广东电力2025，Vol.38Issue(3)：78-90,13.DOI:10.3969/j.issn.1007-290X.2025.03.009
复杂电网下图腾柱无桥PFC的锁相控制策略
Phase-locked Control Strategy of Bridge-less PFC with Totem Pole in Complex Power Grid
摘要
Abstract
The totem-pole bridgeless power factor correction(TBPFC)based on second-order generalized integrator-phase-locked loop(SOGI-PLL)can effectively filter the harmonic of power grid voltage.However,the harmonic suppression ability is restricted for complex power grids containing harmonic and DC components,and the phase locking accuracy requires improvement.Therefore,this paper proposes four enhanced SOGI-PLL control strategies including embedded SOGI-PLL,cascade SOGI-PLL,parallel SOGI-PLL,and enhanced parallel SOGI-PLL phase-locked design approaches.By depicting the improved structures of the four strategies and comparing the four enhanced phase-locking methods with SOGI-PLL,the suppression capabilities of harmonic and DC components of different phase-locking strategies are analyzed.In light of the insufficient harmonic suppression ability of the proportional integral controller in the totem pole bridgeless power factor correction(TBPFC)converter current loop,a proportional integral resonant controller that can enhance the harmonic suppression ability of the power grid is adopted,and the controller is combined with the four improved phase-locked loops to reestablish the current inner loop control structure to achieve harmonic suppression,optimize the quality of inductor current waveform,and reduce total harmonic distortion(THD).The simulation results indicate that compared with SOGI-PLL,the four improved strategies exhibit superior performance in suppressing harmonics,and the proportion of THD is lower than that of SOGI-PLL.关键词
图腾柱无桥PFC/电网谐波/直流分量/锁相环/比例积分谐振控制器/二阶广义积分器-锁相环Key words
totem pole bridgeless PFC/power network harmonic/DC component/phase-locked loop/proportional integral resonant controller/second order generalized integrator-phase-locked loop分类
动力与电气工程引用本文复制引用
周其锋,石荣亮,刘维莎..复杂电网下图腾柱无桥PFC的锁相控制策略[J].广东电力,2025,38(3):78-90,13.基金项目
广西自然科学基金面上项目(2021GXNSFAA220038) （2021GXNSFAA220038）
广西研究生教育创新计划项目(YCSW2024372) （YCSW2024372）
