Vibration uye ruzha rwechigarire magineti mota Kudzidza paKufurira kweStator Electromagnetic Force Iyo electromagnetic ruzha rweiyo stator mumotokari inonyanya kukanganiswa nezvinhu zviviri, iyo electromagnetic excitation simba uye maitiro ekuita uye acoustic radiation inokonzerwa neinowirirana excitation simba. Ongororo yeongororo.
Muzvinafundo ZQZhu kubva kuYunivhesiti yeSheffield, UK, nezvimwewo vakashandisa nzira yekuongorora kuti vadzidze simba remagetsi uye ruzha rwechigarire magineti mota stator, chidzidzo chepfungwa chesimba remagetsi remagetsi echigarire brushless mota, uye kuzunguzika kwechigarire. magineti brushless DC mota ine matanda gumi uye 9 slots. Ruzha runodzidzwa, hukama pakati pesimba remagetsi uye hupamhi hwezino re stator hunodzidzwa, uye hukama pakati pe torque ripple uye mhedzisiro yemhedzisiro yekuzunguza uye ruzha inoongororwa. Muzvinafundo Tang Renyuan naSong Zhihuan vekuShenyang University yeTekinoroji vakapa nzira yekuongorora yakakwana yekuongorora simba remagetsi uye kuwirirana kwaro mumotokari yemagineti yechigarire, iyo yakapa tsigiro yedzidziso yekuwedzera kutsvagisa padzidziso yeruzha rwechigarire magineti mota. Iyo electromagnetic vibration ruzha sosi inoongororwa yakatenderedza magineti echigarire synchronous mota inofambiswa neine wave uye frequency inoshandura, hunhu hweiyo mhepo gap remagineti, iyo yakajairika magetsi emagetsi uye ruzha rwekuzunguza inodzidzwa, uye chikonzero che torque. ripple inoongororwa. Iyo torque pulsation yakateedzerwa uye yakasimbiswa kuyedza kushandisa Element, uye torque pulsation pasi peakasiyana slot-pole fit mamiriro, pamwe nemhedzisiro yemhepo gap kureba, pole arc coefficient, chamfered angle, uye slot upamhi pane torque pulsation yakaongororwa. . Iyo electromagnetic radial simba uye tangential simba modhi, uye inoenderana modal simulation inoitwa, iyo electromagnetic simba uye vibration ruzha mhinduro inoongororwa mu frequency domain uye acoustic radiation modhi inoongororwa, uye inofananidzira simulation uye yekuyedza tsvakiridzo inoitwa. Zvinotaridzwa kuti nzira huru dzechigarire magineti mota stator inoratidzwa mumufananidzo.
Iyo huru modhi yeanogara magineti mota
Motokari muviri chimiro optimization tekinoroji Iyo huru magineti inoyerera mumotokari inopinda mugero remhepo zvakanyanya radially, uye inogadzira radial mauto pane stator uye rotor, zvichikonzera emagetsi vibration uye ruzha. Panguva imwecheteyo, inogadzira tangential nguva uye axial simba, zvichikonzera tangential vibration uye axial vibration. Muzviitiko zvakawanda, senge asymmetric motors kana single-phase motors, iyo inogadzirwa tangential vibration yakakura kwazvo, uye zviri nyore kukonzeresa resonance yezvikamu zvakabatana nemota, zvichikonzera ruzha. Kuti uverenge ruzha rwemagetsi, uye kuongorora nekudzora ruzha urwu, zvinodikanwa kuti uzive kwaanobva, inova iyo simba wave inogadzira vibration uye ruzha. Nechikonzero ichi, kuongororwa kwemafungu emagetsi emagetsi kunoitwa kuburikidza nekuongororwa kweiyo air-gap magineti. Tichifunga kuti iyo magineti flux density wave inogadzirwa ne stator ndeye, uye iyo magineti flux density wave.
