Abstract
A novel single-stage series-resonant Buck-Boost inverter is proposed in this paper, which can generate a sine ac output voltage larger or lower than the input one in a single stage. The operation principle is analyzed in detail and the mathematics model is founded by the state-space average method. Based on discontinuous conduction mode (DCM), the new inverter circuit topology provides all the switches for turn-on and the auxiliary switches for turn-off at zero current switching (ZCS) by a series-resonant tank, so that the switching loss is reduced and system effeciency is improved. An improved SPWM control method employing a sine modulation wave with dc bias value is presented to optimize the inverter performance. The proposed control method eliminates the output voltage zero-crossing distortion as caused by linear approximation in traditional SPWM method. Laboratory experimental results from a 1kW prototype are given to verify the validity and effectiveness of the proposed inverter.
| Original language | English |
|---|---|
| Pages (from-to) | 65-71 |
| Number of pages | 7 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 27 |
| Issue number | 16 |
| State | Published - 5 Jun 2007 |
Keywords
- Buck-boost
- Inverter
- Series-resonant
- Spwm
- State-space average
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