Browse > Article

A Novel 11-Level PWM Inverter for Improving Output Voltage Waveform  

강필순 (부산대학교 전기공학과)
박성준 (동명대학 전기과)
김철우 (부산대학교 전자전기통신공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.8, no.2, 2003 , pp. 99-106 More about this Journal
Abstract
This paper presents a novel multilevel PWM inverter employing series-connected transformers in order to improve the waveshape of output voltage and to reduce its harmonics. The proposed 11-level inverter consists of three full-bridge inverter modules and their corresponding transformers. Among their inverter modules, one is used as PWM operation and the others as level generation. From a suitable selection of turns ratio of transformer, continuous output voltage levels were generated appearing an integral ratio to input DC source. Because of their series connection of transformers, output filter inductor is not necessary. The operational principles and analysis are explained, and it is compared with a conventional multilevel PWM inverter. The validity of the proposed system Is verified through the experimental results using a prototype.
Keywords
Multilevel PWM inverter; total harmonic distortion; transformer;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 A non conventional power converter for plasma stabilization /
[ M. Marchesoni(et al.) ] / IEEE/PESC '88
2 변압기 직렬 결합을 이용한 새로운 멀티 레벨 인버터 /
[ 박성준;강필순;박노식;김철우 ] / 전력전자학회 논문지   과학기술학회마을
3 Multi-level convertors a real solution to medium/high-voltage drives /
[ Newton, C.;Summer, M. ] / Power Engineering Journal
4 Determination of harmonics of converter current and/or voltage waveform (new method for fourier coefficient calculations) /
[ P.P. Bringer;M.A. Slonim ] / IEEE Trans. on industry Applications   DOI
5 Performance characteristics of a cascaded two-level converter /
[ Corzine, K.A.;Sudhoff, S.D.;Whitcomb, C.A. ] / IEEE Trans. on Energy Conversion   DOI
6 대용량 전압형 인버터의 기술동향 /
[ 서범석;현동석 ] / 전력전자학회지
7 산업용 인버터 하드웨어 기술 /
[ 김경서 ] / 전력전자학회지   과학기술학회마을
8 멀티레벨 인버터의 기술동향 및 제어특성 연구 /
[ 서광덕;김종규;박영민;조성준 ] / 전력전자학술대회 논문집