Design Analysis and Performance Improvement of Radial Flux Permanent Magnet Brushless Dc Pmbldc Motor

Abstract

quotElectrical motors influence many aspects of our daily life as they are widely used in various industrial and commercial applications. Electrical motors are used in electric drive systems. Efficiency and compactness are the two key performance parameters of an electrical motor. Electricity demand is increasing at a rapid pace. Reductions in energy consumption and lower carbon dioxide emissions are essential to protecting the environment. Since electric motors consume over two-thirds of electrical energy generated, electric motor efficiency and energy management have generated immense concern. Even a 1 % improvement in the efficiency of electrical motors will save billions of units per year and reduce carbon dioxide emissions. The development and commercialization of highly efficient electric motor drives have become a major necessity. The use of high-efficiency electric motor drives in place of conventional electric motor drives will reduce the consumption of electric energy substantially. In addition to efficiency, compactness is also a very important requirement in many applications. The development of a compact electric motor with high operational efficiency is very important. The motor designer aims to design a compact and efficient electric motor. This research work aims to design and improve the performance of the radial flux permanent magnet brushless dc (PMBLDC) motor. newlineThe use of a permanent magnet (PM) material in place of electromagnetic excitation markedly increases the operational efficiency and reduces the motor size for the same output power. The radial flux PMBLDC motors are classified into two types according to the placement of PMs on the rotor. They are (1) the Surface Permanent Magnet (SPM) motor and (2) the Interior Permanent Magnet (IPM) motor. The radial flux PMBLDC motor offers high efficiency, high power density, compactness, wide speed range, high torque to current ratio, and fast dynamic response. In this research work, three different radial flux surface mounted PMBLDC motors of rating