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| 基于SVPWM的直驱式风电系统网侧变换器控制策略 |
| Study on the Control Strategy for Direct-drive Grid Side Converter in Wind Power System Based on SVPWM |
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| DOI：10.3969/j.issn.1671-5322.2012.01.010 |
| 中文关键词: 网侧变换器 线性化解耦 PR控制 空间电压矢量 |
| 英文关键词: grid side converter linearization decoupling PR control space voltage vector |
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| 中文摘要: |
| 对基于SVPWM调制的直驱式风电系统网侧变换器的控制策略进行了研究,变换器采用了三相电压源型PWM结构,对其进行了分析并基于电网电压矢量定向控制,提出采用旋转轴电流线性化解耦控制策略的网侧变换器的数学模型,在双环控制中,采用了一种新型的PR控制策略。仿真结果表明,该系统运行稳定,动态响应快,输出直流电压稳定,且脉动很小,各项性能优良。 |
| 英文摘要: |
| It is researched of control strategy suitable for direct-drive grid side converter in wind power system based on SVPWM.The topology with PWM six bridge arms powered by three-phase voltage is adopted.A mathematical model of the grid side SVPWM converter is established.Based on grid voltage oriented vector,the control strategy with dq axis current linearization decoupling and a novel P+resonant control strategies are adopted.The simulation results show that the system has excellent performance with the advantages of stable operation,fast transient response,stable output DC voltage and tiny ripple. |
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