Passive Harmonic Filter Design Scheme

In this article, a passive harmonic filter design scheme is proposed for offshore power distribution systems with subsea cables. Such an offshore system requires more reliable harmonic filters due to parallel resonance and the resultant large harmonic distortions in the system caused by subsea cables. The new passive harmonic filter design scheme is easy to achieve and more reliable compared to traditional pas sive harmonic filter design. It also offers a flexible power factor control to the offshore platform with generators. The stability, reliability, and flexibility of the offshore distribu tion system with the proposed filters are significantly improved. To avoid subfilter overloading, detuning capacitors and reactor taps should be provided for each subfilter in case detuning is required in the field.