Title: Method and a control system for starting a motor for driving a compressor
Application Number: 200610159590 Application Date: 2006.09.28
Publication Number: 1941601 Publication Date: 2007.04.04
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H02P1/04;H02P1/16
Applicant(s) Name: Danfoss Compressors GmbH Address:
Inventor(s) Name:
Attorney & Agent: caore tanyou xiang
Abstract:
    A method and a control system for starting a motor (19), in particular a motor (19) for driving a compressor. The rotational speed (24) of the motor (19) is measured and compared to a minimum value. In the case that omega motor (24) is smaller than the minimum value after a predefined time interval has lapsed, the motor (19) is stopped, and the maximum current level to be supplied by the power source (18) is changed, preferably increased, before a new attempt to start the motor (19) is initiated. Preferably, the voltage (22) supplied to an electronic unit (21) is also measured, and in the case that it drops below a minimum voltage level, the motor (19) is stopped, and the maximum current level is changed, preferably decreased, before a new start attempt is initiated. It is possible to adjust the supplied current level in such a way that power is conserved while sufficient lubricated of the moving parts of the compressor is ensured.
Time: 10
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