Design the Four Swtich Inverter Application for Micro-Grid

• Main Authors: TU,SHIH-CHIEH, 塗世傑
• Other Authors: 謝宗煌
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/b8bu2v

碩士 === 中華科技大學 === 機電光工程研究所在職專班 === 106 === "Electricity" is an indispensable necessity in the modern era. Many alternative energy sources have small capacity, do not have centralized equipment, and are decentralized power generation systems. Many power generation methods must be completed by converting the DC power into AC power so called inverters. This paper design a Four-Switch Inverter (FSI) that uses pulse width modulation to adjust the switching frequency of the positive and negative half-period switches. In this paper, there are two different switching frequencies that is the fundamental frequency (FF) of the power system and the high-frequency (HF) modulation frequency. The fundamental frequency switch is used to reduce the switching loss and improve overall output efficiency. The characteristics of this design circuits are flexibility, simple control, and reduced loss of handover surveys. This paper uses the PSIM simulation software to examine the effectiveness of the designed circuit and verify that the total harmonic distortion THD meets the standard.