Adaptive Current-Mode Control of a High Step-Up DC–DC Converter

A new adaptive current-mode control of a high step-up dc–dc converter is presented. The converter gives a very high voltage gain without using a transformer and maintains low voltage stress across the power devices. The adaptive controller is formed by combining the existing current-mode control law and an adaptive law that generates the inverse of the load resistance. The structure of the proposed adaptive law is such that the derivative of the estimate is both optimized and bounded. To facilitate the controller design, the derived averaged state-space model of the converter with parasitic elements is used. An approximate stability analysis is carried out to gain some insight into the behavior of the adaptive-controlled system. Some experimental results comparing the performance of the proposed adaptive current-mode controller with that of the existing current-mode controller are also presented.

[1]  Siew-Chong Tan,et al.  Indirect Sliding Mode Control of Power Converters Via Double Integral Sliding Surface , 2008, IEEE Transactions on Power Electronics.

[2]  J.M. Ramirez,et al.  Novel DC-DC Multilevel Boost Converter , 2008, 2008 IEEE Power Electronics Specialists Conference.

[3]  Wu Gan.  Non-isolated High Step-up DC-DC Converters Adopting Switched-capacitor Cell , 2015 .

[4]  Adrian Ioinovici,et al.  Ultra-Large Gain Step-Up Switched-Capacitor DC-DC Converter With Coupled Inductor for Alternative Sources of Energy , 2012, IEEE Transactions on Circuits and Systems I: Regular Papers.

[5]  Wuhua Li,et al.  Review of Nonisolated High-Step-Up DC/DC Converters in Photovoltaic Grid-Connected Applications , 2011, IEEE Transactions on Industrial Electronics.

[6]  Petros A. Ioannou,et al.  Robust Adaptive Control , 2012 .

[7]  Xinbo Ruan,et al.  Nonisolated High Step-Up DC–DC Converters Adopting Switched-Capacitor Cell , 2015, IEEE Transactions on Industrial Electronics.

[8]  Chok-You Chan,et al.  A Nonlinear Control for DC–DC Power Converters , 2007, IEEE Transactions on Power Electronics.

[9]  Gerardo Espinosa-Pérez,et al.  Stability of current-mode control for DC-DC power converters , 2002, Syst. Control. Lett..

[10]  Fanghong Guo,et al.  Distributed Secondary Voltage and Frequency Restoration Control of Droop-Controlled Inverter-Based Microgrids , 2015, IEEE Transactions on Industrial Electronics.

[11]  Siew-Chong Tan,et al.  Constant-frequency reduced-state sliding mode current controller for Ćuk converters , 2008 .

[12]  Satyajit Hemant Chincholkar,et al.  Investigation of current-mode controlled cascade boost converter systems: dynamics and stability issues , 2016 .

[13]  Esam H. Ismail,et al.  Ultra Step-Up DC–DC Converter With Reduced Switch Stress , 2010 .

[14]  Jesus Leyva-Ramos,et al.  Modelling and analysis of switch-mode cascade converters with a single active switch , 2008 .

[15]  C. K. Michael Tse,et al.  A unified approach to the design of PWM-based sliding-mode voltage controllers for basic DC-DC converters in continuous conduction mode , 2006, IEEE Transactions on Circuits and Systems I: Regular Papers.

[16]  Chok You Chan.  Comparative study of current-mode controllers for a high-order boost dc-dc converter , 2014 .

[17]  Wei Qiao,et al.  A single-switch LCL-resonant isolated DC-DC converter , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[18]  Esam H. Ismail,et al.  High voltage step-up integrated double Boost–Sepic DC–DC converter for fuel-cell and photovoltaic applications , 2015 .

[19]  R. Gules,et al.  Voltage Multiplier Cells Applied to Non-Isolated DC–DC Converters , 2008, IEEE Transactions on Power Electronics.

[20]  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).

[21]  G. García,et al.  Robust Sliding-Mode Control Design for a Voltage Regulated Quadratic Boost Converter , 2015, IEEE Transactions on Power Electronics.

[22]  R. Gules,et al.  Reduced-Order Model and Control Approach for the Boost Converter With a Voltage Multiplier Cell , 2013, IEEE Transactions on Power Electronics.

[23]  Ilse Cervantes,et al.  Linear multiloop control of quasi-resonant converters , 2003 .

[24]  Luis Martinez-Salamero,et al.  Efficiency analysis of a sliding-mode controlled quadratic boost converter , 2013 .

[25]  Katsuhiko Ogata,et al.  Modern control engineering (3rd ed.) , 1996 .

[26]  Adrian Ioinovici,et al.  Switched-Capacitor/Switched-Inductor Structures for Getting Transformerless Hybrid DC–DC PWM Converters , 2008, IEEE Transactions on Circuits and Systems I: Regular Papers.

[27]  Fang Lin Luo,et al.  Advanced DC/DC Converters , 2003 .