Power conversion device with gate drive circuit
US10230294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2015 |
| Grant date | Mar 12, 2019 |
| Priority date | — |
| Expiry date | May 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0081
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power conversion device includes a gate voltage adjustment unit (a detection circuit 12) which acts on a drive signal from a gate drive circuit 11 that sends a drive signal to the respective gates of a plurality of semiconductor elements Q1 to Q2 provided in parallel, and which adjusts the gate voltages of the semiconductor elements. The gate voltage adjustment unit superimposes an induction voltage generated on the basis of a difference between a magnetic flux due to a current flowing through one of the plurality of semiconductor elements and a magnetic flux due to a current flowing through each of the other semiconductor elements, onto a gate voltage sent to at least one gate of the plurality of semiconductor elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.