文中主要介绍了同步电机负载换相变频软启系统的电气原理。
In this paper, it is mainly introduced the electrical principles of soft -start inverter with load commutation on synchronous machine, and described the general models of synchronous machine.
阐述了利用PL C实现一台软启动器控制两组两用一备水泵电机的软启、软停的控制方式，并对运行过程进行了分析。
To explicate the softstart and softstop, the control way of PLC achieve a softstarter controls two teams two uses a standby water pump motor, and analyze operation process.
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