諧振轉換器及數位控制功率因數修正器的研製

Design and Implementation of Resonant Converter and Digital-Controlled Power Factor Corrector

黄裕傑(Yu-Chieh Haung)

指導教授 ： 賴炎生

國立臺北科技大學/電資學院/電力電子產業研發碩士專班/碩士(2011年)

https://doi.org/10.6841/NTUT.2011.00600

摘要

本論文旨在研製一具有功率因數修正之LLC諧振轉換器。前級為數位化功率因數修正器，使用平均電流控制法使輸入電流能追隨正弦電流命令及調整輸出端電壓，具有高功率因數、高效率及低諧波失真等優點；後級為LLC諧振轉換器，具有零電壓切換減少電路損失，使用變壓器之漏電感與激磁電感取代諧振電感，節省成本並提高功率密度。
本論文之電路規格，輸入電壓為110V/60Hz，輸出電壓為19.5V，最大輸出功率為180W。利用Matlab Simulink與IsSpice模擬電路動作，並實際製作一以德州儀器公司生產之TMS320 F2812數位信號處理器作為數位化功率因數修正器的處理核心，以及使用意法半導體生產之L6599晶片作為LLC諧振轉換器的處理核心，並將前後級整合以驗證本論文之模擬、實作與理論相符。經實驗結果證實，整體電路滿載效率為86.15%，功率因數可達0.98以上。

關鍵字

功率因數修正器 ； LLC諧振轉換器 ； 數位控制 ； 零電壓切換

並列摘要

The objective of this thesis is to design a resonant converter and digital-controlled power factor corrector. The front-stage is a digital-controlled power factor corrector operating in average current mode. The control method can force the current to follow its reference and regulate the DC-link voltage. The implemented system is with the following advantages: high power factor, high efficiency and low THD. The second-stage is LLC resonant converter with zero voltage switching to increase the efficiency. Using the leakage inductor and magnetizing inductor of transformer to replace the resonant inductor, cost and power density can be further improved.
The specifications of overall circuit include: input voltage=110V/60Hz, output voltage=19.5V/DC, maximum output power=180W. The signal processor, TI TMS320 F2812, is used as the control platform for the power factor corrector. The control chip, ST L6599, is used as the control platform for the LLC resonant converter. Finally, two systems are integrated to verify theoretical analysis, simulation and implementation. Experimental results show that the overall efficiency is 86.15% and power factor is greater than 0.98 under full load conditions.

並列關鍵字

Power Factor Corrector (PFC) ； LLC Resonant Converter ； Digital Control ； Zero Voltage Switching (ZVS)

參考文獻

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