| 三相光伏并网逆变器定频控制算法的研究与实现 |
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| 引用本文： | 王新勇,许炜,汪显博,范波.三相光伏并网逆变器定频控制算法的研究与实现[J].实验室研究与探索,2011,30(1):36-40. |
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| 作者姓名： | 王新勇 许炜 汪显博 范波 |
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| 作者单位： | 1. 河南科技大学,电子信息工程学院,河南洛阳,471003
2. 澳门大学,澳门 |
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| 摘 要： | 为了达到提高光伏并网逆变器动态性能的目的,以及实现单位功率因数输出的要求,从三相光伏并网逆变器的拓扑结构以及工作原理入手,建立了逆变器在两相旋转坐标系下的解耦模型。结合坐标变换和电流解耦控制策略构造了逆变器的双闭环控制结构,对控制器的取值给出了较为合理的参数,通过频率分析验证了双闭环结构的稳定性。采用SPWM调制方式对逆变器开关频率进行调节,通过仿真波形验证了固定开关频率控制算法的有效性。最后,利用TMS320LF2407搭建了实验验证平台,得到了在给定开关频率分别为2、5 kHz条件下的逆变侧电压电流波形,通过逆变器输出电流波形及PWM输出波形的分析,验证了固定开关频率控制策略的可行性。
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| 关 键 词： | 逆变器 开关频率 功率因数 光伏发电 |
Research and Implementation on Three-phase PV Inverter with Constant Frequency Control Algorithm |
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| WANG Xin-yong,XU Wei,WANG Xian-bo,FAN Bo.Research and Implementation on Three-phase PV Inverter with Constant Frequency Control Algorithm[J].Laboratory Research and Exploration,2011,30(1):36-40. |
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| Authors: | WANG Xin-yong XU Wei WANG Xian-bo FAN Bo |
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| Institution: | WANG Xin-yong1,XU Wei2,WANG Xian-bo1,FAN Bo1(1.College of Electronic Information & Engineering,Henan University of Science and Technology,Luoyang 471003,China,2.University of Macau,Macau SAR,China) |
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| Abstract: | In order to improve further the dynamic characteristic,as well as to realize the outputting unity power factor,based on research of thetopology prediction of three-level inverter and principle of work,the decoupled model of inverter was established in rotary two-phase coordinates.A control structure of double close-loop was constructed combined with coordinate transformation and control strategy of current decoupled.The value of the double-loop controller was given for reasonable parameters.The stability of... |
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| Keywords: | inverter switching frequency power factor photovoltaic |
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