
公开(公告)日：2002-02-26
申请号：BR0011501
申请日：2000-05-29
申请人： SIEMENS AG
发明人： WEIS BENNO , BAUDELOT ERIC , BRUCKMANN MANFRED , MITLEHNER HEINZ
IPC分类号： H03K17/082 , H03K17/567
摘要： A method and an apparatus for turning off a cascode circuit comprising a series circuit formed by a low-blocking-capability and high-blocking-capability semiconductor switch, are described. When a turn-off command arrives, the gate voltage of the low-blocking-capability semiconductor switch is controlled in such a way that its drain voltage is held constant in the active range of the low-blocking-capability semiconductor switch. Consequently, an impermissible overvoltage at high potential of the cascode circuit at low potential is detected and actively limited.

44. 发明专利

DE10033092A1 Rectifier IGBT circuit with several IGBTs in series comprises reverse feed diode for disposing of discharge energy of switching capacitor to storage capacitor on switch-on of IGBT 未知
公开(公告)号：DE10033092A1
公开(公告)日：2002-01-24
申请号：DE10033092
申请日：2000-07-07
申请人： SIEMENS AG
发明人： BRUCKMANN MANFRED , WEIS BENNO , ZAISER GEORG
IPC分类号： H02M7/48 , H02M7/487 , H03K17/00 , H03K17/0814 , H03K17/10 , H02M7/00 , H03K17/08
摘要： The circuit has several IGBTs in series, each associated with a switching module. Each IGBT (T1-6) of the rectifier circuit is coupled in parallel a switching capacitor (C) with a series switching diode (DS) for charging and limiting the voltage rise velocity during switch-off of the IGBT. To each IGBT is coupled in series a switching inductor (I) for limiting the current increase velocity on switch-on of the allocated IGBT. To the switching capacitor is coupled in series a reverse feed diode (DR), disposing with discharge energy of the switching capacitor to a storage capacitor (Cc) on switch-on of the IGBT. Independent claims are included for operation of the rectifier IGBT circuit.

45. 发明专利

CA2376750A1 METHOD AND APPARATUS FOR TURNING OFF A CASCODE CIRCUIT WITH VOLTAGE-CONTROLLED SEMICONDUCTOR SWITCHES 未知
公开(公告)号：CA2376750A1
公开(公告)日：2000-12-21
申请号：CA2376750
申请日：2000-05-29
申请人： SIEMENS AG
发明人： BRUCKMANN MANFRED , BAUDELOT ERIC , WEIS BENNO , MITLEHNER HEINZ
IPC分类号： H03K17/082 , H03K17/567
摘要： The invention relates to a method and a device for disconnecting a cascode circuit (2) consisting of a series connection of a low-blocking and a high- blocking semiconductor switch (4, 6). According to the invention, on recepti on of an incoming disconnection command (USt) the gate voltage (UGS) of the low - blocking semiconductor switch (4) is controlled such that its drain voltage (UD'S) is constantly held in the active range of said low-blocking semiconductor switch (4). In this way an excessive increase in the voltage o f the low-voltage cascode circuit to a high voltage is detected and actively limited.

46. 发明专利

DE19905078C1 未知
公开(公告)号：DE19905078C1
公开(公告)日：2000-10-12
申请号：DE19905078
申请日：1999-02-08
申请人： SIEMENS AG
发明人： BAUDELOT ERIC , BRUCKMANN MANFRED , MITLEHNER HEINZ , WEIS BENNO
IPC分类号： H03K17/12 , H03K17/082 , H03K17/567
摘要： A method and an apparatus for balancing the power loss in at least two electrically parallel-connected cascode circuits, which each have a low-blocking semiconductor switch composed of silicon and a high-blocking-capability semiconductor switch composed of silicon carbide is disclosed. According to the present invention, an output voltage of each low-blocking-capability semiconductor switch is detected, with correction values being established as a function of them, and being superimposed on corresponding control signals for the low-blocking-capability semiconductor switches. An unbalanced current distributor can thus be actively balanced.

