基于交通信息的复合电源系统控制策略优化

doi:10.19562/j.chinasae.qcgc.2021.05.005

Abstract

Abstract:

With consideration of the influence of future driving speed and road slope on vehicle power demand， an optimization on the existing energy management strategy of hybrid power source is conducted in this paper based on traffic information fusion. Firstly， the hybrid power simulation model is constructed with MATLAB/Simulink， and based on the traffic congestion situation and driving speed type， a judgment method for the short?term speed changing trend in future is proposed. Then， according to the road slope and speed changing trend， a fuzzy controller， which can automatically correct the output power of ultra?capacitor based on traffic information， is designed. Finally， on the premise of acquiring traffic information and by using the fuzzy controller， an optimization on the energy management strategy based on adaptive wavelet transform?fuzzy control is performed. The results show that the control strategy optimized based on traffic information can further give play to the superiorities of hybrid power source， with its energy consumption reducing by about 2.3% and the battery cycle life extending by about 2.96%.

Key words: hybrid power source, energy management strategy, traffic information, speed changing trend

Jie Hu,Ming Wang,Di Liu,Fuwu Yan,Kai Cao. Optimization of Control Strategy for Hybrid Power System Based on Traffic Information[J].Automotive Engineering, 2021, 43(5): 675-682.

Figures/Tables 20

聚类中心	$A 1$	$A 2$	$A 3$
平均加速度	-0.745 821	0.005 093	0.611 463
速度标准差	9.164 613 0	1.429 893	7.477 695
片段始末速度差	-24.164 611	0.164 999	19.811 400

输入/输出变量	论域	模糊子集	模糊子集含义
需求功率 $P d e m$	[0,1]	{PS，PM，PB}	正小，正中，正大
车速趋势 $v t r e$		{NB，NM，NS，ZE， PS，PM，PB}	负大，负中，负小，零，正小，正中，正大
道路坡度 $G r o a d$		{NB，NM，NS，ZE， PS，PM，PB}	负大，负中，负小，零，正小，正中，正大
修正系数 $C s c_c o r r$	[-0.2,0.2]	{NB，NM，NS，ZE， PS，PM，PB}	负大，负中，负小，零，正小，正中，正大

If $P d e m$ is PS and $v t r e$ is NB and $G r o a d$ is PS, then $C s c_c o r r$ is NM
If $P d e m$ is PS and $v t r e$ is PS and $G r o a d$ is PM, then $C s c_c o r r$ is PS
If $P d e m$ is PM and $v t r e$ is PS and $G r o a d$ is PM, then $C s c_c o r r$ is PM
…
If $P d e m$ is PB and $v t r e$ is NB and $G r o a d ?$ is NB, then $C s c_c o r r$ is NM
If $P d e m$ is PB and $v t r e$ is PB and $G r o a d$ is PS, then $C s c_c o r r$ is PB

References 19

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Optimization of Control Strategy for Hybrid Power System Based on Traffic Information

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