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A novel group delay dispersion (GDD) measurement from a spectral interferogram is presented. Based on the cubic phase function (CPF) of the interference term, the GDD can be directly read from the ridge of CPF without phase retrieval and numerical differentiation operation. The proposed method is applied to measure the GDD and chromatic dispersion difference (CDD) of a polarization-maintaining fiber...
Decentralized load frequency control (LFC) for multi-area power systems with communication delays is studied in this paper. The TDF-IMC-PID tuning method is adopted to handle the constant delays. A method to analyze the stability of a multi-area power system with communication delays under a decentralized LFC is derived by accounting the inherent structure of the multi-area power system. Decentralized...
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