基于有源功率因数校正的高功率因数电源设计.pdf

基于有源功率因数校正的高功率因数电源设计 吴小斐，王归新，陶 鑫，莫显聪 (三峡大学电气信息学院 湖北宜昌 443002) 摘 UCC28019作为控制核心，构成电压外环和电流内环的双环控制。其中内环电流环作用是使网侧交流输入电流跟踪电网电 压的波形与相位；外环电压环为输出直流电压控制环，外环电压调节器的输出控制内环电流调节器的增益，使输出直流电压 稳定。系统采用ATmegal6单片机进行监控，完成输出电压的可调以及输入功率因数、输出电压、输出电流等的实时测量与 显示和输出过流保护等功能。实测表明，系统性能指标完全达到或超过设计要求。 关键词：APFC；直流电源；UCC28019；ATmegal6 中图分类号：TN710 文献标识码：B 文章编号：1004—373X(2010)02—195一03 of PowerFactorPower BasedonActiVePowerFactorCorrection DesignHigh Supply WUXiaofei，WANG Xin，M0 Guixin，TAOXiancong ofElectricalInformation．ChinaThree (Institute GorgesUniversity，Yichang．443002，China) Factor witha AC factoriscon— Abstract：AnActivePower Correction(APFC)basedonDC powersupply veryhigh power takesUCC28019madeTI asthecoreof contr01．Thecontrolstructureof structed．TheDC by system powersupply company the consistsofaninnercurrentandanouter functionoftheinnercurrentisto asinu— system 100p voltageloop．The loop shape soidalAC currentwaveformin withAC outeroneis DC andthe of input phase inputvoltage．The outputvoltageloop output inner tomaintainastable DC 6 MCUis to voltageregulatorregulatesloopgain outputvoltage．ATmegaladoptedimplement and the ustment，real—time of such systemmonitoring，includingoutputv01tageadj samp“ngdisplayingoperationparameters and[)C the overcurrent results as factor，亡)C currentand