Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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This paper presents a comparison between two types of control algorithms for a five phase PMBLDC motor used for low power and high torque applications. It presents a fuzzy logic control (FLC) and a classical proportional integral (PI) control. Owing to the simplicity and effectiveness, the proportional integral (PI) controller is widely used in speed control of permanent magnet Brushless DC motor (PMBLDC) drive. However, the disadvantage of the PI controller is its poor capacity in dealing with system uncertainties. Simulation results are presented and analyzed for both the controllers. It is observed that fuzzy logic based controller gives better dynamic responses than the traditional PI controller. Experimental results validate the simulation results. Copyright © 2014 Praise Worthy Prize S.r.l. -All rights reserved.

Electrical

School of Electrical Engineering

Chennai Campus

World University root node

International Review of Electrical Engineering

Experimental evaluation of fuzzy logic based five phase PMBLDC motor drive

In order to reduce the torque ripple and harmonics for smooth operation of the machine and to reduce the amount of heat generated the motor has to be supplied with multi phase supply greater than three phase supply. Selection of even number of phases should be avoided, because it decreases the performance of the motor as poles coincide with each other. So, Five Phase Supply is preferred. A five phase five leg 10 switch inverter fed five phase star connected load operating with five different excitation is simulated and compared with that of three phase conventional inverter.

International Journal of Engineering and Technology

Simulation of five phase voltage source inverter with different excitation for star connected load

In order to achieve high torque at low power with high efficiency, a new five-phase permanent magnet brushless DC (PMBLDC) motor design was analyzed and optimized. A similar three-phase motor having the same D/L ratio (inner diameter (D) and length of the stator (L)) is compared for maximum torque and torque ripple of the designed five-phase PMBLDC motor. Maxwell software was used to build finite element simulation model of the motor. The internal complicated magnetic field distribution and dynamic performance simulation were obtained in different positions. No load and load characteristics of the five-phase PMBLDC motor were simulated, and the power consumption of materials was computed. The conformity of the final simulation results indicates that this method can be used to provide a theoretical basis for further optimal design of this new type of motor with its drive so as to improve the starting torque and reduce torque ripple of the motor. © 2014 M. A. Inayathullaah and R. Anita.

Fulltext

Modelling and Simulation in Engineering

Computer aided modeling and analysis of five-phase PMBLDC motor drive for low power high torque application

This paper presents an advanced modelling, simulation and analysis of a low-power high-torque five phase permanent magnet brushless direct current (PMBLDC) motor drive. For achieving high torque density in the air gap, a 144° mode of excitation is used. The proposed model helps to determine and analyze the dynamic characteristics of the PMBLDC motor such as speed, torque and pulse width modulation (PWM) inverter components such as phase currents and voltages effectively. This model is suggested to be used as an effective tool for the development of five phase PMBLDC motor drive applications including control algorithms and topological variations with reduced computation time and memory size. The entire work is validated using MATLAB simulation software. © 2012 Praise Worthy Prize S.r.l. - All rights reserved.