AUTHORS: Chen Qian

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ABSTRACT: Avionics battery discharge regulator which derives power from battery and delivers power to load plays an important role in power conditioning unit. With the merits of high efficiency, stable transfer function and continuous input and output current, non-isolated weinberg converter is suitable for avionics battery discharge regulator. Improved peak current control strategy is put forward in order to achieve high current sharing accuracy and reliability. Based on the small signal model of three-module non-isolated weinberg converter system, the current and voltage controllers are designed. The system with the designed controllers operates stably in any operating conditions and achieves an excellent transient response and current sharing accuracy.

KEYWORDS: Weinberg, BDR, Modeling, Peak-current mode control, Current sharing

REFERENCES:

[1] Weijun Lei ， Chengan Wan and Bo Han ． Modeling analysis and study of the Weinberg converter with current programming control for space application．Proceedings of the 8th European Space Power Conference， Konstanz，Germany，2008．

[2] Weijun Lei and Yanjun Li ． Small-signal Modeling and Analysis of the Weinberg Converter for High-Power Satellites Bus Application．Chinese Journal of Electronics， 2009，18(1)：171-176．

[3] Ejea-Marti J.，Sanchis-Kilders E.，Maset E.， et al．Phase Margin Degradation of a Peak Current Controlled Converter at Reduced Duty Cycle ． IEEE Transactions on Power Electronics，2010，25(4)：863-874．

[4] Ejea-Marti J.，Sanchis-Kilders E.，Maset E.， et al ． Stability problems of peak current control at narrow duty cycles．Proceedings of IEEE Conference on Applied Power Electronics，Burjassot，Spain，2008．

[5] Ejea-Marti J.，Sanchis-Kilders E.，Maset E.， Peak Current Control Instabilities at Narrow Duty Cycles．Proceedings of IEEE Conference on Computational Intelligence and Security Workshops，Burjassot，Spain，2008．

[6] Maset E. ， A. Ferreres ， 5kW Weinberg converter for battery discharging in high-power communications satellites ， Proceedings of IEEE Conference on Power Electronics Specialists，Burjassot，Spain，2005．

[7] Maset E. ， J.B. Ejea ， A. Ferreres， HighEfficiency Weinberg Converter for Battery Discharging in Aerospace Applications ． Proceedings of IEEE Conference on Applied Power Electronics， Burjassot，Spain，2006．

[8] R. D. Middlebrook ．Design Techniques for Preventing Input-Filter Oscillations in Switched-Mode Regulators ． Proceedings of Powercon 5，1978．

[9] B. Choi ， B.H. Cho ， R.B. Ridley ， et al．Control strategy for multi-module parallel converter system ． Proceedings of IEEE Conference on Power Electronics Specialists， Blacksburg，United States，1990．

[10] Robert W Erickson．Fundamentals of power electronics (2nd edition) ． Massachusetts ： Kluwer Academic Publisher，2001：462-504．

[11] Kazimierczuk M.K. ． Transfer function of current modulator in PWM converters with current-mode control．IEEE Transactions on Circuits and Systems I，2000，47(9)：1407- 1412．