并联开关并联开关是连接发电机组和应急母排的线路断路器，所有的单个发电机通过它完成同步运行。
Paralleling breaker a paralleling breaker is the circuit breaker that connects the generator set to the emergency bus, and across which all the individual generator synchronizing functions occur.
利用电流平衡处理技术，实现了双电机拖动的同步运行。
It is also used current balancing treatment technology to realize synchronism operation of twin motor drive.
直驱永磁同步风力发电机运行转速低，一般定子外径都比较大。
Direct-driven PMSG works at low speed and its size is generally big.
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