Transient current management of electric machine in an electrified vehicle
US12081152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2022 |
| Grant date | Sep 3, 2024 |
| Priority date | — |
| Expiry date | Apr 21, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60L2210/40
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electrified vehicle includes a traction battery, an inverter coupled to the traction battery via positive and negative legs of a high voltage bus and operable to convert DC power from the traction battery to three-phase AC power, a capacitor connected across the positive and negative legs of the high voltage bus, an electric machine having three phases coupled to the inverter, and a controller programmed to control electric machine voltage toward zero at a first slew rate or control electric machine current to a target short circuit current at a second slew rate in response to an active short request signal and to control the inverter to actively short the three phases of the electric machine after either (a) a specified elapsed time, or (b) after the electric machine voltage is below a first threshold or the current is within a predetermined range of the target short circuit current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.