Doubly Fed Induction Generator Open Stator Synchronized Control during Unbalanced Grid Voltage Condition

Akrama Khan, Xiao Ming Hu, Mohamed Azeem Khan and Paul Barendse
Additional contact information
Akrama Khan: Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa
Xiao Ming Hu: Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa
Mohamed Azeem Khan: Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa
Paul Barendse: Department of Electrical Engineering, University of Cape Town, Cape Town 7701, South Africa

Energies, 2020, vol. 13, issue 12, 1-13

Abstract: In this paper, a systematic synchronization procedure is proposed for a doubly fed induction generator (DFIG) during unbalanced grid voltage conditions. The initial induced voltage at the open stator terminal is required to synchronize with the grid voltage in magnitude, frequency and phase. An open stator negative sequence rotor current controller is implemented with the conventional DFIG vector controller, which allows the induced stator voltage to become as unbalanced as the grid voltage, hence enabling a smooth connection. A brief comparison is provided for practical issues such as controller structure variation between DFIG open stator and normal operating conditions, and initial encoder rotor angle measurement offset. The procedure is validated experimentally on a 2.2 kW laboratory-scaled DFIG test bench.

Keywords: doubly fed induction generator (DFIG); synchronization; sequence control; voltage unbalance; wind energy system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/12/3155/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/12/3155/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:12:p:3155-:d:373006

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().