Browse Publications Technical Papers 1999-01-0739
1999-03-01

A Motor-Drive System Design That Takes Into Account EV Characteristics 1999-01-0739

This paper discusses various design factors that must be considered in achieving a practical motor-drive system for electric vehicles. When we design a motor-drive system for an electric vehicle, pursuit of high efficiency is required, and the system also has to have a good ease of use in practical situation. The following configuration is preferable for the realization of the vehicle that meets these requirements (1) A direct- coupled geartrain is used. (2) A permanent magnet synchronous motor is used as the traction motor. (3) The motor is inverter driven (battery operated) (4) A controller is needed to manage torque characteristics. When we design the motor-drive system using these configuration, we have to resolve various issues of the system concerning the vehicle and drive system performance fir practical use. By resolving these design issues, the practical performance of EVs can be improved and they can also make full use of the advantages of a motor-drive system.

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