commutatorless meaning in Chinese

无换向器的
无整流子的

In the paper , on the basis of research of static state and transient state in the scr and series connection valve circuit , the high voltage scr changing current valve device has been developed for ac - dc - ac high voltage commutatorless motor . the series connection valve circuit has been designed and simulated . the hardware design and software programming of trigger pulse system and monitoring system in the photo - electronic - photo fashion has been completed
无换向器电动机在火电厂等工矿企业的电机调速节能领域中有十分广阔的应用前景，本文在对晶闸管元件和串联阀电路的静态特性和动态特性研究的基础上，研制了用于交直交电流型高压无换向器电动机的高压晶闸管换流阀装置，进行了串联阀电路的设计和仿真，完成了电光电方式的触发脉冲系统和监测系统硬件设计及软件编程，并进行了装置的实验调试。