应用于VSI的不连续PWM策略分析

2007 International Symposium on Computational Intelligence and Intelligent Informatics Pub Date : 2007-03-28 DOI:10.1109/ISCIII.2007.367376

S. Belbaz, M. Kadjoudj, N. Goléa

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引用次数: 11

摘要

全数字交流驱动与脉宽调制器逆变器正在成为一个工业标准。对于PWM逆变器，最常用的是传统的正弦PWM (SPWM)。通过引入不连续技术，尝试改进这种基于载波的策略;如死区PWM (DBPWM)和改进的SPWM (MSPWM)。用逆变器输出电压基频调制指标、负载电流畸变系数、转矩谐波、开关频率对变流器损耗的影响等性能指标来评价其特性和质量。

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Analysis of the Discontinuous PWM Strategies Applied to the VSI

Fully digital AC drives with pulse width modulator inverters are becoming an industrial standard. For PWM inverters the most commonly used is the conventional sine PWM (SPWM). An attempt to improve this carrier based strategy is presented by means of the introduction of discontinuous techniques; such as the dead band PWM (DBPWM) and the modified SPWM (MSPWM). Their characteristics and qualities are evaluated by some performance criteria such as, modulation index concerning the inverter output voltage fundamental, the distortion factor of the load current, torque harmonics, and the influence of the switching frequency upon losses in the converter.

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2007 International Symposium on Computational Intelligence and Intelligent Informatics

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