Advanced Vector Control Design for DFIM-Based Hydropower Storage for Fault Ride-Through Enhancement
- 12 June 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Energy Conversion
- Vol. 30 (4), 1449-1459
- https://doi.org/10.1109/tec.2015.2437953
Abstract
This paper proposes an advanced vector control method for rotor side converter of doubly-fed induction machine (DFIM)-based storage hydropower in order to enhance the fault ride-through capability in both generating and motor modes. In this method, the active power and stator voltage control loops are on the d-axis and q-axis, respectively. Since the active power and the stator voltage control loops are inherently slow and nonlinear, an effective input signal (EIS) based on Lyapunov theory is designed and added to the d -axis of the rotor voltage. It is shown that the EIS can compensate the induced voltage in the rotor windings, rotor back electromotive force during the large disturbances, when it is added to the conventional vector controller. The sizing of the converters, considering the active and reactive power priority, are also investigated in order for the EIS to comply to the existing actual limitations. The effectiveness of the proposed rotor side controller is examined in a 381 MVA adjustable speed-pumped storage hydropower, operating in both generating and motor modes. Finally, simulation results performed in Matlab/SimPowerSys is presented in order to validate the proposed control system.Keywords
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