公开(公告)号：EP1540806A4

公开(公告)日：2008-09-03

申请号：EP03771906

申请日：2003-07-25

Applicant: INT RECTIFIER CORP

Inventor： HO EDDY YING-YIN ,  LI YONG PERRY ,  HONDA JUN ,  TAM DAVID ,  TAKAHASHI TOSHIO

IPC: H02M1/08 ,  H02M1/44 ,  H02M5/458 ,  H02P27/06 ,  H03K17/16 ,  H02M7/5387 ,  H02M7/12

CPC classification number: H02M1/44 ,  H02M5/458 ,  H02M2001/0029 ,  H02M2001/123 ,  H03K17/163 ,  H03K17/168

Abstract: A motor drive system (10) control provides global closed loop feedback to cooperatively operate system components to adaptively reduce noise and provide noise cancellation feedback. An active EMI filter (12) reduces differential and common mode noise on an input and provides a noise level indication to a system controller (11). Power switches in both a power converter (14) and power inverter (16) are cooperatively controlled with dynamic dv/dt control to reduce switching noise according to a profile specified by the controller 11). The dv/dt control is provided as an analog signal to a high voltage IC and codified as a pulse width for a level shifting circuit supplying control signals to the high voltage gate drive (18). A noise extraction circuit and technique obtain fast noise sampling to permit noise cancellation and adaptive noise reduction.

公开(公告)号：AU2003256840A1

公开(公告)日：2004-02-16

申请号：AU2003256840

申请日：2003-07-25

Applicant: INT RECTIFIER CORP

Inventor： TAM DAVID ,  TAKAHASHI TOSHIO ,  HO EDDY YING-YIN ,  LI YONG PERRY ,  HONDA JUN

IPC: H02M1/08 ,  H02M1/44 ,  H02M5/458 ,  H02P27/06 ,  H03K17/16 ,  H02M7/5387 ,  H02M7/12

Abstract: A motor drive system control provides global closed loop feedback to cooperatively operate system components to adaptively reduce noise and provide noise cancellation feedback. An active EMI filter reduces differential and common mode noise on an input and provides a noise level indication to a system controller. Power switches in both a power converter and power inverter are cooperatively controlled with dynamic dv/dt control to reduce switching noise according to a profile specified by the controller. The dv/dt control is provided as an analog signal to a high voltage IC and codified as a pulse width for a level shifting circuit supplying control signals to the high voltage gate drive. A noise extraction circuit and technique obtain fast noise sampling to permit noise cancellation and adaptive noise reduction.