47. 发明专利

DK2928055T3 Modulær omformer og fremgangsmåde til generering af en sinusformet udgangsspænding med reduceret indhold af harmoniske svingninger 未知
公开(公告)号：DK2928055T3
公开(公告)日：2019-04-23
申请号：DK14001185
申请日：2014-03-31
申请人： SIEMENS AG
发明人： WEIS BENNO
IPC分类号： H02M1/12 , H02M7/483

48. 发明专利

DE102009008047A1 Spannungsversorgung für eine Ansteuerung oberer abschaltbarer Leistungshalbleiterschalter eines grundfrequenz getakteten netzseitigen Stromrichters 未知
公开(公告)号：DE102009008047A1
公开(公告)日：2010-08-19
申请号：DE102009008047
申请日：2009-02-09
申请人： SIEMENS AG
发明人： WEIS BENNO
IPC分类号： H02M1/08
摘要： Die Erfindung betrifft eine Vorrichtung zur Spannungsversorgung einer Ansteuerschaltung (20) oberer abschaltbarer Leistungshalbleiterschalter (T1, T3, T5) eines Grundfrequenz getakteten netzseitigen Stromrichters (4) eines Spannungszwischenkreis-Umrichters (2) ohne Zwischenkreiskondensator, wobei diese Vorrichtung einen Speicherkondensator (C1) aufweist, der elektrisch parallel zu Eingangs-Anschlüssen (26, 28) einer Ansteuerschaltung (20) und mit seinem positiven Anschluss (30) mittels eines Widerstandes (R1) und einer Entkopplungsdiode (D1) mit einem positiven Ausgangs-Anschluss (32) einer Spannungsquelle verknüpft ist. Erfindungsgemäß ist eine Entkopplungsdiode (D2) elektrisch in Reihe zum Speicherkondensator (C1) geschaltet, ist elektrisch parallel zu dieser Reihenschaltung eine ein Zeitglied (38) bildende Parallelschaltung eines Kondensators (C3) und eines Widerstandes (R2) geschaltet und ist ein positiver Anschluss (44) des Zeitgliedes (38) mit einem Eingangs-Anschluss einer Unterspannungsüberwachung (40) der Ansteuerschaltung (20) verknüpft. Somit kann bei einem Grundfrequenz getakteten netzseitigen Stromrichter (4) eines Spannungszwischenkreis-Umrichters (2) die kostengünstige Bootstrap-Schaltung verwendet werden, ohne dass für den Fehlerfall "motorseitiger Kurzschluss" wenigstens ein zusätzliches potentialtrennendes Bauelement und ein separates Steuersignal verwendet werden müssen.

49. 发明专利

DE102008026869A1 未知
公开(公告)号：DE102008026869A1
公开(公告)日：2009-12-10
申请号：DE102008026869
申请日：2008-06-05
申请人： SIEMENS AG
发明人： SCHIERLING HUBERT , WEIS BENNO
IPC分类号： H03H7/01
摘要： The invention relates to a lossy triphase low-pass filter having a filter choke, a filter capacitor, and an attenuation element per phase of said the low-pass filter, wherein one filter capacitor and one attenuation element each are electrically connected in series. Two diodes are provided as attenuation elements, which are electrically connected to each other in an anti-parallel manner. In this manner a lossy triphase low-pass filter is obtained, the power loss of which is significantly reduced without any loss of the attenuation effect.

50. 发明专利

DE102008022923A1 Method for running period determination of control unit of switched-off semiconductor switch of pulse power converter of voltage intermediate circuit, involves measuring converter output current during time determination 未知
公开(公告)号：DE102008022923A1
公开(公告)日：2009-11-19
申请号：DE102008022923
申请日：2008-05-09
申请人： SIEMENS AG
发明人： VOELKEL STEFAN , WEIS BENNO
IPC分类号： H02M1/38 , H02M1/08 , H02M7/48
摘要： The method involves measuring converter output current during time determination at bridge section outputs (R,S) belonging to controllably switch off semiconductor switches (T1,T2). The detected time differences are stored as switch on or switch off running periods of control units (8,10) with detected converter-output current.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式