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Modeling and Dynamic Simulations of Doubly Fed Adjustable-Speed Pumped Storage Units

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4 Author(s)
Jen-Kuang Lung ; Dept. of Electr. Eng., Nat. Taipei Univ. of Technol. ; Ying Lu ; Wen-Lung Hung ; Wen-Shiow Kao

This paper derives the mathematical models of doubly fed adjustable-speed pumped storage units (DFASPSUs) to be utilized in the power system analysis. It adopts the improved induction machine model with ac excitation on the wire-wound rotor as well as the field-oriented control theory for the study and analysis of DFASPSU models. First, the rotor excitation voltage is separated into two components, i.e., the q-axis voltage and the d-axis voltage, so as to control the output active and reactive powers, respectively. Next, a dynamic model of DFASPSU is derived using the swing equation of rotary electric machine and the equation of motion of rotor rotating mass. Finally, computer simulation is carried out to compare its results with practical examples in terms of dynamic characteristics for verifying the correctness of the proposed models.

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Energy Conversion, IEEE Transactions on  (Volume:22 ,  Issue: 2 )