Method for operating an induction hob and induction hob
US11153939B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2019 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Jun 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B2213/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method for operating an induction hob (1), the induction hob (1) comprising a power circuit portion (2) with at least one switching element adapted to provide pulsed electric power to an induction coil (3) and a control entity (4) for controlling operating parameters of the switching element, the method comprising the steps of: performing a control loop with control cycles in order to detect coupling changes between the induction coil (3) and a piece of cookware, said control cycles comprising the steps of: o receiving frequency information (fcurr) and power information (Pcurr) at said control entity (4); o calculating at least one relation coefficient (Ds′, Ds″) based on said frequency information (fcurr) and said power information (Pcurr); and o comparing said relation coefficient (Ds′, Ds″) with a relation coefficient boundary, thereby de-riving a comparison result; deciding, based on the comparison result, whether to: o perform a new control cycle of said control loop or whether to o stop said control loop and said provision of pulsed electric power to the induction coil (3) and re-start said control loop after updating an operating parameter of the s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.