The KUPEL (Keimyung University Power Electronics Laboratory) carries out research in mainly three areas that all are closely related to the use of power electronics. We focus on

- Electric Machine Drives
: In many industry area, electric machines are used for factory automation. We are doing research into controls of electric machines such as AC, DC electric machines and SRM, etc. there are several kinds of control method for those electric machines for example, flux weakning control, position/speed sensorless control, direct torque control and etc.

- Renewable Energy System & Grid-Connected System
: In renewable energy system, the power electronics are used both for controlling the renewable source and interfacing with the load which can be grid-connected or working in stand-alone mode. The kind of renewable energy are wind energy, solar energy and fuel cell, etc.
Additionally, increasing efforts have been put into making power electronic systems such as grid-connected system better in terms of reliability in order to achieve high power source availability and also reduce the cost of maintenance. Fault diagnosis and tolerant control techniques are studied for IGBT, current sensor, voltage sensor and DC-link capacitor for the converter.