Brushless DC motors (BLDC) are widely used in industrial areas. The BLDC motors are driven either by indirect ACAC converters or by direct AC-AC converters. Direct AC-AC converters i.e. matrix converters are used in this paper to drive the three phase BLDC motor and it eliminates the bulky DC link energy storage element. A matrix converter converts the AC power supply to an AC voltage of variab...

A permanent magnet synchronous motor (PMSM) with rotor embedded segmented permanent magnet was analyzed. The structural features and flux weakening principle are introduced. The shape of the rotor is optimized to get a sinusoidal air gap magnetic density waveform and reduce the toque ripple. The whole-permanent-magnet (PM) motor and the segmented-permanent-magnet motor are compared from the asp...

Permanent Magnet Brushless DC Motor (PMBLDC) is one of the best electrical drives that has increasing popularity, due to their high efficiency, reliability, good dynamic response and very low maintenance. This makes the interest of modeling an ideal PMBLDC motor and it’s associated Drive System in simple and lucid manner. In this paper the drive system is proposed with a buck converter topology...

The permanent magnet synchronous motor (PMSM) and the brushless dc motor (BDCM) have many similarities; they both have permanent magnets on the rotor and require alternating stator currents to produce constant torque. The difference in these two machines is that the PMSM and the BDCM has sinusoidal and trapezoidal back emfs, respectively. This means these two machines have different operating c...

In order to study the method for reducing losses in cryogenic permanent magnet motors LNG pumps, design of a submersible brushless DC motor is presented this paper. First, materials used were tested at room temperature and low temperature, BH curve BP silicon-steel sheet obtained. Next, power supply PWM analyze influence power-supply mode on loss. Finally, based calculation results loss, abilit...

This work deals with the design and simulation of buck converter inverter fed PMBLDC drive system. Permanent Magnet Brushless DC Motor (PMBLDC) is one of the best electrical drives that has increasing popularity due to their high efficiency, reliability, good dynamic response and very low maintenance. This develops the interest of preparing an ideal PMBLDC motor and its associated Drive System ...

In this paper effort is made for the torque ripple minimization of 70 W, 24 Volt, 350 rpm, surface mounted radial permanent brushless DC (SPM BLDC) motor. The stator slot shaping is analyzed. The results obtained from FE analyses have been discussed. Design of stator slots have influence upon the cogging torque. Options available for slot designs viz, square type slots, square with curved tangs...

The interdisciplinary nature of complex design poses the challenge of computational burden due to complexity of the problem. In view of this a design methodology has been proposed in this work. The primary goal of the proposed methodology is to simplify and shorten the design process. Within this work a framework is presented in which modelling, multiobjective optimisation and multi criteria de...