This paper presents electric vehicle development and achievement design. The pure electric bus namely “PEA Zero-emission bus” is developed by Suranaree University of Technology together with local bus body builder in Thailand. The numerous fundamental hardware components are introduced and designed base on the physics of motion, energy and power. The traction motor and battery sizing design are introduced to achieve requirement by using presented equation. The 2×120 kW rated power of traction motor and the 196 kWh 320Ah of power battery capacity are installed for 190 km driving per charge. It is also presented alongside its road test results. The power consumption is studied by variety of number of passenger and driving speed with three scenarios. It shows that the electric bus has 0.835 kWh/km and the driving speed is the most factor of power consumption per this road test result. Moreover, the power consumption expense of electric bus and engine bus are studied and compared. The cost expense are interpreted by the power consumption rate data and shows electric bus can save double cost expense lower than engine bus. In particular of testing result confirmed the possibility to replace the conventional bus operation by electric bus in Thailand.

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