|Conţinutul numărului revistei|
|Ultima descărcare din IBN:|
|Problemele Energeticii Regionale|
|Numărul 1(21) / 2013 / ISSN 1857-0070|
Analysis of operation of symmetrical six-phase (dual three-phase) ac drive system (which is perspective for the medium-power and high-power applications) with synchronized pulsewidth modulation (PWM) during overmodulation has been performed. The induction machine of this system topology has two sets of windings spatially shifted by 60 electrical degrees with isolated neutral points, which are connected with two standard three-phase inverters. Algorithms of synchronized PWM provide continuous synchronization of the phase voltage of the system in the zone of overmodulation. Simulation results are given for dual three-phase systems with two
discontinuous versions of synchronized PWM, and with combined synchronized scheme of pulsewidth modulation.
symmetric six-phase induction motor, converter control, modulation strategy, phase voltage synchronization