Power conversion device
US10840800B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2017 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Jul 24, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/56
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Circuit configurations become complicate as a power circuit is expanded, and switching elements are necessarily controlled using invert circuits even when an inverter operates normally. A drive circuit 911 monitors soundness of a gate power circuit 10. When a voltage value P3 is less than a predetermined threshold, the drive circuit determines that a failure occurs in the gate power circuit 10, and outputs a signal P4 to a controller 6. After receiving the signal P4, the controller 6 outputs a signal to a signal line S1 to operate a photovoltaic coupler of a power supply circuit 92. Then, the MOS transistor T1 in the battery circuit 93 enters a conduction state. The charges accumulated in the capacitor C1 are immediately accumulated to the gate electrode of the switching element 81 to turn on the switching element 81. In addition, the charges discharged from the capacitor C1 are charged from the photovoltaic coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.