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Download Control in power electronics and electrical drives : by Rudolf Zwicky; International Federation of Automatic PDF

By Rudolf Zwicky; International Federation of Automatic Control; Symposium on Control in Power Electronics and Electrical Drives

Comprises ninety seven papers which offer a useful review of the most recent technical strategies during this swiftly increasing box. parts of improvement which obtain specific recognition comprise the emergence of strength switching transistors, the applying of microprocessors to rules and keep watch over of static converters and electric drives, using extra refined regulate concepts and the usage of energy electronics in new program fields.

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Read Online or Download Control in power electronics and electrical drives : proceedings of the 3. IFAC Symposium, Lausanne, 12 - 14 Sept. 1983 PDF

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Extra info for Control in power electronics and electrical drives : proceedings of the 3. IFAC Symposium, Lausanne, 12 - 14 Sept. 1983

Example text

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By observing v1 , these parameters are identified. vl r li l + wl (L l ' i l d + 1 t i 0d) q q (25) 0 ( iOd - i l ) - w T i d s O Oq ( 26-A) 0 (i Oq - i l q ) + w TO iOd s (26 -B) the o ther hand, real and reactive component of input power (P 1 , Q1 ) is represented from eq . (2 5 ) as On P l = v l di l + v lq i lq d 2 r l i l + wlL t (i l q iOd - i l di Oq ) ( 33) eq . ( 3 2 ) is wri tten as Characteris tics of induction motor at oper­ rating s teady s tate is represented from eqs . ( 9 ) and ( 10) as r li l - wl (L l ' i l + L i Oq ) q t d ' Y /;;, ( w11 11) ( w11 1 ) 2 a l /;;, Ql + (P l - r l i l 2 ) 2 PARAMETER IDENTIFICATION AT OPERATING STEADY STATE vld Now defining a pair o f new variab l es ( 2 7) ( 34) This al gebraic equation is satisfied at any operating s tates under a condition that iron loss is neg ligib l e .

U . s ta tor fl ux l i n kage at seve ra l l oads ( 1 500 rpm . ) In F i g . 9 the s i tuati on a t con s tant torque and speed i s g i ven . It sh ows cu rrent and p . u . stator fl ux vs . rotor frequency . It a 1 so de­ mon strates h ow to e stab l i sh the I 1 -f 2 control characte r i s ti c . In case of the g i ven charac­ teri s t i c of the test mac h i n e i t respec ts ef­ fi ci ency and cu rrent consump t i on cri ter i on i n the same way . ]_ . ,, for 90 86 20-c 1,0 500 0,8 LOO q6 30 : lmax I I I 100 200 300 400 l1 if,;; --,;: yields for 110"C yields soo 600 700 T/Nm F i g .

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