A Proportional Resonant Control Strategy for Efficiency Improvement in Extended Range Electric Vehicles

Xiaoyuan Wang, Haiying Lv, Qiang Sun, Yanqing Mi and Peng Gao
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Xiaoyuan Wang: Institute of Electrical Engineering & Automation, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China
Haiying Lv: Institute of Electrical Engineering & Automation, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China
Qiang Sun: College of Engineering and Technology, Tianjin Agricultural University, Tianjin 300384, China
Yanqing Mi: Institute of Electrical Engineering & Automation, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China
Peng Gao: Institute of Electrical Engineering & Automation, Tianjin University, No. 92 Weijin Road, Tianjin 300072, China

Energies, 2017, vol. 10, issue 2, 1-16

Abstract: The key to control the range extender generation system is to improve the efficiency and reduce the emissions of the electric vehicle (EV). In this paper, based on the purpose of efficiency optimization, both engine and generator are matched to get a public high efficiency region, and a partial power following control strategy was presented. The engine speed is constant in the defined power range, so the output power regulation of the range extender is only realized by the adjustment of the torque of the generator. Engine speed and generator torque were decoupled. An improved proportional resonant (PR) controller is adopted to achieve fast output power regulation. In order to ensure the response characteristics of the control system and to improve the robustness, the impacts on system’s characteristics and stability caused by PR controller and parameters in the inner-current loop were analyzed via frequency response characteristics. A pre-Tustin with deviation compensation is proposed for PR controller’s discretization. A stable and robust power following control method is obtained for the range extender control system. Finally, simulation and experiment of the proposed control strategy illustrated its feasibility and correctness.

Keywords: electric vehicle; range extender; efficiency improvement; pulse width modulation (PWM) voltage source converter; proportional resonant controller; stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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