Method and system for diagnosing abnormality of power device drive in inverter device
US12316209B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2021 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Sep 19, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is an inverter device that detects abnormalities of a power device of the inverter device, and of a gate drive to be able to safely control the inverter device. The inverter device includes a gate voltage detection unit 19 that detects a gate voltage of the power device, and a drain voltage detection unit 30 that detects a drain voltage. A microcontroller 10 compares a gate drive signal 40 with a gate voltage detection signal 41 to make a diagnosis and compares the gate drive signal 40 with a drain voltage detection signal 42 to make a diagnosis, thereby making a diagnosis and detection of the gate voltage on normal. In addition, by generating a gate drive signal to the power device, from a gate voltage detection signal from a counter power device, a dead time is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.