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US6919651: Circuit arrangement for high-speed switching of inductive loads

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Filing Information

Inventor(s) Stephan Bolz · Günter Lugert · Gerhard Göser ·
Assignee(s) Siemens Aktiengesellschaft ·
Attorney/Agent(s) Baker Botts L.L.P. ·
Primary Examiner Robert L. Deberadinis ·
Application Number US10304286
Filing date 11/26/2002
Issue date 07/19/2005
Prior Publication Data
Predicted expiration date 05/06/2023
Patent term adjustment 161
U.S. Classifications 307/104  · 327/139  · 327/110  · 307/141  ·
International Classifications --
Kind CodeB2
International Classifications 327110 · 327139 · 307104 ·
20 Claims, 6 Drawings


Abstract

A circuit arrangement for switching an inductive load (12, 12a-d) with connections to a power supply source (11, 11′, 11″) by means of which an exciter voltage can be applied to the inductive load (12, 12a-d) in a switched-on state is described, comprising switching means by means of which, depending on a control signal, a power circuit comprising the inductive load (12, 12a-d) and the power supply source connections, can be closed when switched from the switched-off to the switched-on state and opened when switched from the switched-on to the switched-off state, furthermore comprising a first diode (15, 15a-d, 15a′-c′, 15a″-c″) arranged in parallel with the inductive load (12, 12a-d) and so as to block in the switched-on state. This present invention is characterized in that an additional commutation inductance (18) is provided which is arranged in parallel with the inductive load (12, 12a-d) and in series with the first diode (15, 15a-d, 15a′-c′, 15a″-c″).

Independent Claims | See all claims (20)

  1. 1. A circuit arrangement for switching an inductive load, comprising: connections to a power supply source for applying an exciter voltage to the inductive load in a switched-on state, switching means for opening and closing, depending on a control signal, a power circuit comprising the inductive load and the power supply source connections, wherein the circuit is closed when switched from the switched-off to the switched-on state and opened when switched from the switched-on to the switched-off state, a first diode connected in parallel with the inductive load and arranged to block in the switched-on state, and an additional commutation inductance arranged in parallel with the inductive load and in series with the first diode.
  2. 10. A method for switching an inductive load, comprising: providing an exciter voltage that can be applied to the inductive load in a switched-on state, switching, depending on a control signal, a power circuit comprising the inductive load and power supply source connections into either a switched-on state or a switched-off state, connecting a first diode in parallel with the inductive load and arranging it to block in the switched-on state, and providing an additional commutation inductance arranged in parallel with the inductive load and in series with the first diode.
  3. 19. A circuit arrangement for switching an inductive load, said arrangement comprising: power supply connections to supply an exciter voltage to the load in a switched-on state, a switch to open and close, depending upon a control signal, a power circuit comprising the load and power supply connections, wherein the circuit is closed when switched from a switched-off state to the switched-on state and opened when switched from the switched-on state to the switched-off state, a first diode connected in parallel with the load and arranged to block in the switched-on state, a first commutation inductance arranged in parallel with the load and in series with the first diode, and second and third commutation inductances or two networks comprising a commutation inductance and a second diode, one arranged on the ground side and the other on the supply voltage-side of the switch.
  4. 20. A method for switching an inductive load, comprising: applying an exciter voltage to the load in a switched-on state, switching, depending on a control signal, a power circuit comprising the load and power supply connections into either a switched-on state or a switched-off state, connecting a first diode in parallel with the inductive load and arranging it to block in the switched-on state, providing a first commutation inductance and arranging it in parallel with the load and in series with the first diode, and providing two additional commutation inductances or two networks comprising a commutation inductance and a second diode, wherein one is arranged on the ground side and the other is arranged on the supply-voltage side of the switch.

References Cited

U.S. Patent Documents

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* cited by examiner

Referenced By

The current document is not referenced by other documents.

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US20040100150 Gunter Lugert et al. May 2004
SE0302587 SIEMENS AG BOLZ STEPHAN et al. May 2004
DE10341582 SIEMENS AG BOLZ STEPHAN et al. Jun 2004
US6919651 Siemens Aktiengesellschaft Stephan Bolz et al. Jul 2005
SE526960 SIEMENS AG BOLZ STEPHAN et al. Nov 2005