Invention Grant
- Patent Title: DC inverter having reduced switching loss and reduced voltage spikes
-
Application No.: US15617239Application Date: 2017-06-08
-
Publication No.: US10011178B1Publication Date: 2018-07-03
- Inventor: Zhuxian Xu , Chingchi Chen
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: FORD GLOBAL TECHNOLOGIES, LLC
- Current Assignee: FORD GLOBAL TECHNOLOGIES, LLC
- Current Assignee Address: US MI Dearborn
- Agency: MacMillan, Sobanski & Todd, LLC
- Agent David B. Kelley
- Main IPC: H02P1/00
- IPC: H02P1/00 ; B60L11/18 ; H02M7/5395 ; H02M1/08 ; B60L11/08 ; H02P27/08 ; H02P9/30 ; H02M1/00

Abstract:
An electrified vehicle propulsion system uses current feedback to modify gate drive signals to suppress voltage spikes and increase switching efficiency. A DC link having a link capacitor and a link inductance is connected to first and second converters. A first converter bridge has a first phase leg with first upper and lower switching devices, each switching device having a respective gate loop. A second converter bridge has a second phase leg with second upper and lower switching devices, each switching device having a respective gate loop. A plurality of gate drivers provide gate drive signals to respective gate loops for turning the respective switching devices on and off. A plurality of gate coils are provided, wherein each gate coil is connected in series between a respective gate driver and a respective gate loop. Each gate coil is respectively inductively coupled to the link inductance.
Information query