Integration of Propulsion System and Performance Test for Direct-Driven Electric Motorcycles
Date Issued
2005
Date
2005
Author(s)
Lo, Chi-Fong
DOI
zh-TW
Abstract
This research aims to integrate the propulsion system to test the performance of the direct-driven electric motorcycles. The propulsion system of the dedicated vehicle consists of a stack of batteries, motor controller and drive, axial-flux disk-type four-phase bushless dc motor, and the display of the state of capacity of batteries. The series and parallel connections of batteries and motor windings constitute various gears, drive-by-wire into realization in the light of the implementation on the field programmable gate array (FPGA) chip.
The integration of the novel propulsion system is tested on the 4th generation wheel motor; the old one has larger diameter, more turns on winding, larger torque, but lower speed than the new one. Fist, the shift points of gear are determined by investigation the efficiency and torque curves for various gears, in such a way that the driving smoothness and efficiency during the gear shifts are satisfactory. Second, the performance on acceleration, slope climbing, maximum speed, and driving range if tested on road, dynamometer and a motorcycle test platform. During the driving range test, the state of capacity, or residual capacity, is recorded and displayed by continually measuring and calculation ampere-hours and transient open-circuit voltage, coded in the FPGA chip.
The experimental results show that the new 4th generation wheel motor has batter performance than the old one. The driving range test under the same condition shows that the new 4th generation motor is superior over the old one and a commercial product. However, the dedicated propulsion system of the direct-driven motorcycle need further development and improvement, to fulfill stringent environmental laws as well as to satisfy consummers’ need.
Subjects
電池串並聯
繞組串並聯
殘電顯示
The series and parallel connections of batteries and motor windings
residual capacity
Type
thesis
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