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논문 기본 정보

자료유형
학술저널
저자정보
Mahrous E. Ahmed (South Valley University) Saad Mekhilef
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.9 No.4
발행연도
2009.7
수록면
593 - 603 (11page)

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This paper proposes and describes the design and operational principles of a three-phase three-level nine switch voltage source inverter. The proposed topology consists of three bi-directional switches inserted between the source and the full-bridge power switches of the classical three-phase inverter. As a result, a three-level output voltage waveform and a significant suppression of load harmonics contents are obtained at the inverter output. The harmonics content of the proposed multilevel inverter can be reduced by half compared with two-level inverters. A Fourier analysis of the output waveform is performed and the design is optimized to obtain the minimum total harmonic distortion. The full-bridge power switches of the classical three-phase inverter operate at the line frequency of 50㎐, while the auxiliary circuit switches operate at twice the line frequency. To validate the proposed topology, both simulation and analysis have been performed. In addition, a prototype has been designed, implemented and tested. Selected simulation and experimental results have been provided.

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ABSTRACT
1. Introduction
2. The Proposed Inverter Topology
3. The Operational Principals
4. Analysis of the Optimized Waveform
5. Results and Discussions
6. Conclusions
References

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