Current programmed transfer function model of Luo Converters for Standalone Photovoltaic System

Abstract

This paper proposes a new transfer function model known as current programmed transfer function model of Luo converter for standalone photovoltaic system. This model eliminates the need of current loop for regulating load current and helps in achieving perfect current sharing in paralleled connected converter modules. Thus the control strategy of paralleled connected Luo converters consists of only one voltage loop. This voltage loop generates a control signal which is influenced by the inaccuracy that occurs in output voltage. The control signal is given as input to current programmed transfer function model of Luo converter. This ensures identical distribution of load current among paralleled connected converters. The proposed system reduces system complexity by eliminating the need of separate current loop. The outcomes of simulations are offered to confirm that the suggested scheme is possible.