Title :
An improved high power factor and low cost three-phase rectifier
Author :
Mehl, Ewaldo L M ; Barbi, Ivo
Author_Institution :
Dept. of Electr. Eng., Federal Univ. of Parana, Brazil
Abstract :
A new method to improve the power factor of three-phase rectifiers is introduced in this paper. The main features of the proposed circuit are low cost, small size, high efficiency and simplicity. The power factor improvement is achieved with three bidirectional active switches rated at a small fraction of the total processed power, and gated at the line frequency. Principle of operation and design procedure, with practical examples are also presented. The theoretical analysis was validated with experimental results from a laboratory prototype rated at 6.4 kW and connected to the 220 V, 60 Hz AC system. The same circuit was also used in another prototype rated at 12 kW, with similar results
Keywords :
AC-DC power convertors; circuit testing; field effect transistor switches; network analysis; network synthesis; power MOSFET; power factor correction; power field effect transistors; power semiconductor switches; rectifying circuits; switching circuits; 12 kW; 22 V; 6.4 kW; 60 Hz; AC system; bidirectional active switches; circuit design; cost; efficiency; power factor; simplicity; simulation; size; testing; three-phase rectifier; Costs; Diodes; Frequency; Laboratories; Prototypes; Reactive power; Rectifiers; Switches; Switching circuits; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1995. APEC '95. Conference Proceedings 1995., Tenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2482-X
DOI :
10.1109/APEC.1995.469038
