Abstract
Conference Title: 2017 IEEE Applied Power Electronics Conference and Exposition (APEC) Conference Start Date: 2017, March 26 Conference End Date: 2017, March 30 Conference Location: Tampa, FL, USA This work investigates the using of high-pass filter (HPF) of the grid current to actively damp the resonance in grid-connected LCL filters. A new form for such HPF is deduced. Using this form, a systematic co-design procedures for the HPF along with the fundamental current regulator are presented to achieve pre-specified behavior. This behavior includes avoiding the non-minimum phase behavior along with achieving pre-specified requirements of fundamental loop gain and crossover frequency. Numerical example along with the experimental work are introduced at different resonant frequencies.