摘要
提出了一种新颖的Buck/Boost单级逆变器主电路拓扑,它在输出电压峰值高于输入电压时也能实现逆变。详细分析了电路的工作原理,给出了采用固定开关频率瞬时电流控制策略时的控制方案。Buck/Boost单级逆变器运行于半周期模式,主电路中不存在环流。仿真和实验表明了Buck/Boost单级逆变器实现升压逆变的可行性。
A novel single-stage Buck/Boost inverter is proposed, which still works when the DC link voltage is lower than the AC voltage. The principles of the circuit are explained in detail. Fixed switching frequency SPWM instantaneous control with inductor-current feedback is adopted. The inverter operates in the half load cycle mode, with no power flow that is not reflected to the input and the output. The simulation and experiment results both indicate its feasibility.
出处
《电源技术应用》
2008年第4期43-47,共5页
Power Supply Technologles and Applications
关键词
逆变器
半周期运行模式
瞬时控制
inverter
half load cycle mode
instantaneous control
