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Capacitor Voltage Ripple Minimization in Voltage Source Converter for HVDC Applications

机译:用于HVDC应用的电压源转换器中的电容器电压纹波最小化

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摘要

In this paper an exhaustive study on the effects of the circulating currents in the modular multilevel converter in HVDC applications is presented. In the first part, an analytical study of the converter is reported, with emphasis on the capacitors voltage ripple in presence of different circulating currents. In particular, the effects of the second and fourth harmonic components in the circulating current are evaluated in a general working point and, in particular, in the more significant working points corresponding to the inverter, rectifier, inductive and capacitive operation modes. The second part is a simulated HVDC plant verification of the voltage capacitor ripple expression.
机译:本文对HVDC应用中模块化多电平转换器中循环电流的影响进行了详尽的研究。在第一部分中,报告了对转换器的分析研究,重点是在存在不同循环电流的情况下电容器的电压纹波。特别地,在一般的工作点中,尤其是在对应于逆变器,整流器,电感性和电容性工作模式的更重要的工作点中,评估二次和第四谐波分量对循环电流的影响。第二部分是模拟HVDC工厂对电压电容器纹波表达式的验证。

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