On the Concept of Negative Impedance Instability in the More Electric Aircraft Power Systems with Constant Power Loads

Paper #:
  • 1999-01-2545

Published:
  • 1999-08-02
Citation:
Emadi, A., Fahimi, B., and Ehsani, M., "On the Concept of Negative Impedance Instability in the More Electric Aircraft Power Systems with Constant Power Loads," SAE Technical Paper 1999-01-2545, 1999, https://doi.org/10.4271/1999-01-2545.
Pages:
13
Abstract:
The purpose of this paper is to present an assessment of the negative impedance instability concept of the constant power loads in the More Electric Aircraft (MEA) power systems. We address the fundamental problems faced in the stability studies of these multi-converter power electronic systems. An approach to the design of sliding-mode controllers for PWM DC/DC converters with constant power loads is presented. Because of the negative impedance destabilizing characteristics of constant power loads, conventional linear control methods have stability limitations around the operating points. However, the proposed controllers improve large-signal stability and dynamic responses. The proposed controllers are simulated and their responses under different operations are discussed. Finally, we verify the stability of the controllers using the second theorem of Lyapunov.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2011-04-12
Standard
2005-04-18
Technical Paper / Journal Article
2011-04-12
Training / Education
2017-06-15
Book
2012-07-01
Training / Education
2018-07-16