| 摘要 |
The start-up and commutation procedure applies to synchronous machines having a rotor with fixed magnetisation, a stator with a three-phase winding and an incremental transducer with a reference pulse signal. When the machine is switched on, currents with differing phases are applied to the stator three-phase winding in order to determine the maximum torque, and thus the stator current phase when the machine first turns. Up to recognition of the reference pulse signal, the stator current phase is given by determination of the relative position of the rotor to the stator. Following the reference pulse signal, the absolute rotor position is determined, and the preset rotor magnetising direction offset angle is used to define the circulating phase of the stator currents. |
