三相逆变器无死区最优矢量控制研究

发布时间：2018-03-10 18:47

本文选题：免疫算法　切入点：无死区　出处：《电力系统保护与控制》2014年24期 　论文类型：期刊论文

【摘要】：目前死区时间补偿、减少死区时间和无死区控制是关于三相逆变器中死区影响的主要研究方向。在分析了多种死区控制策略局限性的基础上,提出了一种新型基于免疫算法的逆变器无死区优化算法。该方法的创新之处是采用的SVPWM划分扇区和优化无死区控制方案,不需要精确的电流极性检测装置。对新控制策略进行大量仿真研究,仿真结果证明该算法所产生最优SVPWM控制序列与常规控制策略相比不仅无需设置死区时间,还能明显减小逆变器输出波形的总谐波畸变率和提高输出电压基波幅值。
[Abstract]:At present, dead-time compensation, reduction of dead-time and no-dead-time control are the main research directions on dead-time effect of three-phase inverter. Based on the analysis of the limitations of various dead-time control strategies, A novel dead-time optimization algorithm for inverter based on immune algorithm is proposed. The innovation of this method is that SVPWM is used to divide sectors and optimize dead-time control schemes. There is no need for accurate current polarity detection device. A large number of simulation studies are carried out on the new control strategy. The simulation results show that the optimal SVPWM control sequence produced by the algorithm does not need to set dead-time compared with the conventional control strategy. It can also reduce the total harmonic distortion rate of the output waveform and increase the fundamental amplitude of the output voltage.
【作者单位】：武汉大学电气工程学院;
【基金】：国家自然科学基金(50807041) 武汉市科技攻关计划(2013060501010164) 武汉市青年科技晨光计划资助项目(2013070104010010)~~
【分类号】：TM464

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