针对传统单线圈电磁炉加热过程中锅体温度难以均匀的问题，本文提出一种新型具有不同相位励磁的多线圈感应加热电磁炉，线圈间加载不同相位的电流，利用涡流邻近效应发热对温度的影响来提高锅具表面温度分布的均衡性，并且通过有限元法进行涡流场与温度场的双向耦合仿真。在保证锅具的涡流损耗和加热半径相同的情况下，分析比较了新型多相位多线圈电磁炉和传统单线圈电磁炉锅具表面涡流和温度分布，分析结果表明新型电磁炉能实现更均匀的温度分布，为多相位多线圈电磁炉的设计提供了理论依据。
Abstract
Traditional single coil induction cooker suffers from the problem of uneven temperature distribution. A novel induction cooker with multi-coils and multiphase excitations is proposed. The exciting currents in the multi-coils are with different phases. The temperature distribution on the pan could be more uniform by the thermal impact of the proximity effect losses by the multi-coils. With the same power losses and the same heating area in the pan, the eddy currents and temperature distributions of the two different coil systems are analyzed and compared using the simulation of Finite Element Method. The results show that the proposed multiphase multi-coils scheme can achieve more uniform temperature than that of traditional single coil scheme.
关键词
感应加热 /
电磁炉 /
涡流 /
温度分布
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Key words
induction heating /
induction cooker /
eddy current /
temperature distribution
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参考文献
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