无刷直流永磁电机的电源虽是直流电，但其内部绕组中的电流仍是交流电，其旋转部分犹如同步电机的磁极转子，其结构及电磁原理与同步电机相似。
With the power being DC, the current of inner winding of the magneto is AC, and the rotating part is just similar to the magnetic rotor of synchronous dynamo.
电机系统emi无源滤波器由电源滤波器和输出侧滤波器组成。
So EMI passive filter of motor system is composed by mains filter and output side filter.
纳尔逊加缪说，我认为他自己建自己的模式，1993年，他成功地获得了一个自我运行电机无外接电源期间6个月！ ！
Nelson Camus has said to me that he has built himself his own model in 1993 and that he has succeed to obtain a self-running motor without external power during a period of 6 months!
如果在网络中没有电源，例如电池或者发电机，则称为无源电路。
If the network contains no energy sources, such as batteries or electrical generators, it is known as a passive network.
在分析电动汽车电源系统和无刷直流电机数学模型的基础上，提出一种基于双向DC/DC变换器的无刷直流电机调速系统。
Based on the power supply system on electric vehicle(EV) and the mathematical mode of brushless DC motor(BLDCM), a speed control system with bi-directional DC/DC converter was proposed.
在分析电动汽车电源系统和无刷直流电机数学模型的基础上，提出一种基于双向DC/DC变换器的无刷直流电机调速系统。
Based on the power supply system on electric vehicle(EV) and the mathematical mode of brushless DC motor(BLDCM), a speed control system with bi-directional DC/DC converter was proposed.
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