大型无换向器电机技术

Large Pole-changer-free Electric Motor Technology

大型同步电机经过变频器与电网连结，采用转子磁极位置反馈信号进行闭环控制的无换向器电机技术，可使大型同步电机实现具有直流电机无级平滑调速，目前最大单机容量已发展到１００ＭＷ，极限容量为２５０ＭＷ，在电力及传动行业具有广阔的应用前景。

The pole -changer -free electric motor technology, which connects tile large synchronous electric motors with the electric network through frequency -ehangers and uses fedback signals of magnetic pole position of rotors to achieve closed -loop control, enables large synchronous electric motors to achieve stepless smooth speed regulation as direct-current electric motors. The maximum single motor capacity has gone up to 100 MW so far with a limit capacity of 250 MW, and it has a great prospect application in the electric power and transmission industry.