Active discharge of an electric drive system
US12227086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2022 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Jan 30, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5387
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
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; an internal voltage supply configured to generate an internal supply voltage regulated with respect to a voltage on a rail and a second voltage, wherein the internal voltage supply is configured to reduce a voltage difference between the internal supply voltage and the second voltage in response to a signal indicating a shut-down or a fault; and a gate drive channel configured to drive the first power switch into conductance by applying the voltage difference between the internal supply voltage and the second voltage between a control terminal and a main terminal of the power switch, gate drive channel configured to continue the driving of the first power switch for a time duration after the signal indicating the shut-down or the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.