Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1996-11-14
1998-06-09
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 63, 310 64, 310 52, 310 53, 310 58, 310 59, 310 89, 310 68, 361688, 361690, H02K 1100
Patent
active
057639698
ABSTRACT:
An integrated motor drive system includes a variable speed electric motor, a fan connected to the electric motor to generate an air flow as the motor rotates, and a motor drive connected to the electric motor, the drive including a heat sink disposed between the motor and the drive and having a plurality of asymmetrically spaced apart heat transfer fins transferring heat generated by power components in the drive to the air flow. The fan is connected to a one of either the rotor of the variable speed motor or to an auxiliary fan motor controlled independently of the variable speed motor. A fan shroud on one end of the motor acts as an air duct member adapted for dividing and directing the flow of air from the fan to sets of heat transfer fins on the heat sink. A method of operating the drive integrated type motor system includes generating motor speed command signals in the drive based on inputs from an operator through an operator interaface unit on the drive. The interface includes a display area for indicating motor speed in units of % base speed or actual motor RPM.
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Budzynski Richard J.
Metheny Larry J.
Sudhoff Douglas H.
Thompson Anthony D.
Dougherty Thomas M.
Horn John J.
Hudzinski Michael E.
Miller John M.
Reliance Electric Industrial Company
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