Research on delay-dependent stability of parallel DC-DC converter system based on a Wireless communication

The current-sharing technology based on Wireless communication allows the current of DC-DC parallel system to be divided equally very well. However, the information transmitted by the network inevitably exist a transmission delay, which makes the traditional system into a time-delay systems. This paper presents a method to compute the Critical Delay of a DC-DC Parallel delay system. The method uses frequency-domain techniques and the DC-DC Parallel System linearized average model to obtain the critical delay. Then a Simulation Model with two parallel modules was built. And the main circuit of the modules is BUCK converter. Finally using the MATLAB simulation tools, we demonstrate the correctness of the method.

[1]  S.K. Mazumder,et al.  Wireless PWM control of a parallel DC-DC buck converter , 2005, IEEE Transactions on Power Electronics.

[2]  David J. Perreault,et al.  Frequency-based current-sharing techniques for paralleled power converters , 1996 .

[3]  H. Jin,et al.  A novel control technique to operate DC/DC converters in parallel with no control interconnections , 1998, PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196).

[4]  David J. Perreault,et al.  Switching-ripple-based current sharing for paralleled power converters , 1999 .

[5]  Vladimir L. Kharitonov,et al.  Stability of Time-Delay Systems , 2003, Control Engineering.

[6]  J.G. Kassakian,et al.  Switching-ripple-based current sharing for paralleled power converters , 1997, Proceedings of Power Conversion Conference - PCC '97.

[7]  Renming Yang,et al.  Stability analysis and H∞ control design for a class of nonlinear time‐delay systems , 2012 .

[8]  Jean-Pierre Richard,et al.  Stability of some linear systems with delays , 1999, IEEE Trans. Autom. Control..

[9]  S.K. Mazumder,et al.  "Wireless" control of spatially distributed power electronics , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[10]  Sudip K. Mazumder,et al.  Improving Throughput-delay Performance by Merged Packet Routing in Wirelessly Controlled Interactive Power Networks , 2007, 21st International Conference on Advanced Information Networking and Applications (AINA '07).

[11]  Te-Jen Su,et al.  Robust stability of interval time-delay systems with delay-dependence , 1998 .

[12]  D. Perreault,et al.  Frequency-based current-sharing techniques for paralleled power converters , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[13]  C. K. Michael Tse,et al.  Circuit Theoretic Classification of Parallel Connected DC–DC Converters , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[14]  T. Su,et al.  Robust stability of delay dependence for linear uncertain systems , 1992 .