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| Received:March 12, 2010Revised:July 02, 2010 |
| 基金项目:This work was supported by the National Key Basic Research Project of China (No. 2004CB318000), and the National Natural Science Foundation of China (No. 10571095). |
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| A family of robust adaptive excitation controllers for synchronous generators with steam valve via Hamiltonian function method |
| Song XU,Xiaorong HOU |
| (School of Automation Engineering, University of Electronic Science and Technology of China; Faculty of Science, Ningbo University) |
| Abstract: |
| Using the Hamiltonian function method, this paper proposes a family of robust adaptive excitation controllers for synchronous generators with steam valve control. First, a parameterization method of robust adaptive controllers is investigated for dissipative Hamiltonian systems. This method avoids solving Hamilton-Jacobi-Issacs inequalities. The parameters in the family of controllers thus obtained are determined by a locally positive semidefinite function, which has only 2n independent variables, twice as many as the one used to characterize the state feedback. Then, with the parameterization method and the structural properties of dissipative Hamiltonian systems, a family of robust adaptive excitation controllers is designed for synchronous generators with steam valve control, disturbances and unknown parameters. Simulations illustrate the effectiveness and feasibility of the excitation control strategy proposed in the paper. |
| Key words: Parameterization Robust adaptive controller Synchronous generator Steam valve control Hamiltonian function method |
