ADF Restoring the perfect wave
Restores the perfect wave
Traditionally fixed, electro-mechanical and semicon-
ductor controlled filters and/or compensators have
been used to limit or minimize power quality prob-
lems in the network.
They operate mainly on a fixed or stepped basis
using passive elements. All these solutions suffer
from the same drawbacks – they add losses, are
installation specific and have no ability to adapt to or
follow dynamic load changes.
The Active Dynamic Filter (ADF) eliminates loss
creating behaviors such as harmonics, flicker, voltage
variations, resonances and reactive energy using a
highly dynamic, stepless digitally controlled com-
pensation and filtering approach. By continuously
monitoring the network and injecting exactly the right
amount of compensation current – at exactly the
right time – the most efficient and accurate solution
to any power quality problem can be achieved.
This approach enables the current waveform to be
restored instantaneously, the current consumption to
be lowered and changes in load or installation condi-
tions to be fully compensated at all times.
For modern facilities, where load and network
change constantly, this solution not only represents
an opportunity, but is a necessity.
Comsys ADF Technology helps to save energy and lower costs in industrial applications.ADF is an active solution that instantaneously restores the wave form.
By continuously injecting exactly the right amount of compensation current power quality problems can be avoided.
The principle of the ADF Technology.
ADF P300 automation panel with the SCC2 control computer.
The ADF Family of products is a line of state-of-the-art active filters. They can compensate almost any load or problem by actively following the load, and dynamically generating compensation current. The figure below shows the principle of operation.
By measuring voltage and current at the load, the network conditions are monitored continuously. The control computer calculates the needed compen-sation current, which is generated by the power processor. The power processor can be seen as a very large digital current generator.
Following the load continuously, actively and dynamically is what makes the ADF superior. Even during increased load or changing conditions, the power quality will always be kept at its optimum. Since the ADF is connected in parallel with the load, commissioning and maintenance of the ADF can be performed during normal operation of the facility.The ADF Family will co-exist with, integrate with and build upon existing compensation solutions, no matter their type. The ADF Family of power condi-tioners will protect your investment by building upon the already installed infrastructure and leveraging its function.
Introducing the ADF Technology
The members in the ADF Concept
ADF P100 – wall mounted, cost-efficient and compact
form-factor active filters. Shares all features except
modularity with the ADF P300. Excels in applications
where low installation cost is required and where space
is at a premium. Like the ADF P300, power can be
expanded by adding cabinets. Suitable for harmonics,
dynamic reactive compensation, and load balancing.
ADF P200 – specialized, wide-bandwidth air-cooled
active filter capable of compensation up to the 5 kHz
range and capable of damping resonances. The ability
to actively dampen and suppress resonances is unique
in the industry. The ADF P200 works equally well with
harmonics as with interharmonics. The extremely fast
response time makes the ADF P200 suitable for the
most demanding applications.
ADF P300 – industrial standard cost-efficient modu-
lar active filter. Built from the start with a modular
approach, the ADF P300 will grow with the needs of
reactive to
the customer. When more power is needed, modules
can be added. When even more power is needed,
cabinets can be added. The ADF P300 Family of
filters is suitable for harmonics, dynamic reactive
compensation including inductive generation, load
balancing and flicker compensation up to several
MVA. The operating voltage is either up to 480V, or
up to 690V. The standard ADF P300 is air-cooled.
ADF P300N – 4-wire version, which is capable of
compensating zero-sequence harmonics. All other
features and abilities are identical to the standard
ADF P300.
ADF P300W – water cooled version, which is avail-
able in voltages up to 690V. The water cooled ver-
sion is especially suitable to demanding applications
in harsh environments.
ADF P700 – heavy-duty active filter with integrated
medium voltage connection, available only with water
cooling. The ADF P700 is based on ADF P300W
components, but also includes step-up transform-
ers, air conditioning, heating, and a container-shaped
building. The ADF P700 is a turnkey solution suitable
for heavy-duty industrial applications such as flicker
control in electric arc furnaces.
Flexibility with modules
The ADF System is built up on modules and is easy to expand with more capacity. You can start with one power processor and enlarge with one or two more processors in the same cabinet. For further capacity you can add additional cabinets.
Selecting Comsys as your Power Quality partner means getting access to the most advanced com-pensation technology in the world. The ADF Family can be used for the standard problems of harmonic mitigation, load balancing and dynamic reactive compensation. But the technology is also able to handle resonances, flicker and voltage control, mak-ing the ADF Technology an industry leader.
By combining the ADF Technology with an easy-to-use web interface, accessible from a standard IT network, integrating supervision, control and logging in a single interface, the ADF Technology is not only part of the smart grid, but an important building block.
Industry-leading technology – ready for the smart grid
Power processers
SCC2 Control Computer
Customer Interface
Connection
Easy to expand capacity by adding new processors and cabinets.

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