感應加熱電路之功率開關對於電路效率影響之探討

The Study of Influence of Power Switches on Circuit Efficiency for Induction Heating

呂學彥(Hsueh-Yen Lu)

指導教授 ： 何金滿

中原大學/工學院/電機工程研究所/碩士(2011年)

https://doi.org/10.6840/cycu201100391

摘要

由於感應加熱相較於傳統直接加熱，具備有加熱速度快、安全性高、產品品質好、幾乎無環境污染等許多優點；另一方面，隨著功率半導體元件製作技術的進步，使轉換器上的功率開關能夠操作在更高頻率的範圍，致使高頻感應加熱裝置具備了輕、薄、短、小、效率高的特色。

本篇論文在於建構一電壓饋入式電源轉換裝置，應用於負載串聯共振式感應加熱系統上。在全橋式電路架構下，藉由相移式脈波寬度調變技術與盲時時間控制方式，致使開關切換之能量獲得適當的轉換。但實質上不同功率開關下，會有不同的成效，且在功率開關上的損失影響了整體轉換器的效率，有鑑於此，本文使用IGBT與MOSFET功率開關兩者分別在不同的頻率下作特性分析與探討。

最後，本研究對感應加熱系統其操作特性與整體效率進行說明與量測，同時對於不同開關的效率做一探討。

關鍵字

功率開關 ； 效率 ； 全橋式電源轉換

並列摘要

Induction heating has the advantages of high efficiency, high quality, and low pollution, and had been used in many applications, especially in the metal treatments.

In this study, a load series resonant induction heating system with voltage source full bridge inverter has been constructed. In the full-bridge circuit architecture, by the phase shift pulse width modulation technology and dead time control, the energy can be converted appropriately. It is essentially that with different power switches, there will be different results. The loss of the power switches has impact on the overall efficiency of the converter. This thesis uses both IGBT and MOSFET power switches to study the efficiencies under different frequencies and loads.

Finally, the control characteristics and whole system efficiency were measured and analyzed on different types of switches.

並列關鍵字

full bridge inverter ； power switches ； efficiency

參考文獻

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