Two closed loops are constructed in the control system; the inner loop is currentfeedback that is to adjust the torque of the motor.
系统采用双闭环控制，内环采用电流负反馈对电机转矩进行调节；
Flywheel control system has two closed loops, the inner is voltage stabilization loop, other is current loop or is speed loop in different mode.
飞轮控制系统是个多回路系统，内回路为电压稳定回路，外回路在不同的工作模式下分别为电流回路和转速回路。
Each module is controlled by voltage current two closed loops. The common voltage loop controls system output voltage & frequency, and generates a common reference current signal.
三台航空静止变流器模块均为电压、电流双环控制，通过公用电压调节器稳定并联系统的输出电压及频率，同时产生统一的模块电流给定信号。
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