本文研製一部具有功因校正的交/直流轉換器，採用連續電流控制模式的平均電流法。其中電流估測電路，利用電阻、電感與電容組成，再透過濾波器取得訊號，作為電感電流的回授，而所獲得的訊號可取代霍爾電流偵測元件。在控制方面，分別以類比控制和數位控制方式實現功因校正控制。文中研製250瓦，100kHz切換頻率的交流110伏特/直流400伏特轉換器。實驗結果與理論分析說明本文探討所方法的可行性及正確性。

This thesis studies a power factor correction for an ac/dc converter. The power factor correction circuit uses continuous current control mode and averaging current technique. In addition, a current estimating circuit, which includes a resistance, an inductor, and a capacitor, is used to estimate the current of the inductance for the ac/dc converter. The estimating circuit is used to replace a Hall current sensor. The controller is realized by using an analog circuit and a DSP to obtain the power factor correction. A 250W, 100kHz, ac110V/dc 400V converter has been implemented. Experimental results show the feasibility and correctness of the proposed method.

[1] K. D. Gusseme, W. R. Ryckaert, D. M. V. Sype, J. A. Ghijeslen, J. A. Melkebeek and L. Vandevelde, “A boost PFC converter with programmable harmonic resistance,” IEEE Transactions on Industrial Applications, vol. 43, no. 3, pp. 742-750, May/June 2007.
[2] J. Sun, “Input impedance analysis of single-phase PFC converters,” IEEE Transactions on Power Electronics, vol. 20, no. 2, pp. 308-314, March 2005.
[3] A. Prodic, J. Chen, D. Maksimovic and R. W. Erickson, “Self-tuning digitally controlled low-harmonic rectifier having fast dynamic response,” IEEE Transactions on Power Electronics, vol. 18, no. 1, pp. 420-428, January 2003.
[4] J. Qian, Q. Zhao and F. C. Lee, “Single-stage single-switch power-factor-correction AC/DC converters with DC-bus voltage feedback for universal line applications,” IEEE Transactions on Power Electronics, vol.13, no.6, pp. 1079-1088, November 1998.
[5] H. L. Jou, J. C. Wu, Y. J. Chang and Y. T. Feng, “A novel active power filter for harmonic suppression,” IEEE Transactions on Power delivery, vol. 20, no. 2, pp. 1507-1513, April 2005.
[6] A. Fernandez, J. Sebastian, P. Villegas, M. M. Hernando and D. G. Lamar, “Dynamic limits of a power-factor preregulator,” IEEE Transactions on Industrial Electronics, vol. 52, no. 1, pp. 77-87, February 2005.
[7] S. Basu and M. H. J. Bollen, “A novel common power factor correction scheme for homes and offices,” IEEE Transactions on Power Delivery, vol. 20, no. 3, pp. 2257-2263, July 2005.

[8] T. Yoshida, O. Shiizuka, O. Miyashita and K. Ohniwa, “An improvement technique for the efficiency of high-frequency switch-mode rectifiers,” IEEE Transactions on Power Electronics, vol. 15, no. 6, pp. 1118-1123, November 2000.
[9] J. Qian, and F. C. Y. Lee, “A high-efficiency single-stage single-switch high-power-factor AC/DC converter with universal input,” IEEE Transactions on Power Electronics, vol. 13, pp. 699-705, July 1998.
[10] S. Kim and P. N. Enjeti, “Control of multiple single-phase PFC modules with a single low-cost DSP,” IEEE Transactions on Industry Applications, vol. 39, pp. 1379-1385, September/October 2003.
[11] Y. Ji and F. Wang, “Single-phase diode rectifier with novel passive filter,” IEE Proceedings - Circuits Devices and Systems, vol. 145, no. 4, pp. 254-259, August 1998.
[12] D. F. Weng and S. Yuvarajan, “Constant-switching-frequency AC-DC converter using second-harmonic-injected PWM,” IEEE Transactions Power Electronics, vol. 11, no. 1, pp. 115-121, January 1996.
[13] V. Vlatkovic, D. Borojevic and F. C. Lee, “Input filter design for power factor correction circuits,” IEEE Transactions on Power Electronics, vol. 11 no. 1, pp. 199-205 January 1995.
[14] H. L. Jou, J. C. Wu, Y. J. Chang, Y. T. Feng and W. P. Hsu, “New active power filter and control method,” IEE Proceedings-Electric Power Applications, vol. 152, no. 2, pp. 175-181, March 2005.
[15] E. Figures, J. M. Benavent, G. Garcera and M. Pascual, “A control circuit with load-current injection for single-phase power-factor-correction rectifiers,” IEEE Transactions on Industrial Electronics, vol. 54, no. 3, pp. 1272-1281, June 2007.

