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Research on EV HFAC Resonant Inverter Power Supply Based on LQR Optimization Control
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Hao Zhou1, 3, Jingyao Zeng2, Jun Wu1
Automotive Engineer | 2025, (7) : 10 - 17
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Automotive Engineer | 2025, (7): 10-17
• Special Topic on Key Technologies of Power Devices and Power Electronics Systems for New Energy Vehicles •
Research on EV HFAC Resonant Inverter Power Supply Based on LQR Optimization Control
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Hao Zhou1, 3, Jingyao Zeng2, Jun Wu1
Affiliations
  • 1 Zhuzhou CRRC Times Electric Co., Ltd., Zhuzhou 412001
  • 2 School of Electric Power, South China University of Technology, Guangzhou 510640
  • 3 Shien-ming Wu School of Intelligent Engineering, South China University of Technology, Guangzhou 511442
Published: 2025-07-15 doi: 10.20104/j.cnki.1674-6546.20250015
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In order to address the issues of complex control strategy design and hardware circuit implementation of High Frequency AC (HFAC) resonant inverter power supply in Electric Vehicle (EV), this paper proposes a composite control strategy based on the combination of an integral controller and state feedback. Taking the typical LCLC DC-HFAC inverter as the research object, the Linear Quadratic Regulator (LQR) optimization control theory is used to realize the offline digital calculation of the feedback control parameters in the composite control strategy, which improves the dynamic performance of the DC/HFAC inverter and enhances the stability of the DC-HFAC inverter power supply. The control strategy and hardware circuit design are optimized by simplifying the parameter design process of the controller and the Phase-Shift Modulation (PSM) method. The experimental results show that the proposed LCLC DC-HFAC inverter power supply based on LQR optimized feedback composite control strategy not only has good steady-state performance, but also has high conversion efficiency and superior dynamic response speed.

Electric vehicle  /  DC/HFAC inverter  /  Composite control strategy  /  Linear Quadratic Regulator (LQR)  /  Optimization control theory
Hao Zhou, Jingyao Zeng, Jun Wu. Research on EV HFAC Resonant Inverter Power Supply Based on LQR Optimization Control[J]. Automotive Engineer, 2025 , (7) : 10 -17 . DOI: 10.20104/j.cnki.1674-6546.20250015
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Year 2025 volume Issue 7
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doi: 10.20104/j.cnki.1674-6546.20250015
  • Online Date：2025-11-10
  • Published：2025-07-15
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  • Revised：2025-02-20
Affiliations
    1 Zhuzhou CRRC Times Electric Co., Ltd., Zhuzhou 412001
    2 School of Electric Power, South China University of Technology, Guangzhou 510640
    3 Shien-ming Wu School of Intelligent Engineering, South China University of Technology, Guangzhou 511442
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