Kalman Filter Based Controller Design for Wind Energy Conversion

The active and reactive powers in the doubly-fed induction generator (DFIG) create a cross-coupling impact and inter-dependent relationship, affecting each other. This effect would not result in desirable reference tracking. To remove the cross-coupling impact, common decoupling methods such as state feedback decoupling can be applied. However, system robustness is too low against wind speed variation and consequently to that of rotor speed, which is inevitable. This disadvantage can be overcome by the suggestion of a Linear Quadratic Gaussian (LQG) controller. Using this controller, system robustness is improved versus both wind speed and DFIG parameters variation.

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W artykule opisano metodę odsprzężenia mocy czynnej w sterowaniu maszyną o dwustronnym zasilaniu (DFIG) poprzez zastosowanie regulatora LQG (ang. Linear Quadratic Gaussian). W ten sposób uzyskuje się poprawę dynamiki odpowiedzi algorytmu z odprzężeniem na zmianę prędkości wirnika oraz parametrów maszyny.