selection of dc voltage 直流母线电压选择
The problem of oversimplification and improper selection of DC model, which exists in the DC modeling when AC and DC systems interact in AC/DC hybrid power system, is discussed.
讨论了目前研究交、直流混合电网交直流系统相互作用时在直流建模上存在的模型过度简化及模型选用不恰当的问题；
The outstanding advantages of DC machines arise from the wide variety of operating characteristics which can be obtained by selection of the method of excitation of the field windings.
直流电机的突出优点是通过选择磁场绕组不同的励磁方法，可以获得变化范围很大的运行特性。
This paper introduced the characteristics and parameter selection of DC filter capacitor used in HVDC transmission system.
主要阐述了高压直流输换流站用直流滤波电容器的特点和设计参数的选择。
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