Resonant Current Controller With Enhanced Transient Response for Grid-Tied Inverters

SEBASTIÁN GÓMEZ JORGE; JORGE SOLSONA; CLAUDIO A. BUSADA

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Año: 2018 vol. 65 p. 2935 - 2944

0278-0046

This paper highlights the limitations of the dynamic response of a grid-tied inverter connected through an inductor L when it is controlled using a proportional+resonant controller. Then, a new resonant current controller structure is proposed. This structure can be used to control the current injected by a grid-tied inverter through an L filter. When compared to the classic design, the proposed controller has better transient response, both to current reference and grid voltage changes. This is verified through simulation and experimental results.