Itandukaniro rikomeye riri hagati ya moteri ikoresha ingufu zihinduka inshuro nyinshi na moteri ikoresha imbaraga zihinduka inshuro nyinshi ni uko ku ruhande rumwe, ikora mu buryo burambuye kuva kuri frequency nke kugeza kuri frequency nyinshi, naho ku rundi ruhande, imiterere y'imbaraga ntabwo ari sinusoidal. Binyuze mu isesengura rya Fourier ry'imiterere y'amashanyarazi, imiterere y'amashanyarazi ikubiyemo harmonics zirenze 2N hiyongereyeho igice cy'umuraba w'ibanze (umuraba w'ubuyobozi) (umubare w'imiraba y'ihindagurika iri muri buri gice cy'umuraba w'ubuyobozi ni N). Iyo SPWM AC converter isohoye ingufu ikayikoresha kuri moteri, imiterere y'umuraba kuri moteri izagaragara nk'umuraba wa sine hamwe na harmonics zishyizweho. Umuraba w'umuraba uzatanga igice cy'umuraba w'umuraba w'umuraba mu ruziga rwa magnetic rwa moteri idahuza, kandi igice cy'umuraba w'umuraba w'umuraba w'umuraba gishyirwa hejuru y'umuraba w'umuraba w'umuraba, ku buryo umuraba w'umuraba w'umuraba w'umuraba w'umuraba w'umuraba uhinduka. Igice cy'umuraba w ...
1. Gutera imbaraga za rukuruzi zikora
Igihombo kiriyongera kandi imikorere iragabanuka. Kubera ko umusaruro w'amashanyarazi ahinduka arimo umubare munini wa harmonics zo mu rwego rwo hejuru, izi harmonics zizatanga umuringa n'icyuma bikwiranye, bigabanye imikorere myiza. Ndetse n'ikoranabuhanga rya SPWM sinusoidal pulse width, rikoreshwa cyane muri iki gihe, ribuza harmonics zo hasi gusa kandi rigagabanya torque ya moteri, bityo ryongera urwego rw'imikorere ruhamye rwa moteri ku muvuduko muto. Kandi harmonics zo hejuru ntizagabanutse gusa, ahubwo zariyongereye. Muri rusange, ugereranije n'amashanyarazi ya sine frequency, imikorere igabanukaho 1% kugeza kuri 3%, kandi power factor igabanukaho 4% kugeza 10%, bityo igihombo cya harmonics cya moteri munsi y'amashanyarazi ya frequency conversion ni ikibazo gikomeye.
b) Gukora vibration n'urusaku bya electromagnetic. Bitewe n'uko hariho urukurikirane rw'uruhererekane rw'ibintu bigezweho, vibration n'urusaku bya electromagnetic nabyo bizakorwa. Uburyo bwo kugabanya vibration n'urusaku busanzwe ari ikibazo kuri moteri zikoresha umuraba wa sine. Kuri moteri ikoresha inverter, ikibazo kirushaho gukomera bitewe n'imiterere y'amashanyarazi idakoresha sinusoidal.
c) Torque yo gukubita inshuro nke ibaho ku muvuduko muto. Imbaraga za magnetomotive za harmonic na rotor harmonic current synthesis, bigatuma torque ya electromagnetic ya harmonic ihoraho na torque ya electromagnetic ya harmonic isimburana, torque ya electromagnetic ya harmonic isimburana izatuma moteri itera imbere, bityo bigira ingaruka ku muvuduko muto. Nubwo hakoreshwa uburyo bwa SPWM modulation, ugereranije n'amashanyarazi ya sine frequency, hazabaho urwego runaka rwa harmonic zo hasi, zizatanga torque yo gukubita ku muvuduko muto kandi zigira ingaruka ku mikorere ihamye ya moteri ku muvuduko muto.
2. Gukora voltage ya impulse na voltage ya axial (amashanyarazi) kuri insulation
a) Umuvuduko w'amashanyarazi ubaho. Iyo moteri ikora, umuvuduko w'amashanyarazi ukoreshwa akenshi ushyirwa hejuru y'umuvuduko w'amashanyarazi ukorwa iyo ibice biri mu gikoresho gihindura frequency bigabanutse, kandi rimwe na rimwe umuvuduko w'amashanyarazi uba mwinshi, bigatuma amashanyarazi ahora ahungabana kuri koyili ndetse n'icyuma gikingira umuriro cyangirika.
b) Gukora voltage y'umurongo n'umuyoboro w'amashanyarazi. Ikorwa ry'amashanyarazi y'umugozi riterwa ahanini n'uko hari ikibazo cy'ihindagurika ry'uruziga rwa rukuruzi n'ingaruka z'amashanyarazi ahindagurika, ibyo bikaba bitari bikomeye muri moteri zisanzwe, ariko bigaragara cyane muri moteri zikoresha ingufu zihinduka. Iyo voltage y'umugozi iri hejuru cyane, imiterere y'amavuta hagati y'umugozi n'umuyoboro izangirika, kandi igihe cyo gukora cy'umugozi kizagabanuka.
c) Gukwirakwiza ubushyuhe bigira ingaruka ku gukwirakwiza ubushyuhe iyo bikoresha umuvuduko muto. Bitewe n'umuvuduko munini wa moteri ikoresha frequency ihindagurika, ikunze gukoresha umuvuduko muto ku gukwirakwiza buhoro. Muri iki gihe, kubera ko umuvuduko uba muto cyane, umwuka ukonjesha utangwa n'uburyo bwo gukonjesha bukoreshwa na moteri isanzwe ntabwo uhagije, kandi ingaruka zo gukwirakwiza ubushyuhe ziragabanuka, kandi gukonjesha umufana wigenga bigomba gukoreshwa.
Ingaruka za mekanike zikunze gutera amajwi, muri rusange, igikoresho icyo ari cyo cyose cya mekanike kizatuma habaho amajwi. Ariko, moteri ikora ku muvuduko n'umuvuduko uhoraho bigomba kwirinda amajwi hamwe n'umuvuduko w'umwimerere wa mekanike w'umuvuduko w'amashanyarazi wa 50Hz. Iyo moteri ikoresha amajwi ahinduranya amajwi, umuvuduko w'imikorere ugira urwego runini, kandi buri gice gifite umuvuduko wacyo karemano, byoroshye gutuma ikora amajwi ku muvuduko runaka.
Igihe cyo kohereza: 25 Gashyantare 2025