新型双向储能变流器分析与研究

张耀文; 张政权; 刘庆想; 欧伟丽

doi:10.19912/j.0254-0096.tynxb.2020-0183

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太阳能学报 ›› 2022, Vol. 43 ›› Issue (4) : 82-89. DOI: 10.19912/j.0254-0096.tynxb.2020-0183

电化学储能安全性与退役动力电池梯次利用关键技术专题

新型双向储能变流器分析与研究

张耀文, 张政权, 刘庆想, 欧伟丽

作者信息 +

ANALYSIS AND RESEARCH OF NEW BIDIRECTIONAL ENERGY STORAGE CONVERTER

Zhang Yaowen, Zhang Zhengquan, Liu Qingxiang, Ou Weili

Author information +

文章历史 +

摘要

传统双级式储能变流器存在直流支撑电容,电能需多次变换从而导致变换器故障、可靠性降低和效率降低。针对此问题,提出一种基于高频交流链接技术的新型双向储能变流器。首先对该变流器的工作原理进行详细介绍,在此基础上依据电荷分配的思想提出一种可行的控制算法,并建立Matlab/Simulink仿真模型对该拓扑结构和控制算法进行验证。仿真结果表明,该拓扑结构在离/并网模式下均可得到稳定的输出波形,功率因数大于0.99,且总谐波含量THD小于3%,可应用于光-储微网与光伏发电系统协同工作,有效抑制光伏发电系统带来的功率波动。

Abstract

The traditional two-stage energy storage converter has a DC support capacitor, and the electric energy needs to be converted multiple times, which leads to converter failure, reduced reliability and efficiency. To solve this problem, a new bidirectional energy storage converter based on high frequency AC link technology is proposed. The working principle of the converter is introduced in detail in this paper. On this basis, a feasible control algorithm is proposed based on the idea of charge distribution, and a Matlab/Simulink simulation model is established to verify the topology and control algorithm. Simulation results show that the topology can obtain stable output waveforms in off/grid mode, with a power factor greater than 0.99 and THD less than 3%. It can be applied to the cooperative work of the optical / storage microgrid and photovoltaic power generation system to effectively suppress photovoltaics Power fluctuations caused by the power generation system.

导出引用

张耀文, 张政权, 刘庆想, 欧伟丽. 新型双向储能变流器分析与研究[J]. 太阳能学报. 2022, 43(4): 82-89 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0183

Zhang Yaowen, Zhang Zhengquan, Liu Qingxiang, Ou Weili. ANALYSIS AND RESEARCH OF NEW BIDIRECTIONAL ENERGY STORAGE CONVERTER[J]. Acta Energiae Solaris Sinica. 2022, 43(4): 82-89 https://doi.org/10.19912/j.0254-0096.tynxb.2020-0183

中图分类号： TM46

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