Contribution to Determination of Domain of Attraction in Power Systems: Application to Drives with Input Filter.
IEEE Industry Applications Society Annual Meeting(2009)
摘要
The objective of this paper is to present an analytical method allowing large signal stability analysis of an electric system constituted by a DC power supply and its output filter connected to a constant power load. Here, the load is realized by a voltage source inverter - motor - mechanical load actuator system. We suppose that proper controllers are used to drive the actuator. Then, a large signal stability analysis is given for studying the dc-link voltage behavior under large unknown disturbances. This study is based on the Takagi-Sugeno theorem which generates a Lyapunov function allowing the determination of a domain of attraction for a given operating point. This approach may be applied either to estimate robustness properties of a controlled drive system or to be used as a design tool for the dc-link capacitance value. Simulations and experimentations confirm the validity of the proposed approach.
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关键词
Nonlinear systems,ac drives,dc-link capacitance,stability,robustness
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