A model reference resonant current controller for grid connected voltage source inverter

A resonant current controller for a grid tied inverter connected to the grid through an L filter is presented. The controller allows to arbitrarily assign all the closed loop poles and zeroes of the system. It also allows to achieve the dynamic response of any arbitrary transfer function with relative grade greater or equal than two. A particular assignment of closed loop poles and zeros is proposed, which is used to obtain the response of a second order system without zeroes, for any number of resonances included in the controller.