公开(公告)号：US12233723B2

公开(公告)日：2025-02-25

申请号：US18153044

申请日：2023-01-11

Applicant: FORD GLOBAL TECHNOLOGIES, LLC

Inventor： Krishna Prasad Bhat ,  Chingchi Chen ,  Nitin Parsa ,  Varittha Sanphuang ,  Michael W. Degner ,  Hongjie Wu

IPC: B60L50/60 ,  H01M10/42 ,  H02M1/34 ,  H02M7/537

Abstract: An automotive power system includes a traction battery, an electric machine, and one or more power cards each containing at least one power semiconductor switch and at least one Y-snubber that includes a series connected capacitor and resistor. The power semiconductor switches are arranged to form an inverter electrically connected between the traction battery and electric machine. The resistors are tuned to dissipate common mode noise associated with operation of the power semiconductor switches.

公开(公告)号：US11296644B2

公开(公告)日：2022-04-05

申请号：US16747418

申请日：2020-01-20

Applicant: Ford Global Technologies, LLC

Inventor： Xuemei Sun ,  Jiyao Wang ,  Hongjie Wu ,  William Reynolds ,  Silong Li ,  Michael W. Degner

IPC: H02P29/024 ,  H02M7/5387 ,  H02P27/08

Abstract: A vehicle includes a traction battery, an inverter, and a controller. The inverter includes a plurality of pairs of switches. Each of the pairs includes an upper switch that is directly electrically connected with a positive terminal of the traction battery and a lower switch that is directly electrically connected with a negative terminal of the traction battery. The controller, responsive to presence of a fault condition and during each of consecutive switching periods, deactivates all of the switches for a predetermined portion of the switching period, activates only the upper switches for another predetermined portion of the switching period, deactivates all of the switches for yet another predetermined portion of the switching period, and activates only the lower switches for still yet another predetermined portion of the switching period.