Optimization of In-Wheel Permanent Magnet Synchronous Motor for Electric Car

2015 ◽  
Vol 4 (3) ◽  
pp. 1-17
Author(s):  
Hejra Msaddek ◽  
Ali Mansouri ◽  
Trabelsi Hafedh
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Optimization Method ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Machine Model ◽  
Element Analysis ◽  
Engine Efficiency ◽  
Electric Car ◽  
Outer Rotor

The objective of this work is to find the optimal geometric parameters for the design of permanent magnet synchronous machines (PMSM) with inversed structure (outer rotor) for electric vehicles applications. Firstly, the machine model is presented with a special attention given to the calculation of the mass and engine efficiency. A multi objective optimization based on the genetic algorithm is then implemented. It will determine the parameters values that optimize the chosen criteria while respecting the specifications: to minimizing the total mass and maximizing the machine efficiency. Finally, 2D steady-state finite element analysis is used for to verify the results given by the optimization method.

scholarly journals Analysis of Six-Phase Interior Permanent Magnet Synchronous Machines for Optimal Parameter Considerations

2018 ◽  
Vol 7 (2) ◽  
pp. 139
Author(s):  
Tanmoy Dey ◽  
Amit Kumar Chowdhury ◽  
Sk Mehboob Alam ◽  
Surajit Mondal
Keyword(s):  
Permanent Magnet ◽  
Optimal Parameter ◽  
Operating Conditions ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Machine Model ◽  
Element Analysis ◽  
Interior Permanent Magnet ◽  
And Performance ◽  
Power Region

Understanding the merits of six-phase interior permanent magnet synchronous machines (IP-MSMs) over their three-phase counterparts, this paper analyses the six-phase machine for optimal parameter and performance considerations. Initially, a mathematical model of the six-phase IPMSM is developed employing the dq-axis theory and performance predicted by the model is verified under identical operating conditions with those using a machine designed and tested through finite element analysis (FEA). The developed and verified machine model is then employed to exclusively derive the relation between various machine parameters in order to obtain optimum flux weakening region in the six-phase IPMSM. Thereafter, the equations derived on the basis of maximum torque per ampere (MTPA) control theory are analyzed to understand the effect of various parameters and variables in influencing the machine’s performance in the ‘constant torque’ region and ‘constant power’ region, power output capability, a ratio of reluctance torque to magnet-assisted torque with changes in the stator current vector etc. This is the contribution of this paper.

scholarly journals Ferrites and Different Winding Types in Permanent Magnet Synchronous Motor

2012 ◽  
Vol 63 (3) ◽  
pp. 162-170 ◽  
Author(s):  
Peter Sekerák ◽  
Valéria Hrabovcová ◽  
Juha Pyrhönen ◽  
Lukáš Kalamen ◽  
Pavol Rafajdus ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
High Power ◽  
Low Cost ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Synchronous Machines ◽  
Stator Winding ◽  
Permanent Magnet Synchronous Machines ◽  
The Third ◽  
Slot Opening

Ferrites and Different Winding Types in Permanent Magnet Synchronous MotorThis paper deals with design of permanent magnet synchronous machines with ferrites. The ferrites became popular due to their low cost and cost increasing of NdFeB. The progress in ferrite properties in the last decade allows the use of ferrites in high power applications. Three models of ferrite motors are presented. It is shown that also the type of stator winding and the shape of the slot opening have an important effect on the PMSM properties. The first motor has a distributed winding, the second motor has concentrated, non-overlapping winding and open stator slots. The third motor has a concentrated non-overlapping winding and semi - open slots. All models are designed for the same output power and they do not have the same dimensions. The paper shows how important the design of an electric machine is for excellent motor properties or better to say how the motor properties can be improved by an appropriate design.

Voltage THD Improvement for an Outer Rotor Permanent Magnet Synchronous Machine

2013 ◽  
Vol 14 (5) ◽  
pp. 459-465 ◽  
Author(s):  
Javier de la Cruz ◽  
Juan M. Ramirez ◽  
Luis Leyva
Keyword(s):  
Permanent Magnet ◽  
Harmonic Distortion ◽  
Synchronous Machines ◽  
Design Parameters ◽  
Permanent Magnet Synchronous Machine ◽  
Permanent Magnet Synchronous Machines ◽  
Skew Angle ◽  
The Core ◽  
Outer Rotor ◽  
Rotor Poles

Abstract This article deals with the design of an outer rotor Permanent Magnet Synchronous Machines (PMSM) driven by wind turbines. The Voltage Total Harmonic Distortion (VTHD) is especially addressed, under design parameters’ handling, i.e., the geometry of the stator, the polar arc percentage, the air gap, the skew angle in rotor poles, the pole length and the core steel class. Seventy-six cases are simulated and the results provide information useful for designing this kind of machines. The study is conducted on a 5 kW PMSM.

Numerical Simulation of Heat Transfer Characteristic of Aluminum Nitride (AlN) Potting Compound for the End Windings of Permanent Magnet Synchronous Machines with Experimental Verification

2013 ◽  
Vol 347-350 ◽  
pp. 1127-1131
Author(s):  
Xiang Tai ◽  
Tao Fan
Keyword(s):  
Numerical Simulation ◽  
Aluminum Nitride ◽  
Permanent Magnet ◽  
Heat Dissipation ◽  
Permanent Magnet Synchronous Motor ◽  
Transfer Characteristic ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Compound A ◽  
Potting Compound

In the field of electric vehicles, the high power density demand for the permanent magnet synchronous motor (PMSM) has made the thermal management a great challenge, especially the end winding. For enhance the heat dissipation for end winding, Aluminum Nitride (AlN) potting compound is introduced. Numerical simulation is performed in this paper to evaluation the effect of usage of potting compound. A prototype motor is built up with the end winding filling with the proposed potting material. Experiment shows that the heat dissipation has improved compared with the baseline motor.

Further study of linear PMSM driven ropeless lifts with consideration of imperfections by simulation

2019 ◽  
Vol 40 (6) ◽  
pp. 682-697 ◽  
Author(s):  
Albert So ◽  
WL Chan
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Analytical Calculation ◽  
Stable Operation ◽  
Mathematical Framework ◽  
Permanent Magnet Synchronous Machines ◽  
Machine Model ◽  
High Rise ◽  
Small Footprint ◽  
Free Falling

To provide a satisfactory lift service to super high-rise buildings (while maintaining a small footprint for the lift hoistways), ropeless multi-car per hoistway system may be the trend. In our previous paper, a simplified machine model and two primitive controllers were adopted and various features of such a ropeless lift car driven by a linear permanent magnet synchronous motor were illustrated by simulation. In this paper, imperfections including pole saliency, various types of friction such as Coulomb, viscous and Stribeck friction, cogging force and end-effect, etc. were considered. The controllers, control interval and simulation interval were improved in both quantity and quality to arrive at a controllably stable operation. For safety during a genuine power failure, the free-falling terminal speed was estimated both by analytical calculation and computer simulation with consideration of such imperfections. It was confirmed that a desirable operation could be achieved by having smaller and practical winding resistance and inductances, larger and practical permanent magnet magnetic flux, and an optimal pole pitch. This paper could be considered an enhanced version of the pervious paper in that the illustration is more realistic when imperfections are considered. It is hoped that experimenters would further verify the findings in this paper so that such technology could become popularly employed in the future lift industry. Practical application: Multi-dimensional multi-car in a hoistway configuration involving linear permanent magnet synchronous machines would become popular in the near future. This paper introduces a more comprehensive mathematical framework by taking into account of the imperfections in the design and evaluation of controllers as well as the drive performance for a multi-car lift system. The results may give lift designers and researchers a hint on how to design the machines and the controllers with the consideration of imperfections in terms of winding design with variation in resistance, inductance, magnetic field strength, pole pitch, saliency and different types of friction. The paper is aimed at providing lift designers and researchers with a more realistic picture to welcome the new age of multi-car multi-dimensional lift technology.

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