Control Strategy for Electric Vehicle Range-Extender Based on Hybrid Excitation Generator

doi:10.16183/j.cnki.jsjtu.2019.203

Abstract

Abstract:

Based on a hybrid excitation generator, a novel electric vehicle range-extender was proposed and the control system structure and the working principle were described. The multi-speed point working area was determined, according to the overall efficiency characteristics of the hybrid excitation range-extender. Based on the flexible adjustable characteristics of the air-gap magnetic field of the hybrid excitation generator, a double-closed-loop generation control algorithm was designed by decoupling the speed-power around the working area of the range-extender. The control strategy model was built by using MATLAB/Simulink and verified based on the prototype of the self-developed hybrid excitation range-extender. The test results show that the hybrid excitation range-extender has fast-dynamic response of output power and small steady-state error of speed and power control. Further, the steady-state and transient operating conditions are both located in the set working area. Therefore the power generation control strategy is feasible.

Key words: electric vehicle, range-extender, hybrid excitation generator, control strategy, decoupling control

CLC Number:

U469.72

HOU Jue, YAO Dongwei, WU Feng, LÜ Chenglei, WANG Han, SHEN Junhao. Control Strategy for Electric Vehicle Range-Extender Based on Hybrid Excitation Generator[J]. Journal of Shanghai Jiao Tong University, 2021, 55(2): 206-212.

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发动机	参数
燃料	汽油
结构	V型双缸电喷风冷
排量/L	0.747
缸径×冲程/(cm×cm)	83×69
压缩比	9.1
额定功率/kW	18.0
额定功率对应转速/(r·min^－1)	3 600
最大转矩/(N·m)	54.2
最大转矩对应转速/(r·min^－1)	2 000～3 000
最低燃油消耗率/[g·(kW·h)^－1]	267
外型尺寸/(mm×mm×mm)	369×533×500
发动机总成净质量/kg	50

混合励磁电机	参数
额定发电功率/kW	16
额定发电功率对应转速/(r·min^－1)	3 600
发电转速范围/(r·min^－1)	1 800～3 600
最佳发电转速/(r·min^－1)	2 000～3 000
额定输出电压/V	330
输出电压范围/V	280～380
最大输出电流/A	60
励磁方式	混合励磁
励磁电流/A	±10
励磁电压/V	24
最大发电效率/%	94

功率子区间/kW	转速/(r·min^－1)
[4, 5.5)	1 800
[5.5, 6.5)	2 000
[6.5, 8)	2 200
[8, 9)	2 400
[9, 10)	2 600
[10, 11)	2 700
[11, 12)	2 800
[12, 13)	3 000
[13, 14)	3 200
[14, 15)	3 400
[15，16]	3 600