Abstract
This paper proposes a new induction heating (IH) coil using Halbach-arranged coils for cooktop. In general, a control inverter is placed on the back side of the coil, but by using the Halbach array coils, magnetic flux leakage to the back of the coil can be prevented without using a ferrite cores for magnetic shielding. Further, the magnetic flux can be concentratedly linked to the pot. First, differences and advantages of the magnetic flux distribution between the conventional IH-coil and the proposed IH-coil will be described based on electromagnetic field analysis. Next, the results of verification of the effect of the Halbach array coil via the prototype for principle verification are demonstrated.
Highlights
Induction heating technology is widely used in industry, home appliances, and medical applications because of its advantages such as non-contact, safety without using thermal power, rapid heating, and small size [1]
The effect of the Halbach induction heating (IH)-coil was shown by visualizing the magnetic flux vectors by FE-simulation, and the design guideline was explained
The induction heating experiment was demonstrated using prototype, and the efficiency map was compared with the benchmark IH-coil on the market
Summary
Induction heating technology is widely used in industry, home appliances, and medical applications because of its advantages such as non-contact, safety without using thermal power, rapid heating, and small size [1]. These specific studies will be described . For this reason, it is important to design the Halbach IH-coil that can reduce the resistance value of Rcoil while winding a large number of axial coils. Since the size of the Litz wire has a great influence on the heating performance and efficiency, it is necessary to consider optimization in the future
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