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Solar Mini Grid | A Feedback Passivation Design for DC Microgrid and Its DC/DC Converters
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A Feedback Passivation Design for DC Microgrid and Its DC/DC Converters

A Feedback Passivation Design for DC Microgrid and Its DC/DC Converters

Open AccessArticle 1 College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China 2 State Grid Zhejiang Electric Power Company, Hangzhou 310007, China * Author to whom correspondence should be addressed. Academic Editor: Josep M. Guerrero Received: 22 October 2016 / Revised: 27 November 2016 / Accepted: 13 December 2016 / Published: 23 December 2016 (This article belongs to the Collection Smart Grid) There are difficulties in analyzing the stability of microgrids since they are located on various network structures. However, considering that the network often consists of passive elements, the passivity theory is applied in this paper to solve the above-mentioned problem. It has been formerly shown that when the network is weakly strictly positive real (WSPR), the DC microgrid is stable if all interfaces between the microgrid and converters are made to be passive, which is called interface passivity. Then, the feedback passivation method is proposed for the controller design of various DC–DC converters to achieve the interface passivity. The interface passivity is different from the passivity of closed-loop systems on which the passivity based control (PBC) concentrates. The feedback passivation design is detailed for typical buck converters and boost converters in terms of conditions that the controller parameters… Read the rest of the story at A Feedback Passivation Design for DC Microgrid and Its DC/DC Converters

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