Title :
A 12kW three-phase modular converter with unity power factor for telecom power supplies
Author :
Kalpana, R. ; Singh, Bhim ; Bhuvaneswari, G.
Author_Institution :
Dept. of Electr. Eng., IIT Delhi, Delhi, India
Abstract :
In this paper, a new 12 kW single stage modular ac-dc converter is presented with unity power factor for telecom power applications. The combination of three single phase modules and a virtual neutral terminal device is a powerful method to design a three-phase modular converter system with power factor correction. It is based on the principle of connecting three single-phase modules in a three-phase group by creating a virtual neutral using a zig-zag transformer. The steady state analysis and design of the modular converter in continuous conduction mode (CCM) is illustrated with a simplified design example. The performance of such a modular converter system is studied and evaluated with extensive MATLAB simulation.
Keywords :
AC-DC power convertors; power factor; power factor correction; telecommunication power supplies; continuous conduction mode; modular ac-dc converter; power 12 kW; steady state analysis; telecom power supplies; three-phase modular converter; unity power factor; virtual neutral terminal device; zig-zag transformer; Converters; Equations; Inductors; Mathematical model; Phase transformers; Telecommunications; Windings; Modular converter; Power Quality improvement; Telecom Power Supply; Unity Power factor; Zig-zag transformer;
Conference_Titel :
Power Electronics (IICPE), 2010 India International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4244-7883-5
DOI :
10.1109/IICPE.2011.5728114