High frequency power transmission by lumped constant circuit replaced distributed constant line

15th Annual Conference of IEEE Industrial Electronics Society Pub Date : 1989-11-06 DOI:10.1109/IECON.1989.69615

T. Kawahara, T. Shimizu, M. Shioya, G. Kimura

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引用次数: 5

Abstract

In a high-frequency induction heating system with a operating frequency ranged over megahertz, the wiring between the voltage-fed-type inverter and a parallel LC resonant load circuit causes the deterioration of the electric power transmission characteristics. To solve this problem, the authors have developed a power transmission method using the distributed constant line (DCL) with 1/4 length of the wavelength determined by LC resonant frequency. The line is connected between the voltage-fed-type inverter and a parallel LC resonant load circuit. However, when the load is placed near the inverter set, this method is not as cost-effective because of the high expense and long length of the DCL. The authors studied a novel method with the LC lumped constant circuit replacing the DCL for transmission of high-frequency electric power ranged over megahertz. Experimental results indicate that the waveform of the inverter output current is approximately sinusoidal with a small amount of high harmonics, which is smaller than the result obtained with the DCL.<>

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用集总常数电路代替分布常数线路进行高频输电

在工作频率超过兆赫兹的高频感应加热系统中，电压馈电式逆变器与并联LC谐振负载电路之间的接线会导致电力传输特性的恶化。为了解决这一问题，作者开发了一种利用由LC谐振频率决定的波长长度为1/4的分布式常数线(DCL)的输电方法。该线路连接在电压馈电型逆变器和并联LC谐振负载电路之间。然而，当负载放置在逆变器组附近时，由于DCL的高费用和长长度，这种方法不具有成本效益。研究了用LC集总常数电路代替DCL传输兆赫以上高频电力的新方法。实验结果表明，逆变器输出电流的波形近似为正弦波形，其中含有少量的高次谐波，比用DCL得到的结果要小。

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15th Annual Conference of IEEE Industrial Electronics Society

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