基于电感量实时辨识的单相PFC自适应控制及Simulink仿真验证OA
Single-phase PFC Adaptive Control Based on Real-time Inductance Identification and Simulink Simulation Verification
针对功率因数校正(Power Factor Correction,PFC)电路中电感量随直流偏置非线性变化导致的系统增益失配问题,提出一种基于高频纹波斜率法的电感量实时检测算法.首先,建立单相全桥 PFC电压-电流双环控制模型,推导电感量变化对电流环路传递函数的影响规律,通过电流环路波特图及仿真结果,表明在电感参数发生较大变化时会影响系统稳定性.其次,通过监测PFC电感的高频纹波电流斜率,在线计算瞬时电感值,并以 1 kHz频率动态调整电流环PI参数实现环路增益恒定.基于 Simulink的对比仿真表明,在此算法下,电感量波动比较大时,系统仍能保持稳定.该算法可为高可靠性 PFC电路设计提供理论参考.
To solve the problem of systematic gain mismatch in power factor correction(PFC)circuit caused by nonlinear change of inductance with DC bias,a real-time inductance detection algorithm based on high frequency ripple slope method is proposed.First,a single-phase full-bridge PFC voltage-current double loop control model is established,and the influence of inductance variation on the current loop transfer function is deduced.The current loop bode diagram and simulation results show that the system stability will be affected when the inductance parameters change greatly.Secondly,by monitoring the slope of high frequency ripple current of PFC inductors,the instantaneous inductance value is calculated online,and the PI parameter of current loop is dynamically adjusted at 1 kHz frequency to achieve constant loop gain.The comparison simulation based on Simulink shows that the system can maintain stability un-der large inductance fluctuation under this algorithm.This algorithm can provide a theoretical reference for the design of high reliability PFC circuits.
刘培哲;彭程;张平
艾德克斯电子(南京)有限公司,江苏省南京市雨花台区西善桥南路 108 号 210000河北水利电力学院 电力工程系,河北省沧州市运河区黄河西路 49 号 061001艾德克斯电子(南京)有限公司,江苏省南京市雨花台区西善桥南路 108 号 210000
信息技术与安全科学
自适应控制参数电感量实时检测单相PFCSimulink仿真
adaptive control parametersreal-time inductance detectionsingle-phase PFCSimulink simulation
《河北水利电力学院学报》 2026 (1)
19-23,5
河北省教育厅科学研究资助项目(QN2022175)
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