Buck-boost converter controlled by hysteretic PWM method with input voltage feedforward

This paper proposed a new control method employing a hysteretic PWM controller with an input voltage feedforward for the boost and buck boost converters without using a current mode control. A triangular and hysteretic window voltages to generate the switching pulse signal are obtained in the comparator circuit by adding two resistors and an RC integral network. The feedforward signal from the input voltage is fed to the comparator circuit through a simple RC differentiator. As a result, the proposed control method provided excellent dynamic performances for the changes of the load current and input voltage.

[1]  T. Nabeshima,et al.  Analysis and design considerations of a buck converter with a hysteretic PWM controller , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[2]  Hirofumi Matsuo,et al.  New solar cell power supply system using a boost type bidirectional DC-DC converter , 1982, 1982 IEEE Power Electronics Specialists conference.

[3]  K. Nishijima,et al.  A novel control method of boost and buck-boost converters with a hysteretic PWM controller , 2005, 2005 European Conference on Power Electronics and Applications.

[4]  Terukazu Sato,et al.  Frequency domain analysis of fixed on-time with bottom detection control for buck converter , 2010, IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society.

[5]  Hirofumi Matsuo,et al.  An excellent operating point tracker of the solar-cell power supply system , 2006, IEEE Transactions on Industrial Electronics.

[6]  Terukazu Sato,et al.  A robust hysteretic PWM control method for switching converters , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[7]  Liuchen Chang,et al.  Research on a novel buck-boost converter for wind turbine systems , 2008, 2008 IEEE International Conference on Sustainable Energy Technologies.

[8]  Nathan O. Sokal,et al.  Near-Optimum Dynamic Regulation of DC-DC Converters Using Feed-Forward of Output Current and Input Voltage with Current-Mode Control , 1986, IEEE Transactions on Power Electronics.

[9]  A. Chih-Chiang Hua,et al.  Design and implementation of power converters for wind energy conversion system , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[10]  Fujio Kurokawa,et al.  New Solar Cell Power Supply System Using a Boost Type Bidirectinal DC-DC Converter , 1984, IEEE Transactions on Industrial Electronics.

[11]  R. Miftakhutdinov,et al.  Analysis and optimization of synchronous buck converter at high slew-rate load current transients , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[12]  G.R. Walker,et al.  Cascaded DC-DC converter connection of photovoltaic modules , 2004, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[13]  F.C. Lee,et al.  Novel hysteretic control method for multiphase voltage regulators , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.

[14]  Jian Sun,et al.  Characterization and performance comparison of ripple-based control methods for voltage regulator modules , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).