Performance Analysis of Carrier-Based Discontinuous PWM Method for Vienna Rectifiers With Neutral-Point Voltage Balance
Performance Analysis of Carrier-Based Discontinuous PWM Method for Vienna Rectifiers With Neutral-Point Voltage Balance
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DOI：
10.1109/tpel.2015.2477828
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发表时间：
2016-06
影响因子：
6.7
通讯作者：
June-Seok Lee;Kyo-Beum Lee
中科院分区：
文献类型：
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作者：
June-Seok Lee;Kyo-Beum Lee
被称为维也纳整流器的非发电升压型整流器在效率和电流总谐波失真方面是有利的。因此，维也纳整流器用于电网连接应用，如电信系统和风力涡轮机系统。由于维也纳整流器的结构特征，存在各种开关方法。在这些方法中，基于载波的不连续脉宽调制（CB-DPWM）方法与连续脉宽调制方法相比确保了高效率，并且与基于空间矢量的DPWM方法相比简单。本文详细分析了CB-DPWM方法的性能、功率因数和调制指数（Ma）对CB-DPWM方法的适用范围以及CB-DPWM方法的效率。然后，在分析的基础上，提出了CB-DPWM方法的中点电压平衡方法。仿真和实验结果验证了该方法的有效性和性能。
The nongenerative-boost type rectifier, which is called the Vienna rectifier, is advantageous in terms of efficiency and current total harmonic distortion. Therefore, the Vienna rectifier is used in grid-connected applications such as telecommunication systems and wind turbine systems. Owing to the structural characteristics of the Vienna rectifier, various switching methods exist. Among these methods, a carrier-based discontinuous pulse-width modulation (CB-DPWM) method guarantees high efficiency compared to continuous pulse-width modulation methods; moreover, it is simple compared to a DPWM method based on space vectors. In this paper, the performance of the CB-DPWM method, its applicable region depending on the power factor and modulation index (Ma), and its efficiency are analyzed in detail. Then, based on the analysis, a neutral-point voltage balancing method for the CB-DPWM method is proposed. The effectiveness and performance of the proposed neutral-point voltage balancing method are verified by simulation and experiment.