A New Control Strategy for Input Voltage Sharing in Input Series Output Independent Modular DC-DC Converters


Vol. 17, No. 3, pp. 632-640, May  2017
10.6113/JPE.2019.17.3.632


PDF    

 Abstract

Input series output independent (ISOI) dc-dc converter systems are suitable for high voltage input and multiple output applications with low voltage rating switches. This paper proposes a novel control strategy consisting of one output voltage regulating (OVR) control loop and n-1 (n is the number of modules in the ISOI system) input voltage sharing (IVS) control loops. An ISOI system with the proposed control strategy can be applied to applications where the output loads of each module are the same. Under these conditions, IVS can be achieved and output voltages copying can be realized in an ISOI system. In this control strategy there is only one controller for each module and the design process of the control loops is simple. Since no central controller is needed in the system, modularity of the system is improved. The operation principle of the new control strategy is introduced and the control effect is simulated. Then the output power and voltage characteristics of an ISOI system under this new control strategy are analyzed. The stability of the proposed control strategy is explored base on a Hurwitz criterion, and the design guide line of the control strategy is given. A two module ISOI system prototype is fabricated and tested in the laboratory. Experimental results verify the effectiveness of the proposed control strategy.


 Statistics
Show / Hide Statistics

Cumulative Counts from September 30th, 2019
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.



Cite this article

[IEEE Style]

W. Yang, Z. Zhang and S. Yang, "A New Control Strategy for Input Voltage Sharing in Input Series Output Independent Modular DC-DC Converters," Journal of Power Electronics, vol. 17, no. 3, pp. 632-640, 2017. DOI: 10.6113/JPE.2019.17.3.632.

[ACM Style]

Wei Yang, Zhijie Zhang, and Shiyan Yang. 2017. A New Control Strategy for Input Voltage Sharing in Input Series Output Independent Modular DC-DC Converters. Journal of Power Electronics, 17, 3, (2017), 632-640. DOI: 10.6113/JPE.2019.17.3.632.