中国电机工程学报2024，Vol.44Issue(5)：1948-1961,中插24,15.DOI:10.13334/j.0258-8013.pcsee.223461
基于光储混合配置的级联H桥型光伏逆变器功率平衡策略
Power Balance Strategy of Cascaded H-bridge Photovoltaic Inverter Based on Hybrid Configuration of Photovoltaic and Energy Storage
孙孝峰 1刘鑫磊 1滕甲训 1张㼆 1赵巍 1李昕1
作者信息
- 1. 电力电子节能与传动控制河北省重点实验室(燕山大学),河北省 秦皇岛市 066004
- 折叠
摘要
Abstract
The cascade H-bridge(CHB)converter has become the preferred solution for large-scale photovoltaic(PV)grid-connected inverters due to its modular design.However,under different light intensities and temperatures,the power generated by PV modules in different areas varies,resulting in uneven and unstable output power between phases of the CHB converter.To this end,this paper proposes a hybrid power routing based on the CHB structure with a small amount of energy storage modules in the three-phase CHB PV inverter,which uses collaborative optical storage control to maintain stable power within the CHB,eliminating the unbalanced power generated by distributed PV between phases.And the converter output power can always meet the upper power dispatch on the grid side,improving the stability of the PV system.For the system safety region,the power transmitted by the full-bridge sub-module is limited under the carrier phase-shift modulation strategy,and the configuration of the PV and storage modules is analyzed in detail.Finally,the correctness and effectiveness of the proposed topology and control strategy are verified through simulations and experiments.关键词
级联H桥变换器/光伏/功率不均衡/集中式储能/功率限值Key words
cascade H-bridge(CHB)/photovoltaic(PV)/unbalanced power/centralized energy storage(CES)/power limitation分类
信息技术与安全科学引用本文复制引用
孙孝峰,刘鑫磊,滕甲训,张㼆,赵巍,李昕..基于光储混合配置的级联H桥型光伏逆变器功率平衡策略[J].中国电机工程学报,2024,44(5):1948-1961,中插24,15.
