| 单相光伏并网系统中级联多电平逆变器的研究 |
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| 引用本文： | 钟德刚,王培. 单相光伏并网系统中级联多电平逆变器的研究[J]. 机电工程, 2011, 28(5): 628-631 |
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| 作者姓名： | 钟德刚 王培 |
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| 作者单位： | 浙江工业大学信息学院,浙江,杭州,310023 |
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| 摘 要： | 针对光伏并网系统的改善输出电压和输出电流波形、降低谐波含量以及提高直流电压的利用率等问题,将级联多电平逆变器应用在光伏并网系统中.在分析级联式多电平逆变器工作原理和其载波移相控制方法的基础上,建立了多DC-DC变换器和多电平逆变器相结合的光伏并网模型,并用Matlab对模型进行了仿真.同时提出了TMS320C2812数...
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| 关 键 词： | 级联逆变器 光伏并网 数字信号处理器 正弦脉宽调制 |
Research on cascaded multilevel inverter of Single-phrase photovoltaic power system |
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| ZHONG De-gang,WANG Pei. Research on cascaded multilevel inverter of Single-phrase photovoltaic power system[J]. Mechanical & Electrical Engineering Magazine, 2011, 28(5): 628-631 |
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| Authors: | ZHONG De-gang WANG Pei |
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| Affiliation: | (College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023,China) |
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| Abstract: | Aiming at the problems of improving waveforms of output voltage and output current,reducing harmonics and increasing the utilization of DC voltage,the cascade multilevel inverters were used in photovoltaic systems.Based on analyzing the principle of cascaded multilevel inverter and the phase-shifted carrier sine pulse width modulation（SPWM） control strategy,a new photovoltaic grid model with several DC-DC converters and cascade multilevel inverter was proposed,and the model was simulated by Matlab.And TMS320C2812 digital siginal processor（DSP） was used in this system to achieve digital control programs,and the multi-pulse SPWM which can control cascade inverter was realized.The experimental result shows that the model has excellent output characteristics and effectiveness of voltage. |
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| Keywords: | cascaded inverter photovoltaic digital signal processor（DSP） sine pulse width modulation（SPWM） |
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