Zvinhu zvakadai se stator uye rotor slotting, kutenderera kwemhepo, kupinza ikozvino waveform kukanganisa, air-gap permeance fluctuation, rotor eccentricity, uye kusaenzana kumwe chete kunogona kutungamira kumagetsi deformation uyezve vibration. Iyo nzvimbo harmonics, nguva harmonics, slot harmonics, eccentricity harmonics uye magineti saturation yemagnetomotive simba zvese zvinogadzira yakakwirira harmonics yesimba uye torque. Kunyanya iyo radial force wave mu AC mota, ichaita pane stator uye rotor yemota panguva imwe chete uye kuburitsa magineti edunhu kukanganisa. Iyo stator-frame uye rotor-casing chimiro ndiyo huru radiation sosi yemota ruzha. Kana iyo radial simba iri pedyo kana kuenzana neakasikwa frequency ye stator-base system, resonance ichaitika, izvo zvinokonzeresa deformation ye motor stator system uye kuburitsa vibration uye acoustic ruzha. Kazhinji kazhinji, Kune mota inotyairwa neinverter, nekuda kwekuvapo kweyakanyanya-kurongeka nguva harmonics mune yazvino yeayo stator windings, iyo nguva harmonics ichagadzira yakawedzera pulsating torque, iyo inowanzova yakakura kupfuura iyo pulsating torque inogadzirwa nenzvimbo harmonics. hombe. Uye zvakare, iyo voltage ripple inogadzirwa neiyo rectifier unit inoendeswa kune inverter kuburikidza nepakati dunhu, zvichikonzera imwe mhando yekupuruzira torque. Nekuda kweruzha rwemagetsi echigarire magineti synchronous mota ine chekuita, Maxwell simba uye magnetostrictive simba ndizvo zvikuru zvinokonzeresa mota vibration uye ruzha.
Motor stator vibration maitiro Ruzha rwemagetsi rwemota haruna hukama chete neiyo frequency, kurongeka uye amplitude yemagetsi emagetsi simba wave inogadzirwa nemhepo gap remagineti, asi zvakare inoenderana neyakasikwa modhi yechimiro chemota. Electromagnetic ruzha runogadzirwa zvakanyanya nekuzunguza kwemota stator uye casing. Naizvozvo, kufanotaura mafambiro echisikigo eiyo stator kuburikidza neaitioretical mafomula kana simulations pamberi, uye kudzikamisa iyo electromagnetic simba frequency uye yakasikwa frequency ye stator, inzira inoshanda yekudzikisa ruzha rwemagetsi. Kana kuwanda kweiyo radial simba wave yemota yakaenzana kana kuswedera kune yakasarudzika frequency yeimwe kurongeka kwe stator, resonance ichakonzerwa. Panguva ino, kunyangwe amplitude yeradial force wave isiri yakakura, inokonzeresa kuzunguzika kukuru kwe stator, nekudaro ichigadzira ruzha rukuru rwemagetsi. Kune ruzha rwemotokari, chinhu chinonyanya kukosha ndechekudzidza maitiro echisikigo ane radial vibration seyo huru, iyo axial order ndeye zero, uye spatial mode chimiro chiri pazasi pechitanhatu kurongeka, sezvakaratidzwa mumufananidzo.
Stator vibration fomu
Paunenge uchiongorora iyo vibration maitiro emota, nekuda kweiyo shoma pesvedzero yekunyorovesa pane modhi chimiro uye kuwanda kweiyo mota stator, inogona kufuratirwa. Structural damping ndiko kudzikiswa kwemazinga evibration padhuze neresonant frequency nekushandisa yakakwira simba dissipation mechanism, sezvakaratidzwa, uye inongotariswa kana padyo neiyo resonant frequency.
