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| The Research on the Control Method of the Three-phase Photovoltaic Grid-connected Inverter based on Quasi-PR Control |
| Hu Wei, Sun Zhiyi, Liu Liqun, Shen Shuxia, Qin Shuo |
| School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024 |
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Abstract The common control method of three-phase photovoltaic grid-connected inverter is simple and reliable PI control. But PI controller cannot achieve zero static error tracking. It also needs coordinate transformation and feed-forward decoupling control. Through theoretical analysis of the topology and models of the three-phase photovoltaic grid-connected inverter, a new control strategy, based on quasi-PR control, is proposed to achieve zero static error tracking completely. And the specific harmonic compensation controller is introduced to reduce the grid current waveform distortion rate. With the help of simulation and experiment, the results testify that the proposed control strategy is effective.
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Received: 18 August 2015
Published: 18 August 2015
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Hu Wei,Sun Zhiyi,Liu Liqun等. The Research on the Control Method of the Three-phase Photovoltaic Grid-connected Inverter based on Quasi-PR Control[J]. Electrical Engineering, 2015, 16(8): 25-28.
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http://dqjs.cesmedia.cn/EN/Y2015/V16/I8/25
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2015, Vol. 16 
