Power factor correction and efficiency investigation of AC-DC converters using forced commutation techniques

Author

Georgakas, K. ; Safacas, A.

Author_Institution

Dept. of Electr. & Comput. Eng., Patras Univ., Greece

Volume

2

fYear

2005

fDate

20-23 June 2005

Firstpage

583

Abstract

In this paper the power factor and the efficiency of a suggested AC-DC converter topology is studied via Mathlab/Simulink simulation. This converter topology consists of four MOSFET elements in bridge form and: a) two antiparallel IGBT elements between the bridge and the AC grid, b) one MOSFET element between the bridge and the DC load. These switching elements control the conduction time intervals of the bridge by a hysteresis current controller in order to achieve an AC current waveform in phase with the AC voltage as well as a very low content of higher harmonics. This way the values of the power factor and the efficiency become very high (e.g. 0,98... 0,99).

Keywords

AC-DC power convertors; DC machines; angular velocity control; commutation; electric current control; insulated gate bipolar transistors; power MOSFET; power bipolar transistors; power factor correction; AC-DC converters; MOSFET elements; converter topology; forced commutation techniques; hysteresis current controller; power factor correction; AC-DC power converters; Analog-digital conversion; Bridge circuits; Hysteresis; Insulated gate bipolar transistors; MOSFET circuits; Power factor correction; Reactive power; Topology; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2005. ISIE 2005. Proceedings of the IEEE International Symposium on

Conference_Location

Dubrovnik, Croatia

Print_ISBN

0-7803-8738-4

Type

conf

DOI

10.1109/ISIE.2005.1528982

Filename

1528982