damping effect
Mushure mekuwedzera ma windings kune stator, pamusoro pemamhepo mukati mesimbi core slot inobatwa nevarnish, iyo insulating bepa, varnish uye mhangura waya inosungirirwa kune imwe neimwe, uye iyo insulating pepa mune slot zvakare yakanyatsobatanidzwa kune mazino. yepakati pesimbi. Naizvozvo, iyo in-slot winding ine kumwe kuomarara mupiro kune iyo iron core uye haigone kubatwa sehumwe huwandu. Kana iyo inogumira chinhu nzira ichishandiswa pakuongorora, zvinodikanwa kuti uwane ma paramita anotaridza akasiyana emakanika zvivakwa zvinoenderana nezvinhu zvema windings mu cogging. Munguva yekuitwa kwekuita, edza kuve nechokwadi chemhando yependi yekunyudza, kuwedzera kushushikana kweiyo coil mhepo, kuvandudza kusimba kwemhepo uye musimboti wesimbi, wedzera kuomarara kwechimiro chemota, wedzera iyo yakasikwa frequency kudzivirira. resonance, kuderedza vibration amplitude, uye kuderedza mafungu emagetsi. noise. Iyo yakasikwa frequency ye stator mushure mekudzvanywa mu casing yakasiyana neyeiyo imwechete stator core. Iyo casing inogona kuvandudza zvakanyanya kuwanda kwakasimba kweiyo stator chimiro, kunyanya yakaderera-yakarongeka yakasimba frequency. Kuwedzera kweinotenderera yekumhanyisa mapoinzi ekushandisa kunowedzera kuoma kwekudzivirira resonance mukugadzira mota. Paunenge uchigadzira mota, kuomarara kwechimiro chegomba kunofanirwa kudzikiswa, uye kuwanda kwechisikigo kwechimiro chemotokari kunogona kuwedzerwa nekuwedzera zvakafanira ukobvu hwegoko kudzivirira kuitika kweresonance. Pamusoro pezvo, zvakakosha kuseta zvine musoro hukama hwekubatana pakati peiyo stator core uye casing kana uchishandisa inogumira chinhu fungidziro.
Electromagnetic Analysis yeMotors Sechiratidzo chakakosha cheiyo electromagnetic dhizaini yemota, iyo magineti density inogona kazhinji kuratidza mamiriro ekushanda emota. Naizvozvo, isu tinotanga tabvisa uye kutarisa kukosha kweiyo magineti density, yekutanga ndeye kuona chokwadi chekufananidza, uye chechipiri ndechekupa hwaro hwekuzotora kunotevera kwesimba remagetsi. Iyo yakabviswa mota magineti density gore dhayagiramu inoratidzwa mumufananidzo unotevera.
Zvinogona kuonekwa kubva pamepu yegore kuti magineti density panzvimbo yemagineti yekuzviparadzanisa bhiriji yakakwira zvakanyanya kupfuura inflection point yeBH curve ye stator uye rotor core, iyo inogona kutamba zviri nani magineti yekuzviparadzanisa nevamwe.
Air gap flux density curve Bvisa iyo magineti densities yemota mhepo gap uye zino chinzvimbo, dhizaina curve, uye iwe unogona kuona chaiwo kukosha kweiyo mota mweya gap remagineti density uye zino remagineti density. Iyo magineti density yezino imwe chinhambwe kubva pane inflection point yezvinhu, iyo inofungidzirwa kuti inokonzerwa nekurasikirwa kwesimbi yakakura kana mota yakagadzirwa nekumhanya kukuru.
Zvichienderana neiyo mota chimiro modhi uye gidhi, tsanangura izvo zvinhu, tsanangura iyo stator musimboti sesimbi yekugadzira, uye tsanangura iyo casing sealuminium zvinhu, uye ita modal ongororo pamota yese. Iyo yakazara modhi yemota inowanikwa sezvakaratidzwa mumufananidzo uri pazasi.
yekutanga-odha modhi chimiro
yechipiri-order mode chimiro
chechitatu-order mode chimiro
Kuongorora kwemotor vibration Mhinduro yeharmonic yemota inoongororwa, uye mhedzisiro yekumhanyisa kwekudengenyeka kwakasiyana-siyana inoratidzwa mumufananidzo uri pazasi.
1000Hz radial kukurumidza
1500Hz radial kukurumidza
2000Hz radial kukurumidza