Analysis of Harmonic Characteristic PWM Inverter using 3-D Modulation Model

• Main Authors: Shin-Fu Lin, 林新富
• Other Authors: Wen-Shiow Kao
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/34569737305080518212

碩士 === 國立臺北科技大學 === 電機工程系碩士班 === 90 === The output voltage or current of PWM Inverter are not sinusoidal wave. It means the output of PWM Inverter has harmonic components, and it will bring huge damage for the electric circuit. Therefore, we have to analysis and calculate the harmonic spectrum of PWM Inverter drives used in the power system. In this thesis, analytical method based on a 3-D modulation model and double Fourier series (DFS) are introduced. The results of time-domain simulate by using Pspice and Simulink will be compared with the DFS method results by using Matlab for DC to AC PWM Inverter in the system. Results show simulator tools and DFS method have the same harmonic spectrum characteristic. The results also revealed that the harmonic current determined based on the proposed 3-D modulation model have accuracy highly.