精品文档---下载后可任意编辑一种具有大范围升-降压功能的新型单级逆变电路中期报告摘要：本文介绍了一种具有大范围升-降压功能的新型单级逆变电路。该电路采纳全桥逆变器结构，具有高效率、低开关噪音和卓越的功率因数。在正常工作状态下，逆变输出电压随输入电压的变化而变化，并保持稳定。在电网电压较低或过低的情况下，电路通过控制半桥开关实现升压功能，逆变输出电压随之升高；在电网电压较高或过高的情况下，电路通过控制全桥开关实现降压功能，逆变输出电压随之降低。仿真结果表明，该电路具有快速响应、稳定性好、输出纹波小等优点。关键词：单级逆变器；全桥逆变器；升-降压功能；功率因数；纹波Abstract:This paper introduces a new single-stage inverter circuit with a large range of boost-buck function. The circuit adopts a full bridge inverter structure, which has high efficiency, low switching noise and excellent power factor. Under normal working conditions, the inverter output voltage varies with the input voltage and remains stable. When the grid voltage is low or too low, the circuit realizes the boost function by controlling the half-bridge switch, and the inverter output voltage rises accordingly; when the grid voltage is high or too high, the circuit realizes the buck function by controlling the full-bridge switch, and the inverter output voltage decreases accordingly. Simulation results show that the circuit has the advantages of fast response, good stability, and small output ripple.Key words:Single-stage inverter; Full-bridge inverter; Boost-buck function; Power factor; Ripple
