Induction heating device having improved switch stress reduction structure
US11304267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2019 |
| Grant date | Apr 12, 2022 |
| Priority date | — |
| Expiry date | May 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/1209
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction heating device includes first and second working coils connected electrically in parallel, an inverter unit configured to switch at least one of the first working coil or the second working coil, an inverter driving unit connected to the inverter unit; a first semiconductor switch connected to the first working coil, a first semiconductor switch driving unit connected to the first semiconductor switch, an over-current protection unit connected to the first semiconductor switch, configured to generate information based on a current that flows in the first semiconductor switch, and configured to, based on the information, determine whether to turn off the inverter driving unit, and a control unit that is configured to receive the information, and determine, based on the information, whether to block a pulse signal to the inverter driving unit and whether to turn off the first semiconductor switch driving unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.