| 基于SVPWM过调制策略的SRG风力发电系统并网逆变器 |
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| 引用本文： | 黄曌,易灵芝,彭寒梅,颜志刚,刘香.基于SVPWM过调制策略的SRG风力发电系统并网逆变器[J].电力自动化设备,2010,30(10). |
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| 作者姓名： | 黄曌 易灵芝 彭寒梅 颜志刚 刘香 |
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| 作者单位： | 湘潭大学,信息工程学院,湖南,湘潭,411105 |
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| 基金项目： | 国家自然科学基金资助项目(50977080); 教育部课题(2009-ZX-052); 湖南省自然科学基金资助项目(08JJ6029)~~ |
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| 摘 要： | 以四相8/6极开关磁阻发电机(SRG)为例,介绍了SRG工作原理以及实际工作中的饱和非线性,以傅里叶级数为工具建立非线性数学模型,并针对SRG发电系统的应用场合,采用了一种基于基波电压幅值线性输出控制的SVPWM过调制算法:在过调制区域内,引入幅值系数的概念,基于幅值系数和空间矢量图的顶点电压矢量,计算逆变器输出电压矢量与参考电压矢量的关系,并进一步推导出过调制区的基本电压矢量作用时间。该算法能有效解决对于SRG小功率发电系统,多电平逆变技术不适用,传统的两电平SVPWM算法控制精度又不够理想的问题。在Matlab平台进行仿真,结果表明,基于SVPWM过调制算法的逆变电路能将SRG的输出电能回馈电网,在动、静态环境中均能得到理想的输出电能质量。
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| 关 键 词： | 风力发电 开关磁阻发电机 电能质量 非线性建模 逆变器 SVPWM过调制 |
Grid-connected inverter of SRG wind power system based on SVPWM over-modulation scheme |
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| HUANG Zhao,YI Lingzhi,PENG Hanmei,YAN Zhigang,LIU Xiang.Grid-connected inverter of SRG wind power system based on SVPWM over-modulation scheme[J].Electric Power Automation Equipment,2010,30(10). |
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| Authors: | HUANG Zhao YI Lingzhi PENG Hanmei YAN Zhigang LIU Xiang |
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| Affiliation: | HUANG Zhao,YI Lingzhi,PENG Hanmei,YAN Zhigang,LIU Xiang(College of Information Engineering,Xiangtan University,Xiangtan 411105,China) |
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| Abstract: | The four-phase SRG(Switched Reluctance Generator) with 8 stator poles & 6 rotor poles is takenas an example for introducing the operating principle and actual nonlinearity of SRG. Its nonlinear mathe-matical model is established with Fourier series tool. As the multi-level inverter technology is not suitablefor SRG generation system and the control precision of two-level SVPWM is not perfect,a SVPWM over-modulation control algorithm based on fundamental voltage amplitude linear output control is presented:t... |
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| Keywords: | wind power generation switched reluctance generator energy quality nonlinear modeling inverter SVPWM over-modulation |
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