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| Large Signal Stability Criteria for Constant Power Loads with Damped Filters |
| Liu Xinbo, Zhou Yuanjun, Zhang Wei |
| Beijing University of Aeronautics and Astronautics Beijing 100191 China |
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Abstract The power systems of modern aircrafts increase applications of converter loads and electric motor loads. These loads, when tightly regulated, behave as constant power loads (CPLs) with negative incremental impedance, which may destabilize the system. This paper proposes damped filters as effective methods to stabilize the power system, built the mixed potential models of the CPLs with four different structures of damped filters, respectively, and derived stability criteria for the system under large disturbances. Based on the amount of negative incremental impedance of the CPLs, the criteria give constraints on the filter parameters. Finally, the stability criteria are verified by experimental results.
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Received: 02 November 2010
Published: 07 March 2014
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2011, Vol. 26 
