Control Techniques for Dual-Three-Phase SPM Drives Including Voltage Limitation Strategies

This study examines the management of the voltage limits in the control of dual-three-phase permanent magnet drives. The research is centered on two main control methods. The first method involves the design of independent controllers to manage individual three-phase modules. The second method utilizes all controllers to optimize the tracking of the six reference currents simultaneously. Both strategies aim to optimize the use of the available DC-link voltage in each three-phase inverter while taking into account the full hexagonal limitation of the voltage vectors. Different algorithms and the main governing equations are presented. Simulations in Matlab/Simulink, which reproduce the behavior a dual-three-phase permanent magnet motor, show the differences for the developed techniques in the distortion of the phase current.