基于 SHEPWM与谐波补偿技术的混合逆变策略

Hybrid Inverter Strategy Based on SHEPWM and Harmonic Gompensation Technology

摘要:

文章介绍了谐波补偿器的结构特点及工作原理,研究论证了 SHEPWM技术应用于三相逆变系统消除指定谐波的有效性。将 SHEPWM与谐波补偿技术结合应用于逆变系统展开研究,充分拓展了谐波补偿器的应用价值,利用了 SHEPWM技术可应用于大功率场合的优点。分析了混合逆变系统的工作原理,介绍了其电路结构,推导并建立了逆变系统数学模型,仿真验证了混合逆变策略的可行性,特别是在抑制特定低次谐波方面效果显著。

Abstract:

This paper introduces the structural characteristics and working principle of harmonic compensator, and provesthe effectiveness of the SHEPWM technology applied to the three-phase inverter system to eliminate the specified harmon?ics. The combination of SHEPWM and harmonic compensation technology is applied to the inverter system, which fully ex?pands the application value of harmonic compensator, and takes advantages of the SHEPWM technology which can be ap?plied to high-power occasions. This paper analyzes the working principle of hybrid inverter system, introduces its circuitstructure, deduceds and establishes the mathematical model of the inverter system. The simulation verifies the feasibilityof the hybrid inverter strategy, which has a significant effect in suppressing specific low order harmonics.