High-performance PM synchronous motor drive for an electrical scooter

In this paper, the design of a full electrical system for an electrical sco oter is presented. The paper explains the design choices that have been mad e to satisfy the typical main requirements for an electrical vehicle. Accor ding to them, an interior permanent-magnet synchronous motor has been incor porated in a drive able to control the motor both in the constant-torque (c onstant-flux) and in the constant-volt-ampere (flux-weakening) regions. Exp erimental results carried out on a system prototype are also included in th e paper.