Analysis of effective discontinuous decoupled PWMS for a four-level open end winding induction motor drive through stator flux ripple

IF 0.4 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY

International Journal of Electric and Hybrid Vehicles Pub Date : 2020-01-01 DOI:10.1504/IJEHV.2020.10035282

Kalyan Kumar Koppolu, K. Anuradha, M. S. Kalvathi

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引用次数: 0

Abstract

Dual inverter fed open-end 3O induction motor drive (OEW-IMD) with different dc-link voltages can perform four-level (4L) realisation. Now the earlier scheme operates with high conduction losses and dv/dt at particular voltage symmetries that effects overall efficiency. This paper proposes the effective discontinuous decoupled SVPWM (EDDPWM) scheme, which deals the DD-PWM with a concept of effective time employment to high voltage side inverter and low voltage side inverter independently that are labelled as EDDPWM-1 and EDDPWM-2, respectively. A factor variable k relating to active time of vectors application is presented. For k is varied from 10% to 100% of individual inverters that effects both individual and net inverter voltage vectors of a dual inverter. Therefore, the effect of factor k on ripple content, harmonic spectra of motor currents for insight of torque ripple, and different characteristics are analysed. These proposed methods achieved flexible performance enhancement compared to previous methods.

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通过定子磁链脉动驱动四电平开口绕组感应电机的有效不连续解耦PWMS分析

具有不同直流电压的双逆变器馈电开放式30o感应电机驱动器(OEW-IMD)可以实现四电平(4L)实现。现在，早期的方案在特定的电压对称性下具有高导通损耗和dv/dt，这会影响整体效率。本文提出了一种有效的不连续解耦SVPWM (EDDPWM)方案，该方案采用对高压侧逆变器和低压侧逆变器分别进行有效时间利用的概念来处理DD-PWM，分别称为EDDPWM-1和EDDPWM-2。提出了与矢量应用的有效时间有关的因子变量k。因为k在单个逆变器的10%到100%之间变化，影响双逆变器的单个逆变器和净逆变器电压矢量。因此，分析了k因子对纹波含量的影响、电机电流谐波谱对转矩纹波的影响以及不同特性。与以前的方法相比，这些方法实现了灵活的性能增强。

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来源期刊

International Journal of Electric and Hybrid Vehicles TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

1.60

自引率

14.30%

发文量

期刊介绍： IJEHV provides a high quality, fully refereed international forum in the field of electric and hybrid automotive systems, including in-vehicle electricity production such as hydrogen fuel cells, to describe innovative solutions for the technical challenges enabling these new propulsion technologies.