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级联H桥多电平逆变器中用于可变输出电压应用的PSO优化SHE-PWM技术

PSO-Optimized SHE-PWM Technique in a Cascaded H-Bridge Multilevel Inverter for Variable Output Voltage Applications

语言:

中文摘要

选择性谐波消除脉宽调制(SHE-PWM)方法在宽范围输出电压调节中存在可行解范围受限的问题。在低调制指数下,输出谐波畸变会显著增加。本文提出了一种基于粒子群优化(PSO)的改进SHE-PWM技术,旨在解决级联H桥多电平逆变器在宽范围电压输出下的谐波抑制难题,提升系统电能质量。

English Abstract

One of the problems of the selective harmonic elimination pulsewidth modulation (SHE-PWM) method is a limited range of feasible solutions. In many practical applications, the inverter is required to produce a variable output voltage within a wide range (e.g., 0.1 to 1). When the inverter operates in a low modulation index (low output voltage), the output harmonic distortion increases. This article...
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SunView 深度解读

该技术对阳光电源的组串式逆变器及大型储能PCS产品具有重要参考价值。随着光伏与储能系统对电网支撑要求的提高,多电平拓扑在提升效率与降低谐波方面优势明显。SHE-PWM技术结合PSO优化,可有效解决逆变器在宽电压范围(如光伏MPPT宽范围调节或储能电池电压波动)下的谐波控制难题。建议研发团队关注该算法在复杂电网环境下的动态响应性能,将其应用于新一代高功率密度逆变器控制策略中,以进一步优化输出电能质量并降低滤波器体积。