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Activation manner of the synchronous motor which has the brush less direct current energization machine
Activation manner of the synchronous motor which has the brush less direct current energization machine
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机译:具有无刷直流通电机的同步电动机的启动方式
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摘要
A starting method and system for a motor where the motor may be started as an induction motor by applying a magnetizing current to build flux through the stator and with the field current set at the maximum permissible exciter stator current (i.e., the current that will cause rated no-load current in the main field at the transition speed). The motor stator currents will be maintained at a value that allows the motor to generate sufficient breakaway torque to overcome any stiction. At a specific transition speed or after a period of time, the drive will initiate a transition from induction motor control to synchronous motor control by removing the initial magnetizing current and a field current is then applied to the motor through the DC exciter. Once this transition is completed and the drive may ramp up to the desired speed demand.
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