A device for dynamic determination of the parameters of electrical asynchronous machines

摘要

ufeffzau0159u00edzenu00ed consists of a block (1) of input block (2) determination of the internal voltage, the block (3) determination of the active power, the block (4) identification of the equivalent resistance of the rotor, the block (5) of the rotor currents, block (6) determining the magnetizau010dnu00edho stream block (7) of magnetizau010dnu00ed ind uku010dnosti and block (8) identification of the rotor resistance, the blocks (1, 2, 3, 4, 5, 6, 7, 8).an instantaneous value statorovu00e9ho voltage u.sub.sab.n.mezi phases a and b, an instantaneous value statorovu00e9ho voltage u.sub.sac.n.mezi phases a and c, the instantaneous value statorovu00e9ho stream u013a.sub.sa.n.fu00e1ze and instantaneous value current statorovu00e9ho u013asb phase b, the frequency f.su b.s.n.napu00e1jecu00edho tension, speed n.sub.m.n.otu00e1u010denu00ed rotor and values of the four parameters asynchronnu00edho engine, and the resistance r.sub.s.n.jednu00e9 phase statorovu00e9ho winding, or inductance l.sub.as.n.jednu00e9 phase statorovu00e9ho winding, or inductance l.sub.or.n.jednu00e9 phase rotor winding l.sub.or.n.a number of pu00f3lpu00e1ru016f p.sub.p.n.asynchronnu00edho engine are introduced into the block (1) and processed on the electrical u00fahlo your speed omega..sub.s.n.napu00e1jecu00edho voltage electrical angular speed omega..sub.m.n.rotation of the rotor, the file statorovu00e9ho voltage u.sub.sd.n.v axis d, file statorovu00e9ho voltage u.sub.sq.n.v axis q, file statorovu00e9ho stream i.sub.sd.n.v axis d and q axis current component statorovu00e9ho i.sub.sq.n.v. these values are within the block (2) processed on the component of tension u.sub.ld. n.v axis d, a component of tension u.sub.lq.n.v axis q and the absolute value of the internal voltage u.sub.1.n.these output variables and output variables of the block (1) are processed in the block (3) for immediate internal power p.sub.1.n. the value of output variables of the blocks (1, 2, 3) are processed in the block (4) to the equivalent active resistance r.sub.req.n.rotoru. output variables of blocks (1, 2, 4) are processed in the block (5) on the rotor current component i.sub.rd.n.v axis d and file i.sub.rq.n. rotor currentin the axis q, which together with the outputs of the block (1) processed in a block (6) on the file magnetizau010dnu00edho stream i.sub..mi.d.n.v axis d, file magnetizau010dnu00edho stream i.sub..mi.q.n.v axis q and the absolute value of the current i.sub magnetizau010dnu00edho me..n. the value of output variables of the blocks (1, 2, 6) are processed in a block (7) on the magnetizau010dnu00ed inductance l.sub..n me.the value of output variables of the blocks (1, 4) are processed in a block (8) to the value of resistance r.sub.r.n.rotoru and value of output variables of the blocks (7, 8) are the values of output variables of the system.