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principle
improvements offered by
SineWave™
The SineWave™ active harmonics
conditioner allows:
current distortion to be reduced and
problems due to harmonics to be
avoided, e.g.:
unintentional tripping of protections
owing to the value of current in the
neutral,
cable heating, notably in the neutral,
heating of generators (transformers,
generator sets, inverters, etc.),
standards on harmonics consumed
on the utility power not being
respected;
operating principle
The current consumed by a non-linear
load (e.g. a computer system) is
composed of a sinusoidal current IF,
which is a fundamental current at the
utility power frequency, and a harmonic
current IH made up of currents having
frequencies that are multiples of the
network frequency.
The SineWave™ conditioner
continuously generates a current equal
to IH so that the utility power current
only has to supply the fundamental
current.
The load + SineWave™ active
harmonics conditioner assembly will
then be seen by the utility power as a
globally linear load which absorbs
sinusoidal current. Thus, the cabling
and generator impedances will not
introduce any voltage distortion.
device functional features
The SineWave™ active harmonics
conditioner allows:
determination of the harmonic orders
to be compensated:
by configuring the breadth of the
spectrum to be compensated (H2 to
H25 max.),
or by concentrating the capacity of
the SineWave™ compensation on
specific harmonic orders during
installation and thus carrying out
selective compensation;
reactive energy compensation to be
carried out so as to increase the load
cosine ϕ and return to the cosine range
applied by the energy utility;
4
voltage distortion to be improved as
well as device operating problems due
to over heavily disturbed supply
voltages;
an installation's characteristics to be
improved so that devices can operate
in conditions specified by the
manufacturer;
0,8
0
-0,8
IF
G
1
0
-1
measurements and other variables
calculated by the device (voltage,
current, distortion rates, etc.) to be
displayed;
optional communication with an
external controller via a J-BUS protocol
RS422/485 link for:
transmitting display information,
receiving RUN and STOP orders.
installation and operation manual of SineWave™: E-51027008XT/AD
reactive energy to be compensated,
when this type of operation is possible,
and the cosine ϕ to be converted to a
value higher than or equal to 0.94 as
recommended by electricity utilities.
2
1
0
-1
-2
IF + IH
IH
SineWave™
The compensation introduced by
SineWave™ in relation to harmonic
and reactive currents is continuously
recalculated;
the SineWave™ active harmonics
conditioner continuously measures
current absorbed by the load and
immediately modifies the current that it
reinjects onto the utility power to match
this value;
the SineWave™ active harmonics
conditioner is suitable for all installation
load and harmonic spectrum variations
thus guaranteeing optimum operation
at any instant.
load
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