海南师范大学学报（自然科学版）
海南師範大學學報（自然科學版）
해남사범대학학보（자연과학판）
JOURNAL OF HAINAN NORMAL UNIVERSITY(NATURAL SCIENCE)
2015年
1期
37-40
,共4页
逆变器%正弦波脉宽调制%光伏%高效率
逆變器%正絃波脈寬調製%光伏%高效率
역변기%정현파맥관조제%광복%고효솔
inverter%SPWM%photovoltaic%high efficiency
以单相正弦波驱动模块EGS002为核心器件，研究一种采用直流324~408V供电的高效率光伏逆变器。介绍了该光伏逆变系统的结构和单极性脉宽调制原理，对模块电路进行了详细的分析。实验测试表明，设计的光伏逆变器输出220V/50Hz交流电，转换效率大于98%，输出正弦波稳定，总谐波失真较小、工作性能可靠，还具有过压、欠压、过流和过热保护等功能。
以單相正絃波驅動模塊EGS002為覈心器件，研究一種採用直流324~408V供電的高效率光伏逆變器。介紹瞭該光伏逆變繫統的結構和單極性脈寬調製原理，對模塊電路進行瞭詳細的分析。實驗測試錶明，設計的光伏逆變器輸齣220V/50Hz交流電，轉換效率大于98%，輸齣正絃波穩定，總諧波失真較小、工作性能可靠，還具有過壓、欠壓、過流和過熱保護等功能。
이단상정현파구동모괴EGS002위핵심기건，연구일충채용직류324~408V공전적고효솔광복역변기。개소료해광복역변계통적결구화단겁성맥관조제원리，대모괴전로진행료상세적분석。실험측시표명，설계적광복역변기수출220V/50Hz교류전，전환효솔대우98%，수출정현파은정，총해파실진교소、공작성능가고，환구유과압、흠압、과류화과열보호등공능。
This paper takes single-phase sine wave drive module EGS002 as a core component to study a high efficiency photovoltaic inverter, which adopts power supply of DC 324-408 V. Structure and unipolar pulse width modulation of the photovoltaic inverter system, and the modular circuit are specified. The experimental test shows that the photovoltaic inverter outputs alternating current of 220 V/50 Hz;its conversion efficiency is greater than 98%;its output sine wave is stable;its to?tal harmonic distortion is relatively small and its working performance is reliable. It also has the functions of overvoltage pro?tection, undervoltage protection, overcurrent protection and overtemperature protection.
