Computer Aided Match Method for Matching the Electrical Motor and the Gearbox of the Pure Electrical Vehicle - Advanced Research on Computer Education, Simulation and Modeling - page 8

Computer Aided Match Method for Matching
the Electrical Motor and the Gearbox of the Pure
Electrical Vehicle
HongBin Li, Jian Wang, and JingNuo Yu
Communications School of Ludong University,
264025 Yantai, China
{lhbmv,yujingnuo}@126.com, [e-mail]
Abstract. To improve the power performance and economy synchronously, a
computer aided matching method for match gearbox and the electrical motor of
the pure electrical vehicle is proposed. The method is based on the testing data
of the electrical motor. The maximum ratio, the minimum ratio, the gears
number and other ratios are chosen according the analysis result of these testing
data. The MATLAB is used as the calculating tool. The matching results of the
designing case shows that this method is effectively.
Keywords: Computer aided, Matching, Gearbox, Pure electrical vehicle,
MATLAB.
1 Introduction
In order to cope with the challenge of the energy contraction, pollution, the pure
electrical vehicle which adopts the electrical motor as the driving part has become the
researching hotspot. Contrasting with the engine, the power of the electrical motor is
constant in wide speed scale. Hence, the gearbox in the pure electrical can be replaced
by a fixed reducer whose ratio is optimized. [1-2] But if the speed of the vehicle leave
the optimization point, the optimization are all declined. Then the two ratios gearbox
is used presently. [3-4] But these two ratios of the gearbox are designed only
according the power performance.
To improve the power and economy performance synchronously, the gearbox must
be designed correspond the character of the electrical motor. So a computer aided
matching method for match gearbox and the electrical motor of the pure electrical
vehicle is proposed based on the MATLAB.
2 Choosing the Power of the Electrical Motor
The pure electrical vehicle designed in this paper is a low speed vehicle. Whose full-
load weight is 2000kg, the maximum speed is 100km/h, the maximum grade ability is
30%, the acceleration time from 0 to 50km/h is 10 seconds.
Refer to reference [5], the power of the electrical motor should not less than the
loading power according the maximum speed. Viz.