Modeling and Control of a Dual-Stator-Winding Induction Machine Drive

Abstract

Modern induction machine drives with a dual stator winding design are the subject of this research.   The induction machine that is being proposed has a rotor that is designed in the shape of a squirrel cage, and the stator has two separate windings that allow for different pole counts.   A one-of-a-kind inverter that is able to independently adjust both the voltage and the frequency is contained within each of the windings of the rotor each.   The proposed drive eliminates the requirement for a speed sensor and provides superior control over the torque-speed curve of the motor in comparison to the alternative option.   Because it divides the stator currents, the drive that is being proposed makes it possible for the motor to operate at zero revolutions per minute (rpm).   Because of this, the power frequency is guaranteed to remain unchanged regardless of the speed at which the machine is operating.   This feature enables control strategies that are independent of speed monitoring, which is essential for mitigating the detrimental impacts of stator resistance at low motor speeds.   Extremely high performance can be achieved by the drive through the utilization of field-oriented (FO) control or stable voltages per hertz.   The presence of harmonic currents can be found in approximately fifty percent of machines that make use of two stator windings.   There is a decrease in the speed of these currents as a result of the fact that the number of poles in each turn varies.