Harman International Industries, Inc.

Harman Becker Automotive Systems Gmbh

Oliver Lamparth

Matthias Rupprecht

Michael Ludwig

Arno Kutzki

An electric motor system having a rotor with a plurality of permanent magnets, and a stator having a winding through which current is flowing for driving the rotor. A control unit controls the current flowing through the winding. The control unit employs a first filter and a second filter, each filter is connected to the winding and has outputs coupled to a comparator. The comparator compares the signal output of the first filter to the signal output of the second filter. The control unit controls the current flowing through the winding depending on the result of the comparison of the two filtered signals.

Growing community of inventors

Munich, Georgia

Oliver Lamparth