scholarly journals Evaluation of Performance of Flux Switching Motor in Segmented Rotor Using Permanent Magnet For Direct Drive

2018 ◽  
Vol 7 (4.30) ◽  
pp. 383
Author(s):  
Enwelum I. Mbadiwe ◽  
Erwan B. Sulaiman
Keyword(s):  
Permanent Magnet ◽  
Electric Motor ◽  
Hybrid Electric Vehicle ◽  
Combustion Engine ◽  
Direct Drive ◽  
Petroleum Resources ◽  
High Torque ◽  
Personal Transportation ◽  
And Performance ◽  
Flux Switching Motor

The torque action provided by combustion engine in conventional vehicles has been boosted by added electric motor, a device which also provide torque, for fuel economy in hybrid electric vehicle. Meanwhile, the complicated nature of combustion engine still poses economic imperatives as petroleum resources are getting depleted. Interestingly, vehicles propelled by electric motor powered by electricity, will completely eliminate combustion engine using fossil oil and also provide clean and reliable vehicles for personal transportation. Since electric motor is a core component, high torque motors are necessary for direct drive application. This papers presents a feasible 24 stator - 10 rotor segments flux switching motor (FSM) using 1 kg weight of PM. FSM is advance form of synchronous machine with double frequency that locates all active materials on the stator only. Permanent magnet (PM) flux source is chosen because it offers loss free excitation without external circuit connection. The JMAG® Studio tool version 14.1 was employed for 2D- FEA design and performance investigation of motor in terms of cogging torque and average torque.  Finally, simulation result of proposed motor successfully achieved 352Nm and constant power of 36kW projecting it as viable candidate for high torque necessary for direct drive application.

Optimization of 6S-14P E-Core Hybrid Excitation Flux Switching Motor for Hybrid Electric Vehicle

2014 ◽  
Vol 695 ◽  
pp. 770-773
Author(s):  
Siti Nur Umira Zakaria ◽  
Erwan Sulaiman
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicle ◽  
Electric Motor ◽  
Hybrid Electric Vehicle ◽  
Combustion Engine ◽  
Permanent Magnet Synchronous Motor ◽  
Excitation Coil ◽  
Hybrid Excitation ◽  
Hybrid Electric ◽  
Flux Switching Motor

Research on hybrid electric vehicle (HEV) which combined battery based electric motor and conventional internal combustion engine (ICE) have been intensively increased since the last decade due to their promising solution that can reduce global warming. Some examples of electric motors designed for HEV propulsion system at present are dc motor, induction motor (IM), interior permanent magnet synchronous motor (IPMSM) and switched reluctance motor (SRM). Although IPMSMs are considered to be one of the successful electric motor used in HEVs, several limitations such as distributed armature windings, un-control permanent magnet (PM) flux and higher rotor mechanical stress should be resolved. In this paper, design improvement of E-Core hybrid excitation flux switching motor (HEFSM) for hybrid electric vehicles (HEVs) applications are presented. With concentrated armature and field excitation coil (FEC) windings, variable flux capability and robust rotor structure, performances of initial and improved 6S-14PE-Core HEFSM are analyzed. The improved topology has achieved highest torque and power of 246.557Nm and 187.302 kW, respectively.

scholarly journals A High Torque Segmented Outer Rotor Permanent Magnet Flux Switching Motor for Motorcycle Propulsion

2018 ◽  
Vol 150 ◽  
pp. 01005
Author(s):  
Enwelum Mbadiwe I ◽  
Erwan Sulaiman ◽  
Ahmad Md Zarafi
Keyword(s):  
Permanent Magnet ◽  
Electric Motor ◽  
Combustion Engine ◽  
Mechanical Energy ◽  
Fuel Oil ◽  
Road Transportation ◽  
Long Distance ◽  
Outer Rotor ◽  
High Torque ◽  
Flux Switching Motor

Electric scooters also known as electric motorcycle are viable and personal means of road transportation have been making their ways into the world markets now because in them, combustion engine with the use of fuel oil for propulsion have been completely eliminated for economic and environmental imperatives. Electric motor which converts electrical energy into mechanical energy is used to overcome the complication of combustion engine. As it is, everyone is opting for combustion engine free and fuel-less type of vehicle. For this reason, manufacturers have exhibited interest, making research on electric motor very attractive. Meanwhile, surface permanent magnet synchronous motor (SPMSM) has been successfully developed having output torque of 110 Nm, the assembly of motor lacked mechanical strength between the rotor yoke and the mounted permanent magnet (PM) which heats up during speed operation, resulting to poor performance. To overcome the challenges laced with SPMSM, this paper presents a novel design of 24 stator 14 pole outer rotor-permanent magnet flux switching motor (SOR-PMFSM) capable of high torque and high performance. It employs an unconventional segmented rotor which has short flux path flow. It also embraces alternate stator tooth windings to reduce material cost. Design specifications and restriction with input DC current are the same with SPMSM. The 2D-FEA by JMAG, version 14 is used to examine the performance of the proposed motor in terms of cogging torque, back-emf, average torque, power and efficiency. Preliminary results showed that torque, power output and efficiency of the proposed motor are 1.9Nm times, 5.8kW times more than SPMSM and efficiency of 84% thus, can sustain acceleration for long distance travel.

