基于微电网的电力电子变压器控制策略研究

Research on Power Electronic Transformer Control Strategy based on Hybrid Microgrid

在国家“十三五”规划中的新能源战略大背景下,对于结合了分布式能源、电力电子技术和现代控制技术的混合微电网的研究日趋深入,而由于分布式能源的大量入网,如何实现混合微电网系统的稳定性成为了研究的热点和难点,因此本文针对交直流混合微电网的需求,研究了混合微电网的结构以及电力电子变压器在微电网中的拓扑结构和控制策略,并根据电力电子变压器自身特点,提出两种不同的控制策略。搭建了基于Matlab/Simulink仿真验证了控制策略的有效性,实现了混合微电网的稳定运行,提高了电能质量。

New energy strategy in the national much starker choices-and graver consequences-in planning background, the combination of distributed energy, power electronic technology and modern control technology of mixed micro grid increasingly in-depth research, and due to the large number of access distributed energy, how to realize the stability of the mixed micro grid system has become the research hotspot and difficulty, so this paper according to the need of micro ac/dc hybrid power grid, studies the structure and mixed micro grid power electronic transformer in the micro grid topology and control strategy, and according to the characteristics of power electronic transformer, two different control strategies are put forward. The simulation based on Matlab/Simulink verifies the effectiveness of the control strategy, realizes the stable operation of the hybrid micro grid, and improves the power quality.