Forthcoming and Online First Articles

International Journal of Electric and Hybrid Vehicles

International Journal of Electric and Hybrid Vehicles (IJEHV)

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International Journal of Electric and Hybrid Vehicles (5 papers in press)

Regular Issues

  • Modal research of permanent magnet synchronous motor for electric vehicles   Order a copy of this article
    by Min Ge, Hongzhi Yan, Wei Shi, Margaret Sharp 
    Abstract: Aiming at the vibration and noise problems caused by the constant rise in speed of the permanent magnet synchronous motor (PMSM) of electric vehicles, the natural frequency of motor stator is first analysed using the lumped mass method. Simultaneously, a fast equivalent modelling approach of motor stator with winding as added mass and material anisotropy is proposed. The finite element model of PMSM is established based on the established equivalent stator model, and its natural frequency and vibration shape are investigated. Finally, the motor's modal test is carried out on the modal test platform. The results show that the difference between the natural frequency simulation and the test results is less than 3%, and that the vibration modal characteristics of each order are consistent. The feasibility and accuracy of the fast equivalent modelling method are verified, laying the groundwork for the following optimised design of PMSM vibration and noise.
    Keywords: permanent magnet synchronous motor; PMSM; modal analysis; finite element; vibration and noise.
    DOI: 10.1504/IJEHV.2024.10063700
     
  • Analysis of weak magnetic characteristics on novel variable main flux type outer rotor permanent magnet synchronous motor for electric vehicle drive   Order a copy of this article
    by Ji Chang Wang, Jian Xin Zheng 
    Abstract: The air gap flux of permanent magnet synchronous motor is constant, so the electric vehicle driven by ordinary permanent magnet synchronous motor has the disadvantages of narrow speed range and low output torque. The novel flux adjustable outer rotor permanent magnet synchronous motor by mechanical method is proposed to overcome the above shortcomings. The structure and magnetic field regulation principle of the outer rotor permanent magnet synchronous motor is introduced and analysed. The changing discipline of magnetic density distribution, flux linkage, back electromotive force, inductance and output torque are obtained based on finite element method. The change of electromagnetic characteristics at different operating speeds shows that the outer rotor permanent magnet synchronous motor has good magnetic weakening characteristics, which can promote output torque at low speed and broaden the operation range at high speed of electric vehicle.
    Keywords: electromagnetic property; outer rotor; mechanical method; permanent magnet synchronous motor; PMSM; variable magnetic field.
    DOI: 10.1504/IJEHV.2024.10064840
     
  • Investigating the effect of Hall effect sensor position error on BLDC motor torque   Order a copy of this article
    by Fatemeh Ghavamirad, Alireza Rezazadeh 
    Abstract: In a brushless DC (BLDC) motor control system, Hall effect sensors usually need to provide rotor position and speed information to control the motor position and speed. Hall effect sensors are prone to errors, errors that may occur due to defects in the electrical circuit of the sensors or improper installation of the sensor. Hall effect sensor position error is one of the most common errors caused by possible manufacturing tolerances during the installation process, even if this error does not immediately lead to system failure, it has a long-term effect on the overall performance of the engine. It can also affect torque ripple. In this article, a method for placing the Hall effect sensors at inappropriate angles in the motor driver is presented, so that the effect of the position error of one Hall effect sensor, two Hall effect sensors, and three Hall effect sensors on the torque of this motor can be investigated. In fact, in this review, all types of Hall sensor position errors are evaluated. The analysis is done through simulation in MATLAB and the results are confirmed by measuring the torque ripple coefficient.
    Keywords: BLDC motor; Hall sensor; torque ripple; speed; simulation.
    DOI: 10.1504/IJEHV.2024.10065052
     
  • ADRC-IMC strategy of PMSM control system based on improved fal function   Order a copy of this article
    by Ningzhi Jin, Yifei Zhang, Yuanfei Lei, Dongyang Sun 
    Abstract: Aiming at the problems of slow response speed, poor anti-interference performance, and dynamic cross-coupling of d-q axis voltage in the traditional permanent magnet synchronous motor (PMSM) control system, this paper designs the current loop with internal model control (IMC) and the speed loop with active disturbance rejection control (ADRC), and proposes an improved ADRC-IMC strategy. The IMC can effectively realise dynamic decoupling and a low-pass filter is introduced to improve the robustness of the system. In ADRC, because the fal function is not smooth at the inflection point, the sudden change of the derivative may deteriorate the dynamic performance of the system. Therefore, it is redesigned to ensure that the improved fal function is continuous and derivable at the inflection point, and it is optimised with requirements of small error, large gain; large error, small gain. Finally, the improved ADRC-IMC system has a faster response speed and stronger anti-interference ability.
    Keywords: active disturbance rejection control; ADRC; fal function; internal model control; IMC; nonlinear control; permanent magnet synchronous motor; vector control.
    DOI: 10.1504/IJEHV.2024.10065157
     
  • The evolving frontiers of sustainability and innovation: analysing Chinas approach to electric vehicle battery recycling   Order a copy of this article
    by Igor Laine 
    Abstract: This paper provides a comprehensive analysis of China's electric vehicle (EV) battery recycling industry, highlighting its role in promoting sustainability and innovation. As the global demand for electric vehicles escalates, effective battery recycling becomes crucial for environmental conservation and resource management. This study delves into China's pioneering efforts in establishing a robust EV battery recycling system. We explore the technological advancements, regulatory policies, and environmental impacts associated with this industry. By examining the challenges, including standardisation and recycling efficiency, the paper underscores the importance of global collaboration in advancing sustainable EV battery recycling practices. China's strategies and achievements offer valuable insights for the international community, emphasising the country’s emerging leadership in sustainable EV battery management. The aim is to provide a detailed understanding of the recycling processes and their global implications, thereby fostering a more sustainable future in electric vehicle technology.
    Keywords: electric vehicles; China; battery recycling process; sustainability; innovation; international business.
    DOI: 10.1504/IJEHV.2024.10065295
     

 

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