Electric power conversion systems – Cascaded or combined – diverse conversions in which the... – Combined phase and frequency conversion
Reexamination Certificate
2009-03-13
2011-11-22
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Cascaded or combined, diverse conversions in which the...
Combined phase and frequency conversion
C363S044000, C323S206000
Reexamination Certificate
active
08064225
ABSTRACT:
A reactor arrangement for alternating electrical currents includes, for each alternating electrical current, different coils (105, 107, 105a,107a) for positive and negative half-cycles of that alternating electrical current. The negative and positive half-cycles of the alternating electrical current are directed to the different coils with the aid of unidirectional electrical components (106, 108, 106a,108a) such as, for example, diodes. All coils are arranged to magnetize a common magnetic core element (104) in a same direction. Therefore, from the viewpoint of the magnetization of the magnetic core element, the flowing directions of the alternating electrical currents are not significant. Hence, the common-mode inductance of the reactor arrangement has substantially a same value as the differential-mode inductance.
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European Search Report dated Jul. 24, 2008, from corresponding European application.
ABB Oy
Berhane Adolf
Gblende Jeffrey
Young & Thompson
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