Do All Portable Induction Cooktops Have Bad Temperature Regulation?

Proper temperature regulation is crucial for every cook, whether in a professional kitchen or a home kitchen. However, not all portable induction cooktops are created equal in terms of this feature. While some lower-end models may struggle with precise temperature control, many mid-range and high-end portable induction cooktops offer excellent temperature regulation.

Factors to Consider for Temperature Regulation in Portable Induction Cooktops

Quality of the Cooktop: Higher-quality models typically have better temperature sensors and more precise control mechanisms. Power Settings: Many induction cooktops offer multiple power levels, allowing for more precise temperature adjustments. Size and Design: The size of the cooktop and the design of the induction coils can affect how evenly heat is distributed and maintained. User Experience: Some users may find that the rapid heating and cooling of induction cooking requires a learning curve, affecting their perception of temperature regulation. Researching specific brands and models can help identify those known for good temperature control.

When purchasing a portable induction cooktop, it is essential to consider these factors to find a model that meets your needs for temperature regulation. In-store testing and reading reviews can be invaluable tools in this process.

A Case Study: The Nuwave Titanium Model

The 1800 watt ‘Titanium’ model by Nuwave in the U.S.A. is a notable example of a portable induction cooktop that offers good temperature regulation. It can achieve temperatures ranging from barely warm to sub-siummer to gentle simmer, allowing for the preparation of various dishes, including overnight bone broth. The key to its success is using a good, heavy-grade cookware, such as Demeyere Atlantis.

Although the displayed digital temperature may not be entirely accurate, the temperature is generally stable. This model has a 5-degree F incremental temperature setting, making it versatile and user-friendly. Other models, such as those by Nuwave’s ‘Double’ model, also offer this feature and are good alternatives if you're looking for a reliable portable induction cooktop.

The Science Behind Temperature Regulation in Portable Induction Cooktops

The temperature sensor is located in the middle of the ring, in close thermal contact with the bottom of the glass top plate. However, stone, which glass primarily consists of, is not an excellent thermal conductor, introducing a delay into the control loop. This delay results in overshoot and undershoot on the temperature set.

The controller used in these cooktops is often a simple hysteresis controller, not a proportional plus derivative control. This means that even if a probe were available to sense the food directly, the delay introduced by the glass and the pan would still be a significant factor.

These cooktops are built to a price point and are often available for less than twenty pounds sterling. Despite this, they DO have temperature control—unlike the vast majority of cooktops/hobs available in the market.