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公开(公告)号：US09838002B2
公开(公告)日：2017-12-05
申请号：US15132490
申请日：2016-04-19
Applicant: Ford Global Technologies, LLC
Inventor： Zhuxian Xu , Chingchi Chen , Xi Lu , Ke Zou
IPC: H03K17/284 , H02M3/158 , H03K17/10 , B60L11/18
CPC classification number: H03K17/107 , B60L11/1816 , H02M1/08 , H02M3/158 , H02M2001/0045 , H02P27/06 , H03K17/042 , H03K17/166 , H03K17/168 , H03K17/284 , Y02T10/7258
Abstract: A vehicle powertrain includes an IGBT and a gate driver. The IGBT is configured to energize an electric machine. The gate driver is configured to apply an off voltage less than a threshold voltage onto a gate of the IGBT while the IGBT is operating in a saturation mode, and in response to expiration of a delay from a transition from saturation to linear mode, apply a voltage pulse above the off voltage to reduce flyback from the electric machine. The gate driver may be configured to, in response to expiration of a delay from a transition from saturation to linear mode, apply a voltage pulse above the off voltage and below the threshold to reduce flyback from the electric machine.
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公开(公告)号：US20170222641A1
公开(公告)日：2017-08-03
申请号：US15010825
申请日：2016-01-29
Applicant: Ford Global Technologies, LLC
Inventor： Ke Zou , Chingchi Chen
CPC classification number: H03K17/168 , B60L15/007 , B60L50/51 , B60L53/22 , B60L2240/529 , B60L2270/145 , H02M1/08 , H02M3/07 , H02M7/217 , H02M7/53875 , H02M2001/0045 , H02M2001/0054 , H02M2001/007 , H02P27/06 , H03K17/567 , Y02T10/644 , Y02T10/645 , Y02T10/7005 , Y02T10/7072 , Y02T10/92 , Y02T90/127 , Y02T90/14
Abstract: An inverter includes an N-channel IGBT, with a freewheeling diode, coupled to a phase of an electric machine, and has a MOSFET coupling a local voltage with a gate of the IGBT and configured to transition from saturation to linear operation as a current flow direction through the diode switches from positive to negative while the IGBT initiates a current through the electric machine.
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