PROJECT TITLE :

A Novel LED Drive System Based on MatrixRectifier - 2016

ABSTRACT:

This paper presents a novel LED drive system based on matrix rectifier. Matrix rectifier is applied to the LED drive system for the primary time on our knowledge. The novel LED drive system is composed of two stages. The first stage is the matrix rectifier, and also the second stage is the multi-port 2-transistor forward converters (TTFC) that share a leg. The area vector modulation strategy of matrix rectifier and therefore the modulation strategy of multi-port TTFC matched with rectifier stage are absolutely studied. In order to take care of the steadiness of output current, current PI closed-loop control is adopted for LED strings. Both simulation and experiment are dispensed to verify the topology and modulation strategy of the proposed LED drive system.