| 一种带储能的级联光伏逆变器的协同调制方法 |
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| 引用本文： | 杨雯,熊兰,席自强,查晓明.一种带储能的级联光伏逆变器的协同调制方法[J].电源学报,2017,15(5):131-136. |
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| 作者姓名： | 杨雯 熊兰 席自强 查晓明 |
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| 作者单位： | 湖北工业大学太阳能高效利用湖北省协同创新中心, 武汉 430068,湖北工业大学太阳能高效利用湖北省协同创新中心, 武汉 430068,湖北工业大学太阳能高效利用湖北省协同创新中心, 武汉 430068,武汉大学电气工程学院, 武汉 430072 |
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| 基金项目： | 国家自然科学基金资助项目（51507054）；太阳能高效利用湖北省协同创新中心开放基金资助项目（HBSKFMS2014035） |
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| 摘 要： | 提出一种带有储能的混合级联光伏逆变器结构,并针对该逆变器的结构和工作原理,提出基于特定谐波消去(SHE)与载波移相(PS-PWM)调制的协同调制方法。该逆变器将1个储能单元与数个光伏单元混合级联,储能单元使用SHE消除其输出电压中的部分低次谐波,光伏单元采用PS-PWM技术补偿储能单元输出中未被消除的低次谐波,从而进一步降低总的输出电压中谐波含量。仿真结果表明,对于储能单元与光伏单元的输出电压幅值和相位不同的情况,相比于采用单一的PS-PWM调制,采用协同调制方法的输出电压中低次谐波含量与总谐波失真(THD)均较低。
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| 关 键 词： | 储能 光伏逆变器 特定谐波消去 载波移相调制 |
| 收稿时间： | 2017/7/28 0:00:00 |
| 修稿时间： | 2017/9/26 0:00:00 |
A Synergistic Modulation Method for Cascaded PV Inverter with Energy Storage |
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| YANG Wen,XIONG Lan,XI Ziqiang and ZHA Xiaoming.A Synergistic Modulation Method for Cascaded PV Inverter with Energy Storage[J].Journal of power supply,2017,15(5):131-136. |
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| Authors: | YANG Wen XIONG Lan XI Ziqiang and ZHA Xiaoming |
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| Affiliation: | Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430068, China,Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430068, China,Hubei Collaborative Innovation Center for High-efficiency Utilization of Solar Energy, Hubei University of Technology, Wuhan 430068, China and School of Electrical Engineering, Wuhan University, Wuhan 430072, China |
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| Abstract: | A hybrid cascaded photovoltaic(PV) inverter with energy storage is proposed, and a synergistic modula-tion method based on the specific harmonic elimination(SHE) and carrier phase-shift PWM(PS-PWM) is presented for the inverter''s operation. This inverter cascades an energy storage cell with several PV cells, the energy storage cell uses SHE to eliminate the part of low-frequency harmonics in the output voltage, while PV cells adopt PS-PWM to compensate the rest low-frequency harmonics of the energy storage cell, which can further reduce the harmonic in the total output voltage. Simulation results show that, compared with the unified PS-PWM method, the proposed modulation method has less low-frequency harmonics and lower total harmonic distortion(THD) when the modulation indices and out-put phases of the two types of cells are both different. |
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| Keywords: | energy storage photovoltaic inverter specific harmonic elimination phase-shift pulse width modulation |
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