Dependence of Current Pulsations of Multi-Phase Electrical Machine on Reduction of Winding Pitch and Scheme of Semiconductor Converter

There are sizeable pulsations in system with multi-phase electrical machines and PWM converters. They are increased under reduction winding pitch and decreased under using of multi-stage and multi-level converters and multi-phase paralleling reactors. Use of multi-stage convert-ers allows appreciably to decrease current load of capacitors in DC link.