Method and system for detecting the cabling errors between a...

Details Method and system for detecting the cabling errors between a... Method and system for detecting the cabling errors between a...

2011-03-08

2011-03-08

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S771000

Reexamination Certificate

active

07902789

ABSTRACT:
A method and a system for controlling an asynchronous electric motor for detecting cabling errors between the electric motor and a motor starter. The electric motor including three windings distributed over three branches in a delta configuration and controlled by the motor starter, which includes power semiconductors directly connected in series within the three branches of the delta configuration of the three windings. In one embodiment, the method includes applying a voltage in a first branch of the delta, priming the semiconductor of the first branch after a priming delay, measuring an electrical current generated within the first branch during the priming, and determining the configuration of the cabling of the first branch according to the measured electrical current.

REFERENCES:
patent: 6038114 (2000-03-01), Johnson
patent: 6304053 (2001-10-01), Johnson
patent: 6426603 (2002-07-01), Johnson
patent: 7196491 (2007-03-01), Mayhew et al.
patent: 7224557 (2007-05-01), Kinsella et al.
patent: WO 2004/114492 (2004-12-01), None

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