| 一种基于SVPWM并网逆变器电流控制的研究 |
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| 引用本文： | 李冬辉,桑元. 一种基于SVPWM并网逆变器电流控制的研究[J]. 节能技术, 2014, 32(5): 419-422 |
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| 作者姓名： | 李冬辉 桑元 |
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| 作者单位： | 天津大学电气与自动化工程学院,天津,300072 |
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| 摘 要： | 为提高光伏并网发电系统的输出电能质量,在重复控制策略的基础上,提出一种基于SVPWM并网逆变器电流控制的重复PI复合控制方法。该方法通过重复控制策略来抑制由死区等因素引起的周期性扰动,PI控制策略用来提高系统的动态性能,两种控制策略互为补充以提高系统的动态和稳态性能,同时,在并网逆变器直流侧加入电压闭环以稳定直流母线电压。通过Matlab/Simulink仿真分析,三相并网逆变器输出电流的总谐波畸变率为1.32%。实验结果验证了该复合控制方法的有效性。
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| 关 键 词： | 光伏并网 逆变器 电流控制 重复控制 PI控制 |
The Research of Grid-connected Inverter Current Control based on SVPWM |
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| LI Dong-hui,SANG Yuan. The Research of Grid-connected Inverter Current Control based on SVPWM[J]. Energy Conservation Technology, 2014, 32(5): 419-422 |
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| Authors: | LI Dong-hui SANG Yuan |
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| Affiliation: | 1.The College of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China) |
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| Abstract: | In order to improve the output power quality of the photovoltaic grid power system,the paper analysis the base of the repetitive control principle and put forward the repetitive control calculate PI control based on space vector control strategy,the repetitive control can restrain the periodic disturbance caused by factors such as dead zone,PI control is to improve the dynamic performance of the system and the dc voltage loop is to stabilize the dc bus voltage.The result of Matlab/Simulink verify the effectiveness of the proposed control method,and total harmonic distortion rate of the three-phase grid current is 1.32％. |
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| Keywords: | photovoltaic grid connected inverter current control repetitive control PI control |
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