Hi everybody, I've a little but tricky question for a assignment. It's about designing a RLC single tuned harmonic filter to insert in a three-phase circuit at the point of common coupling in order to cut off the harmonics due to the presence of non linear components. The question is: How the designed filters should theorically be connected (star, delta, with or without an earthed neutral) and why? Which are the benefits for that configuration instead of the other ones? Thank you in advance, any suggestion would be helpful.