scholarly journals Research on Harmonic Torque Reduction Strategy for Integrated Electric Drive System in Pure Electric Vehicle

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1241 ◽  
Author(s):  
Jianjun Hu ◽  
Ying Yang ◽  
Meixia Jia ◽  
Yongjie Guan ◽  
Chunyun Fu ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Electric Drive ◽  
Electromechanical Coupling ◽  
Voltage Drop ◽  
Permanent Magnet Synchronous Motor ◽  
Drive System ◽  
Reduction Strategy ◽  
Electric Drive System ◽  
Speed Fluctuation ◽  
The Stability

In order to study the influence of harmonic torque on the performance of the integrated electric drive system (permanent magnet synchronous motor + reducer gear pair) in a pure electric vehicle (PEV), the electromechanical coupling dynamic model of a PEV was established by considering the dead-time effect and voltage drop effect of an inverter and the nonlinear characteristics of the transmission system. Based on the model, the dynamic characteristics of an integrated electric drive system (IEDS) are studied, and the interaction between the mechanical system and electrical system is analyzed. On this basis, a harmonic torque reduction strategy for an IEDS is proposed in this paper. The simulation results show that the proposed strategy can effectively reduce the harmonic torque of the motor and reduce the speed fluctuation and dynamic load of the system components, which can improve the stability of the IEDS and prolong the life of the mechanical components.

scholarly journals Research on Control Strategy of Hydraulic Regenerative Braking of Electrohydraulic Hybrid Electric Vehicles

2021 ◽  
Vol 2021 ◽  
pp. 1-9 ◽  
Author(s):  
Qinghai Zhao ◽  
Hongxin Zhang ◽  
Yafei Xin
Keyword(s):  
Electric Vehicle ◽  
Electric Drive ◽  
Control Strategy ◽  
Hybrid Electric Vehicle ◽  
Operating Conditions ◽  
Drive System ◽  
Regenerative Braking ◽  
Electric Drive System ◽  
Hybrid Electric ◽  
The Impact

The vehicle will generate an amount of current while the electric vehicle just starting to regeneratively brake. In order to avoid the impact of high current on the traction battery, a novel electrohydraulic hybrid electric vehicle has been proposed. The main power source is supplied by the electric drive system, and the hydraulic system performs the auxiliary drive system that fully exerts the advantages of the electric drive system and the hydraulic drive system. A proper regenerative braking control strategy is presented, and the control parameters are determined by the fuzzy optimization algorithm. The simulation analysis built the model through the united simulation of AMESim and MATLAB/Simulink. The results illustrated that the optimized control strategy can reduce battery consumption by 1.22% under NEDC-operating conditions.

scholarly journals Topology and control algorithms for a permanent magnet synchronous motor as a part of a vehicle with in-wheel motors

2021 ◽  
Vol 266 ◽  
pp. 04001
Author(s):  
A.S. Lutonin ◽  
J.E. Shklyarskiy
Keyword(s):  
Permanent Magnet ◽  
Electric Drive ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Drive System ◽  
Maximum Speed ◽  
Stator Windings ◽  
Electric Drive System ◽  
Speed Range

This article describes an electric drive system’s topology with a permanent magnet synchronous motor for a wide speed range applications. Topology consists of a synchronous motor with permanent magnets (PMSM) and two inverters connected to the beginnings and to the ends of the PMSM’s stator windings. The first inverter is connected to a storage battery, while the other one to a floating bridge capacitor, which acts as a back-EMF compensator. The article proposes electric drive system topolo-gy and its control algorithm. Simulation modeling was implemented by the MATLAB/Simulink software package. Simulation results shows that the proposed electric drive system, in comparison with the standard topology with a «star» stator windings connection, is able to increase the maximum speed of PMSM in the field weakening mode by 17%. The maximum achievable torque on the rotor shaft at the maximum speed of the PMSM motor was increased by 16.6%. Also, developed topology allows to in-crease the speed range in the constant torque mode by 34%.

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