Ni iyihe sano iri hagati y'impandeshatu n'iy'inyenyeri, ibyiza n'ibibi byayo?

Ibyo ni bimwemoteri y'ibice bitatuishobora guhuzwa hakoreshejwe uruziga rw'impandeshatu, bijyanye na voltage nkeya; Ishobora kandi guhuzwa hakurikijwe uburyo bwo guhuza inyenyeri, bijyanye na voltage nyinshi; Voltage nyinshi ikubye inshuro 3 umuzi kare w'amashanyarazi make. Urugero, moteri ya 380V ifite uruziga rw'impandeshatu, iyo ihujwe n'uruziga rw'inyenyeri, voltage ijyanye nayo ni 660V. Umurongo wihariye ugomba kuba uhuye na voltage y'amashanyarazi.

Moteri ihujwe n'inyenyeri ntabwo ikora urujya n'uruza rw'amazi imbere, ibyo bikaba ari byiza kurusha urujya n'uruza rw'impandeshatu.
Kubera ko uburyo bwo kuzunguruka butatu budashobora kuringanizwa neza, buri gihe hari itandukaniro rito muriMoteri y'ibice bitatuvoltage, izakora uruziga rw'amazi imbere muri triangle, bigatuma moteri ishyuha kandi ikagabanya ubushobozi bwayo. Ihuza rya triangle naryo rikorwa kubera impamvu z'amateka, ni ukuvuga ko, star-triangle start, star-triangle start ishobora kugabanya neza star current, ariko izagabanya torque yo gutangira, bityo ishobora gukoreshwa gusa mu gihe cyoroheje cyangwa nta torque itangira.

Turabona ko moteri ya pompe y'umufana ishobora gutangizwa na inyenyeri-triangle, ariko nta gushidikanya ko nta gutangizwa na star-triangle kuri crane, guterura ahanini gutangizwa na resistance ya rotor iri kuzunguruka, kuki bitera ibibazo byinshi, hari impamvu. Birumvikana ko imiterere y'ubu yo gutangira guhindura inshuro yakemuye burundu ibibazo nk'ibyo.

Nubwo haba hari insinga eshatu cyangwa enye (zidafite ubutaka), inguni y'amashanyarazi hagati y'insinga eshatu ni itandukaniro rya dogere 120 mu bihe byiza. Bikekwa ko kubera kwivanga kw'igihe runaka, harmonics za 3N zikorwa mu buryo bwo kuzunguruka kw'igice cy'umutwaro, 3N*120=360N, bigaragaza ko igice cy'amashanyarazi cya harmonics za 3N gifite icyiciro cya gatatu ari kimwe, niba amplitude ari imwe, harmonics za 3N z'amatsinda atatu y'insinga zizahagarikwa burundu, ni ukuvuga ko nta harmonics nyinshi za 3 muri voltage iri hagati y'imirongo.

Ku bijyanye n'impandeshatu, imiyoboro ya harmonic ya 3N iri hejuru mu cyiciro kimwe irazunguruka muri iyi mpandeshatu kandi iguma muri iyi mpandeshatu kugira ngo ikore uruziga rudashira. Kubwibyo, kugira ngo harmonic iboneke, ihuriro rya mpandeshatu cyangwa inyenyeri rishobora gutoranywa hakurikijwe niba harmonic ya 3N ishoboka muri voltage cyangwa current.