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A Reduced Switch Five-Level VSI for High-Performance Vector Controlled PMSM Drive

机译：用于高性能矢量控制PMSM驱动器的减少的开关五级VSI

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摘要

This work presents the strategy for vector control of permanent magnet synchronous motor (PMSM) drive fed with a three-phase multi-level voltage source inverter for high performance. In the present work, the traditional 2-level inverter is replaced with a novel reduced switch 5-level inverter, and comparative analysis is done. The implementation of the five-level inverter improves the torque, stator current, and mechanical dynamics of the drive. Here PWM technique is employed to generate the gate pulses for switching devices in a planned sequence to obtain five-level output voltage. The 12 operating modes are defined for reduced switch 5-level inverter that produces voltages as 0, ±2Vdc/3, ±Vdc, ±4Vdc/3 with reduced total harmonics distortion (THD). The close-loop vector control of PMSM with developed five-level inverter is implemented to improve the performance of drive in terms of rise time, settling time, stator current harmonics. The overall system is developed in MATLAB/Simulink and investigations are done in different input command and loading conditions. An extensive simulation study and analysis of results reveal the potential of the present work. This work mainly focuses on the reduction of motor electromagnetic torque pulsations along with improved speed response.
机译：该工作介绍了通过三相多电平电压源逆变器供给的永磁同步电动机（PMSM）驱动器的矢量控制策略，用于高性能。在本作工作中，传统的2级逆变器用新颖的减少的开关5级逆变器代替，并完成了比较分析。五层逆变器的实施改善了驱动器的扭矩，定子电流和机械动态。这里采用PWM技术来生成用于在计划序列中切换设备的栅极脉冲，以获得五级输出电压。为减小的开关5电平逆变器定义了12个操作模式，其产生电压为0，±2VDC / 3，±VDC，±4VDC / 3，具有减少的总谐波失真（THD）。采用开发的五电平逆变器的PMSM闭环矢量控制被实施为在上升时间，稳定时间，定子电流谐波方面提高驱动的性能。整个系统是在MATLAB / SIMULINK和SIMULINK和SIMULINK中开发的，并在不同的输入命令和加载条件下进行调查。广泛的仿真研究和对结果的分析揭示了本作工作的潜力。这项工作主要集中在减少电机电磁扭矩脉动以及改善的速度响应。

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