Method for protecting switching elements in an induction heating system
US9596721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2013 |
| Grant date | Mar 14, 2017 |
| Priority date | — |
| Expiry date | Jan 16, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides systems and methods for protecting switching elements in an induction heating system. A switching power loss associated with a switching element of the induction heating system can be calculated and an operating frequency of the induction heating system can be adjusted based upon the switching power loss. According to one aspect, the switching power loss can be classified into one of a plurality of threat zones based upon the magnitude of the switching power loss and the operating frequency can be adjusted based upon the threat zone into which the switching power loss is classified. According to another aspect, the switching power loss can be calculated based at least in part on a duty cycle of an output signal. The duty cycle of the output signal can provide an indication of the proximity of the operating frequency of the induction heating system to resonance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.