Power conversion device
US10122299B2 · kind B2 · utility
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4Claims
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Assignee
Inventors
Key dates
| Filing date | Apr 8, 2015 |
| Grant date | Nov 6, 2018 |
| Priority date | — |
| Expiry date | Apr 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/327
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a power conversion device in the power electronics field. An object of the present invention is to provide a technique of determining whether a switching element operates normally or not from a gate monitor signal of a power conversion device, and predicting a sign of a failure by obtaining the temperature of the switching element from a transient state of the switching voltage of the power conversion circuit as a component of the power conversion device without using a new signal path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.