Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
Title Study on Finite State Machine Modeling of Trajectory Control Algorithm for Soft-Switching Grid-tied Inverter
Authors 백승훈(Seunghun Baek)
DOI https://doi.org/10.5370/KIEE.2021.70.7.1008
Page pp.1008-1015
ISSN 1975-8359
Keywords Grid-tied inverter; Zero-voltage switching; Trajectory control
Abstract This paper present a finite state machine (FSM) model of a trajectory control algorithm for single-stage soft-switching grid-tied inverters with a fast dynamic response. A Grid-tied inverter for single photovoltaic (PV) panel that interfaces distributed energy sources and grid is targeted as an application in this paper. The single-stage soft-switching operation is implemented to reduce switching losses using a resonance filter between two switching bridges. The proposed FSM model effectively selects the switching state of a converter in complex DC / AC bidirectional operations with active/reactive power control. The control scheme directly limits the amount of energy in the resonant circuit and provides a fast transient response with minimal switching actions in all quadrants on ??? ??? plane. The proposed model is digitally implemented on a TI digital signal processor and verified by Hardware-In-the-Loop (HIL) tests.