Large-displacement stability in aircraft power systems

Thomas Craddock, Purdue University


With the advent of the More Electric Aircraft (MEA) Initiative, standards for performance and stability are becoming harder to meet. Loads are becoming increasingly harsh, with many now drawing constant power. These loads place a larger strain on the distribution system than other types of loads. Moreover, these loads are being cycled much more quickly than in years past, and as such the response time of the generator control strategy is an increasingly important consideration. The standard diode bridge rectifier system is typically very slow to respond, and presents a difficult problem in terms of control, given the non-linearities of the system in question. A new generator control scheme utilizing an active converter, set forth by Gries, Wasynczuk, Selby, and Lamm in 2008, is investigated here, and compared with more traditional diode bridge rectifier systems in terms of stability and bus voltage response.




Wasynczuk, Purdue University.

Subject Area

Electrical engineering

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