歐洲風(fēng)能技術(shù)論文122_eweca_non-linear_control_algorithm_for_improving_performance_of_wind_generator_using_doubly-fed-文庫(kù)吧
2025-01-04 08:51 本頁(yè)面
【正文】 u B us s r rddt ? ? ?39。 39。39。x i , , , ,T Trs r d r q s d s qii ???? ??? ? ? ????1 1 1 22 1 2 2AAAAA??? ????u, Tr rd rquu??? ??12BBBsss??? ???? Rotor angular speed: Input variable of the model Model of DFIM in statespace shows a bilinear system r? 111 1 1()A1 1 1()rrsrrsTTTT???????????????? ? ?????A nonlinear control algorithm for improving performance of wind generator using doublyfed induction generator Page 9 Contents 1. DFIM – Model and its characters. 2. Conventional control of DFIM in wind generator 3. ?ExactLinearization“ – Concept and implemetation with DFIM 4. Control structure with ?DirectDecoupling“ 5. Conclusion and prospects A nonlinear control algorithm for improving performance of wind generator using doublyfed induction generator Page 10 39。 :ssmm a g n e tiz in g c u r r e n tL???Control variables of the active and reactive power 232 ( i )32ssd sd sMssd sdsp u i Rmuip?????2 22c o s is d s ds s d s qiiii? ???39。 0ss d s d r dmL iiL? ? ? ?39。39。ss q s q r q smL i i c o n s tL? ? ? ? ? ?The active power P and reactive power Q will be separately controlled through ird and irq dqus39。s?irsqisdirqirdiis 39。sq?sduA nonlinear control algorithm for improving performance of wind generator using doublyfed induction generator Page 11 A control structure of DFIM in wind generator F r o m D C l i n k U d cktlt mtD F I MG r i duvwrau rbujre ?rdu rquC u r r e n t C o n t r o l l e r*rdi *rqi D N W*GmGm? *?I EL AuN d su ?N?rdirqiF P Trdi rqisdisqiN?n? Gm r? 39。sq?r?T o r q u e amp。 P o w e r f a c t o rC o n t r o l l e r D N W : D e c o u p l i n g N e t W o r k P W M : P u l s e W i d t h M o d u l a t i o n L A : L i n e v o l t a g e A n g l e a c q u i s i t i o n G C : G e n e r a t o r s i d e C o n v e r t e rG CP W M F P T : F l u x , P o w e r f a c t o r a n d T o r q u e C a l c u l a t i o n d q : l i n e v o l t a g e o r i e n t e d r e f e r e n c e f r a m e α β : s t a t o r f i x e d r e f e r e n c e f r a m e a b : r o t o r f i x e d r e f e r e n c e f r a m esdisqi,r k l mi,s u v wiN u vuN vwujre ?? 32rai rbi32si ?si ?Nje ??s d qi 39。sq?A nonlinear control algorithm for improving performance of wind generator using doublyfed induction generator Page 12 Contents 1. DFIM – Model and its characters. 2. Conventional control of DFIM in wind generator 3. ?ExactLinearization“ – Concept and implementation with DFIM 4. Control structure with ?DirectDecoupling“ 5. Conclusion and prospects A nonlinear control algorithm for improving performance of wind generator using doublyfed induction generator Page 13 Why do we apply ?ExactLinearization“ ? ? The nonlinear characters of DFIM ? Exact linearization guarantees not only the linearity between inputs and outputs but also the decoupling between each pair of input and output variable in the new model ?noninteracting‘ ? Performance of system in dynamical operation mode should be improved ? With the success of exactlinearization, different methods to design controllers for the new linear model could be applied. A nonlinear control algorithm for improving performance of wind generator using doublyfed induction generator Page 14 ?ExactLinearization“ – the concept (1)
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