New circuits for emulating switched reluctance motor windings

Abstract

This study sets forth two new universal circuits capable of emulating the behaviour of non-linear inductance, which are composed of only off-the-shelf circuit devices. One of the proposed inductor emulators is dependent on a controllable resistor whose resistance value is programmable, while the other is carried out by using a multiplier to produce the emulator current. The values of the controllable resistance and the input voltage of the multiplier can be easily computed according to the requirement through digital signal processing techniques by means of digital signal processor chip. The phase inductance of switched reluctance motor (SRM) winding is of high non-linearity due to doubly salient structure and magnetic saturation. Based on the analytical expression of phase inductance, the two proposed universal inductor emulators are applied to mimic the characteristics of SRM windings. The experimental and simulated results of the winding emulators provide the conclusive evidences for validating their practicability. Moreover, the emulators for the whole SRM drive system are designed and the corresponding experimental results further verify the correctness of the proposed SRM winding emulators.

Design and Analysis of an Interior Permanent Magnet Synchronous Motor for a Traction Drive Using Multiobjective Optimization

“…Te fat wire winding is the stator winding using fat copper wires, and made into a hairpin shape, embedded in the rectangular slot of the stator. Compared with traditional winding, the fat wire winding technology has higher slot flling rate and thermal conductivity, which can greatly improve the motor power density [3][4][5]. At the same time, the interior permanent magnet synchronous motor (IPMSM) can meet the requirements of high speed and high efciency, and it is widely used in EVs.…”

A quick demagnetization approach for low torque ripple in three‐phase switched reluctance motor drive system for electric vehicle applications

“…[1][2][3][4][5] In EV propulsion systems, the permanent magnet (PM) machines are advantageous because of its high torque/power density and high efficiency. [6][7][8][9] Hence, many research works on developing rare earth free machines for upcoming electric traction drives. [10][11][12] The general structure of EV drivetrain is shown in Figure 1.…”

“…Nowadays, the electric vehicles (EVs) are popularly attracted towards the industries and researchers in worldwide due to the advantages of zero carbon emissions, green energy, and noiseless transportation 1–5 . In EV propulsion systems, the permanent magnet (PM) machines are advantageous because of its high torque/power density and high efficiency 6–9 . Hence, many research works on developing rare earth free machines for upcoming electric traction drives 10–12 .…”