永磁同步电动机从异步启动到牵入同步过程是一个非常复杂的机电瞬变过程。
Permanent magnet synchronous motor running from asynchronous start-up to pull-in synchronization is a very complex electromechanical transient process.
确定出牵入同步时较好和较差初始功角的范围，和在不同初始功角下能够牵入同步的最大负载值。
The favorable and unfavorable initial power angle range and the maximum load torque of pulling into step with different initial angle is determined.
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