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Active filter partnership maintains power quality with rapid response times

CP Automation : 20 August, 2013  (Company News)
CP Automation has formed a new joint venture project with Swedish active filter manufacturer Comsys AB. The new venture allows CP Automation to supply both passive and active harmonic filters.
Active filter partnership maintains power quality with rapid response times
Conventional techniques for dealing with power quality problems use fixed filter banks configured to match a specific installation. At best these solutions only compensate for 60-80% of the losses due to their relatively slow response times. With the introduction of active conditioners, such as ADF, response times are brought down to microseconds. 
Comsys AB’s products eliminate operational disturbances and promote efficient energy usage. The business is built around on-site measurements and power quality analysis based on ADF active filter core technology to optimise electrical equipment operation and minimise disturbances. 
Comsys provides ADF for OEM use, helping manufacturers of industrial equipment to cut power consumption and guarantee that the products will not disturb nearby equipment, complying with set standards including IEEE519, G5/4 and EN61000-2-2.
“Our biggest market today is the provision of frequency converters to handle the problems that variable frequency drives create,” said Rickard Jacobson, account manager at Comsys AB. “Benefits include a reduction in production downtime, reduced overheating in attached equipment and energy savings from decreased electrical losses."
“Comsys is going to supply seven ADF P300 units for the new MAX IV science lab in Lund, Sweden. The installation is under construction and, when complete, it will be one of the most advanced facilities in the world, rivalling CERN for investigating new materials by using beamlines,” concluded Jacobson. 
The ADF P300 is an advanced, computer-controlled current generator connected in parallel with the load requiring compensation. The flow of electrical current between the load and the network is measured and analysed to determine losses such as reactive displacement and/or the presence of harmonics.
Whenever necessary, ADF injects opposite phase current to cancel out harmonics and/or reactive displacement, correcting electrical behaviour. The resulting energy profile appears ideal to the rest of the grid network. 
ADF functionality is achieved by using state-of-the-art signal processing and advanced control structures to direct the power flow to and from the machine. Energy can be temporarily stored in the ADF making it possible to also deliver energy back to the grid.
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