Control of a dual stator winding induction machine as a source of DC power

This paper investigates the use of a dual stator winding squirrel-cage induction machine for generating dc power using series or parallel connected ac-dc PWM rectifiers. The operating principles and constraints when generating under minimum total copper loss condition are explored using the machine steady-state model considering magnetizing flux saturation effects. Regulation of the dc voltage using concepts of the nonlinear input-output linearization method including the design of the controllers are set forth and confirmed to be effective by computer simulation results. Some experimental waveforms of the generator under load are also included in the paper.