Control and Integration of a multiphase Brushless Wounded Synchronous Motor Drive

This paper presents a fully integrated seven-phase Brushless Wounded Rotor Synchronous Motor BWRSM machine drive and its control. A direct integration strategy of the power electronics on the motor case is performed. Advanced PCB integration with embedded die are used for low profile rotary transformer. For the control side, the machine was modelled by Finite Element Method (FEM) in order to extract the flux tables. These tables were then used to improve the precision of analytic simulation model. By using so obtained analytic simulation with integrated flux tables designed field-oriented control was verified. Details on design and the model are presented in the paper. Finally, the controller's efficiency and the power electronics of the motor drive are confirmed with experiments on described prototype machine.