公开(公告)号：US20200044596A1

公开(公告)日：2020-02-06

申请号：US16437043

申请日：2019-06-11

Applicant: Eaton Intelligent Power Limited

Inventor： Huaqiang Li

IPC: H02P29/50 ,  H02P27/08 ,  H02M1/12 ,  H02M1/44 ,  H02M7/5387

Abstract: An active harmonic filter (AHF) and regenerating energy control (REC) apparatus for an adjustable speed drive (ASD) includes an inverter and a controller operatively coupled to the inverter to selectively control operation thereof. The controller is programmed to operate the inverter in different modes in order to manage different conditions that occur during operation of the ASD. In an AHF mode, the controller operates the inverter to filter harmonics present at an input to an ASD. In an REC mode, the controller operates the inverter to control regenerating energy flowing into the inverter from the ASD.