Design study and performance analysis of 12S-14P field excitation flux switching motor for hybrid electric vehicle

2015 ◽  
Author(s):  
Zhafir Aizat Husin ◽  
Erwan Sulaiman ◽  
Faisal Khan ◽  
Mohamed Mubin Aizat Mazlan ◽  
Syed Muhammad Naufal Syed Othman
Keyword(s):  
Performance Analysis ◽  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Design Study ◽  
Hybrid Electric ◽  
Field Excitation ◽  
And Performance ◽  
Flux Switching Motor

Thermal Modeling of a Liquid-Cooled PM Traction Motor

2003 ◽  
Author(s):  
Edward Jih ◽  
Thomas Abraham ◽  
Stephen Stella ◽  
Roy Davis ◽  
Bert Dinger ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Permanent Magnet ◽  
Electric Motor ◽  
Hybrid Electric Vehicle ◽  
Effective Properties ◽  
Copper Wire ◽  
Critical Role ◽  
Traction Motor ◽  
Dynamics Analyses

The electric motor plays a critical role for the applications of the Hybrid Electric Vehicle and Fuel Cell Electric Vehicel. It is also well known that thermal constraints represent one of the main limitations in the performance of the electric motor. For example, the electric motor will be short-circuited if the insulation coatings of the copper wire bundles fail. Furthermore, the performance of the permanent magnet electric motor reduces significantly as the rotor magnet temperature increases. In this study, a series of Computational Fluid Dynamics analyses were performed for the design of a liquid-cooled permanent magnet electric motor to achieve better thermal performance. Several thermal tests of a partial permanent magnet traction motor assembly (stator and housing only) were also performed to determine effective properties of the stator slot and thermal contact resistance between stator and housing that may vary due to the manufacturing process. A simplified thermal network model of this system was established from the Computational Fluid Dynamics analyses. Then the critical heat transfer path of this system was identified.

scholarly journals Dynamics and efficiency of planetary gear sets for hybrid powertrains

2015 ◽  
Vol 230 (7-8) ◽  
pp. 1359-1368 ◽  
Author(s):  
M Mohammadpour ◽  
S Theodossiades ◽  
H Rahnejat
Keyword(s):  
Electric Motor ◽  
Hybrid Electric Vehicle ◽  
Combustion Engine ◽  
Planetary Gear ◽  
Transmission Efficiency ◽  
Drive Mode ◽  
Planetary Gear Sets ◽  
Hybrid Electric ◽  
Noise Vibration ◽  
Six Degree Of Freedom

The paper presents a tribo-dynamic model for planetary gear sets of hybrid-electric-vehicle configurations. The model comprises a six degree-of-freedom torsional multi-body dynamic system, as well as a tribological contact model in order to evaluate the lubricant film thickness, friction and efficiency of the meshing gear teeth contacts. The tribological model takes into account the non-Newtonian, thermal-mixed elastohydrodynamic regime of lubrication. Analysis is performed for a hybrid electric C-segment vehicle. The simulated conditions correspond to cases of power supplied by either the engine or the electric motor. The results illustrate that in the electric motor drive mode, improved noise, vibration and harshness refinement would be expected, whereas better transmission efficiency is achieved in the internal combustion engine drive mode.

High Efficiency Permanent Magnet Wheel Motor Design for Light Electric Vehicle Applications

2012 ◽  
Vol 721 ◽  
pp. 313-318 ◽  
Author(s):  
Konstantinos Laskaris ◽  
Effrosyni Theodorou ◽  
Vasilios Papanikolaou ◽  
Antonios Kladas
Keyword(s):  
Permanent Magnet ◽  
High Efficiency ◽  
Direct Drive ◽  
Permanent Magnet Synchronous Machines ◽  
Finite Elements Analysis ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Electromagnetic Characteristics ◽  
And Performance ◽  
Fractional Slot Windings

Permanent magnet synchronous machines with non-overlapping concentrated fractional-slot windings present certain improved electrical characteristics compared to full pitch windings configurations. This paper describes the design process and construction of two 10-pole permanent magnet synchronous motors, featuring full-pitch and fractional-pitch windings. The paper compares these two configurations in terms of performance and efficiency. Both motors have been designed for direct-drive applications with low speed and high efficiency capability and are intended to be used as a traction drive in an electric prototype vehicle. The proposed motors have external rotor configuration with surface mounted NdFeB magnets. The electromagnetic characteristics and performance are computed and analyzed by means of finite elements analysis. These results are finally compared with the experimental measurements on respective prototypes.

