Analysis and Steady-State Behavior of an Optimized AC Converter Machine

AC machines presently designed to operate from a solid state power converter retain a sinusoidal winding distribution even though such machines were originally intended only for operation with sinusoidal rather than rectangular power supplies. This paper describes a unique type of concentrated winding machine in which the winding distribution is intentionally rectangular to better accomodate the rectangular waveforms of conventional six pulse converters. Equations which define steady state are derived and compared with tested results on an actual prototype. Both generating and motoring modes are investigated and conditions are identified for optimal operation of this new machine.