Ex Magnet Steel Embry Current Damnum Analysis, haec charta discutit in effectum permanens Magnet motricium rotor temperatus surge et emendationem mensuras

Rare Terra permanens magnes synchronous Brushless motor (RMMSM) cum parvis volumine, lux pondus, princeps efficientiam, etc in doctrina rotor sine damno fundamental undam, rotor temperatus ortum sit humilis et realitatem non.



Cum auctoribus developed a genus augendae salus rara terra permanens Magnet Synchronae motricium quod est exemplum, ibi erat rotor temperatus surge test usque ad I, XXV & deg; Et Phaenomenon C. Rotor temperatus est nimis alta, potest facere periculi de demagnetization de NDFEB permanens magnes, afficiunt normalis opus motricium.



Hoc charta analyzes potest causas ad rotor temperatus surge est magna, ponit deinceps ad mensuras ad redigendum temperatus ortum.



I: Rotor structuram de RECMSM stator in asynchronous motricium stator, plerumque refertur ad structuram de rotor structure.



article by the squirrel-cage asynchronous starting of REPMSM rotor, shaft and rotor core and permanent magnet rotor core composed of plate laminate, and fill in the ndfeb permanent magnets in rotor core, cast aluminum form cage at the same time, as shown in figure 1.



it with asynchronous motor starting process, when the armature winding of the stator zhongtong people balanced Tres-phase alterna current (n), formatam circularis forma rotating magnetica agro Rotor Static, turn Muris caveam, sectiones lineas, et alvum agro, cum cingit magneticam agro, rotor coepit conversus.



Cum autem Rotor celeritas prope synchronoo celeritate, iam non producendum adduci current in caveam talea, sed cum constant magnetica agro formatae per permanens magnes synchroni conversionem, in agro magnetica in normalem operationem.



II rotor temperatus ortum ratio: cum motricium currit febricitantem, ex damna apparatus. Repmsm synchronum operationem, comprehendo ad permanens magnetis rotor damnum damnum et harmica damnum, etc



II. I) damnum permanens magnetes: summary of resistentia est (I. XLIV Current Damna in Alternantium Magnetic. Summary of scelerisque conductivity of VII. VII 卡路里 / m. h. ° C, Pauper calor translationem. NDFEB Magnet est facile ad rubigo, oxidatio, ut calor conduction externa, fueled ortum temperatus ad rotor.



II. II) Harmonic damnum: affectus a factoribus ut Cogging effectus, in Renault Magna agro, harmonica motricium aer gap magnetica agro valde universa. Et harmonicis magnetica agro in diversis celeritas in aere gap relative ad rotor motus, adductus current in rotor core et rat cavea bar, unde in harmonicis damna, faciunt rotor temperatus ortum.



3 lower temperature measures: by the above analysis, puts forward the methods to solve these problems are as follows:



3. 1)Permanent magnet segmented, layered: the placement of permanent magnet is no longer the entire length of the material, but a permanent magnets can be divided into several small pieces or more layers, as shown in figure 2. (and to the permanent magnetsLayer)Surface electrophoresis treatment, to reduce the eddy current loss, lowering the Temperature ortum est rotor.



III. II) augmentum Gap: nam asynchronous motricium, augmentum gap erit crescere magnetica fluxus Leakage, ut agri current augetur, minus efficientiam. Nam rara terra permanens Magnet Synchronae motricium, auget caeli gap, et potest crescere superior harmonica aeris-gap magnetica agro magnetica resistentia et harmonica, ad reducere in harmonicis et harmonicis et in leaking, ad reducere et harmonicos, et sic in rotor damnum, et in modum in caliginiis et in caliditas et in modum, quod in caliditas et in modum, quod est in caliditas, et ad effectum in inferioris et in calorem et in rotor et in caliginiis et ad modum, quod ad effectum et humilior et in calorem et ad modum, quod ad effectum in fluxu temperatus et in, quod est effectus inferioris caliditas ortum.



3)Rotor USES half closed El slot or closed slot: so we can reduce the surface of the rotor core loss and pulse vibration within the tooth loss, and make the effective length of air gap decreases, and improve the power factor, and decrease the air gap permeance harmonic pulse amplitude value, reduce permeance harmonic caused by harmonic losses.



IV) Select convenientem socors coordinatio: inferior harmonicis frequency, rotor socors numerus, magis maius damnum; Siles, Rotor socors numero quam proxima ad I, minimum damnum, ut quantum possibile eligere prope sulcus cooperatur.



5)Stator winding double winding short distance distribution: double winding short distance distribution according to need to choose different span, can reduce the high order harmonic, and reduce the fundamental electromotive force is not big, so as to effectively improve the waveform air-gap magnetic field, reduce the harmonic losses, reduce the temperature rise.



VI) Eligit in altum qualis est NDFEB permanens magnes: in ipsam applicationem, diversis manufacturers eiusdem notam de NDFEB permanens magnes perficientur habere maior differentia. NDFEB diversis gradibus, diversis magnitudinum, Abba current damnum et scelerisque conductivity etiam differunt. Eligere maiore scelerisque conductivity in altum perficientur ndfeb permanens magnes materiae, est utile est calor conduction in magnetica ferro, ita triste temperatus ortum rotor.



4 prototype the improvement measures and the effect of the rotor temperature rise: from the above analysis, ndfeb permanent magnets used in the prototype brand, by the previous 40 sh in 33 uh, a new temperature rise test, as a result of the stator core is 80 ℃, temperature, temperature rise of 51 ℃, the temperature of the rotor core is 140 ℃, temperature is 110 ℃. Mutare post permanens Magnet rotor core temperies decrescebat a X ℃, est magna potentia in temperatus ortum est rotor permanens magnes Embrdy current damnum.



V epilogus: Hic articulus agit de rara terra permanens magnes synchronum motricium motricium rotor temperatus surge nimis altum, et posuit deinceps ad analysis modum tristevae temperatus ortum est rotor. Post permanens Magnet notam de originali prototypum ad test et ostende quod permanens magnes eventus current damnum habebat magna influentiam in rotor temperatus. Ita, si potest accipere permanet magnets in motricium vestibulum processus segmentum vel strepitus mensuras, ut rotor temperatus ortum non declinavit.