Optimal Design of Induction Heater considering Magnetic Skin Effect
Byoung-Wook Jo1, Byeong-Chul Lee2, Cheon-Ho Song3, Ki-Chan Kim4
1Byoung-Wook Jo, B.S, Department of Electrical Engineering, Hanbat National University, Daejeon, Korea, East Asian.
2Byeong-Chul Lee, B.S, Department of Electrical Engineering, Hanbat National University, Daejeon, Korea, East Asian.
3Cheon-Ho Song, B.S, Department of Electrical Engineering, Hanbat National University, Daejeon, Korea, East Asian.
4Ki-Chan Kim, B.S, Department of Electrical Engineering, Hanbat National University, Daejeon, Korea, East Asian.
Manuscript received on 10 June 2019 | Revised Manuscript received on 17 June 2019 | Manuscript Published on 22 June 2019 | PP: 717-720 | Volume-8 Issue-8S2 June 2019 | Retrieval Number: H11200688S219/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open-access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Positive temperature coefficient (PTC) heaters are currently used for heating the batteries of electric vehicle(EV)s. However, PTC heaters have a problem of fire safety from mal-function. Induction heater is a good candidate for safety and cost. It is operated in the high frequency range above 20 kHz. The work piece (WP) of the induction heater has a magnetic field concentrated only on the surface due to the magnetic skin effect at high frequency. Skin Effect in WP makes the reluctance of magnetic circuit increase and makes inductance and core loss decrease. In this paper, an optimum design of the induction heater is proposed by finite element method (FEM) simulation. As a result of FEM analysis, the inductance and the core loss of induction heater are the highest as the magnetic material of WP is replaced with the ferrimagnetic materials without being influenced by the magnetic skin effect. As a result of the optimization design and comparison study, the optimization model shows that core loss occurring on the outside WP generates more than the sum of the inner and outer parts of the base model. The inductance increased by 2.18 times and the iron loss by 1.83 times.
Keywords: Core Loss, Ferrimagnetic Material, Inductance, Induction Heater, Magnetic Skin Effect.
Scope of the Article: Composite Materials