Cooling arrangement in frequency converter

Details Cooling arrangement in frequency converter Cooling arrangement in frequency converter

2006-04-04

2006-04-04

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

C363S141000, C361S678000, C361S695000

Reexamination Certificate

active

07023712

ABSTRACT:
The invention relates to a cooling arrangement in a frequency converter, the arrangement being configured to convey heat generated at the frequency converter to a space surrounding the frequency converter, comprising a power part (10) of the frequency converter, a control part (20) and cooling means, comprising a cooling motor (31) and a transfer means (32) for producing cooling. In accordance with the invention, a cooling frequency converter is arranged in connection with the frequency converter to control the cooling means. The power part of the cooling frequency converter comprises a rectifier (11) of the frequency converter, an intermediate circuit (12) of the frequency converter as well as a unique power unit (43) of the cooling frequency converter. The power unit (43) is arranged between the intermediate circuit (12) and the cooling motor (31) in order to supply power to the cooling motor (31), the cooling frequency converter having a control unit (50) connected to the power unit (43) and controlling the same.

REFERENCES:
patent: 5485350 (1996-01-01), Hecht et al.
patent: 5825642 (1998-10-01), Ishii et al.
patent: 6188189 (2001-02-01), Blake
patent: 6198642 (2001-03-01), Kociecki
patent: 6236184 (2001-05-01), Baker
patent: 6278080 (2001-08-01), Moriguchi et al.
patent: 6867970 (2005-03-01), Muller et al.
patent: 2002/0063476 (2002-05-01), Rolls et al.
patent: A 60-131094 (1985-07-01), None
patent: WO 01/05516 (2001-01-01), None

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