基于LQR优化控制的电动汽车高频交流谐振逆变电源研究

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中图分类号：TM464 文献标志码：A DOI： 10.20104/j.cnki.1674-6546.20250015

Research on EV HFAC Resonant Inverter Power Supply Based on LQR Optimization Control

ZhouHao³，ZengJingyao²，Wu Jun1 （1.Zhuzhou CRRC Times Electric Co.，Ltd.，Zhuzhou41200l; 2.Schoolof Electric Power，South China Universityof Technology，Guangzhou510640; 3.Shien-ming Wu ScholofIntellgentEngineering，South China Universityof Technology， Guangzhou 511442）

【Abstract]Inorder to addressthe issues ofcomplex control strategy design and hardware circuit implementationof High Frequency AC （HFAC）resonant inverter powersupplyin Electric Vehicle（EV），thispaper proposesacompositecontrol strategybasedonthecombinationofanintegralcontrollerandstatefeedback.TakingthetypicalLCLCDC-HFAC inverteras theresearchobject，theLinearQuadraticRegulator（LQR）optimizationcontroltheoryisusedtorealizetheoflinedigital calculationof thefeedback controlparameters inthecompositecontrol strategy，which improves thedynamicperformanceof the DC/HFAC inverterand enhances the stabilityof the DC-HFAC inverterpowersupply.Thecontrol strategyand hardware circuit designareoptimized bysimplifying theparameterdesign processof thecontrolerandthePhase-Shift Modulation （PSM） method.The experimental results show that the proposed LCLC DC-HFAC inverter power supply based on LQR optimized fedback compositecontrol strategynotonly hasgood steady-state performance，butalsohashigh conversion efficiency and superior dynamic response speed.

Keywords：Electric vehicle，DC/HFAC inverter，Composite control strategy，LinearQuadratic Regulator （LQR）， Optimization control theory

【引用格式】周浩，曾婧瑶，吴军.基于LQR优化控制的电动汽车高频交流谐振逆变电源研究[J].汽车工程师，2025（7）： 10-17.ZHOU H，ZENG JY， WU J. Research on EV HFAC Resonant Inverter Power Supply Based on LQR OptimizationControl[J]. AutomotiveEngineer，2025（7）：10-17.

1前言

高频谐振逆变器具有高功率密度、低电磁干扰（ElectromagneticInterference，EMI）及高转换效率等优点-10]，在过去几十年中，其衍生的高频交流配电系统（High-Frequency Alternating Current PowerDistributionSystem，HFACPDS）方案广泛应用于电信、微电网[2-3]和电动汽车[4-6]。（剩余10748字）