Coordination Control and Realization of Dual-Rotor Hybrid Electric Vehicle Powertrain
Yang Zhe1, Du Jinhua1, Zhang Boyan1, Guo Mingming2, Liang Deliang1
1. State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University Xi’an 710049 China; 2. Yangzhou Power Supply Company of State Grid Jiangsu Electric Power Co. Ltd Yangzhou 225000 China
Abstract：A dual-rotor hybrid powertrain can be used to replace a conventional planetary gear structure and offers desired performance in improving powertrain operation efficiency, reliability, and compactness. Due to its advantages of high-power density and good heat dissipation, the dual-rotor permanent magnet reluctance (DRPMR) machine has great potential in a dual-rotor hybrid powertrain. However, the complex coupling relationship of the dual-rotor hybrid powertrain poses a challenge for its high-performance control under multiple operating conditions of hybrid electric vehicles. The electromagnetic coupling between the inner and outer machines may increase electromagnetic loss and weaken the output torque. Furthermore, the lower torsional stiffness of the DRPMR machine may result in a shift in the engine's working point. This paper proposes a coordination control strategy for the dual-rotor hybrid powertrain. Firstly, the structural characteristics of the DRPMR machine are analyzed, and mechanical decoupling of the dual-rotor machine is realized through the rotational isolation space. Secondly, based on the energy management system and the model of the DRPMR machine, the power coordination control strategy of the dual-rotor hybrid powertrain is designed. Based on nonlinear model predictive control, the dynamic characteristics of the powertrain are taken into account. To reduce the control complexity, the inequality constraints of the optimization problem are merged into a single constraint related to the engine's power. Finally, the effectiveness of the coordinated control strategy of the dual-rotor hybrid powertrain is demonstrated through system simulation under two specific operating conditions and experimental verification under three different operating modes. The following conclusions can be drawn from the simulation and experimental analysis. A power coordination control strategy is proposed for dual-rotor hybrid powertrains. The structural characteristics of the DRPMR machine and its influence on the control of the dual-rotor hybrid powertrain are analyzed. The power-coordinated control strategy enables the optimal power point operation of the engine and dynamic compensation of the output torque by the dual-rotor machine. Simulation and experimental results show that the dual-rotor hybrid powertrain operates stably, proving the feasibility and effectiveness of the coordinated control strategy.
杨哲, 杜锦华, 张博研, 郭明明, 梁得亮. 双转子混合动力系统的协调控制与实现[J]. 电工技术学报, 2025, 40(22): 7225-7237.
Yang Zhe, Du Jinhua, Zhang Boyan, Guo Mingming, Liang Deliang. Coordination Control and Realization of Dual-Rotor Hybrid Electric Vehicle Powertrain. Transactions of China Electrotechnical Society, 2025, 40(22): 7225-7237.
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