The basic working principle of the DSTATCOM is studied and its mathematical model is established in this paper. The directcurrent control and indirect current control are compared in this paper.
This paper discusses the application of PTC element in the starting of directcurrent electromagnet according to the working principle of electromagnet and the current time relation of PTC.
本文根据电磁铁的工作原理和PTC元件的电流时间特性，探讨了PTC元件在直流电磁铁启动中的应用。
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This paper discusses the integrated PWM controller for the directcurrent governor system, and studies the system construction and the working mechanism.