基于拓展移相调制的双有源桥回流功率优化策略

doi:10.19912/j.0254-0096.tynxb.2020-0546

太阳能学报 ›› 2022, Vol. 43 ›› Issue (3): 216-222.DOI: 10.19912/j.0254-0096.tynxb.2020-0546

基于拓展移相调制的双有源桥回流功率优化策略

李彦君^1,2, 张兴^1,2, 赵文广^1,2, 钱尼信^1,2, 王付胜^1,2

1.合肥工业大学电气与自动化工程学院,合肥 230009;
2.可再生能源接入电网技术国家地方联合工程实验室（合肥工业大学）,合肥 230009

收稿日期:2020-06-15 发布日期:2022-09-28
通讯作者: 张兴（1963—）,男,博士、教授、博士生导师,主要从事大型光伏并网发电、大功率风力发电并网变流器等方面研究。honglf@ustc.edu.cn
基金资助:
国家重点研发计划（2018YFB1500700）

OPTIMIZED STRATEGY OF DUAL ACTIVE BRIDGE REFLUX POWER BASED ON EXTENDED PHASE SHIFT MODULATION

Li Yanjun^1,2, Zhang Xing^1,2, Zhao Wenguang^1,2, Qian Nixin^1,2, Wang Fusheng^1,2

1. School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China;
2. National and Local Joint Engineering Laboratory for Renewable Energy Access to Grid Technology（Hefei University of Technology）, Hefei 230009, China

Received:2020-06-15 Published:2022-09-28

摘要/Abstract

摘要： 在光伏直流汇聚与消纳领域,针对双有源桥DC-DC变换器由于回流功率导致效率降低的问题,在扩展移相调制的基础上,提出一种基于移相比坐标变换的回流功率优化调制策略。所提策略简化了不同模式下的传输功率数学模型,给出了回流功率分段优化运行轨迹,保证了传输功率与坐标变换后外移相比的单调性,根据坐标变换后的外移相比寻求最优移相比组合,无需负载侧电流传感器即可实现任意电压变换比下回流功率最优。仿真与实验结果验证了所提方案的有效性。

关键词: 光伏, 双有源桥, 拓展移相, 回流功率, 移相比, 坐标变换

Abstract: In the field of photovoltaic DC convergence and consumption, for the problem of reduced efficiency of dual active bridge DC-DC converters due to reflux power, on the basis of extended phase-shift modulation, an optimized modulation strategy for reflux power based on phase-shift coordinate transformation is proposed. The proposed strategy simplifies the mathematical model of the transmission power in different modes, and gives a segmented optimized trajectory of the reflux power to ensure the monotonicity of the transmission power compared with the shift after coordinate transformation. The optimal shift-combination combination can realize the optimal reflux power at any voltage conversion ratio without the load-side current sensor. Simulation and experimental results verify the effectiveness of the proposed scheme.

Key words: PV, dual active bridge, extended phase shift, reflux power, phase shift, coordinate transformation

中图分类号:

TM464

李彦君, 张兴, 赵文广, 钱尼信, 王付胜. 基于拓展移相调制的双有源桥回流功率优化策略[J]. 太阳能学报, 2022, 43(3): 216-222.

Li Yanjun, Zhang Xing, Zhao Wenguang, Qian Nixin, Wang Fusheng. OPTIMIZED STRATEGY OF DUAL ACTIVE BRIDGE REFLUX POWER BASED ON EXTENDED PHASE SHIFT MODULATION[J]. Acta Energiae Solaris Sinica, 2022, 43(3): 216-222.

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基于拓展移相调制的双有源桥回流功率优化策略

OPTIMIZED STRATEGY OF DUAL ACTIVE BRIDGE REFLUX POWER BASED ON EXTENDED PHASE SHIFT MODULATION

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