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Preventing instability in DC distribution systems by using power buffering

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2 Author(s)
Logue, D.L. ; Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA ; Krein, P.T.

Negative incremental impedance of regulated converter loads can cause stability problems in distributed DC power systems. Since the load-side converters usually contain energy storage elements, it is possible to avoid instability through transient control of the load-side converter input impedance. In this paper, bus-side stability is used as a control constraint. It is shown that load-side converter control-loop gain can be modified to improve stability characteristics, or even actively controlled to meet given impedance specifications

Published in:

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual  (Volume:1 )

Date of Conference:

2001