The method for preliminary powertrain design is presented in the paper. Performance of EV realized by motor torque–speed curve and gear ratio optimization. typical two-zone mechanical characteristic a PMSM traction included optimization program. longitudinal vehicle model considered Some examples try to show calculation possibilities application existing vehicles: Tesla Model S Mini Cooper SE.

Optimizing the operating speed curve of trains without adding new energy storage facilities is essential in energy-saving operation railways. In this paper, we propose an optimal train planning method for driving more efficiently. A refined traction evaluation model induction motor propulsion systems first presented. The proposed considers efficiency at different points and inverter gearbox. Th...

This paper proposes a novel hybrid-type permanent magnet motor (HPMM) that simultaneously applies ferrite-PM (Fe-PM) to reduce the amount of NdFeB (Nd-PM) used in electric vehicle traction motors. Conventional HPMM can be divided into parallel type (P-HPMM) and series (S-HPMM). P-HPMM is advantageous for PM torque improvement because it obtain high flux linkage, but there problem Fe-PM demagnet...

An annoying tonal noise is produced by modern electrical trains during acceleration and deceleration. This noise is caused by electromagnetic forces generating structural vibrations, especially from the traction motors. The electromagnetic noise is dominant at low train speeds and affects both the passengers on the train and on platforms, as well as people living near the track. The focus on th...

Aiming at the problem that complex working conditions affect effect of manual feature extraction in bearing fault diagnosis metro traction motor, a method motor based on improved stacked denoising autoencoder (SDAE) is proposed. This extracts features directly from original vibration signal through deep learning, reduces dependence processing technology and experience, solves unsatisfactory ext...

In this paper, an improved immune algorithm (IIA) was proposed for the torque ripple reduction optimal design of interior permanent magnet synchronous motor (IPMSM) a fuel cell electric vehicle (FCEV) traction motor. When designing machines, both global and local solutions designs are required as result should be compared in various aspects, including torque, ripple, cogging torque. To lessen c...

The most distinct advantage of electric vehicle is its quick and precise torque generation. However, most electric vehicles developed until now have not yet utilized it. In this paper, two novel traction control techniques of electric vehicle using this advantage are proposed. One is the model following control and another is the optimal slip ratio control. The basic effectiveness of the propos...