Offshore platforms typically use generators to provide power for each platform or a series ofrnplatforms. Complications can occur when large variable frequency drives (VFD) or DC drives are used forrndown hole or product pumping or drilling applications.rnThis paper will discuss the problems that occurred on one platform located in the North Sea and present thernuse of an active harmonic filter as the solution. The problems included flicker, mechanical resonance, poorrnpower factor, and high harmonic current, as well as reduced production capacity. Data from powerrnanalyzers are presented to define the scope of the problem and the results for the solution. An economicrnevaluation will define the payback due to increased production.
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