[16] D. Giaouris, S. Banerjee, B. Zahawi, and V. Pickert, “Control of fast scale bifurcations in power-factor correction converters,” IEEE Transactions on Circuits and Systems II, vol. 54, no. 9, pp. 805-809, September 2007.
[17] G. Moschopoulos and P. Jain, “Single-phase single-stage power-factor-corrected converter topologies,” IEEE Transactions on Industrial Electronics, vol. 52, no. 1, pp. 23-35, February 2005.
[18] O. Garcia, J. A. Cobos, P. Alou, R. Prieto and J. Uceda, “Single phase power factor correction : A survey,” IEEE Transactions on Power Electronics, vol. 18, no. 3, pp. 749-755, May 2003.
[19] H. C. Chen, “Duty phase control for single-phase boost-type SMR,” IEEE Transactions on Power Electronics, vol. 23, no. 4, pp. 1927-1934, July 2008.
[20] D. M. V. Sype, K. D. Gusseme, A. P. V. Bossche, and J. A. A. Melkebeek, “A sampling algorithm for digitally controlled boost PFC converter,” IEEE Transactions on Power Electronics, vol. 19, no. 3, pp. 649-657, May 2004.
[21] J. L. Lin, J. C. Hsieh and T. H. Tsai, “Dynamics analysis of a single-stage isolated high power factor converter with a magnetic switch,” IEE Proceeding - Electronics Power Application, vol. 152, no. 3, pp. 643-652, May 2005.
[22] L. Huber, L. Gang and M. M. Jovanovic, “Design-oriented analysis and performance evaluation of buck PFC front end, ” IEEE Transactions on Industrial Electronics, vol. 25, no. 1, pp. 85-94, May 2010.
[23] L. Huber, J. Yungtaek and M. M. Jovanovic, “Performance evaluation of bridgeless PFC boost rectifiers, ” IEEE Transactions on Industrial Electronics, vol. 23, no. 3, pp. 1381-1390, May 2008.

