This paper presents a novel method to control sinusoidal distributed winding or back electromotive force (back-EMF) multi-phase permanent magnet (PM) machines under open-circuit fault conditions. In this study, five different conditions are considered: single-phase, adjacent double-phase, non-adjacent three-phase, and three-phase open circuit New current sets for the remaining healthy phase obt...

This paper proposes a sensorless control strategy based on Sliding Mode Observer (SMO) for Five-phase Interior Permanent Magnet Synchronous Machine (FIPMSM), with consideration of the third harmonic component. Compared to conventional three-phase machines, back electromotive force (back-EMF) contains more information. Thus, in this paper, first and components five-phase machine are considered e...

In this study, a magnetic field is analyzed using an analytical method and compared with the electromagnetic characteristics of 8-pole 9-slot 12-slot permanent magnet synchronous machines considering rotor eccentricity. The flux density back electromotive force (EMF) are derived perturbation theory theory. First, Fourier modeling performed through magnetization modeling, two analysis regions se...

Static eccentricity (SE) is frequently generated by manufacturing processes. As the nonuniformity of air-gap length caused SE, torque ripple and cogging increase in motor. This study analyzes distorted back electromotive force (EMF) due to SE. Further, a motor design considering SE performed for stable EMF low torque. First, was diagnosed analyzed using measured from test results base model. In...

A major part of the power consumption in the low-wattage reciprocating compressors, used for household refrigeration units, is associated with the motor. A variable speed compressor as opposed to a single speed compressor is known to provide energy savings due to its ability to match the load demand from the pump more closely to the power delivered by the pump. The current article presents an o...

Because of a reported excess of cancers among children living near power lines, there is some concern that electric and magnetic fields (EMFs) induced by electric power sources may affect human health, and this possibility has provoked considerable controversy. The scientific question of whether there are such health effects is far from resolved. Building upon a set of detailed reviews of the a...

In this paper the method of sensorless startup of direct current brushless motor using third harmonic back Electromotive Force (EMF) and motor startup using microcontroller for pulse width modulation, power switch control and motor output analysis is presented which renders RPM control and high speed achievement for motor. The microcontroller is used for processor and MOSFETs are used for power...

A novel primary consequent-pole tubular transverse-flux flux-reversal linear machine (TTFFRLM) is proposed in this paper. The permanent magnets (PMs) of the machine are located on the inner surface of the short teeth of the primary iron cores for reducing the amount of PM in long stroke drive systems, and the primary is easily manufactured. The structure and principle of this machine are analyz...