Filters for photovoltaic applications

Paul Boughton
Premo has launched a EMC filter for photovoltaic (PV) installations, FEDC series, which allows EMC standards compliancy for entire PV system, prevent pre-mature panel aging and reduce installation volume.
Installed between the PV inverter and the solar panel, DC filters helps to meet EMC directives in grip-connected installations. FEDC Series have been designed to reduce conducted emissions towards the solar panel, to reduce EMI radiations from the solar panel, allowing a longer solar panel lifetime. All together, this scheme increases installation service life.
These DC filters in PV installations help increase solar panel reliability, increase immunity in the inverter control phase, avoiding any electromagnetic interference missfunction.
Premo, an experienced manufacturer in filtering development for renewable energies applications, today offers this compact solution to solar energy systems builders, the newest FEDC series. By means of using such filters, overall installation volume is reduced, compared to other existing solution, like reactors.
FEDC Series, is available with ratings from 25Adc to 1500Adc, without terminals up to 150 Adc and screw connections up to 1500Adc. Maximum operational voltage is 1200Vdc. Moreover, they are available without filter capacitors to ground. PREMO also designs and manufactures upon request customized filters to meet customer requirements.
Premo FEDC DC EMC filter meets EN60939, UL1283 EMC requirements and RoHS directive. Their main applications are PV installations, and they can also be used in applications where primary energy source is DC, such as fuel cells, batteries, etc.
Premo enhances with this new series its PV and wind application oriented families, such as HCWMGF o FVDT.
Premo EMC has a long experience in the design of filters for solar applications. This filter has been developed considering the specific requirements of this application, like attenuation, volume, weigh, prices, etc. In collaboration with development centres, universities, suppliers and customers, PREMO has added to its designs innovations and new magnetic materials which enable to obtain results to satisfy customer needs.
Premo EMC has fixed and on-site laboratories to carry out the EMC tests in machines or installations of its customers and a solution is given or suggested in order to fulfill a specific EMC standard.
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