Double deep Q-network guided energy management strategy of a novel electric-hydraulic hybrid electric vehicle

Zhang, Zhen; Zhang, Tiezhu; Hong, Jichao; Yang, Jian; Jia, Qingxiao

doi:10.1016/j.energy.2023.126858

Cited by 21 publications

(7 citation statements)

References 27 publications

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“…12 This technology, when applied in new energy vehicles, addresses issues such as the short driving range of pure electric vehicles, low energy recovery efficiency, and frequent charge-discharge cycles that accelerate battery aging while meeting the power requirements of vehicles. 13 Therefore, our team has introduced an innovative Permanent Magnet Synchronous Mechatronic-Electro-Hydraulic Coupler (MEHC). This system integrates electrical and hydraulic forces to facilitate energy conversion among diverse power sources, speed regulation, and seamless power transmission.…”

Section: Introductionmentioning

confidence: 99%

“…The simulation consequences show that the motor torque and hydraulic torque are reduced, and thus, the vehicle's acceleration performance and energy recovery efficiency are improved. Zhang et al 23 researched a novel electric-hydraulic hybrid electric vehicle (EHHEV) that features various operating modes and multiple energy sources. They established a rule-based control strategy and verified the superiority of EHHEV in energy management through steady-state simulations.…”

Section: Introductionmentioning

confidence: 99%

“…This lays a solid foundation for the future widespread application and development of these vehicles, which are brimming with prospects and potential. 24 However, whether in motor or vehicle research, external characteristics studies directly impact vehicle performance, efficiency, safety, and range capabilities.…”

Section: Introductionmentioning

confidence: 99%

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Investigation on the external characteristics of permanent magnet synchronous mechatronic-electro-hydraulic coupler

Zhang,

Liu

et al. 2024

Advances in Mechanical Engineering

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The efficient utilization of energy stands as a paramount priority on the international stage. Currently, there are various issues associated with the multi-power source couplers in automobiles. Addressing concerns related to the large size, poor reliability, low durability, and inefficient energy conversion of these couplers, a novel Permanent Magnet Synchronous Mechatronic-Electro-Hydraulic Coupler (MEHC) has been proposed. This system integrates a traditional permanent magnet synchronous machine with a swash plate axial piston pump/motor, enabling the mutual conversion of electrical, mechanical, and hydraulic energy. This paper primarily investigates the losses and efficiency of MEHC in both pure electric motor mode and electro-hydraulic coupling mode. Compared to our group’s previous Induction Asynchronous Mechatronic-Electro-Hydraulic Coupler (IA-MEHC), MEHC demonstrates lower losses and higher torque. Additionally, the paper also computes the electrical power external characteristics and comprehensive power external characteristics of the MEHC in pure electric motor mode. In the calculations within this paper, electric power is the primary power source, and in the electro-hydraulic coupling mode, hydraulics only provide auxiliary assistance. The research outlined in this paper lays a robust groundwork for future advancements and innovations in MEHC technology. With the capacity to bolster its performance, efficiency, and reliability, this groundwork holds the promise of accelerating the rapid development and widespread adoption of MEHC in automotive applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation on the external characteristics of permanent magnet synchronous mechatronic-electro-hydraulic coupler

Zhang,

Liu

et al. 2024

Advances in Mechanical Engineering

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“…Energy management strategy (EMS) directly affects the power and economy of the vehicle by controlling the energy distribution among various energy sources. [21,22] A well-designed and effective EMS determines the performance of HEVs. [23,24] Deservedly, EHHVs require a well-designed EMS to control power distribution between electric and hydraulic power.…”

Section: Introduction 1literature Reviewmentioning

confidence: 99%

Energy Management Strategy Optimization for a Novel Electric‐hydraulic Power Coupling Vehicle Considering the Influence of Multiple Driving Cycles

2023

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Hydraulic hybrid technology can further improve the economy of electric vehicles (EV). This paper investigates a novel electro‐hydraulic power coupling vehicle (EHPCV), which is endowed with multiple drive modes and energy regenerative braking modes. The electric‐hydraulic power coupler (EHPC) is an innovative device for realizing power coupling and conversion in the powertrain. The design and optimization of energy management strategies (EMS) are key to ensuring the efficient and stable operation of hybrid electric vehicles (HEV). Based on the analysis of energy flow, a rule‐based energy management strategy (RB‐EMS) is built. To achieve more reasonable energy management of the EHPCV in random working environments, the article proposes an optimization framework for the EMS based on multiple driving cycles. More precisely, a multi‐objective optimization mathematical model is established with the goal of maximizing the battery state of charge (SOC) and minimizing speed error. Moreover, use the optimal Latin hypercube design (OLHD) to select the design variables that have a significant impact on the optimization objective. Definitively, the NSGA‐II algorithm combines with the RB‐EMS to optimize the control parameters. The verification results show that the optimized EMS enables the EHPCV to have greater economic advantages. The research achievements of this paper provide theoretical support and important reference for the energy management optimization of electric‐hydraulic hybrid vehicles (EHHV) in the future.This article is protected by copyright. All rights reserved.

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“…The most critical part is the choice of electrodes and catalysts. Nanomaterials, carbon nanofibre and metal-oxide membranes have been used as electrodes in the treatment of wastewater, considering the absorbability and electric potential difference [9][10][11]. Electrocatalysis can also be combined with other techniques easily, such as ionization or photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

Applications of electro-catalysis municipal wastewater treatment

2023

ACE

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In the context of developing a more livable environment, people are paying more attention to the pollution problem. As the consumption of water resources increases, water pollution is one of the most serious problems people need to pay attention to the most. However, traditional methods cannot meet the requirements of treating wastewater while recovering resources. In this review, the application of electrocatalytic technology in municipal wastewater treatment is discussed. Specifically, the comparison between electrocatalysis and traditional methods is shown in this review. Various literatures on different types of materials of electrodes are included. Besides, two different types of electrodes and mechanisms of electrocatalysis and their application in multiple types of wastewater are also summarized. This review aims to arouse peoples attention to the wastewater problem and explore the further application of electrocatalytic technology in the future in order to rationally design new electrocatalytic systems for the recovery of energy and resources.

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Double deep Q-network guided energy management strategy of a novel electric-hydraulic hybrid electric vehicle

Cited by 21 publications

References 27 publications

Investigation on the external characteristics of permanent magnet synchronous mechatronic-electro-hydraulic coupler

Investigation on the external characteristics of permanent magnet synchronous mechatronic-electro-hydraulic coupler

Energy Management Strategy Optimization for a Novel Electric‐hydraulic Power Coupling Vehicle Considering the Influence of Multiple Driving Cycles

Applications of electro-catalysis municipal wastewater treatment

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