Tuned band reject powerline EMI filter

This paper presents a novel concept of using frequency selective power line electromagnetic interference (EMI) filtering. The tuned EMI filtering technique has certain advantages over the conventional EMI filtering under specific interference conditions. Powerline EMI filters, in general, exhibit low pass filter characteristics. The tuned band-reject powerline EMI filter is found to offer electromagnetic compatibility (EMC) solution in the situation when a high order of power is coupled at a known frequency into the powerline. For the known interference frequency, the tuned filter is designed to offer a high order of attenuation.