[24] J. Ribas, J. M. Alonso, A. J. Calleja, E. L. Corominas, M. R. Secades and J. Cardesin, “Low-cost single-stage electronic ballast based on a self-oscillating resonant inverter integrated with a buck-boost PFC circuit, ” IEEE Transactions on Industrial Electronics, vol. 48, no. 6, pp. 1196-1204, December 2001.
[25] L. B. Tao and L. Y. Shu, “Power-factor correction using cuk converters in discontinuous-capacitor-voltage mode operation, ” IEEE Transactions on Industrial Electronics, vol. 44, no. 5, pp. 648-653, October 1997.
[26] E. H. Ismail, “Bridgeless sepic rectifier with unity power factor and reduced conduction losses, ” IEEE Transactions on Industrial Electronics, vol. 56, no. 4, pp. 1147-1157, April 2009.
[27] M. Chen and J. Sun, “Feedforward current control of boost single-phase PFC converters,” IEEE Transactions on Power Electronics, vol. 21, no. 2, pp. 338-345, March 2006.
[28] M. Chen, A. Mathew and J. Sun, “Nonlinear current control of single-phase PFC converters,” IEEE Transactions on Power Electronics, vol. 22, no. 6, pp. 2187-2194, November 2007.
[29] K. P. Louganski and J. S. Lai, “Current phase lead compensation in single phase PFC boost converters with a reduced switching frequency to line frequency ratio,” IEEE Transactions on Power Electronics, vol. 22, no. 1, pp. 113-119, January 2007.
[30] E. Figueres, J. Benavent, G. Garcera and M. Pascual , “Robust control of power-factor-correction rectifiers with fast dynamic response,” IEEE Transactions on Industrial Electronics, vol. 52, no 1, pp. 66-76, February 2005.
[31] T. Sonoda, R. Ueda and K. Koga, “An AC and DC current sensor of high accuracy,” IEEE Transactions on Industry Application, vol. 28, no. 5, pp. 1087-1094, April 1992.
[32] S. Buso, P. Mattavelli, L. Rossetto and G. Spiazzi, “Simple digital control improving dynamic performance of power factor preregulators,” IEEE Transactions on Power Electronics, vol.13, no. 5, pp. 814-823, September 1998.
[33] D. Y. Qiu, S. C. Yip, H. S. H. Chung and S. Y. R. Hui, “Single current sensor control for single-phase active power factor correction,” IEEE Transactions Power Electronics, vol. 17, no. 5, pp. 623-632, September 2002.
[34] Y. K. Lo, J. Y. Lin and S.Y. Ou, “Switching frequency control for regulated discontinuous-conduction-mode boost rectifiers,” IEEE Transactions on Industrial Electronics, vol.54, no. 2, pp. 760-768, April 2007.
[35] Z. Z. Ye and M. M. Jovanovic, “Implementation and performance evaluation of DSP-based control for constant-frequency discontinuous-conduction-mode boost PFC front end,” IEEE Transactions on Industrial Electronics, vol. 52, no. 1, pp. 98-107, February 2005.
[36] M. Gotfryd, “Output voltage and power limits in boost power factor corrector operating in discontinuous inductor current mode,” IEEE Transactions on Power Electronics, vol. 15, no. 1, pp. 51-57 January 2000.
[37] J. Chen, A. Prodic, R. W. Erickson and D. Maksimovic, “Predictive digital current programmed control,” IEEE Transactions on Power Electronics, vol. 18, no. 1, pp. 411-419, January 2003
[38] P. Athalye, D. Maksimovic, and R. Erickson, “Variable-frequency predictive digital current mode control” IEEE Power Electronics Letters, vol. 2, no. 4, pp.113-116, December 2004.

[39] B. yant, and M. K. Kazimierczuk, “Modeling the closed-current loop of PWM boost DC-DC converters operating in CCM with peak current-mode control, ” IEEE Transactions on Circuits and Systems, vol. 52, no. 11, pp. 2404-2412, November 2005.
[40] W. Zhang, G. Feng, Y. F. Liu and B. Wu, “A digital power factor correction (PFC) control strategy optimized for DSP,” IEEE Transactions on Power Electronics, vol. 19 no. 6, pp. 1474-1485, November 2004.
[41] A. Shukla, A. Ghosh, and A. Joshi, “Improved multilevel hysteresis current regulation and capacitor voltage balancing schemes for flying capacitor multilevel inverter, ” IEEE Transactions on Power Electronics, vol. 23, no. 2, pp. 518-529, March 2008.
[42] E. Dallago, M. Passoni, G. Sassone, and G. Venchi, “Novel current transducer in a single-phase active power factor correction system, ” IEEE Transactions on Industrial Electronics, vol. 15, no. 3, pp. 529-535, May 2000.
[43] Magnetic. Powder Core CH467060.
[44] Spectrum Digital, TMS320F2808 Evaluation Module Technical Reference, 2004.