Energy management strategy of a novel mechanical–electro–hydraulic power coupling electric vehicle under smooth switching conditions

Li, Lin; Zhang, Tiezhu; Hong, Jichao; Yang, Jian; Zhang, Zhen; Wu, Kaiwei

doi:10.1016/j.egyr.2022.06.018

Cited by 11 publications

(5 citation statements)

References 24 publications

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“…Applications of fuzzy logic here may include energy savings, movement and performing operational tasks. Li et al [31] proposed an open-loop fuzzy controller for the mechanicalelectro-hydraulic power coupling system of electric vehicles (Figure 7). Application of a rule-based fuzzy logic energy management strategy allowed the battery power consumption to be reduced by 14.7%.…”

Section: Hydraulic Flow Control Valves and Servo Valvesmentioning

confidence: 99%

“…Application of a rule-based fuzzy logic energy management strategy allowed the battery power consumption to be reduced by 14.7%. Fuzzy control principle of an electric vehicle power coupling system [31]; acc-accelerator signal, v-velocity, T d -total demanded torque, K-motor torque to the demanded torque ratio.…”

Section: Hydraulic Flow Control Valves and Servo Valvesmentioning

confidence: 99%

“…Figure 7. Fuzzy control principle of an electric vehicle power coupling system[31]; acc-accelerator signal, v-velocity, T d -total demanded torque, K-motor torque to the demanded torque ratio.…”

mentioning

confidence: 99%

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A Review of Fuzzy Logic Method Development in Hydraulic and Pneumatic Systems

Filo

2023

Energies

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Fuzzy logic has been developed since the 1960s. Research related to fuzzy logic application in hydraulics and pneumatics is mainly aimed at energy demand reduction and improvement in operational characteristics. This article summarizes the recent achievements in hydraulic and pneumatic fuzzy logic system design. First, the main application areas have been identified, including control and fault diagnosis. The control systems were additionally grouped according to the main objects of study, such as pumps, actuators, proportional valves, etc. Then, the results of the recent research were presented, and the main features of the designed fuzzy logic units were summarized for each group. Particular attention was paid to types of membership functions used for fuzzification and defuzzification, numbers of fuzzy sets defined for input and output signals, types of fuzzy operators, the applied inference algorithm and the defuzzification method. Based on the analysis of the listed parameters, conclusions were formulated regarding advantages, main issues and difficulties, as well as recommended directions for further development.

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Section: Hydraulic Flow Control Valves and Servo Valvesmentioning

confidence: 99%

Section: Hydraulic Flow Control Valves and Servo Valvesmentioning

confidence: 99%

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A Review of Fuzzy Logic Method Development in Hydraulic and Pneumatic Systems

Filo

2023

Energies

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“…The created fuzzy controller with vehicle speed and pressure of the accumulator as variables was used to optimize the logic threshold control strategy, obtaining a reduction in a battery consumption rate by 14-21%. Similarly, Li [74] proposed a similar mechanical-electro-hydraulic power coupling system for electric vehicles to increase the transient power limit and reduce the impact of operating condition changes on the battery. The verification results showed a reduction in battery power consumption by 14.7%, and the obtained energy recovery rate 94.3%.…”

Section: Fuzzy Logic Controllersmentioning

confidence: 99%

Artificial Intelligence Methods in Hydraulic System Design

Filo

2023

Energies

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Reducing energy consumption and increasing operational efficiency are currently among the leading research topics in the design of hydraulic systems. In recent years, hydraulic system modeling and design techniques have rapidly expanded, especially using artificial intelligence methods. Due to the variety of algorithms, methods, and tools of artificial intelligence, it is possible to consider the prospects and directions of their further development. The analysis of the most recent publications allowed three leading technologies to be indicated, including artificial neural networks, evolutionary algorithms, and fuzzy logic. This article summarizes their current applications in the research, main advantages, and limitations, as well as expected directions for further development.

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“…16 Therefore, our research group has undertaken numerous efforts in the field of MEHC, including enhancing energy management strategies, optimizing structural parameters, and reducing noise and vibration. Li et al 17 proposed a novel electromechanical-hydraulic power coupling system for electric vehicles, established a rule-based dynamic energy management strategy, and confirmed the feasibility and superiority of the new model. Additionally, they eliminated speed instability during the electromechanical-hydraulic power transition process by adjusting the inclination angle of secondary components.…”

Section: Introductionmentioning

confidence: 95%

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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Energy management strategy of a novel mechanical–electro–hydraulic power coupling electric vehicle under smooth switching conditions

Cited by 11 publications

References 24 publications

A Review of Fuzzy Logic Method Development in Hydraulic and Pneumatic Systems

A Review of Fuzzy Logic Method Development in Hydraulic and Pneumatic Systems

Artificial Intelligence Methods in Hydraulic System Design

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

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