| 引用本文: | 徐 榕,于 泳,杨荣峰,于雁南,徐殿国.H桥级联STATCOM直流侧电容电压平衡控制方法[J].电力自动化设备,2015,35(5): |
| XU Rong,YU Yong,YANG Rongfeng,YU Yannan,XU Dianguo.DC capacitor voltage balance control of H-bridge cascaded STATCOM[J].Electric Power Automation Equipment,2015,35(5): |
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| 摘要: |
| H桥级联静止同步补偿器（STATCOM）直流侧电容电压的波动，会引起系统直流侧母线电压不平衡，从而影响系统的可靠运行。针对该问题，在直流侧电容电压三级平衡控制策略的基础上，采用比例谐振（PR）控制器对全局平均直流电压进行控制，以提高控制效果；采用自抗扰控制器（ADRC）对相间直流电压进行平衡控制，实现对外界扰动的动态补偿；采用上下平移每个功率单元调制波的方法，实现相内直流电压平衡控制，并配合载波相移调制策略（CPS-PWM），易于FPGA数字实现。实验结果表明，提出的控制方法是有效的，且具有良好的动态性能和较强的鲁棒性。 |
| 关键词: H桥级联 静止同步补偿器 直流侧电容电压平衡 比例谐振控制 自抗扰控制 调制波平移 控制 |
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| 基金项目:国家自然科学基金重点资助项目（51237002）；台达电力电子科教发展计划重大项目（DREM2012001） |
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| DC capacitor voltage balance control of H-bridge cascaded STATCOM |
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XU Rong, YU Yong, YANG Rongfeng, YU Yannan, XU Dianguo
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Department of Electrical Engineering，Harbin Institute of Technology，Harbin 150001，China
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| Abstract: |
| The DC capacitor voltage fluctuation of H-bridge cascaded STATCOM will induce the DC voltage imbalance and influence the reliable system operation，aiming at which，the PR（Proportional Resonant） controller based on the three-level balance control strategy of DC capacitor voltage is adopted to improve the average global DC voltage control；the ADRC（Active Disturbance Rejection Controller） is applied to realize the inter-phase DC voltage balance control and the dynamic compensation for outside disturbance；the modulation wave of each power unit is translated to realize the in-phase DC voltage balance control and，combined with the CPS-PWM（Carrier Phase Shifting PWM），to facilitate the FPGA digital realization. Experimental results show that，being effective，the proposed control method has good dynamic performance and strong robustness. |
| Key words: H-bridge cascading static synchronous compensator DC capacitor voltage balancing proportional resonant control active disturbance rejection control modulation wave translation control |
