Flux optimization

Flux optimization is a function that allows operation of an asynchronous motor in VFC^PLUS control mode with minimal losses. Depending on the torque setpoint, the magnetic flux is managed in such a way that the motor is operated with minimum current. In partial load operation, as well as in case of overload, the total losses of the motor can be significantly reduced. This function has no influence in the range of the nominal torque or a bit below, as the motor is usually operated at almost optimum conditions.

For system-related reasons, the torque control times are longer with flux optimization than without flux optimization, due to necessary changes in flux. The flux optimization is especially suitable for applications with little dynamics, such as fans, pumps, escalators, and conveyor systems with constant speed.

The flux optimization can reduce magnetization losses in the motor by up to 70%.