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首页> 外文期刊>Power Electronics, IET >Three-leg inverter configuration for simultaneous dual-frequency induction hardening with independent control
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Three-leg inverter configuration for simultaneous dual-frequency induction hardening with independent control

机译：三脚逆变器配置，用于具有独立控制的同时双频感应淬火

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摘要

Parts of certain objects need hardening. Hardening is a heat treatment process which can be achieved by induction heating. Certain objects like gears require alternating source with two different frequencies. Simultaneous application of dual frequencies is desirable for proper hardening of a gear. This study proposes a three-leg inverter topology with a load resonant circuit which can provide independent and simultaneous control of low-frequency (LF) and high-frequency (HF) currents through the load coil. The load circuit is a combination of two series resonant circuits which operates at the desired LF and HF. Power control is achieved with phase modulation and asymmetric duty cycle control techniques. A 240 W prototype of the proposed dual-frequency inverter is implemented and tested. Experimental results obtained are in good agreement with the simulation results.
机译：某些对象的某些部分需要硬化。硬化是可以通过感应加热实现的热处理工艺。某些物体（例如齿轮）需要使用两个不同频率的交流电源。同时施加双重频率对于齿轮的适当硬化是理想的。这项研究提出了一种具有负载谐振电路的三脚逆变器拓扑结构，该拓扑结构可以提供独立且同时的控制通过负载线圈的低频（LF）和高频（HF）电流的控制。负载电路是在所需的LF和HF下工作的两个串联谐振电路的组合。功率控制通过相位调制和非对称占空比控制技术实现。所提出的双频逆变器的240 W原型已实现并经过测试。实验结果与仿真结果吻合良好。

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