Nonlinear optimization of proportional-integral controller in doubly-fed induction generator using the Gradient Extremum Seeking algorithm
| Autor: | Aleksandra Marjanovic Lj., A Aleksandar Saric |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Gradient Extremum Seeking (GES)
doubly-fed induction generator (DFIG) Computer Networks and Communications Energy Engineering and Power Technology 7. Clean energy law.invention Nonlinear programming Control theory law Proportionalintegral (PI) regulator Electrical and Electronic Engineering Power system Nonlinear parameter optimization Mathematics Mechanical Engineering proportional integral(PI) regulator Doubly-fed induction generator (DFIG) Integral controller gradient extremum seeking (GES) power system Hardware and Architecture Control and Systems Engineering nonlinear parameter optimization lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:TK1-9971 Doubly fed electric machine |
| Zdroj: | Serbian Journal of Electrical Engineering (2019) 16(2):161-180 Serbian Journal of Electrical Engineering, Vol 16, Iss 2, Pp 161-180 (2019) |
| ISSN: | 2217-7183 1451-4869 |
| DOI: | 10.2298/sjee1902161s |
| Popis: | This paper deals with the problem of nonlinear optimization of proportional-integral (PI) controller in doubly-fed induction generator (DFIG), modeled by the detailed differential-algebraic equations (DAEs), and connected to a power system, where rest of the power system is represented only by measurements in connection point. The basic functions of PI controllers are secondary regulation of speed-active power and reactive power-voltage of multiple DFIGs connected in the same point (typical situation in wind farms). In the presence of PI controllers, stability of the transient responses depends largely on its parameters (proportional and integral part). To calculate optimal parameters of the PI controllers, an ‘Extremum Seeking’ (ES) algorithm was used, more precisely, its version that assumes that gradient can be calculated [hence the name ‘Gradient Extremum Seeking’ (GES)]. Optimization of the PI controller parameters is performed for a list of major disturbance trajectories recorded in historical database. The results obtained using the IEEE 14-bus test system show that PI controller parameters must be carefully chosen. Their effect on transient responses and stability of the power system with major disturbance (short circuit, outage etc.) conditions was additionally studied. |
| Databáze: | OpenAIRE |
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