40
MODE OF ACTION
5.2.2
Mode of action sine-wave EMC filter in AIC
The mains current of the choke solution (=>
) hardly differs from the sine-wave
), while the voltage quality "DC link + and - against earth"
is much better with the sine-wave EMC solution. By reducing the switching-frequency
) the DC bus can be connected with unshielded ca-
bles. Earth currents are massively reduced with the sine EMC solution (=>
).
When operating an AIC with sine-wave EMC filter, the DC output can be equipped with
a DC HF filter for interference suppression.
Drive converters connected to the DC bus can be equipped with DC HF filters. As a
consequence, all drives are "HF-technical" decoupled from each other, such as an AC
supply. Interferences between AIC and drive converter are therefore eliminated.
AIC with 7.2 %
U
k
choke filtering
AIC with sine-wave EMC filter
Mains voltage Ph-Ph against earth
Mains voltage Ph-Ph against earth
Phase current
Phase current
Figure 28:
AIC with choke filtering Ph against PE
Figure 29:
AIC with sine-wave EMC filter Ph
against PE
DC link + against earth
DC link + against earth
DC link - against earth
DC link - against earth
Figure 30:
AIC choke filtering UK against PE
Figure 31:
AIC with sine-wave EMC filter UK
against PE
Summary of Contents for COMBILINE Z1I05-1001 Series
Page 2: ......
