Control of a doubly fed induction generator at grid voltage imbalance

• Autorzy: Łuszczyk T. , Iwański G.

Identyfikatory

DOI

10.5277/PED170210

• Języki publikacji: EN

Abstrakty

EN

Properties and control of a doubly fed induction machine operating under unbalanced grid voltage conditions have been presented. The proposed method does not include symmetrical sequences decomposition and is realized in a rotating frame not synchronized either with the grid voltage vector or with the stator flux vector. The method uses a reference torque and the reference q component of instantaneous power for calculation of the reference stator current. Next, calculation of magnetizing current for a given unbalanced grid voltage is used to assign the reference rotor current. Due to the fact that the reference current contains both a positive and a negative sequence, a proportional-integral-resonant controller is used. The main control target is the non-oscillatory waveform of torque, whereas other separate strategies like symmetrical stator current or sinusoidal rotor current can be easily obtained by adequate filtration of the reference control signals of the stator or rotor currents, respectively. The simulation results of the 2 MW model have been presented for a doubly fed induction generator as well as the results of laboratory tests with the use of a small scale 7.5 kW machine.

Słowa kluczowe

EN

doubly fed induction generator; power control; torque control; unbalanced grid

• Wydawca: De Gruyter
• Czasopismo: Power Electronics and Drives
• Rocznik: 2017
• Tom: Vol. 2 (37), No. 2
• Strony: 31--48
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Łuszczyk T.

• Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warszawa, Poland

autor

Iwański G.

• Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warszawa, Poland

Bibliografia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).