升压型临界连续模式功率因数校正技术的研究

Research of Boost Active Power Factor Correction Based on Critical Conduction Mode

该文详细分析了基于电流峰值控制、临界连续模式的升压型有源功率因数校正技术,并以MC33262专用集成芯片为核心设计一种宽电压输入、固定升压输出的AC/DC变换器,功率因数达0.994,总谐波含量低于10%。该技术同样适用于其它各类开关电源,提高功率因数,降低谐波干扰,提高电网的利用效率。

This paper analyzes the technology of boost active power factor correction（BAPFC） based on peak-current control and critical conduction modes,then devises an AC/DC converter with wild-voltage input and fixed boost output using the MC33262 ASIC.The results show that the AC/DC converter works well and the power factor up to 0.994,the total harmonic content less than 10%.This technology can also be wildly used in other types of switching power supply（SPS）,improving the power factor,reducing harmonic interference and improving grid efficiency.