Design and Implementation of Resonant Converter and Digital-Controlled Power Factor Corrector
| Autor: | Yu-Chieh Haung, 黄裕傑 |
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| Rok vydání: | 2011 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 99 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. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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