The vector controlled asynchronous actuator and its using possibilities for embarked applications

The vector control awards to the induction motor a precision and qualities comparable with those of DC or brushless machines. For embarked applications, the shortcoming that appears in the usual proceedings is the necessity of maintaining a constant magnetic flux, therefore creating a permanent heat dissipation and consuming, continuously, energy from the supply. The aim of this study is to conciliate the high dynamical performances offered by the vector control with the necessity of being sparing of embarked energy. A novel vector strategy is suggested, which allows one to master the torque, to increase the efficiency and to nullify the consumption of energy while the motor is not being requested. The performances are illustrated by an orientation servo control of the rear wheels for a four directional wheeled vehicle. The definition, simulation, and experimentation results, in steady and dynamical state, are presented. The concordance between simulation and results ratify the suggested strategies. Even for embarked applications, the induction motor, well-known for robustness, very cheap manufacturing and quasi-non-existent maintenance, competes with DC or brushless machines