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首页> 外文会议>Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition >A new switching algorithm for voltage balancing of a three-level NPC in DTC drive of a three-phase IM
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A new switching algorithm for voltage balancing of a three-level NPC in DTC drive of a three-phase IM

机译：一种用于三相IM的DTC驱动中的三级NPC电压平衡的新开关算法

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摘要

In this paper, a new switching-table-based direct torque control (DTC) drive algorithm is proposed for the three-level neutral point clamped (NPC) inverter. The effect of converter switching states on the neutral point voltage is reviewed and then a new, simple and effective switching algorithm for controlling a three-phase induction motor using DTC is developed. In addition to simple implementation, the proposed algorithm is capable of restricting voltage deviation of the DC link capacitors in an acceptable range resulting in DC link voltage balancing. Simulation and experimental results demonstrating the effectiveness of the proposed method in controlling the neutral point voltage are provided. The proposed algorithm may lead to reduction of the size of the bulky dc link capacitors as well.
机译：本文针对三电平中性点钳位（NPC）逆变器，提出了一种新的基于切换表的直接转矩控制（DTC）驱动算法。回顾了转换器开关状态对中性点电压的影响，然后开发了一种新的，简单有效的使用DTC控制三相感应电动机的开关算法。除了简单的实现之外，所提出的算法还能够将直流链路电容器的电压偏差限制在可接受的范围内，从而实现直流链路电压平衡。仿真和实验结果证明了该方法在控制中性点电压方面的有效性。所提出的算法也可以导致体积减小的直流链路电容器的尺寸减小。

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