The Research on Stability of DC/DC in Parallel System


In this paper, a main structure of DC distributed power system is introduced; the stability of the output voltage in parallel system is put forward. This paper analyses the output impedance of master-slave current sharing mode and average current sharing, analyses the stability of parallel system through simulation, there is Right-half plane (RHP) polar in the Bode plot of input impedance. At last this paper distinguishes whether this system is stability and verifies the validity of the simulation.

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Y. Xu, P. Hou, J. Wang, L. Xu and C. Shi, "The Research on Stability of DC/DC in Parallel System," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 803-806. doi: 10.4236/epe.2013.54B154.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] W. P. Zhang, “Modeling and Control of Switching Converters,” China Electric Power Press, Beijing, 2006, pp. 25-27.
[2] D. H. Ding, “Power Electronic Technology,” Aviation Industry Press, Beijing, 2006, pp. 43-45.
[3] P. R. Gray, P. J. Hurst, S. H. Lewis, et al., “Analysis and Design of Analog Integrated Circuit,” 4th Edition, John Wiley & Sons Ltd., Chichester, 2001.
[4] A. Emadi, A. Khaligh, C. H. Rivetta and G. A. Williamson, “Constant Power Loads and Negative Impedance Instability in Automotive Systems: Definition, Modeling, Stability, and Control of Power Electronic Converters and Motor Drives,” Vehicular Technology, IEEE Transactions on, Vol. 55, pp. 1112-1125, 2006.
[5] Z. Yao, P. G. Therond and B. Davat, “Stability Analysis of Power Systems by the Generalized Nyquist Criterion,” in Control, 1994.Control '94. International Conference on, 1994, pp. 739-744, Vol. 1.
[6] X. Sun, Y.-S. Lee and D. H. Xu, “Modeling, Analysis, and Implementation of Parallel Multi-Inverter Systems with Instantaneous Average-Current-Sharing Scheme,” Power Electronics, IEEE Transactions on, Vol. 18, No. 3, 2003, pp. 844-856. doi:10.1109/TPEL.2003.810867

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