| 引用本文: | 徐榕,于泳,杨荣峰,于雁南,徐殿国.H桥级联STATCOM自适应死区补偿方法[J].哈尔滨工业大学学报,2015,47(9):1.DOI:10.11918/j.issn.0367-6234.2015.09.001 |
| XU Rong,YU Yong,YANG Rongfeng,YU Yannan,XU Dianguo.Adaptive dead-time compensation of H-bridge cascaded STATCOM[J].Journal of Harbin Institute of Technology,2015,47(9):1.DOI:10.11918/j.issn.0367-6234.2015.09.001 |
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| 摘要: |
| 为消除死区效应对H桥级联静止同步补偿器（STATCOM）输出电压及电流的影响,提出一种新的死区补偿方法. 根据离散扰动观测器的工作原理,设计相应的观测器,对由于死区效应引起的STATCOM输出电压与参考电压的差值进行实时在线观测,并将观测到的差值作为补偿量,引入到无差拍控制系统中,实现对死区的自适应补偿. 仿真与实验结果表明,该方法可以有效地提高死区补偿效果,消除零点电流箝位现象,降低STATCOM输出电流的谐波含量. |
| 关键词: H桥级联 静止同步补偿器 无差拍控制 死区补偿 离散扰动观测器 |
| DOI：10.11918/j.issn.0367-6234.2015.09.001 |
| 分类号:TM76 |
| 基金项目:国家自然科学基金重点项目(51237002)；台达电力电子科教发展计划重大项目(DREM2012001). |
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| Adaptive dead-time compensation of H-bridge cascaded STATCOM |
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XU Rong, YU Yong, YANG Rongfeng, YU Yannan, XU Dianguo
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(School of Electrical Engineering and Automation,Harbin Institute of Technology, 150001 Harbin, China )
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| Abstract: |
| In this paper, in order to eliminate the effect of STATCOM dead-time effect on the voltage and current, a new dead-time compensation method was proposed. According to the principle of discrete-time disturbance observer, corresponding observer was designed. The D-value of STATCOM output voltage and reference voltage caused by dead-time effect can be real-time observed on line. The D-value as a compensation value feeds back to the dead-beat control system to realize the self-adaption dead-time compensation. Simulation and experimental results show that it can effectively improve the effect of dead-time compensation, eliminate the phenomenon of the zero current clamping, and reduce current harmonic content of STATCOM. |
| Key words: H-bridge cascaded static synchronous compensator dead-beat control dead-time compensation discrete-time disturbance observer |
