西南交通大学学报2017，Vol.52Issue(4)：764-773,788,11.DOI:10.3969/j.issn.0258-2724.2017.04.015
谐波电流最小优化同步SVPWM方法研究
Research on Optimised Synchronous Space Vector Pulse Width Modulation Algorithm to Minimise Harmonic Current
摘要
Abstract
One of the major concerns with regard to high-power traction inverters is the current harmonics that arise when working under the condition of low pulse ratios.To solve this problem, an optimized synchronous space vector pulse width modulation (SVPWM) was proposed to minimize rootmean-square (RMS) value of harmonic currents.On the basis of symmetry constraints of the output voltage waveforms in the traditional synchronous SVPWM, a generalized method was proposed to construct switching vector sequences.Using the constructed switching sequences set, the switching angle of a single vector sequence was optimized, and an overall optimization solution and system-level optimization selection were executed.Compared with the phase-voltage-oriented optimization pulse width modulation (PWM), the proposed optimized synchronous SVPWM algorithm can reduce 2/3 range of the solution set, and achieve convergence to the global optimal solution at any given initial value of the iteration, regardless of the initial value.关键词
空间电压矢量/优化同步PWM/矢量序列/开关角度/谐波电流Key words
space voltage vector/optimised synchronous PWM/vector sequences/switching angle/harmonic current分类
信息技术与安全科学引用本文复制引用
张朝阳,张晓华,葛兴来,冯晓云,许峻峰..谐波电流最小优化同步SVPWM方法研究[J].西南交通大学学报,2017,52(4):764-773,788,11.基金项目
国家自然科学基金资助项目(51677156) （51677156）
