Electrical traction of vehicle needs accurate control of torque and flux. DC machines
are Maynly used but they are expensive and need heavy Mayntenance. Since some years,
the use of field oriented vector control induction machines allows to fulfill the same
objectives with lower cost. Unfortunately, they may present a decrease of their
performances and an instability when their parameters vary with the temperature or the
magnetic state and in the presence of converter or measurement noises. Therefore it is
necessary to design effective control laws, which are especially less sensitive to
these perturbations and variations. In this work, we have undertaken the conception and
the realization of a voltage vector flux control whose inputs have been uncoupled by
compensating terms. The torque and the flux regulations are realized at two different
levels: an internal regulation loop for stator currents, and an external one for flux
and torque. In order to achieve robust stability and performance objectives, we have
involved several new methods in the doMayn such as H∞ control designed by
genetic algorithms and reduced order extended Kalman filtering in the synchronous
frame. Simulations will show the method efficiency and experimental results validate
the control strategy.