CIRCUIT ARRANGEMENT FOR THE SENSORLESS OPERATION OF A UNIVERSAL MOTOR OF A DOMESTIC DEVICE AND CORRESPONDING METHOD

WIPO Patent Application WO/2009/118299

A3

The invention relates to a circuit arrangement (10) for operating a universal motor (11) which is designed to drive a drum of a domestic device for treating items of laundry, said universal motor (11) comprising a stator with at least one field winding (12) and a rotor (13) which is received to be rotationally displaceable and which has a rotor winding that is coupled to the at least one field winding (12) via a commutation unit. The field winding (12) and the rotor winding are arranged between a first and a second connection pole (14, 15) of the universal motor (11). The circuit arrangement further comprises an electronic unit (18) having a control and/or regulation unit (19) which is designed to detect a speed (n) of the universal motor (11). The circuit arrangement is characterized in that a voltage detection unit (59) detects an electric rotor voltage dropping on the rotor winding and in that the control and/or regulation unit (19) is designed to determine the speed (n) of the universal motor (1) depending on the rotor voltage.

JP3337038	INDUSTRIAL APPLICABILITY: Motor control method in a bread making machine
JPS53146116	DEVICE FOR GENERATING LOADDINDICATION SIGNAL
JPS5859387	【考案の名称】インバ-タの保護装置

BINDER ALFRED (DE)
KLEIN HANS-WILHELM (DE)

PCT/EP2009/053410

July 28, 2011

March 24, 2009

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BSH BOSCH SIEMENS HAUSGERAETE (DE)
BINDER ALFRED (DE)
KLEIN HANS-WILHELM (DE)

H02P25/10; H02M5/293; H02P27/04; H02P27/08

EP1806836A1	2007-07-11
US5986417A	1999-11-16
GB2123990A	1984-02-08
FR2455387A1	1980-11-21
DE3239968A1	1984-05-03
FR2526243A1	1983-11-04
JPH0260446A	1990-02-28

BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH (München, DE)

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