Patent ID: 11881801
Assignee: REGAL BELOIT AMERICA, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A system for controlling a capacity of a compressor, the system comprising:
a motor of a compressor including a main winding connected at a connection point to a start winding;
a drive configured to control a speed of the motor;
a first switch configured to selectively couple the main winding to either (a) a first line voltage or (b) a first output of the drive;
a second switch configured to selectively connect the connection point to either (a) a second line voltage or (b) a second output of the drive;
a third switch configured to selectively connect the start winding to either (a) a capacitor or (b) a third output of the drive; and
a control module configured to control the drive, the first switch, the second switch, and the third switch by:
in response to receiving a demand in a first state:
switching the first switch to connect the main winding to the first output of the drive;
switching the second switch to connect the connection point to the second output of the drive; and
switching the third switch to connect the start winding to the third output of the drive;
in response to receiving the demand in a second state:
switching the first switch to connect the main winding to the first line voltage;
switching the second switch to connect the connection point to the second line voltage; and
switching the third switch to connect the start winding to the capacitor.