Determination of Maximum Loads for Drive Train Components in Thrusters Using Flexible Multibody-System Models

2014 ◽  
Author(s):  
B. Schlecht ◽  
Thomas Rosenlöcher
Keyword(s):  
Electric Motor ◽  
Multibody System ◽  
Combustion Engine ◽  
Dynamic Properties ◽  
Bevel Gear ◽  
Drive Train ◽  
Basic Knowledge ◽  
Accurate Information ◽  
Direct Drive ◽  
Operational Conditions

The usage of modern thrusters allows to combine the functions of the drive and the ship rudder in one assembly, which are separated in conventional ship propulsions. The horizontally oriented propeller is supported in a vertically rotatable nacelle, which is mounted underneath the ship hull. The propeller can directly or indirectly driven by an electric motor or combustion engine. The direct drive requires the installation of a low speed electric motor in the nacelle. The present paper concentrates on indirect drives where the driving torque is transferred by bevel gear stages and shafts from the ship to the propeller. Due to the closed and inaccessible construction high demands on the reliability have to be achieved. Especially for the design of the highly loaded bevel gear stages accurate information to the occurring loads are required. The available experience to the operation of thrusters show, that primarily rarely occurring special load cases must be considered in the design process. Such operational conditions can only be determined by expensive long-term measurements. By means of a detailed multibody system simulation model of the thruster it is already possible to develop a basic knowledge to the dynamic properties of the drive train and to determine design loads for drivetrain components.

Design and Analysis of a Novel Radial Mud Pump Directly Driven by Permanent Magnet Disc Synchronous Motor

2011 ◽  
Author(s):  
J. T. Liang ◽  
S. D. Zhao ◽  
Y. H. Hu
Keyword(s):  
Finite Element Analysis ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
The Novel ◽  
Performance Parameters ◽  
Direct Drive ◽  
Flow Pulsation ◽  
Element Analysis ◽  
And Performance ◽  
Flush Fluid

Mud pump is an important component of drilling equipments, which transports flush fluid like mud or water into bore in order to cool drill and carry debris. In this paper, a novel radial mud pump directly driven by permanent magnet disc synchronous motor (PMDSM) is designed, the influence of different numbers of plunger cylinders on the pump’s flow pulsation is analyzed to determine the pump’s configuration and driving requirement, and the structure and performance parameters of the direct drive PMDSM are calculated by finite element analysis. Compared with conventional mud pumps, the novel pump is characteristic that the structure is simple, working stability and efficiency are greatly improved, also the life of the equipment is extended.

scholarly journals A Novel Direct-Drive Permanent Magnet Synchronous Motor with Toroidal Windings

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 432 ◽  
Author(s):  
Caixia Gao ◽  
Mengzhen Gao ◽  
Jikai Si ◽  
Yihua Hu ◽  
Chun Gan
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Finite Element Models ◽  
The Novel ◽  
Direct Drive ◽  
Low Speed ◽  
Field Versus ◽  
Drive Motor ◽  
High Torque

A direct-drive motor has the merits of low speed, high torque, and elimination of mechanical deceleration mechanisms, and is widely used in various fields. A novel direct-drive permanent magnet synchronous motor is presented herein, in which all coils are wrapped around the stator yoke in the same orientation. The structure of the novel direct-drive permanent magnet synchronous motor with toroidal windings (N-TWDDPMSM) is introduced and its operating principle is analyzed by describing the variation in the armature magnet field versus time. Furthermore, based on the same power grade and mechanical size, several finite-element models of motors with different windings are established using Magnet software to analyze the distribution of magnetic field, back-electromotive force (back-EMF), power-angle characteristics, loss characteristics, etc. Compared with the traditional permanent magnet synchronous motor (T-PMSM), the traditional permanent magnet synchronous motor with toroidal windings (T-TWPMSM), and the N-TWDDPMSM, the N-TWDDPMSM shows advantages of low speed and high torque, and the feasibility and superiority of the N-TWDDPMSM are verified.

Development and Application of Low-Speed and High-Torque Permanent Magnet Synchronous Motor

2012 ◽  
Vol 229-231 ◽  
pp. 888-894 ◽  
Author(s):  
Jun Guo Cui ◽  
Wen Sheng Xiao ◽  
Jian Bo Zhao ◽  
Jing Xi Lei ◽  
Xiao Dong Wu ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Synchronous Motor ◽  
Economic Benefits ◽  
Direct Drive ◽  
Low Speed ◽  
Wide Range ◽  
High Torque ◽  
Pumping Unit

To meet the demands of direct-drive petroleum equipment, developed a low-speed and high-torque permanent magnet synchronous motor. By analyzing and identifying the suitable key parameters such as permanent magnet structure parameters, air gap length, type and size of Stator Slot and so on, designed permanent magnet synchronous motor with the torque 10800 Nm, the rated speed 30 r/min and high efficiency and power factor. Obtained the flux density distribution situation and characteristic curves under no-load working condition through simulation and analysis. Manufactured the low-speed and high-torque permanent magnet synchronous motor and applied it to pumping unit. Test results show that this motor has many advantages such as wide range of speed regulation, small torque ripple, smooth operation and other characteristics. The Direct-drive Pumping Unit used this permanent magnet synchronous motor can save 20% energy than the beam pumping unit, so its social and economic benefits are significant.

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