| 引用本文: | 张国澎,华 森,刘 渤,等.储能变流器有源前端模块化交错并联环流抑制[J].电力系统保护与控制,2025,53(10):78-86.[点击复制] |
| ZHANG Guopeng,HUA Sen,LIU Bo,et al.Circulating current suppression in the modular interleaved parallel active front-end of energy storage converters[J].Power System Protection and Control,2025,53(10):78-86[点击复制] |
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| 储能变流器有源前端模块化交错并联环流抑制 |
| 张国澎1,2,华森1,刘渤3,郑征1,2,陶海军1,2,李常志1 |
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| (1.河南理工大学电气工程与自动化学院，河南 焦作 454003;2.河南省煤矿装备智能检测与控制重点实验室，
河南 焦作 454003;3.国网河南省电力公司确山县供电公司，河南 驻马店 463200) |
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| 摘要: |
| 针对交、直流侧分别并联的储能变流器有源前端模块化交错并联带来的零序环流问题，提出一种基于无差拍算法的改进环流抑制策略。首先，分析并联模块交错调制对环流的影响，给出系统在三相静止坐标系下的数学模型，并建立交错并联系统环流等效电路。然后，设计了环流控制器，环流控制通过计算每个模块的环流大小，得出各个模块的零矢量调节参数。其次，对相应模块控制过程中空间矢量脉宽调制(space vector pulse width modulation, SVPWM)的零矢量进行调节来抑制环流。最后，通过实验验证了该方法能够更有效地实现环流抑制和均流控制，并将系统效率提高了2.1%。 |
| 关键词: 储能变流器有源前端 多模块并联 交错调制 无差拍算法 环流抑制 |
| DOI：10.19783/j.cnki.pspc.241040 |
| 投稿时间：2024-08-04修订日期：2024-12-03 |
| 基金项目:国家自然科学基金项目资助(52267018)；河南省国际科技合作项目资助(232102520017)；河南省科技攻关项目资助(222102220014) |
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| Circulating current suppression in the modular interleaved parallel active front-end of energy storage converters |
| ZHANG Guopeng1,2,HUA Sen1,LIU Bo3,ZHENG Zheng1,2,TAO Haijun1,2,LI Changzhi1 |
| (1. School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454003, China;
2. Henan Key Laboratory of Intelligent Detection and Control of Coal Mine Equipment, Jiaozuo 454003, China;
3. Queshan County Power Supply Company, State Grid Henan Electric Power Company, Zhumadian 463200, China) |
| Abstract: |
| To address the zero-sequence circulating current issue caused by modular interleaved parallel connections in active front-ends of energy storage converters connected in parallel on both AC and DC sides, an improved circulating current suppression strategy based on a deadbeat algorithm is proposed. First, the effect of interleaved modulation among parallel modules on circulating current is analyzed. Second, a mathematical model of the system is established in the three-phase stationary coordinate system, along with an equivalent circuit of circulating current in the interleaved parallel system. Then, a circulating current controller is designed, where the control algorithm derives the zero-vector modulation parameters for each module by calculating the magnitude of the circulating current. Next, the zero vectors in the space vector pulse width modulation (SVPWM) process of the respective modules are adjusted to suppress the circulating current. Finally, experimental results verify that the proposed method can effectively suppress circulating current and achieve current sharing control, improving system efficiency by 2.1%. |
| Key words: active front-end of energy storage converter multi-module parallel connection interleaved modulation deadbeat algorithm circulating current suppression |
