Abstract
The expansion of automotive electronic system and the disadvantage of the conventional rectifier should not be ignored. To achieve unity power factor and complete the step-down rectification in single stage, this paper presents a new type of AC-DC matrix converter with 42V for automotives. It removed the impact of harmonics which is caused by the dead time and reduced the cost of the system. In this paper, the modulation strategy of AC-DC matrix converter derived from that of three-phase -three-phase matrix converter and the methods of commutation are studied. The optimized modulation strategy named AV method is used to control the switch-state. The four-step commutation strategy is a solution of the risks for short circuit, open circuit and the dead-time problem. The experimental results based on DSP system and the simulation results demonstrate the validity and effectiveness of the system.
| Original language | English |
|---|---|
| Pages (from-to) | 64-70 |
| Number of pages | 7 |
| Journal | Diangong Jishu Xuebao/Transactions of China Electrotechnical Society |
| Volume | 26 |
| Issue number | 8 |
| Publication status | Published - Aug 2011 |
| Externally published | Yes |
Keywords
- AC-DC converter
- Four-step current commutation
- Matrix converter
- Power factor
ASJC Scopus subject areas
- Electrical and Electronic Engineering