Active discharge of an electric drive system
US12323052B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Jan 13, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33573
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, devices, and methods for active discharge of an electric drive system for a vehicle includes an inverter having at least one phase leg, wherein a first of the phase legs includes a first power switch, a dc/dc converter configured to generate an internal supply voltage that is regulated with respect to a voltage on a rail, and a gate drive channel configured to drive the first power switch into conductance by applying a relatively high voltage difference during operation of the vehicle and to continue the driving of the first power switch with a relatively lower voltage difference after a signal indicating shut-down or fault. The dc/dc converter is configured to generate the internal supply voltage to have either a relatively high voltage difference with respect to the voltage on the rail or a relatively lower voltage difference with respect to the voltage on the rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.