单周控制无桥Pseudo-Boost PFC变换器  

One-cycle controlled bridgeless Pseudo-Boost PFC converter

作　　者：曹太强[1] 黄俊[2] 王军[1] 孙章[1] 游芳[1] 罗谦[3] 

机构地区：[1]西华大学电气信息学院,四川成都610039 [2]国家电网公司西藏尼洋河流域水电开发公司,西藏灵芝860000 [3]中国民用航空总局民第二研究所信息公司,四川成都610041

出　　处：《电机与控制学报》2014年第4期6-10,共5页Electric Machines and Control

基　　金：四川省科技厅应用基础研究项目(2012JY0120/12209596);四川省科技厅支撑项目(2013GZ0130);四川省重大技术装备创新研制项目(川财建[2013]153号);四川省教育厅重点项目(11ZA003/11209435);四川省高校重点实验室项目;四川省教育厅成果培育项目基金资助(12ZZ007);西华大学重点科研基金(Z1120940)

摘　　要：本文研究了一种新型无桥Pseudo-Boost功率因数校正(Power Factor Correction,PFC)变换器,变换器完全消除了传统Boost PFC变换器的整流桥,无桥Pseudo-Boost PFC变换器存在谐振支路,但却呈现出PWM变换器的性质;分析了无桥Pseudo-Boost PFC变换器的工作原理,在交流输入电压正半周或是负半周内,具有传统Boost PFC变换器的特性,其电压传输比与谐振支路参数无关。为了验证该新型变换器的有效性,采用了单周控制策略的数字控制实现方案,仿真和实验表明,该变换器直流输出电压稳定,交流输入电流与输入电压相位相同,功率因数可达到1,具有PFC变换器的功能。A bridgeless pseudo-boost power factor correction （ PFC） converter is presented in this paper, which completely eliminates the diode rectifier bridge existed in the conventional boost PFC converter. The proposed converter has the characteristics of conventional PWM converter, and its voltage transfer ra-tio is similar to that of conventional boost converter, with no relation to resonant parameters and switching frequency, although it has resonant branch. The principle of Pseudo-Boost PFC converter was analyzed. It shows a traditional Boost PFC converter features whether in the AC input voltage of positive half cycle or in negative half cycle. To verify the validity of the proposed converter, digital control scheme of the control strategy in one cycle control was applied. The simulation and experimental results show that the proposed converter output voltage stability, AC input current and voltage phase is the same, the power factor can reach 1, and with the function of the PFC converter.

关 键 词：无桥功率因数校正 Pseudo-Boost变换器 单周控制 数字控制 

分 类 号：TM461[电气工程—电器]