%0 Journal Article %T 谐波电流最小优化同步SVPWM方法研究<br>Research on Optimised Synchronous Space Vector Pulse Width Modulation Algorithm to Minimise Harmonic Current %A 张朝阳 %A 张晓华 %A 葛兴来 %A 冯晓云 %A 许峻峰< %A br> %A ZHANG Zhaoyang %A ZHANG Xiaohua %A GE Xinglai %A FENG Xiaoyun %A XU Junfeng %J 西南交通大学学报 %D 2017 %R 10.3969/j.issn.0258-2724.2017.04.015 %X 为解决大功率牵引逆变器在低载波比下输出电流谐波含量大的问题，以谐波电流有效值最小为优化指标，提出了一种基于空间电压矢量的优化同步PWM （space vector pulse width modulation， SVPWM）方法.首先，根据传统同步调制输出电压波形满足多种对称性的特点，提出一种通用的构造待优化空间矢量序列集合方法；其次，基于构造出的矢量序列集合，依次进行了单个矢量序列优化开关角度求解、整体优化求解和系统级优化选择；最后，将优化结果与基于相电压波形的优化PWM （pulse width modulation）方法进行比较，分析结果表明：该优化SVPWM方法将变量求解区间缩小了2/3；求解结果对迭代初值不敏感，对任意初值都能收敛到全局最优解.<br>： 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 root-mean-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 %K 空间电压矢量 %K 优化同步PWM %K 矢量序列 %K 开关角度 %K 谐波电流 %K < %K br> %K space voltage vector %K optimised synchronous PWM %K vector sequences %K switching angle %K harmonic current %U http://manu19.magtech.com.cn/Jweb_xnjd/CN/abstract/abstract12465.shtml