Optimal Performance Control of Axial-Flux Wheel Motor for Hybrid Electric Vehicles
Date Issued
2006
Date
2006
Author(s)
Liao, Shuo-Kun
DOI
zh-TW
Abstract
The objective of this research is to improve the performance of axial-flux wheel motor. We attempt to scheme out a set of control strategy to maximize the driving torque, rated speed and efficiency.
This optimal performance control strategy composes of three parts. First, the driving current waveform is proven to be the same as the back EMF to produce maximum torque. Second, the series and parallel connections of motor windings constitute various gears. The low speed or accelerating operation consumes larger current while the high speed or crusing mode needs higher voltage but less current. With appropriate electric gearshift on motor windings, one can fulfill these driving conditions. Last, the back EMF can be reduced by adjusting advanced conduction angle. Thus the motor operating region extends once again and leads to achieve constant-power operation.
In this paper, the experimental data are obtained carefully as the result of design of experiments. Randomization and replication are adopted to average out the effects of extraneous factors and obtain an estimate of the experimental error. With the concept of statistics, the experimental results will be more accurate and reliable.
Subjects
直驅式馬達
最佳電流波形
電子換檔
弱磁控制
有限元素分析
In-Wheel Motor
Optimal Current Waveform
Electric Gearshift
Field-Weakening Control
Finite Element Analysis
Type
thesis
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