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This paper presents discontinuous space vector PWM (DPWM) strategies for a seven-phase voltage source inverter (VSI). Space vector model of a seven-phase VSI shows that there exist 128 space vectors with different lengths and maps into fourteen sided polygons. A number of possibilities could arise to implement modulation of inverter legs due to large number of available space voltage vectors. Two...
This paper presents qualitative and quantitative approach to access the performance focusing upon torque pulsation of an open-loop inverter-fed synchronous reluctance motor (Syn-RM) drive system. The inverter used to supply a three-phase Synchronous Reluctance motor operates in either 180deg or in 150deg conduction mode. A comparison in the performance of the drive system is presented for the two...
An alternative and simple space vector pulse width modulation (SVPWM) scheme for a five-phase voltage source inverter (VSI) is proposed in this paper. The proposed PWM scheme generates the inverter leg switching times, from the sampled reference phase voltage amplitudes and centre the switching times for the middle vectors, in a sampling interval, as in the case of conventional space vector PWM. Similar...
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