Study and Implementation of a Single-Phase Diode- Clamped Five-Level Inverter with Auto Equalization

2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT) Pub Date : 2018-10-01 DOI:10.1109/ACEPT.2018.8610660

Shih-Hao Kuo, Zheng-An Lin, Yi-Hua Liu, Y. Hsieh, H. Chiu

{"title":"Study and Implementation of a Single-Phase Diode- Clamped Five-Level Inverter with Auto Equalization","authors":"Shih-Hao Kuo, Zheng-An Lin, Yi-Hua Liu, Y. Hsieh, H. Chiu","doi":"10.1109/ACEPT.2018.8610660","DOIUrl":null,"url":null,"abstract":"In this paper, a stand-alone single-phase diode-clamped five-level inverter is studied and implemented. This prototype circuit makes the input voltage shared by series-connected switching devices. Besides, this topology needs clamped diodes to clamp the voltage on the MOSFETs. On the other hand, the control signals of the power devices are generated by sinusoidal pulse-width-modulation (SPWM). The desired output voltage can be modulated by the amplitude modulation index. The circuit operation naturally causes the input capacitor voltages unbalance. Accordingly, a switched-capacitor charge equalization technique is implemented to solve the imbalance problem.A prototype circuit with the switched-capacitor equalizer has been built and tested successfully in this paper. The circuit is with rated power of 630 W, 800 V input voltage, and 230 V output voltage. A digital-signal processor chip is used to realize the controller of this inverter. The measured efficiency is always higher than 90% within the overall range of load conditions.","PeriodicalId":296432,"journal":{"name":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ACEPT.2018.8610660","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

In this paper, a stand-alone single-phase diode-clamped five-level inverter is studied and implemented. This prototype circuit makes the input voltage shared by series-connected switching devices. Besides, this topology needs clamped diodes to clamp the voltage on the MOSFETs. On the other hand, the control signals of the power devices are generated by sinusoidal pulse-width-modulation (SPWM). The desired output voltage can be modulated by the amplitude modulation index. The circuit operation naturally causes the input capacitor voltages unbalance. Accordingly, a switched-capacitor charge equalization technique is implemented to solve the imbalance problem.A prototype circuit with the switched-capacitor equalizer has been built and tested successfully in this paper. The circuit is with rated power of 630 W, 800 V input voltage, and 230 V output voltage. A digital-signal processor chip is used to realize the controller of this inverter. The measured efficiency is always higher than 90% within the overall range of load conditions.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

具有自动均衡功能的单相二极管箝位五电平逆变器的研究与实现

本文研究并实现了一种独立的单相二极管箝位五电平逆变器。该原型电路使串联开关器件共享输入电压。此外，这种拓扑结构需要箝位二极管来箝位mosfet上的电压。另一方面，功率器件的控制信号由正弦脉宽调制(SPWM)产生。所需要的输出电压可以通过调幅指数来调制。电路运行自然会导致输入电容电压不平衡。因此，采用开关电容电荷均衡技术来解决不平衡问题。本文建立了开关电容均衡器的原型电路，并成功地进行了测试。该电路的额定功率为630w，输入电压为800v，输出电压为230v。该逆变器的控制器采用数字信号处理芯片实现。在整个负载工况范围内，实测效率均高于90%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

2018 Asian Conference on Energy, Power and Transportation Electrification (ACEPT)

自引率

0.00%

发文量