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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
Filtering Techniques for Power Quality Improvement 38-31
In order to simplify the ltering of the load current i
Lh
, the fundamental component i
Lfa
is transformed
i
nto the dc component. Multiplying both sides of Equation 38.19 by sin θ
s
,
i
i i
i h
L s s
L L
s s Lh s h
θ θ φ θ φ θ θ φ
(
)
=
(
)
+ sin cos cos sin sin
ˆ ˆ
ˆ
1
1
1
1
2 2
2
((
)
=
h 2
(38.23)
is equation shows the presence of a dc component and the ac components of which minimal frequency
is equal to twice the frequency network (120 Hz). A low-pass lter, with a relatively low cut-o frequency is
used to prevent the high-frequency component. However, it is indispensable to respect a good compromise ...
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Publisher Resources

ISBN: 9781439802861