Dual-layer multi-mode energy management optimization strategy for electric vehicle hybrid energy storage systems

IF 1.3 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Jutao Hu, Hongjuan Zhang, Yan Gao, Baoquan Jin
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Abstract

Hybrid energy storage systems (HESSs) play a crucial role in enhancing the performance of electric vehicles (EVs). However, existing energy management optimization strategies (EMOS) have limitations in terms of ensuring an accurate and timely power supply from HESSs to EVs, leading to increased power loss and shortened battery lifespan. To ensure an accurate and timely power supply from HESSs to EVs, this paper proposes a dual-layer multi-mode (DLMM) EMOS. This strategy comprises two layers. The upper layer is a backpropagation neural network (BPNN) model enhanced by the particle swarm optimization (PSO) algorithm. It is used for real-time HESS power demand prediction. In the lower layer, a HESS operational mode determination process is formulated, and an objective optimization function is established based on HESS power loss. Under constraints designed according to the HESS state parameters, the PSO algorithm is utilized to search for the optimal power allocation ratio of the HESS in real time. The proposed DLMM-EMOS strategy is capable of providing optimal power reference values for the batteries and ultracapacitors of the HESS. The DLMM-EMOS is tested on an electrical experimental platform using US06, NEDC, and WLTP driving cycles. Results indicate that the DLMM-EMOS effectively reduces the HESS power loss while enhancing the driving range of the battery.

Abstract Image

电动汽车混合储能系统的双层多模式能量管理优化策略
混合能源存储系统(HESS)在提高电动汽车(EV)性能方面发挥着至关重要的作用。然而,现有的能量管理优化策略(EMOS)在确保从混合能源存储系统向电动汽车准确及时地供电方面存在局限性,导致功率损耗增加和电池寿命缩短。为确保从 HESS 向电动汽车准确及时地供电,本文提出了一种双层多模式(DLMM)EMOS。该策略包括两层。上层是通过粒子群优化(PSO)算法增强的反向传播神经网络(BPNN)模型。它用于实时预测 HESS 电力需求。在下层,制定了 HESS 运行模式确定流程,并根据 HESS 功率损耗建立了目标优化函数。在根据 HESS 状态参数设计的约束条件下,利用 PSO 算法实时搜索 HESS 的最佳功率分配比例。所提出的 DLMM-EMOS 策略能够为 HESS 的电池和超级电容器提供最佳功率参考值。DLMM-EMOS 利用 US06、NEDC 和 WLTP 驾驶循环在电气实验平台上进行了测试。结果表明,DLMM-EMOS 有效降低了 HESS 的功率损耗,同时提高了电池的行驶里程。
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来源期刊
Journal of Power Electronics
Journal of Power Electronics 工程技术-工程:电子与电气
CiteScore
2.30
自引率
21.40%
发文量
195
审稿时长
3.6 months
期刊介绍: The scope of Journal of Power Electronics includes all issues in the field of Power Electronics. Included are techniques for power converters, adjustable speed drives, renewable energy, power quality and utility applications, analysis, modeling and control, power devices and components, power electronics education, and other application.
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