應用於感應加熱的負載並聯共振電流型 反流器設計與研製

Design and Implementation of Current-Fed Load Parallel Resonant Inverter for Induction Heating System

蘇卓盛(Cho-Sheng Su)

指導教授 ： 何金滿

中原大學/工學院/電機工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300132

摘要

隨著我國高科技之發展，對於產品品質之要求日趨嚴謹，因此各種不同之加熱程序被廣泛的使用，尤其是以金屬加工、半導體工業、焊接等工業，其需求與日俱增。比較各種加熱技術，其中以能達到加熱迅速、加熱精確、能量集中、低污染之感應加熱最受歡迎。
大部分感應加熱器的設計，係採取電壓型串聯共振的方式，因此部件的電壓應力相對較大，並且無法在無載下或短路操作，有鑑於此，所以本研究是採取電流型並聯共振的方式來做研究。因為加工物件在加熱過程中，其本身的電氣特性會隨之而改變，致使共振頻率亦隨著加熱時溫度之變化而變動。所以利用相鎖迴路控制技術，讓驅動頻率追隨共振頻率，促使系統的效率在運轉期間，隨時保持於最佳狀態。同時，藉由使用脈波寬度調變控制技術，來改變輸出電壓的工作週期，以達到能夠調整輸出功率。
最後，將所製作的高頻感應加熱器操作在不同頻率下，進行實際的量測及探討。

關鍵字

感應加熱

並列摘要

With the advance of high technology, it is more conscientious about product quality. Therefore, many kinds of heating procedures are used extensively and frequently by metalworking industry, semiconductor industry, and welding industry. Among those heating methods, induction heating is the most popular because it has many merits, such as fast and precise heating, energy concentrating, and low pollution.

Most designs of induction heating machines adopt voltage-fed load series resonant inverter method which has higher voltage stress on devices, and should avoid no load or short circuit conditions. In this regard, this research adopts current-fed load parallel resonant inverter method. In induction heating processing because the electrical characteristics of the workpiece will change in the process of induction heating, the circuit resonant frequency must be changed in accordance. Hence, the Phase-Lock Loop control technique is used for tracking the resonant frequency to keep the system operating at the optimal condition. At the same time, the PWM technique is used to regulate the output voltage.

Finally, this implemented high frequency induction heating system is tested under different frequencies for analyzing.

並列關鍵字

Induction Heating

參考文獻

[41]許國展，“應用於感應加熱的負載串聯共振電壓型反流器設計與研製” ，私立中原大學碩士論文， 民國九十一年。

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