A New Minimum DC Voltage Ripple Generating PWM Selection Algorithm for Voltage Source Inverter

IF 4.9 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Journal of Emerging and Selected Topics in Power Electronics Pub Date : 2024-09-30 DOI:10.1109/JESTPE.2024.3470337

Amol Ishwarrao Gedam;K. Ramachandra Sekhar;Nikhil Kumar

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Abstract

The voltage source inverters (VSIs) generate the average output voltage using the instantaneous switching voltage vector. The difference between the average output voltage and instantaneous switching voltage vector produces the error voltage, contributing to dc voltage ripple and dc source current ripple. In this work, a novel minimum dc voltage ripple generating pulsewidth modulation (PWM) selection algorithm is proposed for three phase two level VSI. To elicit the minimum dc voltage ripple, first, the dc capacitor current, dc voltage ripple, and dc source current ripple are mathematically modeled for a three-phase two-level VSI using an error voltage vector approach. Based on mathematical modeling, different continuous PWM (CPWM) and discontinuous PWMs (DPWMs) are compared to derive the minimum dc voltage ripple. After comparison, the minimum dc voltage ripple regions is identified for CPWMs and DPWMs in modulation index (

$m_{a}$

) and load angle (

$\delta $

) plane. Based on the identified regions, an adaptive switching PWM selection algorithm is proposed to ensure the minimum dc voltage ripple irrespective of the load operating conditions. The proposed method of selecting minimum voltage ripple yield PWMs is demonstrated on experimental prototype by implementing PWMs on DSP C2000 TMS320F28379D board.

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电压源逆变器的新型最小直流电压纹波产生 PWM 选择算法

电压源逆变器（vsi）利用瞬时开关电压矢量产生平均输出电压。平均输出电压与瞬时开关电压矢量之间的差产生误差电压，造成直流电压纹波和直流源电流纹波。本文提出了一种新的用于三相二电平VSI的最小直流电压纹波脉宽调制（PWM）选择算法。为了得到最小的直流电压纹波，首先，使用误差电压矢量方法对三相两电平VSI的直流电容电流、直流电压纹波和直流源电流纹波进行数学建模。在数学建模的基础上，对不同的连续PWM （CPWM）和不连续PWM （DPWMs）进行了比较，得出了最小直流电压纹波。通过比较，在调制指数（$m_{a}$）和负载角（$\delta $）平面上确定了CPWMs和DPWMs的最小直流电压纹波区域。在此基础上，提出了一种自适应开关PWM选择算法，以保证在任何负载运行条件下直流电压纹波最小。通过在DSP C2000 TMS320F28379D板上实现pwm，在实验样机上验证了所提出的选择最小电压纹波产率的方法。

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来源期刊

IEEE Journal of Emerging and Selected Topics in Power Electronics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

12.50

自引率

9.10%

发文量

547

审稿时长

3 months

期刊介绍： The aim of the journal is to enable the power electronics community to address the emerging and selected topics in power electronics in an agile fashion. It is a forum where multidisciplinary and discriminating technologies and applications are discussed by and for both practitioners and researchers on timely topics in power electronics from components to systems.