Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2007-07-03
2007-07-03
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S293000, C318S119000, C318S126000, C318S281000
Reexamination Certificate
active
11267101
ABSTRACT:
A circuit configuration for driving an electric motor, in particular of a washing machine, includes power switches connected to connection terminals of the electric motor and to a voltage intermediate circuit. A driver circuit is connected to the voltage intermediate circuit and to the power switches. A control unit, in particular a micro controller, is connected to the driver circuit. The control unit generates control signals for controlling at least one rotation speed of the electric motor. The driver circuit generates short-circuit control signals for driving the power switches, which bring about a short circuit of the connection terminals connected to the power switches, independently of the control signals from the control unit. The driver circuit generates the short-circuit control signals as a function of a detection of an overvoltage of the voltage intermediate circuit over a desired voltage range. A method for controlling an electric motor is also provided.
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Colon Santana Eduardo
Diehl AKO Stiftung & Co. KG
Donovan Lincoln
Greenberg Laurence A.
Locher Ralph E.
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