The paper presents a fault tolerant scheme for integrating renewable energy sources to HVDC system using a new modular resonant DC-DC converter. The proposed DC-DC converter consists of many identical low voltage submodules which consist of two controllable switches, one diode and a capacitor. The switches of the proposed DC-DC converter are configured to provide the converter an inherent fault tolerant feature which enables it to isolate itself during DC faults in the HVDC system. Zero current switching (ZCS) is also achieved for all the switches used in the converter. The paper focusses on the integration of renewable energy sources to HVDC transmission system using the proposed tapping scheme. The performance of the proposed scheme to evacuate power from renewable energy sources to HVDC transmission system has been demonstrated using simulation studies done in PSCAD/EMTDC. The performance of the proposed DC-DC converter is also verified with experimental results.

中文翻译：

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远程可再生能源与高压直流系统集成的容错方案

本文提出了一种容错方案，用于使用新型模块化谐振 DC-DC 转换器将可再生能源集成到 HVDC 系统中。所提出的 DC-DC 转换器由许多相同的低压子模块组成，这些子模块由两个可控开关、一个二极管和一个电容器组成。所提出的 DC-DC 转换器的开关被配置为为转换器提供固有的容错特性，使其能够在 HVDC 系统中的 DC 故障期间隔离自身。转换器中使用的所有开关也实现了零电流开关 (ZCS)。本文重点介绍使用所提出的分接方案将可再生能源集成到 HVDC 输电系统中。已使用在 PSCAD/EMTDC 中进行的模拟研究证明了所提议的将电力从可再生能源转移到 HVDC 传输系统的性能。所提出的 DC-DC 转换器的性能也得到了实验结果的验证。