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...

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...

This paper presents an efficient and robust control scheme of Fuzzy Logic Electronic Differential Controller (FLEDC) for sensorless drive based electric vehicle. The proposed system consists of two Brushless DC motors (BLDC) that ensure the drive of the two back driving wheels of an electric vehicle. Electronic differential controller (EDC) ensures the maximum torque and it can control both the...

This paper provides a technical review of position and speed sensor less methods for controlling brushless direct current (BLDC) motor drives, including the background analysis using sensors, limitations and advances. The performance and reliability of BLDC motor drivers have been improved because the conventional control and sensing techniques have been improved through sensor less technology....

The back emf harmonics of a permanent magnet (PM) synchronous motor is a major source of torque ripple. For torque control applications including column fitted MDPS (motor driven power steering) systems, it is essential to reduce the mechanical vibrations due to torque ripples at low speeds. In this paper, a torque ripple reduction algorithm for interior PM synchronous motors is proposed. The h...

This paper provides a technical review of position and speed sensorless methods for controlling Brushless Direct Current (BLDC) motor drives, including the background analysis using sensors, limitations and advances. The performance and reliability of BLDC motor drivers have been improved because the conventional control and sensing techniques have been improved through sensorless technology. T...

This article investigates maximum possible torque improvement in a two-pole surface permanent magnet synchronous machine with reduced span, which causes production of highly nonsinusoidal back electromotive force (EMF). It contains high third and fifth harmonics, can be used for the enhancement, using stator current harmonic injection. Optimal span is studied first, it shown that such value, wo...

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...

The primary aim of this study was to develop and validate an accurate sub-domain analytical model estimate the magnetic field electric machines with high-temperature superconducting (HTS) excitation armature windings. developed by utilizing separation variable harmonic analysis methods solve Laplace’s or Poisson’s equations vector potential in two-dimensional polar coordinates. theoretical deri...