Bachmann Monitoring has developed a Condition Monitoring System (CMS) with low electromagnetic interference emissions for the Dutch wind park “De Drentse Monden en Oostermoer” (DMO) which will consists of 44 N131/3900 Nordex turbines . The 171.6MW DMO wind park is located near the central antenna field of the Low-Frequency Array (LOFAR).
This Europe-wide network containing thousands of highly sensitive radio antennas is used by the Netherlands Institute for Radio Astronomy ASTRON to research the universe. To avoid interference with the world’s largest antenna network, electromagnetic emissions from the wind park must be kept to a minimum. To achieve this, Nordex asked Bachmann to reduce the emissions of its CMS, normally operating in the range of 30 MHz to 240 MHz, to a level of at least 35 dB below the quasi-peak value. Emmision values were measured by independent third parties in the test turbine with installed CMS, erected by Nordex last year. ASTRON also confirmed very low electromagnetic emissions from the entire system.