三电平SVPWM与CBPWM算法的内在联系研究

发布时间：2018-01-16 11:16

本文关键词：三电平SVPWM与CBPWM算法的内在联系研究　出处：《电工技术学报》2014年10期 　论文类型：期刊论文

【摘要】：由于三电平中点钳位逆变器能有效提高逆变器系统容量和耐压水平,减少输出电压的谐波,所以其在中高压大容量电能变换领域中得到了广泛应用。为了揭示三电平中点钳位逆变器空间矢量脉宽调制(SVPWM)和载波脉宽调制(CBPWM)算法的内在联系,本文首先分析了三电平SVPWM算法的原理,并根据调制度的大小将整个线性调制范围分为3段,然后根据脉宽调制的规则采样法,分别推导出了3个调制段内与SVPWM等效的CBPWM调制函数形式。理论研究表明:三电平SVPWM算法是一种特殊形式的CBPWM算法。最后仿真和实验结果证明了理论分析的正确性和有效性。
[Abstract]:Because the three-level neutral-point clamped inverter can effectively improve the inverter system capacity and voltage level, reduce the harmonic output voltage. So it has been widely used in the field of high voltage and large capacity power conversion. In order to reveal the space vector pulse width modulation (SVPWM) and carrier pulse width modulation (CBPWM) of three-level neutral-point clamping inverter. The intrinsic connection of the algorithm. In this paper, the principle of three-level SVPWM algorithm is analyzed, and the whole range of linear modulation is divided into three segments according to the magnitude of modulation system, and then the regular sampling method based on pulse width modulation is used. The CBPWM modulation functions equivalent to SVPWM in three modulation segments are derived respectively. The theoretical study shows that:. The three-level SVPWM algorithm is a special CBPWM algorithm. The simulation and experimental results show that the theoretical analysis is correct and effective.
【作者单位】：西南交通大学电气工程学院;南车株洲电力机车研究所有限公司;
【基金】：国家自然科学基金—高铁联合基金(U11344205);国家自然科学基金(51207131、51277153) “十一五”国家科技支撑计划(2009BAG12A05)资助项目
【分类号】：TM464
【正文快照】： (1.Southwest Jiaotong University Chengdu 610031 China2.CSR Zhuzhou Electric Locomotive Research Institute Co.,Ltd.Zhuzhou 412001 China)1引言脉宽调制(Pulse Width Modulation,PWM)技术是交流调速系统的关键环节,其设计的好坏直接关系到整个系统的性能。在高速列车

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