Abstract
Multi-level technology was introduced ten years ago. However, this technology is rarely applied to direct AC/AC converters. A three-level AC chopper is proposed, which is a multi-level direct AC/AC converter applied to high power conversion, and utilizes more voltage levels to form output voltage and decrease the harmonic content of output waveform. The detail operation principles are discussed, and a comprehensive analysis about the output voltage frequency structure is given. The analysis results of output voltage frequency structure can also be used in normal AC chopper. Experimental results on a prototype are provided to valid the proposed circuit.
| Original language | English |
|---|---|
| Pages (from-to) | 106-110 |
| Number of pages | 5 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 24 |
| Issue number | 6 |
| State | Published - Jun 2004 |
Keywords
- AC chopper
- Frequency structure analysis
- Power electronics
- Three-level
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