| 直接驱动型全功率变流风力发电系统 |
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| 引用本文： | 李建林,胡书举,王剑飞,许洪华.直接驱动型全功率变流风力发电系统[J].动力工程,2008,28(6). |
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| 作者姓名： | 李建林 胡书举 王剑飞 许洪华 |
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| 作者单位： | 中国科学院电工研究所 |
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| 摘 要： | 从等效电路的角度分析了两级联H桥输出五电平的工作模式.为了满足直驱型风电系统对变流器的大功率要求,采用载波相移正弦脉宽调制技术(CPS-SPWM)控制级联H桥变流器,并对比了常规CPS-SPWM调制方法和对称调制法在实现五电平输出上的差异,经仿真和试验验证:这种拓扑结构满足直驱型风力发电系统对变流器的要求,说明CPS-SPWM调制方法适用于直驱型风力系统中的大功率变流器,在提高装置功率容量的同时,可以有效地减小变流器输出谐波,调节输出波形,提高整个装置的信号传输带宽.
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| 关 键 词： | 能源系统工程 风能 变速恒频风力发电 直接驱动 大功率 变流器 |
Full-power Direct-driven Variable-speed Wind Power Generation Systems |
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| LI Jian-lin,HU Shu-ju,WANG Jian-fei,XU Hong-hua.Full-power Direct-driven Variable-speed Wind Power Generation Systems[J].Power Engineering,2008,28(6). |
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| Authors: | LI Jian-lin HU Shu-ju WANG Jian-fei XU Hong-hua |
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| Abstract: | The operation modes of a cascade H-bridge with 5 output voltage levels were analyzed by means of equivalent circuit.To meet the direct-driven wind power generation system's requirement for high power of converter,the cascade H-bridge converter was controlled by means of carrier wave phase shift sinuous pulse width modulation(CPS-SPWM).Comparisons were made between conventional CPS-SPWM and symmetric modulation method in realizing 5-level output.Simulations and tests have proven that the topological structure meets the requirements of direct-driven wind power generation system on the converter,demonstrating that the CPS-SPWM,which effectively reduces the converter output harmonics,regulates output waveform,widens signal transfer bandwidth in addition to output power promotion of the converter,is suitable for the converter in the system. |
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| Keywords: | energy and power system wind energy variable speed constant frequency wind power generation direct-driven high power converter |
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