This activity intends an optimized control strategy for interior permanent-magnet (IPM) synchronous machines.

More in detail this paper suggests a control strategy to keep control of the electrical machine at high speed when a fast torque setpoint variations occurs (such as during braking operations).

Two different traditional control schemes for flux weakening strategies were modified to tackle the fast torque setpoint variation at high speeds.

The proposed control schemes were validated both via Matlab/Simulink simulations on a lumped-parameter model of the powertrain and via extensive tests on a dedicated test bench.

Activity results show that the modified control strategies allowed to improve control robustness and repeatability in case of unexpected braking condition.