| 引用本文: | 李善寿,夏虎,方潜生,叶伟,王浩.考虑模块输入阻抗影响的ISOP-DAB变换器系统输入均压控制策略[J].电力自动化设备,2025,45(3): |
| LI Shanshou,XIA Hu,FANG Qiansheng,YE Wei,WANG Hao.Input voltage sharing control strategy of ISOP-DAB converter system considering influence of module input impedance[J].Electric Power Automation Equipment,2025,45(3): |
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| 摘要: |
| 针对输入串联输出并联双有源全桥(ISOP-DAB)直流变换器系统的子模块元器件参数不一致所导致的输出功率不均分问题，提出一种基于输入阻抗的ISOP-DAB直流变换器系统输入均压控制策略。通过改进传统单移相控制方法，得到一种能够减小回流功率的新型单移相(NSPS)控制方法；进一步，基于NSPS分析ISOP-DAB直流变换器系统的输入电压均分、输出功率均分与各模块输入阻抗之间的关系，通过调节NSPS的内移相比，使各模块输入阻抗幅值相等，实现系统输入电压均分以及模块输出功率相等，同时减小双有源全桥变换器的回流功率，提高系统工作功率。通过仿真和实验验证了所提控制策略的正确性和有效性。 |
| 关键词: 双有源全桥变换器 单移相控制 输入串联输出并联 输入电压均分 输出功率均分 |
| DOI：10.16081/j.epae.202403016 |
| 分类号:TM46 |
| 基金项目:国家自然科学基金资助项目(61901006)；国家重点研发计划项目(2023YFC3807704)；博士科研启动项目(2020QDZ40) |
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| Input voltage sharing control strategy of ISOP-DAB converter system considering influence of module input impedance |
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LI Shanshou1, XIA Hu1, FANG Qiansheng1, YE Wei2, WANG Hao2
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1.Key Laboratory of Intelligent Building & Building Energy Saving, Anhui Jianzhu University, Hefei 230022, China;2.Anhui Nari-Jiyuan Power Grid Technology Co.,Ltd.,Hefei 230088, China
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| Abstract: |
| In order to solve the problem of uneven output power distribution caused by the sub-module parameter inconsistency of input-series output-parallel dual active bridge(ISOP-DAB) DC converter system, an input voltage sharing control strategy of ISOP-DAB DC converter system based on input impedance is proposed. By improving the traditional single phase shift control method, a new single phase shift(NSPS) control method is obtained, which can reduce the return power. Further, based on the NSPS, the relationship between input voltage sharing, output power sharing and the input impedance of each module in the ISOP-DAB DC converter system is analyzed. By adjusting the inner shift ratio of NSPS, the amplitude of input impedance of each module is equal, so that the input voltage sharing of the system and the output power sharing of the module are realized, the return power of the dual active bridge converter is reduced, and the working power of the system is increased. The correctness and effectiveness of the proposed control strategy are verified by simulation and experiment. |
| Key words: dual active bridge converter single phase shift control input-series output-parallel input voltage sharing output power sharing |
