| 引用本文: | 吴在军,赵志宏,王宝安.并联混合型有源电力滤波器稳定性分析与控制[J].电力自动化设备,2011,31(7): |
| WU Zaijun,ZHAO Zhihong,WANG Baoan.Stability analysis and control of hybrid SAPF[J].Electric Power Automation Equipment,2011,31(7): |
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| 摘要: |
| 通过建立由并联型有源电力滤波器（SAPF）和并联电容器所组成的2种不同结构混合补偿系统的模型，分析了2种系统的稳定性。在此基础上，指出普通控制方式下的Ⅰ型系统是稳定的，且在投入SAPF以后可以较好地抑制谐振，但会存在“补偿盲区”，通过复合控制消除该“补偿盲区”，改善Ⅰ型系统的补偿效果。而如果在Ⅱ型系统中采用普通控制方式，系统会因为正反馈而不稳定，通过引入谐波频段有源阻尼的方法提高系统的稳定性，获得期望的补偿效果。Matlab ／ Simulink下的仿真结果证明了上述理论分析的正确性和所提方法的有效性。 |
| 关键词: 有源电力滤波器 电容器 混合补偿系统 系统稳定性 阻尼 |
| DOI： |
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| 基金项目:江苏省产学研前瞻性联合研究项目（BY2010142） |
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| Stability analysis and control of hybrid SAPF |
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WU Zaijun, ZHAO Zhihong, WANG Baoan
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Motion Control Engineering Research Center of MOE，School of Electrical Engineering，Southeast University，Nanjing 210096，China
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| Abstract: |
| Two structure models of hybrid compensation system composed of SAPF（Shunt Active Power Filter） and parallel capacitor are established and their system stabilities are analyzed. It is pointed out that，under normal control，model Ⅰ is stable and suppresses harmonics quite well after SAPF is put into operation while model Ⅱ is unstable because of the positive feedback. The compound control strategy is proposed for model Ⅰ to avoid its compensation dead zone while the active damping control is introduced for model Ⅱ to improve system stability. The simulations with Matlab／Simulink demonstrate the validity of theoretical analysis. |
| Key words: active filters capacitors hybrid compensation system system stability damping |
