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首页> 外文期刊>International Journal of Power Electronics and Drive Systems >Comparative Analysis of Different PWM Techniques to Reduce the Common Mode Voltage in Three-Level Neutral-Point-Clamped Inverters for Variable Speed Induction Drives
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Comparative Analysis of Different PWM Techniques to Reduce the Common Mode Voltage in Three-Level Neutral-Point-Clamped Inverters for Variable Speed Induction Drives

机译：降低变速感应驱动器三电平中性点钳位逆变器中共模电压的不同PWM技术的比较分析

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摘要

This work presents the comparative study of the different PWM techniques to reduce the common-mode voltage (CMV) at the output of neutral point diode clamped inverter for variable speed drives. Here the comparative study is done by the phase opposition disposed (POD), sinusoidal pulse width modulation (SPWM), phase disposition (PD), phase shift (PS) space vector modulation (SVM) techniques are proposed. A good trade-off between the quality of the output voltage and the partial magnitude of the CMV is achieved in this work. The scheme is proposed for three-level inverter. This work realizes the implementation of Three-level diode clamped MLI for three-phase (Y-Δ) induction motor with the implementation of a space vector modulation technique without any additional control algorithm to reduce CMV within the range + Vdc/6. The Simulation with a 1HP induction motor drive system is setup in Matlab-2011b and the same results validated effectively by hardware – FPGA-SPARTEN III processor and its shows that the CM voltage is effectively reduced and the maximum output voltage is not affected.
机译：这项工作提出了不同PWM技术的比较研究，以降低变速驱动器中性点二极管钳位逆变器输出的共模电压（CMV）。在这里，比较研究是通过相位逆置（POD），正弦脉冲宽度调制（SPWM），相位布置（PD），相移（PS）空间矢量调制（SVM）技术完成的。在这项工作中，可以在输出电压的质量和CMV的部分幅度之间取得良好的平衡。针对三电平逆变器提出了该方案。这项工作通过空间矢量调制技术的实现，实现了用于三相（Y-Δ）感应电动机的三电平二极管钳位MLI的实现，而无需任何其他控制算法即可将CMV减小到+ Vdc / 6范围内。在Matlab-2011b中设置了带有1HP感应电动机驱动系统的仿真，并且通过硬件– FPGA-SPARTEN III处理器有效地验证了相同的结果，该仿真表明CM电压得到有效降低，最大输出电压不受影响。

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