Patent ID: 8872465
Filing Date: 2014-10-28
Classification: H02K,H02P,Y10T

Abstract:
1. A line-start synchronous motor comprising; a stator; end caps on axially opposite ends of the stator forming an exterior of the motor; a rotor core disposed within the stator; a rotor shaft of the motor extending from the rotor core; an output shaft of the motor; and a soft-start element operatively coupling the output shaft and the rotor shaft, the soft-start element being configurable to enable the synchronous motor to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor were the motor otherwise operatively connected to the load in the absence of the soft-start element; wherein the synchronous motor is sufficiently rated to obtain synchronous operation and to drive, at least near synchronous speed during normal steady state operation of the motor, a load having characteristics sufficient to prevent obtaining normal synchronous operation of the motor were the motor otherwise operatively connected to the load in the absence of the soft-start element; and wherein the soft-start element comprises: