An AC/DC power system consisting of a diode rectifier and an auxiliary three-level converter

Author

Hou, Chung-Chuan

Author_Institution

Chung Hua Univ., Hsinchu, Taiwan

fYear

2011

fDate

May 30 2011-June 3 2011

Firstpage

2087

Lastpage

2091

Abstract

This study proposed an AC/DC power system consisting a diode rectifier and an auxiliary three-level converter. The diode rectifier load system is powered by AC grid and distributed generators (DGs) such as photovoltaic cells and micro turbines. The auxiliary three-level converter operates as an active filter when the load system does not get enough power from DGs. When the load system get excessive energy from DGs, the auxiliary three-level converter can transfer the energy back to the AC grid. If the AC grid is in an abnormal condition, the AC/DC power system is disconnected by switch and the DC load is powered by the DGs. Once the AC grid recovers, the AC/DC power system is reconnected by switch and the DC load is powered by AC grid and DGs. Simulation and test results are presented to validate the performances of the proposed AC/DC power system.

Keywords

AC-DC power convertors; active filters; distributed power generation; power filters; power grids; power systems; rectifying circuits; AC grid; AC-DC power system; DC load; DG; active filter; auxiliary three-level converter; diode rectifier; distributed generator; microturbines; photovoltaic cell; Power harmonic filters; Simulation; Space vector pulse width modulation; Switches; Voltage control; active filter; auxiliary three-level converter; regeneration;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Conference_Location

Jeju

ISSN

2150-6078

Print_ISBN

978-1-61284-958-4

Electronic_ISBN

2150-6078

Type

conf

DOI

10.1109/ICPE.2011.5944523

Filename

5944523