Capacitor‐less induction heating system with self‐resonant bifilar coil,International Journal of Circuit Theory and Applications

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Capacitor‐less induction heating system with self‐resonant bifilar coil
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-07-01 , DOI: 10.1002/cta.2830
Pradeep Vishnuram ₁ , Gunabalan Ramachandiran ₁

Affiliation

In this work, a capacitor‐less self‐resonating coil‐based induction heating (IH) system with magnetic resonant coupling has been proposed. In the conventional heating system, the inclusion of additional capacitor for creating the resonance results in poor efficiency of overall system. To overcome this issue, a bifilar coil system is implemented, which leads to series resonance at a particular frequency. The key mechanism is self‐resonance wireless power transfer concept to IH system; hence, no capacitor is needed in the system. The coil has a series association of the coil inductance and capacitance at the resonant operating condition. A mathematical modeling and steady state analysis is performed for the conventional (solenoidal) coil and bifilar coil to estimate the actual value of the capacitance and inductance of the coil. The performance of the bifilar coil system is tested through COMSOL multiphysics simulation tool and parameters like eddy current, magnetic flux, and temperature distribution in the work piece are analyzed. The experimental setup of the bifilar coil‐aided IH system is implemented with PIC16F877A microcontroller, and FLIR thermal imager is used to analyze the temperature distribution on the work piece. The experimental results are compared with the simulation results, and the bifilar coil system provides a promising solution.

中文翻译：

带自谐振双线圈的无电容器感应加热系统

在这项工作中，已经提出了一种具有磁谐振耦合的无电容器自谐振线圈感应加热（IH）系统。在传统的加热系统中，包括用于产生谐振的附加电容器导致整个系统的效率低下。为了克服这个问题，实现了双线线圈系统，该双线线圈系统导致在特定频率下的串联谐振。关键机制是自谐振无线电力向IH系统的传输；因此，系统中不需要电容器。线圈在谐振工作条件下具有线圈电感和电容的串联关系。对常规（电磁线圈）和双线线圈进行数学建模和稳态分析，以估计线圈电容和电感的实际值。通过COMSOL多物理场仿真工具测试了双线线圈系统的性能，并分析了工件中的涡流，磁通量和温度分布等参数。使用PIC16F877A微控制器实现了双线线圈辅助IH系统的实验设置，并使用FLIR热像仪分析了工件上的温度分布。将实验结果与仿真结果进行了比较，双线线圈系统提供了有希望的解决方案。FLIR热像仪用于分析工件上的温度分布。将实验结果与仿真结果进行了比较，双线线圈系统提供了有希望的解决方案。FLIR热像仪用于分析工件上的温度分布。将实验结果与仿真结果进行了比较，双线线圈系统提供了有希望的解决方案。

更新日期：2020-07-01

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