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Power Electronics and Motor Drives
book

Power Electronics and Motor Drives

by Bogdan M. Wilamowski, J. David Irwin
October 2018
Intermediate to advanced content levelIntermediate to advanced
1015 pages
40h 24m
English
CRC Press
Content preview from Power Electronics and Motor Drives
DC–AC Converters 14-41
Another dierence with traditional carrier-based PWM is that there is no linearity between the
modulation index and the amplitude of the fundamental component i
1
. is is due the fact that the
central segment of π/3 is not modulated, being always in “on” state, thereby forcing a high amplitude
for the fundamental frequency component. In fact, when changing the modulation index through all
its range (from 0 to 1), the peak amplitude for the current fundamental component varies only within
0.9314I
dc
î
1
1.0465I
dc
. is is no problem, since the current amplitude is controlled by the CSR.
0
0.1
0.2
0.3
0.4
0.5
0 5 10
Harmoinc amplitude ...
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Publisher Resources

ISBN: 9781439802861