| 瞬时电流控制策略在光伏并网发电系统中的应用 |
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| 引用本文： | 王章权,张超,何湘宁.瞬时电流控制策略在光伏并网发电系统中的应用[J].电气应用,2007,26(4):58-60. |
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| 作者姓名： | 王章权 张超 何湘宁 |
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| 作者单位： | 1. 浙江大学电力电子研究所,310027;浙江树人大学信息科技学院,310015
2. 浙江大学电力电子研究所,310027 |
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| 摘 要： | 分析了电压型逆变器常用的控制方法,根据光伏发电系统的特性指出固定开关频率法比滞环控制电流法更适合用于并网工作时逆变器的控制.并根据光伏发电系统的特性对固定开关频率法进行改进,逆变器电流参考信号由光伏器件输出功率及电网母线电压计算得到,从而控制逆变器输出电压与电网电压基本相同,有效减小并网环流.试验表明本文提出的方法能较好满足工作要求.
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| 关 键 词： | 光伏 逆变器 并网 电流控制 |
| 修稿时间： | 2006年10月30 |
The Control Strategies of Instantaneous Current on the PV Grid-Connected Generation System |
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| Wang Zhangquan.The Control Strategies of Instantaneous Current on the PV Grid-Connected Generation System[J].Electrotechnical Application,2007,26(4):58-60. |
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| Authors: | Wang Zhangquan |
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| Affiliation: | Zhejiang University |
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| Abstract: | The control strategies of instantaneous current for inverters are discussed in detail. According to the theoretical results, the strategy of fixed switching frequency SPWM instantaneous control is a better choice for grid-connected inverter. The control strategy is modified to control the PV grid-connected inverter according to the PV output power and grid voltage. This method can reduce the circulation current remarkably. The presented method is verified by experimental results. |
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| Keywords: | photovoltaic inverter grid-connected current control |
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