作　　者： ; ; ;

机构地区： 重庆大学电气工程学院输配电装备及系统安全与新技术国家重点实验室

出　　处： 《低压电器》 2010年第23期58-62,共5页

摘　　要： 研究了一种新型的三相单级Buck-Boost PFC变换器,用一个PWM信号同时控制4个开关管的通断状态,实现升/降压调压;基于交流侧的LC滤波实现了功率因数校正,并解决了传统的Buck-Boost变换器体积过大和输出电压反向的问题。介绍了变换器的工作原理并分析了稳态时的工作状况、输入电流谐波状况;设计了电压闭环控制系统;利用MATLAB/Simulink建立仿真模型,仿真结果验证了变换器的性能。 A novel single stage three-phase Buck-Boost PFC converter was introduced that could realize rise/ drop of the voltage by controlling 4 switches simultaneously with single PWM signal. It could obtain good power factor correction effect through applying LC filter in input side and solve the problems that the converter＇ s volume was too large and the output voltage was reversed existed in traditional Buck-Boost converter. Moreover, the eonverter＇s work principle, working condition during steady-state and the input current harmonies condition were analyzed. A voltage closed-loop control system was designed and a simulation model was established using MATLAB/Simulink. The simulation results verified the converter performances.

关 键 词： 宽范围电压输入 升降压 功率因数校正 输入电流谐波

领　　域： [电气工程] [自动化与计算机技术] [自动化与计算机技术]