ac frequency variable drive system 交流变频驱动
AC variable frequency speed regulation 交流变频调速
variable frequency AC power system 变频交流电源系统
AC-Exited Variable-Speed Constant-Frequency 交流励磁变速恒频
AC variable-frequency power sources 交流变频电源
ac variable frequency speed regulating 交流变频调速 ; 交流调速
The variable frequency AC controller mounts directly on the AC motor.
变频空调控制器直接安装在交流电机。
It has proven by practice that the two solutions both can implement Variable Frequency Control of ac Motor well, and have good applied cost.
实践证明，两种解决方案均能很好地实现交流电机的变频控制，具有良好的应用价值。
Individual infinite variable speed drive of each roll with AC-motors coupled to programmable frequency inverters.
电机驱动方式为交流变频无极变速驱动。
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