并联混合动力汽车ECMS的时变等效因子提取算法的研究

doi:10.19562/j.chinasae.qcgc.2021.02.004

Abstract

Abstract:

For solving the problem that the current equivalent consumption minimization strategy （ECMS） cannot select the optimal equivalent factor according to the actual driving condition， an energy algorithm model for parallel hybrid electric vehicle， i.e. ECMS with dynamic programming （DP）， is constucted by taking the respective advantages of DP and ECMS. With equivalent factor as the control variable of global optimum alroithm， the condition?based optimal time?varying equivalent factor is abtained through the discrete global optimizaion of equivalent factor. A numerical simulation is conducted on all performance parameters of real?time control strategy for time?varying equivalent factor and the DP for globally optimal control strategy in normal condition， verifying the effectiveness of the extraction algorithm for time?varying equivalent factor and the feasibility of the selecting method for the initial value of equivalent factor.

Key words: hybrid electric vehicle, dynamic programing, equivalent consumption minimization strategy, time?varying equivalent factor

Yuejuan Li,Wei Qi,Cheng Wang,Bo Zhang,Qiang Lu. Study on Extraction Algorithm for Time⁃varying Equivalent Factor of ECMS for Parallel Hybrid Electric Vehicle[J].Automotive Engineering, 2021, 43(2): 181-188.

Figures/Tables 12

变量	变量符号	网格区间/步长
控制变量	λ	$[0,5] / 0 . ? 1$
状态变量	SOC	$[0 . ? 4,0 . ? 6] / 0 . ? 000 ? 1$

算法	等效因子	燃油消耗量/ (L·100 km^-1)	$Δ S O C$ /%	$Δ S O C$ 补偿后的燃油消耗量/（L·100 km^-1）	SOC补偿与DP 燃油消耗量差值比/%
DP		21.06	0	21.06	0
ECMSwDP	$λ t$	21.80	0.01	21.78	3.42
ECMS+P(SOC)	$λ 0 = λ a v e = 2 . ? 203$	22.07	0.78	21.82	3.61
ECMS	$λ 0 = λ a v e = 2 . ? 203$	21.27	-1.81	22.27	5.75

算法	等效因子	燃油消耗量/ (L·100 km^-1)	$Δ S O C$ /%	$Δ S O C$ 补偿后的燃油消耗量/（L·100 km^-1）	SOC补偿与DP 燃油消耗量差值比/%
DP		19.97	0	19.97	0
ECMSwDP	$λ t$	21.17	0.09	21.16	5.96
ECMS+P(SOC)	$λ 0 = λ a v e = 2 . ? 115$	22.09	0.17	22.07	10.51
ECMS	$λ 0 = λ a v e = 2 . ? 115$	19.78	-9.67	22.97	15.02

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系统	参数
发动机	型号：Deutz?BF4M1013FC 额定功率：140 kW @ 2 300 r/min 额定转矩：640 N?m @1 600 r/min
电机(M/G)	峰值功率：80 kW 恒定功率：40 kW 峰值转矩：±380 N?m 恒定转矩：±260 N?m 最高转速：5 000 r/min
储能系统	电池类型：镍氢电池(NiMH) 电池容量：27 A?h 峰值输出功率：75 kW
传动系统	1至6挡传动比：7.285、4.193、2.485、1.563、1.000、0.847 ；主减速比：6.333
整车	型号：FAW?CA6110HEV 尺寸：11 496 mm × 2 500 mm × 3 075 mm 总质量：15 000 kg 迎风面积：6.5 m² 空气阻力系数：0.65 滚动阻力系数：0.009 8 轮胎半径：509 mm

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Study on Extraction Algorithm for Time⁃varying Equivalent Factor of ECMS for Parallel Hybrid Electric Vehicle

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