公开(公告)号：US20200313599A1

公开(公告)日：2020-10-01

申请号：US16308878

申请日：2017-03-06

Applicant: Danfoss A/S

Inventor： Lin Sun ,  HuaiYu Lin

IPC: H02P29/50 ,  F25B31/02 ,  F04B49/20 ,  H02P25/22 ,  H02P27/06

Abstract: Compressors in a refrigerant loop are driven by variable frequency drives. The variable frequency drives are configured to demand current from an alternating current power source at different phases relative to one another such that at least one current harmonic frequency at the alternating current power source is cancelled.

公开(公告)号：US11088651B2

公开(公告)日：2021-08-10

申请号：US16308878

申请日：2017-03-06

Applicant: Danfoss A/S

Inventor： Lin Sun ,  HuaiYu Lin

IPC: F25B49/02 ,  H02P29/50 ,  F04B49/20 ,  F25B31/02 ,  H02P25/22 ,  H02P27/06 ,  F25B1/10

Abstract: Compressors in a refrigerant loop are driven by variable frequency drives. The variable frequency drives are configured to demand current from an alternating current power source at different phases relative to one another such that at least one current harmonic frequency at the alternating current power source is cancelled.