Comparative investigation of PWM techniques for general motors' new drive for electric vehicles

Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344) Pub Date : 2002-12-10 DOI:10.1109/IAS.2002.1043808

A. Trzynadlowski, Zhiqiang Wang, J. Nagashima, C. Stancu

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引用次数: 9

Abstract

Results of a comparative investigation of deterministic and random PWM techniques to be employed in a new AC drive system for electric vehicles, currently under development at General Motors Company, are presented. The study, employing the advanced simulation package SABER from Avant! Corp., was focused on the reduction of electromagnetic interference (EMI) when a deterministic PWM strategy is replaced with a random PWM (RPWM) method. To assess the impact of the PWM technique on the drive performance, the drive efficiency, torque ripple, and dynamic response of the current control system were also investigated. Two RPWM techniques with randomly varied switching frequency of the inverter were considered: one with the sampling frequency of the modulator varying in step with the switching frequency, and one with a fixed sampling frequency equal to the average switching frequency. The study has demonstrated good potentials of RPWM techniques, whose use results in EMI reduction by 10 dB and more, while the drive performance is barely affected.

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通用汽车新型电动汽车驱动PWM技术的比较研究

本文介绍了通用汽车公司正在开发的一种新型电动汽车交流驱动系统中采用的确定性和随机PWM技术的对比研究结果。这项研究，采用先进的模拟包SABER从Avant!当确定性PWM策略被随机PWM (RPWM)方法取代时，该公司专注于减少电磁干扰(EMI)。为了评估PWM技术对驱动性能的影响，还研究了电流控制系统的驱动效率、转矩脉动和动态响应。考虑了逆变器开关频率随机变化的两种RPWM技术:一种是调制器采样频率随开关频率同步变化，另一种是采样频率等于平均开关频率的固定采样频率。该研究已经证明了RPWM技术的良好潜力，其使用结果是EMI降低了10 dB以上，而驱动性能几乎没有受到影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)

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