Mitigation of excessive heat due to high frequency switching of voltage source converter (VSC) is always an industrial concern for superconducting magnetic energy storage (SMES) or high temperature superconducting (HTS) material based power conditioning system with grid-tied renewable energy interface. The pulse width modulation (PWM) technique employed for the switching of the VSC has a significant impact on joules heating, switching and conduction power losses, total harmonic distortion (THD) profile of the VSC output, and conversion efficiency in the SMES/HTS based grid-tied power system. In this paper, a modified reference saturated third harmonic injected equal loading PWM technique is proposed for a VSC-based grid-tied photovoltaic (PV) system, which offers lower THD and reduced power conversion losses. The proposed PWM technique employed in the VSC can be used in a PV-based SMES/HTS integrated power system to improve the performance of the power conditioner. To prove the superiority of the proposed PWM technique, a simulation in MATLAB/Simulink was carried out and the simulation results were validated by laboratory tests.

中文翻译：

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基于 VSC 的可再生能源系统的修正参考饱和三次谐波注入等负载 PWM

减轻由于电压源转换器 (VSC) 的高频开关引起的过热一直是超导磁能存储 (SMES) 或基于高温超导 (HTS) 材料的具有并网可再生能源接口的功率调节系统的工业关注点。用于 VSC 开关的脉宽调制 (PWM) 技术对焦耳热、开关和传导功率损耗、VSC 输出的总谐波失真 (THD) 分布以及基于 SMES/HTS 的转换效率具有显着影响并网电力系统。在本文中，针对基于 VSC 的并网光伏 (PV) 系统提出了一种改进的参考饱和三次谐波注入等负载 PWM 技术，该技术可提供较低的 THD 和降低的功率转换损耗。在 VSC 中采用的建议 PWM 技术可用于基于 PV 的 SMES/HTS 集成电力系统，以提高功率调节器的性能。为了证明所提出的 PWM 技术的优越性，在 MATLAB/Simulink 中进行了仿真，并通过实验室测试验证了仿真结果。