| 摘要: |
| 针对传统桥式并网逆变器存在桥臂功率开关管的直通问题，提出了一族单相高可靠并网逆变器电路拓扑。所提并网逆变器是由高可靠性单元相互组合而成。分析了双极性和单极性调制高可靠并网逆变器的工作原理，归纳出了高可靠并网逆变器的构成原则。以单极性双降压全桥并网逆变器为例进行了仿真验证。比较分析了传统并网逆变器和所提高可靠并网逆变器。分析结果表明：双降压半桥并网逆变器适合110~120 V电网电压场合，而全桥型高可靠并网逆变器适合220~240 V电网电压场合。 |
| 关键词: 电路拓扑 逆变器 并网 高可靠性 全桥 半桥 |
| DOI：10.7667/j.issn.1674-3415.2013.20.021 |
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| 基金项目:国家自然科学基金项目（51107108，51377082）；江苏省高校自然科学研究项目（12KJB470013）资助；“青蓝工程”项目；省科技创新与成果转化资助项目(BY2012021) |
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| Single-phase high-reliability grid-connected inverter topologies |
| YAO Zhi-lei1,XIAO Lan2 |
| () |
| Abstract: |
| A family of single-phase high-reliability grid-connected inverter topology is proposed to solve the shoot-through problem in conventional bridge-type grid-connected inverters. The proposed grid-connected inverters are deduced from the high-reliability cells. The operating principles of the proposed high-reliability grid-connected inverters with bipolar and unipolar modulations are illustrated. The constituent principle of the high-reliability grid-connected inverters is concluded. The simulation results of a dual-buck full-bridge grid-connected inverter with unipolar modulation verify the theoretical analysis. The comparison between the high-reliability grid-connected inverter and traditional grid-connected inverter shows that the dual-buck half-bridge grid-connected inverter is suitable for 110~120 V grid-voltage applications and the full-bridge type high-reliability grid-connected inverters are promising in 220~240 V grid-voltage applications. |
| Key words: circuit topologies inverter grid-connected high reliability full bridge half bridge |
