METHOD FOR COMMUTATING AN ELECTRONICALLY COMMUTATED DC MOTOR, AND MOTOR FOR CARRYING OUT SAID METHOD

WIPO Patent Application WO2002054565

A3

The invention relates to a method for commutating an electronically commutated motor, by way of an improved commutation process that becomes effective between the cut-off of a voltage pulse and the switching on of a subsequent voltage pulse. On the basis of the current speed a cut-off time is calculated and once this cut-off time is reached, the power supply from a DC current source to the motor is disrupted. The winding to be switched off is operated in the short-circuit operation via two MOSFET transistors, and the declining current in the winding is monitored. Once the current has reached a reduced value, the winding connections of the winding are temporarily subjected to a high-ohmic voltage before the subsequent voltage pulse starts.

BERROTH HANSJOERG (DE)
HAHN ALEXANDER (DE)
HELLER FRANK (DE)
JESKE FRANK (DE)
KARWATH ARNO (DE)
KUNER ARNOLD (DE)
SCHONDELMAIER HANS-DIETER (DE)
RAPPENECKER HERMANN (DE)
STRASSER GUENTHER (DE)

PCT/EP2001/015238

March 20, 2003

December 21, 2001

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PAPST MOTOREN GMBH & CO KG (DE)
BERROTH HANSJOERG (DE)
HAHN ALEXANDER (DE)
HELLER FRANK (DE)
JESKE FRANK (DE)
KARWATH ARNO (DE)
KUNER ARNOLD (DE)
SCHONDELMAIER HANS-DIETER (DE)
RAPPENECKER HERMANN (DE)
STRASSER GUENTHER (DE)

H02P6/00; H02P6/06; H02P6/08; H02P6/14; (IPC1-7): H02P6/00; H02P7/00

US5784270A	1998-07-21
US4581565A	1986-04-08
EP0397514A2	1990-11-14
EP0643473A1	1995-03-15

PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30)

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