METHOD AND CIRCUIT ASSEMBLY FOR CURRENT CONTROL IN 3-PHASE MOTORS

Title:

METHOD AND CIRCUIT ASSEMBLY FOR CURRENT CONTROL IN 3-PHASE MOTORS

Document Type and Number:

WIPO Patent Application WO/2012/010169

Kind Code:

A3

Abstract:

The invention relates to a method and circuit assembly for controlling the motor current in an electric 3-phase motor, in particular in a 3-phase stepper motor, by means of a chopper process. For at least two of the three motor connections (U, V, W) a respective chopper phase is cyclically activated, while a target motor current (IsU; IsV; IsW) supplied for the motor connection (U; V; W) in question is injected into said motor connection by means of a chopper process, while the two other motor connections are connected to each other.

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Inventors:

LARSSON LARS (DE)
DWERSTEG BERNHARD (DE)

Application Number:

PCT/DE2011/075171

Publication Date:

April 25, 2013

Filing Date:

July 18, 2011

Export Citation:

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Assignee:

TRINAMIC MOTION CONTROL GMBH & CO KG (DE)
LARSSON LARS (DE)
DWERSTEG BERNHARD (DE)

International Classes:

H02P8/12

Foreign References:

DE102006001915A1	2006-10-26
JP2002281788A	2002-09-27
CN1073059A	1993-06-09
JP2001231299A	2001-08-24

Attorney, Agent or Firm:

HEUN, Thomas (Patentanwalt, Hamburg, DE)

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