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All-electric intelligent anti-lock braking system (ABS) is a new technology to be developed and applied in the Electric Vehicles(EVs). It could completely replace the traditional mechanical brake as well as hybrid ABS system which is not suitable for electric vehicles. Thus it greatly improves the reaction speed, shorten the braking time, and is more easily to be integrated in the electric vehicle...
Due to higher specific power density, longer life time and safer operation, super-capacitors (ultra-capacitors or electric double layer capacitors) are being considered in applications of electric vehicles (EVs). This study deals with design of light electric vehicles or even rail vehicle powered by full or partial pure super-capacitors (SCs). The simulation model of the electric vehicles powered...
Axial field flux-switching permanent magnet machine (AFFSPMM) is a novel permanent magnet (PM) machine which incorporates the merits of flux-switching PM (FSPM) machine and axial field PM machine. AFFSPMM exhibits many advantages, such as sinusoidal back-EMF waveform, good flux weakening capability, favorable for cooling, high torque/power density and high efficiency [1]. However, compared to the...
In recent decades, permanent magnet synchronous motor (PMSM) drives have become more widely used for electric vehicles (EVs) due to simple structure, high efficiency and high power density. But the drawback with constant PM flux linkage also brings limitations in the drive application. Two ways can be used to solve the above-mentioned problem, one is that the armature current is utilized to weaken...
This paper presents a Space-Vector Modulated (SVM) Direct-Torque-Control (DTC) scheme for a direct-drive permanent magnet synchronous generator (PMSG) and a gird converter for wind energy without any position sensor. Direct control of the rotating velocity and amplitude of the stator flux vector allows very fast torque response of the PMSG according to the generator speed. Fixed switching frequency...
To achieve ultrahigh precision dielectrophoretic (DEP) manipulation of carbon nanotubes (CNTs), a novel technique is investigated both theoretically and experimentally by shaping the local geometries of nanoelectrodes to control the electrohydrodynamic behavior of CNTs. Motion trajectories and positions of CNTs assembled on electrodes are predicted based on calculated DEP forces and torques. Both...
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