ABSTRACT

The microgrid power plant contains a large number of power electronic converters, which inevitably produce power quality problems such as harmonic noise and voltage fluctuations. Harmonics noise is produced excessive heat and reduce the life of the equipment. In this paper, the control strategy of a combination of the bidirectional DC/DC and DC/AC device to integrate supercapacitor and Active Power Filter is proposed. The detail of the mathematical model of the working principle of combination and analyzes the structural characteristics and the switching modes of power regulation and harmonic control logic is provided. The simulation results show that the combined device can perform the functions of power smoothness, reactive power compensation and harmonic control according to the needs, which verifies the rationality and effectiveness of the combined equipment operation.

摘要

微电网电厂包含大量电力电子变换器，不可避免地产生谐波噪声、电压波动等电能质量问题。谐波噪声是产生过多热量而降低设备寿命的。本文提出了双向DC/DC和DC/AC器件相结合的集成超级电容器和有源电力滤波器的控制策略。详细介绍了组合工作原理的数学模型，分析了功率调节和谐波控制逻辑的结构特点和开关方式。仿真结果表明，组合装置可以根据需要实现功率平滑、无功补偿和谐波治理功能，