Grid Forming Stator Flux Control of Doubly-Fed Induction Generator

Norbert Klaes, Florian Pöschke and Horst Schulte
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Norbert Klaes: Department Energy and Information, Campus Wilhelminenhof, University of Applied Sciences Berlin, 12459 Berlin, Germany
Florian Pöschke: Department Energy and Information, Campus Wilhelminenhof, University of Applied Sciences Berlin, 12459 Berlin, Germany
Horst Schulte: Department Energy and Information, Campus Wilhelminenhof, University of Applied Sciences Berlin, 12459 Berlin, Germany

Energies, 2021, vol. 14, issue 20, 1-12

Abstract: The doubly fed induction generator is widely used in wind power applications. For stand-alone operation of this machine, the control of the stator flux with fixed voltage and frequency has been proposed. This paper extends the stator flux control of the doubly fed induction machine by droop mechanisms, which vary the setpoint of flux magnitude and frequency depending on active and reactive power. This gives the doubly fed induction generator system unknown grid supporting and grid forming performance. The validation of the proposed control scheme has been conducted on a 10 kVA testbed system. The closed-loop behavior of the system has been proven to enable grid-tied and islanded operation with the same control structure. The system response to load changes and islanding events show no disruptive transients in both conditions.

Keywords: doubly fed induction generator; stator flux control; droop control; microgrid; voltage-fed control; distributed energy generation; islanding; phase intervention (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: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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