Webasto Se

Mitsuba Corporation

Franz Fersch

Bernhard Meier

Werner Lissner

Yuichi Takamura

Peter Wittich

Jens Kreher

Imre Fekete

Rudolf Haeussermann

The invention relates to an arrangement for operating an electric motor, for example an electric motor for actuating a roof component, in a vehicle. Therein, the electric motor is electrically connected via at least two control lines with a motor control unit. The motor control unit is configured to control the electric motor by means of pulse width modulation. The motor control unit is configured to operate a first one of the two drive lines as an inactive line, and to operate a second one of the two drive lines as an active line during control of the electric motor. A switching module associated with the electric motor is configured to connect a terminal of the pole housing of the electric motor with the drive line which is operated as the inactive line during operation of the electric motor. The invention further relates to an electric motor as well as to a method of operating an electric motor, for example an electric motor for actuating a roof component, in a vehicle.

Arrangement for operating an electric motor in a vehicle

A metal gear cover, which is provided so as to cover a worm wheel housing, is disposed between a worm wheeland a circuit boardand grounded, thereby quickly introducing exogenous noise 'ON' such as static electricity to the outside of the sunroof motor, even if exogenous noise 'ON' enters the sunroof motorand reaches the gear cover. Therefore, it is possible to surely prevent exogenous noise &#x201c;ON&#x201d; from being reflected to the circuit board, and causing the circuit boardto malfunction and the like. Furthermore, it is possible to improve reliability of the sunroof motor

Electric motor

Growing community of inventors

Gauting, Germany

Franz Fersch