Invention Reference Number
Induction cooktops are widely used for efficient and safe cooking but are typically limited to ferromagnetic cookware. This technology addresses the challenge of reliably heating non-ferromagnetic cookware, which is prone to inefficiencies caused by cookware misalignment. By analyzing system sensitivity and introducing a control approach, the method ensures consistent power delivery and stable operation. This advancement supports the development of all-metal induction cooktops that expand consumer choice while improving reliability and energy performance.
Description
Traditional induction cooktops operate effectively only with ferromagnetic cookware, leaving non-ferromagnetic options underperforming due to their lower electrical and magnetic properties. When non-ferromagnetic cookware is used, even slight misalignment on the cooktop can cause significant fluctuations in heating efficiency, power transfer, and circuit stability. This technology provides a detailed sensitivity analysis of such misalignment effects and introduces a novel control strategy to regulate cooktop operation. The control system adaptively adjusts operational parameters to maintain efficient energy transfer and stable inverter conditions, regardless of cookware positioning. This allows for consistent heating performance while protecting system components from excessive current, voltage stress, or efficiency loss. By addressing one of the primary barriers to all-metal induction cooking, this solution paves the way for more versatile, consumer-friendly appliances that combine safety, energy efficiency, and broader cookware compatibility.
Benefits
- Expands compatibility to both ferromagnetic and non-ferromagnetic cookware
- Maintains consistent heating performance despite cookware misalignment
- Enhances energy efficiency and operational stability
- Improves appliance durability by reducing stress on system components
- Ensure system safety under off-nominal conditions with cookware misalignment
Applications and Industries
- Residential and commercial kitchen appliances
- Consumer electronics and home appliance manufacturers
- Industrial heating processes requiring flexible cookware/material compatibility
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
