scholarly journals Lightweight High-Efficiency Power Train Propulsion with Axial- Flux Machines for Electric or Hybrid Vehicles

2019 ◽  
Author(s):  
Sorin Ioan Deaconu ◽  
Vasile Horga ◽  
Marcel Topor ◽  
Fabrizio Marignetti ◽  
Lucian Nicolae Tutelea ◽  
...  
Keyword(s):  
High Efficiency ◽  
Hybrid Vehicles ◽  
Axial Flux ◽  
Power Train

scholarly journals Research on a novel axial-flux magnetic-field-modulated brushless double-rotor machine with low axial force and high efficiency

AIP Advances ◽  
2017 ◽  
Vol 7 (5) ◽  
pp. 056668
Author(s):  
Chengde Tong ◽  
Zhiyi Song ◽  
Jingang Bai ◽  
Jiaqi Liu ◽  
Ping Zheng
Keyword(s):  
Magnetic Field ◽  
Axial Force ◽  
High Efficiency ◽  
Axial Flux

A New Powertrain System for Electric Hybrid Vehicles

2014 ◽  
Vol 577 ◽  
pp. 408-411
Author(s):  
Ren Guang Wang ◽  
Ming Jun Zhang ◽  
Chuan Long Shi
Keyword(s):  
Electric Vehicle ◽  
Electric Motor ◽  
Planetary Gear ◽  
Hybrid Vehicles ◽  
Regenerative Braking ◽  
Power Train ◽  
Powertrain System ◽  
Electric Driving ◽  
Left And Right ◽  
Different Parts

A new powertrain system was developed for electric vehicle driving application with adoption of one electric motor and one set of planetary gear set. With the control of fork, the sleeve of synchronizer can mesh two different parts on the left and right side; the system can provide pure electric driving, hybrid driving and regenerative braking operation modes to meet vehicle practical conditions. It can reduce both power train structure size and cost with fewer parts.

scholarly journals The Effects of Cogging Torque Reduction in Axial Flux Machines

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 323
Author(s):  
Samuel Mengesha ◽  
Shailendra Rajput ◽  
Simon Lineykin ◽  
Moshe Averbukh
Keyword(s):  
Permanent Magnet ◽  
Output Power ◽  
High Efficiency ◽  
Experimental Testing ◽  
Axial Flux ◽  
Optimal Angle ◽  
Cogging Torque ◽  
Good Potential ◽  
Low Mass ◽  
The Impact

An axial flux permanent magnet single-rotor generator has good potential in various applications that require high efficiency, prolonged service life, as well as low mass and dimensions. However, the effect of cogging torque diminishes generator efficiency and flexibility of functionality. The effect of cogging torque arises because of a small air gap between the stator teeth and the rotor. In this article, we suggest that shifting the opposite teeth of the stator to the optimal angle can reduce the effect of cogging torque. A special axial flux permanent magnet generator is developed to choose the optimal disposition of the permanent magnet and stator teeth in the frame. The impact of the optimal angle on the cogging torque, output power, and generator efficiency is investigated. This analytical study with experimental testing proves that the optimal angle between opposite teeth can significantly decrease cogging torque and improve output power and efficiency. The results show that cogging torque decreases significantly (4–5 times) at an optimal angle of 7.5° as compared with that of other angles, although magnetic flux and output power decline slightly but efficiency increases.

scholarly journals Desain dan Simulasi GMP Fluks Aksial Berbasis Dimensi Magnet Permanen Komersil

2020 ◽  
Vol 8 (3) ◽  
pp. 602
Author(s):  
PUDJI IRASARI ◽  
PUJI WIDIYANTO ◽  
MUHAMMAD FATHUL HIKMAWAN
Keyword(s):  
Permanent Magnet ◽  
Output Power ◽  
Permanent Magnets ◽  
High Efficiency ◽  
Voltage Drop ◽  
Design Calculation ◽  
Axial Flux ◽  
Terminal Voltage ◽  
Permanent Magnet Generators ◽  
Simulation Results

ABSTRAKMakalah ini membahas desain dan simulasi generator magnet permanen fluks aksial 500 W, 220 V, 500 rpm, 1 fasa, stator tunggal tanpa inti besi lunak dan rotor ganda berbahan baja karbon. Tujuan studi adalah untuk mengetahui performa generator pada dua jenis pembebanan yaitu beban RL dan ZL. Metode perhitungan desain dilakukan secara analitik dan numerik menggunakan perangkat lunak FEMM 4.2 dengan berbasis pada dimensi magnet permanen komersil. Performa generator yang dianalisis meliputi tegangan terminal, daya keluaran dan efisiensi. Hasil simulasi menunjukkan bahwa ketika diberi beban RL, daya keluaran dan efisiensi generator lebih tinggi dibanding ketika diberi beban ZL. Grafik tegangan terminal dari kedua jenis pembebanan tersebut sebagian berimpit tetapi pada beban RL tingkat penurunannya lebih tajam disebabkan tegangan jatuhnya lebih besar. Dari semua hasil perhitungan dan simulasi, dapat disimpulkan bahwa generator menunjukkan performa yang baik pada kedua jenis pembebanan dengan efisiensi sekitar 80%.Kata kunci: generator, magnet permanen, fluks aksial, stator tunggal, rotor ganda ABSTRACTThis paper discusses the design and simulation of 500 W, 220 V, 500 rpm axial flux permanent magnet generators, with the construction of coreless, single stator, and double rotor made of carbon steel. This study aims to find out the performance of the generators in two types of loadings, namely RL and ZL loads. The design calculation method is done analytically and numerically using FEMM 4.2 software based on the dimensions of commercial permanent magnets. The generator performances analyzed include the terminal voltage, the output power, and the efficiency. From the simulation results, it is known that under load RL, the output power and efficiency are higher than under load ZL. The terminal voltage graphs of the two types of loadings partially coincide but at the RL load, the rate of the decline is sharper due to the greater voltage drop. From all the results, it can be concluded that the generator shows good performance on both types of loads with a quite high efficiency, which is around 80%.Keywords: generator, permanent magnet, axial flux, single stator, double rotor

Axial-Flux Motor System Efficiency in a Solar Powered Vehicle

2005 ◽  
Author(s):  
Scott Hammack ◽  
Dale Schinstock
Keyword(s):  
Motor System ◽  
High Efficiency ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Air Gap ◽  
System Efficiency ◽  
Direct Drive ◽  
Axial Flux ◽  
Solar Powered ◽  
Motor Operation

This paper presents a study of maximizing motor system efficiency for a solar powered vehicle by providing guidelines for the setup and operation of the motor system. It describes the vehicle, the motor system, and the dynamometer used for testing. Solar racecars use the axial flux motor described in the work because of its high efficiency, direct drive feature, and lead screw driven variable air gap. We present efficiency test results at a range of operating points. Motor operation in drive and regeneration modes is covered. During regeneration mode testing, the axial flux motor system converts mechanical energy provided by the dynamometer to electrical energy. In drive mode, the dynamometer absorbs the mechanical energy produced by the axial flux motor. The parameters varied in studying motor efficiency are battery voltage, speed, torque, and air gap size. Regeneration efficiency as influenced by back EMF is discussed. Guidelines for motor operation are developed. For example, guidelines for setting the motor air gap as a function of speed are given. The users of solar powered vehicles can employ these guidelines to setup and operate the motor more efficiently through improved regenerative energy capture and decreased drive losses. Application of the guidelines may be extended to other electric and hybrid vehicles, thus improving automotive energy efficiency.

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