Brushless DC (BLDC) motor drives are becoming more popular in industrial, traction applications. This makes the control of BLDC motor in all the four quadrants very vitalThe motor is operated in four steady state operating modes of torque-speed plane. To control a BLDC machine it is generally required to measure the speed and position of rotor by using the sensor because the inverter phases, ac...

An improved position estimation of the sensorless control system with online parameter identification based on back-Electromotive Force (EMF) voltage is presented for dual-winding fault-tolerant permanent magnet motor (FTPMM). In this system, rotor estimated by flux linkage and back-EMF which are generated each phase winding. By introducing phase-locked loop technology to compensate steady-stat...

Received Feb 14, 2017 Revised Apr 14, 2017 Accepted Apr 29, 2017 Brushless DC (BLDC) motors are becoming an increasingly popular motor of choice for its unique characteristics. The BLDC motor drive is assumed to have trapezoidal back-electromotive force (EMF), rectangular phase currents and together produces the desired torque. However, practical back-EMF waveform might not be exactly trapezoid...

Magnesium alloys offer a favored alternative to steels and aluminum alloys due to their low density and relatively high specific strength. Their application potentials are, however, impeded by poor formability at room temperature. In the current work, improved formability for the commercial magnesium AZ80 alloy was attained through the application of the high-rate electro-magnetic forming (EMF)...

The main objective of this research paper is to deliver the selection criteria of PMBLDC Motor for certain industrial applications. In general, Industries uses large Horsepower (HP) Brushless DC Motors as the special drives. These motors offer low starting currents with high starting torque, and the ability to supply reactive KVA to the plant system if desired. For specific industrial applicati...

Bi-tooth flux-switching permanent magnet (FSPM) machine is an interesting brushless machine having magnets and excitation windings in the stator, which exhibits larger back EMF and requires only half the number and volume of PMs compared to conventional FSPM machine. However, air gap magnetic field is difficult to be regulated due to PM excitation alone. In this paper, by introducing an additio...