Patent ID: 7439702
Filing Date: 2008-10-21
Classification: F25B,H02K,H02P,Y02B

Abstract:
1. A chiller system comprising: a compressor, a condenser and an evaporator connected in a closed refrigerant loop; a switched reluctance motor connected to the compressor to power the compressor, the switched reluctance motor including a rotor portion, a stator portion and an air gap between the rotor portion and the stator portion, and the rotor portion including a first end and a second end; a variable speed drive electrically connected to the switched reluctance motor, the variable speed drive being configured to receive an input AC power at a fixed input AC voltage and a fixed input frequency and to provide an output power at a variable voltage and variable frequency to the switched reluctance motor; a cooling system to cool the motor, the motor cooling system being disposed adjacent the stator portion of the switched reluctance motor; and a pair of barrier portions disposed at the first and second ends of the rotor to restrict turbulent fluid flow through the air gap of the switched reluctance motor.