Space-vector-based synchronized PWM algorithms have been applied to the control of a dual-inverter fed open-end winding induction motor drive supplied by two isolated dc sources with non-equal voltages. It has been shown that algorithms of synchronized PWM provide continuous phase voltage symmetry for any ratio (integral or fractional) of switching frequency to fundamental frequency of the inverters and also for any ratio between the two dc source voltage levels of these systems. Phase voltage spectra of open-end winding drives for both continuous and discontinuous schemes of synchronized PWM do not contain even harmonics and sub-harmonics during the whole control range, including the zone of overmodulation which is especially important for the medium and high-power traction systems.
Synchronized PWM Control of Asymmetrical Dual-Inverter Fed Open-End Winding Traction Drive / G. Grandi; V. Oleshuk; F.A. Dragonas. - STAMPA. - (2012), pp. 1-8. (Intervento presentato al convegno IEEE International Conference on Electrical Systems for Aircraft, Railways, Ship Propulsion and Road Vehicles - 2012 Edition tenutosi a Bologna, Italy nel October 16-18, 2012) [10.1109/ESARS.2012.6387480].
Synchronized PWM Control of Asymmetrical Dual-Inverter Fed Open-End Winding Traction Drive
GRANDI, GABRIELE;
2012
Abstract
Space-vector-based synchronized PWM algorithms have been applied to the control of a dual-inverter fed open-end winding induction motor drive supplied by two isolated dc sources with non-equal voltages. It has been shown that algorithms of synchronized PWM provide continuous phase voltage symmetry for any ratio (integral or fractional) of switching frequency to fundamental frequency of the inverters and also for any ratio between the two dc source voltage levels of these systems. Phase voltage spectra of open-end winding drives for both continuous and discontinuous schemes of synchronized PWM do not contain even harmonics and sub-harmonics during the whole control range, including the zone of overmodulation which is especially important for the medium and high-power traction systems.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.