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| 一种单相并网逆变器电流相位的补偿方法 | |
| 引用本文： | 崔文峰,赵一,刘祖斌,何湘宁. 一种单相并网逆变器电流相位的补偿方法[J]. 电力电子技术, 2011, 45(8): 81-83 |
| 作者姓名： | 崔文峰 赵一 刘祖斌 何湘宁 |
| 作者单位： | 浙江大学,电气工程学院,浙江杭州310027 |
| 摘 要： | 针对单相并网逆变器中,传统电流PI控制算法下的并网电流与电网电压存在相位差,尤其是在电流较小时相位差比较严重,导致逆变器输出功率因数较低的问题,提出了一种减小并网电流与电网电压相位差的控制方法.通过理论分析计算,得到不同的控制参数和电流给定情况下,并网电流与指令电流之间相位差的数学表达式,然后在指令电流中进行相应的相位... |
| 关 键 词： | 逆变器 并网电流控制 比例积分控制 |
A Phase Compensation Method for Grid-connected Current in Single Phase Inverters |
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| CUI Wen-feng,ZHAO Yi,LIU Zu-bing,HE Xiang-ning. A Phase Compensation Method for Grid-connected Current in Single Phase Inverters[J]. Power Electronics, 2011, 45(8): 81-83 | |
| Authors: | CUI Wen-feng ZHAO Yi LIU Zu-bing HE Xiang-ning |
| Affiliation: | (Zhejiang University,Hangzhou 310027,China) |
| Abstract: | A control strategy is proposed to improve the quality of the grid-connected current for single phase inverter.The grid-connected current usually has a small phase shift with the grid voltage by employing traditional PI control algorithms and the phase shift increases if the output current is lower.This paper analyzes the phase shift and gives an exact mathematical expression of it.Then compensation can be done in the current reference.As a result,the phase shift can be decreased and a high power factor can be achieved.The control strategy is verified by experiment with satisfied results. |
| Keywords: | inverter grid-connected current control proportion-integration control |
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