International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 05 | May 2023
p-ISSN: 2395-0072
www.irjet.net
Electromagnetic Design of a 7kW Permanent Magnet Synchronous Motor for a Two-Wheeler Gareema Waraich1, Dharamraj Saini2, Dr. C.S. Boopathi3 1,2 Assistant Manager,Dept of Operation JSW Energy ,Barmer ,Rajasthan 3Associate Professor,Dept of Electrical and Electronics Engineering, SRM Institute of Science and Technology,
Kattankulathur , Chennai ---------------------------------------------------------------------***---------------------------------------------------------------------ABSTRACT The design and analysis of a motor can be divided into 4 sub categories namely preliminary assumptions, electromagnetic design, thermal and cooling analysis and mechanical design and dimensioning. In this paper we focus only on the electromagnetic design aspect. The electromagnetic process can be further categorized into design and calculations of the magnetic circuit, the sizing and the slot leakage reactance.
The focus and interest on Permanent Magnet Synchronous Motor has been continuously increasing, thanks to their properties which are deemed suitable for a variety of applications especially in automobiles. This paper presents an approach to electromagnetically design of a 7kW PMSM that will in turn be responsible for propelling a two wheeled electric vehicle. The nominal parameters like air gap, structure dimensions, slot size, pole number, etc have been calculated mathematically during the design of the motor and accordingly a 12s8p Interior Permanent Magnet motor has been presented. The approach taken to make an integrated design has been explained and the results have been quantitatively verified .The proposed design has been optimised and simulated using Flux Motor Software
Firstly we compute and fix the basic geometrical data and the motor topology [2]. According to this, the electromagnetic design and analysis is done. Optimization is a vital part in designing a high performance machine. A variety of applications with different performance requirements may be improved by selecting optimum geometry dimensions, material properties and excitations. In this paper we focus on the electromagnetic design and analysis of a PMSM motor in the electric power train of a two wheeler. It includes the evaluation of various factors including rotor topologies ,winding patterns, air gaps amongst a few. The specifications of the motor designed are mentioned in table 1.
Keywords: PMSM, magnet, winding, air gap, magnetic circuit, electromagnetic I. INTRODUCTION
In an era where the industry is gradually shifting towards electric vehicles due to increasing concerns pertaining to climate change, the focus on development and design of motors has increased a lot. The growing demand of electric vehicles has fuelled an increase in the demand of PMSMs. Vehicular motors should have a high power density [1], high torque to current ratio and well as be high efficiency. PMSMs are a very attractive option due to their compactness, high performance and low maintenance. A lot of constraints have to be kept in mind while designing a light weight motor that caters to the requirement and is within a particular cost bracket. Along with this, the primary goal is to develop a highly efficient motor that will in turn contribute to lower losses and lower carbon emissions while reducing the motor volume, decrease the space occupied by it and improve material utilization. Along with this, ease of manufacturability, installation, maintenance, raw material required and the technology used to implement are a few things that are considered while selecting or designing a motor.
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Impact Factor value: 8.226
Table 1: Motor Specifications
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Peak Torque
32 N.m
Peak Power
7 kW
Speed
2000 rpm
Line current, rms
145 A
Line-line voltage, rms
44 V
Current Density
19 A/mm2
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