The basic working principle of the DSTATCOM is studied and its mathematical model is established in this paper. The direct current control and indirect current control are compared in this paper.
本文首先研究了DSTATCOM的基本工作原理，建立了其数学模型，比较了直接电流控制和间接电流控制两种常用的控制方法。
This paper discusses the application of PTC element in the starting of direct current 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。
This paper discusses the integrated PWM controller for the direct current governor system, and studies the system construction and the working mechanism.
本文论述了应用集成PWM控制器的直流调速系统，并对该系统结构和工作原理进行了分析和研究。
The grounding grip of high voltage direct current(HVDC) power system was working in large currents more than 1 000 A for long-term.
高压直流输电系统的接地电流在1000A以上，为确保直流接地系统的安全运行，该文对直流电流密度与土壤电阻率的关系进行了研究。
The grounding grip of high voltage direct current(HVDC) power system was working in large currents more than 1 000 A for long-term.
高压直流输电系统的接地电流在1000A以上，为确保直流接地系统的安全运行，该文对直流电流密度与土壤电阻率的关系进行了研究。
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