公开(公告)号：US11530856B2

公开(公告)日：2022-12-20

申请号：US16222559

申请日：2018-12-17

Applicant: TRANE INTERNATIONAL INC.

Inventor： Seth M. McGill ,  Aaron Salesman ,  Christopher Espelien ,  Josef L. Schmidt

IPC: F25B31/00 ,  F25B43/02 ,  H02P29/62 ,  H02P27/08

Abstract: This disclosure is directed to systems and methods for controlling compressor motors, particularly varying the operation parameters of the motor to provide heat to a lubricant of the motor. The operation parameters include one or more of a pulse width modulation switching frequency, a pulse width modulation frequency switching pattern, or a torque/amp ratio of a drive of the compressor. The efficiency of the motor may be reduced to provide heat, with the heat improving lubricant quality and drive efficiency, to increase an overall efficiency of compressor operations. Methods may include determining a lubricant quality, and determining operational parameters that improve lubricant quality.