Control device for an asynchronous machine and method for operating an asynchronous machine
OwnerMartin Braun, Simon Dietrichinventors
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Abstract
The present invention provides a method and a device to determine the rotor field angle of an asynchronous machine even during the magnetising phase, in which the rotor field of a rotor of the asynchronous machine is built up. The asynchronous machine can then be actuated in a controlled operating mode even during the magnetising phase. The startup properties of the asynchronous machine can thus be improved, the magnetising phase of the asynchronous machine is shortened and it is possible to set a desired torque even during the magnetising phase.
Claims10
A control device (1) for an asynchronous machine (2) having:
- a rotor field angle detector (11) which is configured to determine a rotor field angle in a magnetization phase of the asynchronous machine (2);
- and
- a motor controller (12) which is configured to actuate the asynchronous machine (2) on the basis of the determined rotor field angle in the magnetization phase.
A method (100) for operating an asynchronous machine (2) in a magnetization phase, comprising the steps:
- making available (110) the asynchronous machine (2) in a magnetization phase;
- determining (120), by a rotor field angle detector, a rotor field angle of the asynchronous machine (2);
- and
- actuating (130), by a controller, the asynchronous machine (2) in the magnetization phase on the basis of the determined rotor field angle.
Dependencies are inferred from the claim text.