Recent Projects

An Improved Beatless Control Method of AC Drives for Railway Traction Converters


The traction converter consists of a single phase AC-DC rectifier and a three-phase DC-AC inverter. Due to special structural characteristics of single phase rectifier, a fluctuating voltage component with the frequency twice of the grid’s, exists in DC-link voltage. Fed by fluctuating DC-link voltage, a beat phenomenon occurs…

Integrated Photovoltaic and Dynamic Voltage Restorer System Configuration


This paper presents a new system structure for integrating a grid-connected photovoltaic (PV) system together with a self-supported dynamic voltage restorer (DVR).


The proposed system termed as a “six-port converter,” consists of nine semiconductor switches in total. The proposed configuration retains all the essential features of normal PV and…