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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
Control of Converter-Fed Induction Motor Drives 21-31
21.7.3.2 Modied ST-DTC
Many
m
odications
o
f
t
he
b
asic
S
T-DTC
s
cheme
a
imed
a
t
i
mproving
s
tarting,
o
verload
c
onditions,
v
ery-low-speed
o
peration,
to
rque
r
ipple
r
eduction,
v
ariable
s
witching
f
requency
f
unctioning,
a
nd
n
oise-
level attenuation have been proposed during the last decade.
During
s
tarting
a
nd
v
ery-low-speed
o
peration,
t
he
b
asic
S
T-DTC
s
cheme
s
elects
m
any
t
imes
t
he
z
ero
voltage vectors resulting in ux-level reduction, owing to the stator resistance drop. is drawback can
b
e avoided by using either a dither signal or a modied switching table [4,26].
Torque ripple reduction can be
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Publisher Resources

ISBN: 9781439802861