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2171 West Park Court, Suite # G, Stone Mountain, GA
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Power Quality
| Active
Front End Converter |
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Power Quality
Improvement & Regenerative Unit
Plants
experience increase and power
pollution day by
day due to the use of non-linear
equipment such
as variable frequency drives,
rectifiers, DC drives,
induction furnaces etc. These
non-linear loads draw
non-sinusoidal current from a
sinusoidal voltage
source, thus creating current
distortion. Current
distortion can result in voltage
distortion and the
spread of power pollution wherever
that voltage
is supplied.
Range: 11KW
to 1000KW
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Effects of power pollution
Mitigation of Harmonics
Wherever there is a 6-pulse
rectifier at the input of variable frequency
drive, UPS or there is
a 6- pulse rectifier supplying the common link
to which number of variable frequency drives
are connected, the input harmonic distortion
of current is 62%. Due to presence of
harmonics
the effective power factor (which is a product
of displacement factor and distortion factor)
is
less (of the order of 0.8). If variable
frequency drives has regenerative load like
centrifuge
or lift lot of power is dissipated in dynamic
braking across the DC link. Active front end
converter (AFC) can take care of these three
problems in totality due to its capacity to
work in four quadrants.
- It reduces the
total harmonic distortion of input current
to less than 5%.
- It can improve the
input power factor up to unity.
- It can feed back
the regenerative power to mains so that
energy can be conserved.
Amtech's Axpert-AFC Active
Front End Converter offers all these
advantages and can
serve many applications such as:
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