Kumashure EMF yePermanent Magnet Synchronous Motor

Kumashure EMF yePermanent Magnet Synchronous Motor

1. Kudzoka EMF kunogadzirwa sei?

Chizvarwa chemashure emagetsi emagetsi chiri nyore kunzwisisa. Nheyo yacho ndeyokuti kondakita anocheka mitsara yemagineti yesimba. Chero bedzi paine kufamba kunoenderana pakati pezviviri izvi, iyo magineti inogona kumira uye conductor oicheka, kana conductor inogona kumira uye magineti inofamba.

Kune echigarire magineti synchronous motors, makoiri avo akaiswa pane stator (conductor) uye magineti echigarire akaiswa pane rotor (magnetic field). Apo rotor inotenderera, simba remagineti rinogadzirwa nemagetsi echigarire pa rotor richatenderera, uye richagurwa nemakoiri ari pa stator, ichiita shure electromotive simba mumakoiri.Sei ichinzi back electromotive force? Sezvinoratidzwa nezita racho, kwakananga kumashure kwesimba remagetsi E rinopesana nekwainoenda kumagetsi ekupedzisira U (sezvinoratidzwa pamufananidzo 1).

Mufananidzo 1

2.Ndeupi hukama pakati peEMF yekumashure uye terminal voltage?

Zvinogona kuonekwa kubva kuMufananidzo 1 kuti hukama huripo pakati pesimba remagetsi rekumashure uye terminal voltage iri pasi pemutoro ndeiyi:

Iyo yekumashure electromotive force test inowanzoitwa pasi pekusava nemamiriro ezvinhu, pasina ikozvino uye nekukurumidza kwe1000 rpm. Kazhinji, kukosha kwe1000rpm kunotsanangurwa se-back-EMF coefficient = average back-EMF value / speed. Kumashure-EMF coefficient ndiyo yakakosha parameter yemota. Zvinofanira kucherechedzwa pano kuti kumashure-EMF pasi pemutoro inogara ichichinja kusati kwaita kukurumidza kugadzikana.Kubva muforomo (1), tinogona kuziva kuti kumashure emagetsi emagetsi pasi pemutoro idiki pane iyo terminal voltage. Kana simba rekumashure remagetsi richinge rakakura kudarika magetsi emagetsi, rinova jenareta uye rinoburitsa voltage kune kunze. Sezvo kupikisa uye ikozvino mubasa chairo kuduku, kukosha kwemashure emagetsi emagetsi anenge akaenzana nemagetsi ekupedzisira uye anogumira nehuwandu hwehuwandu hwemagetsi emagetsi.

3. Chirevo chemuviri chemusana electromotive simba

Fungidzira kuti chii chaizoitika kana EMF yekumashure isipo? Kubva paequation (1), tinogona kuona kuti pasina EMF yekumashure, mota yacho yese yakaenzana neakachena resistor, ichiva mudziyo unogadzira kupisa kwakawanda, izvo zvinopesana nekushandurwa kwemota kwesimba remagetsi kuita magetsi emagetsi. iyo yemagetsi simba rekushandura equation,UI ndiyo simba remagetsi rekuisa, senge simba remagetsi rekupinza kubhatiri, mota kana transformer; I2Rt ndiyo simba rekurasikirwa nekupisa munharaunda yega yega, inova rudzi rwekupisa kwekupisa simba, idiki iri nani; mutsauko uripo pakati pesimba remagetsi rekuisa uye kupisa kupera simba remagetsi, Ndiro simba rinobatsira rinoenderana nerekumashure electromotive simba..Nemamwe mazwi, kumashure EMF inoshandiswa kugadzira simba rinobatsira uye inopindirana nekurasikirwa kwekupisa. Iyo yakakura yekupisa kupisa simba, iyo idiki iyo inogoneka inobatsira simba.Nechinangwa kutaura, kumashure electromotive simba rinopedza simba remagetsi mudunhu, asi haisi "kurasikirwa". Chikamu chesimba remagetsi rinoenderana nerekumashure electromotive simba rinozoshandurwa kuita simba rinobatsira remidziyo yemagetsi, senge mechanical simba remota, kemikari simba remabhatiri, nezvimwe.

Zvinogona kuonekwa kubva pane izvi kuti saizi yemashure emagetsi emagetsi inoreva kugona kwechigadzirwa chemagetsi kushandura huwandu hwese hwekuisa simba kuita simba rinobatsira, rinoratidza mwero wekugona kutendeuka kwemidziyo yemagetsi.

4. Hukuru hwemashure emagetsi emagetsi anoenderana nei?

Iyo yekuverenga formula ye back electromotive simba ndeye:

E ndiyo coil electromotive force, ψ is the magnetic flux, f is the frequency, N inhamba yekutendeuka, uye Φ ndiyo magnetic flux.
Zvichienderana neformula iri pamusoro, ndinotenda kuti munhu wese anogona kutaura zvishoma zvinhu zvinokanganisa ukuru hweiyo kumashure electromotive simba. Heino chinyorwa chekupfupisa:

(1) Kumashure EMF yakaenzana nechiyero chekuchinja kwemagineti flux. Iyo yakakwirira kumhanya, iyo yakakura chiyero chekuchinja uye yakakura kumashure EMF.

(2) Iyo magineti inoyerera pachayo yakaenzana nenhamba yekutendeuka yakapetwa nekamwe-turn magineti flux. Naizvozvo, iyo yakakwira nhamba yekutendeuka, yakakura iyo magineti flux uye yakakura kumashure EMF.

(3) Nhamba yekutendeuka inoenderana nehurongwa hwekutenderera, hwakadai seyeredzi-delta yekubatanidza, nhamba yekutendeuka pane slot, nhamba yezvikamu, nhamba yemazino, nhamba yematavi akafanana, uye yakazara-pitch kana pfupi-pitch scheme.

(4) Single-turn magineti flux yakaenzana ne magnetomotive simba rakakamurwa nemagineti kuramba. Naizvozvo, iyo yakakura iyo magnetomotive simba, iyo idiki iyo magineti kuramba munzira yemagnetic flux uye yakakura kumashure EMF.

(5) Magnetic kuramba ane hukama nemhepo gap uye pole-slot kurongeka. Iyo yakakura iyo gap yemhepo, yakakura iyo magineti kuramba uye diki kumashure EMF. Pole-slot coordination yakanyanya kuoma uye inoda ongororo chaiyo.

(6) Magnetomotive simba rine hukama neasara magineti egineti nenzvimbo inoshanda yemagineti. Iyo yakakura iyo yakasara magineti, iyo yakakwira kumashure EMF. Nzvimbo inoshanda ine hukama negwara remagineti, saizi uye kuiswa kwemagineti uye inoda ongororo chaiyo.

(7) Residual magnetism ine hukama nekushisa. Iyo yakakwirira tembiricha, iyo idiki kumashure EMF.

Muchidimbu, izvo zvinokanganisa kumashure EMF zvinosanganisira kumhanya kwekutenderera, nhamba yekutendeuka pane slot, nhamba yezvikamu, nhamba yemapazi akafanana, yakazara pitch uye pfupi mbichana, mota magineti wedunhu, kureba kwemhepo, pole-slot matching, magineti simbi inosara magineti. , magineti simbi kuiswa uye saizi, magineti simbi magnetization kutungamira, uye tembiricha.

5. Ungasarudza sei saizi yekumashure electromotive simba mukugadzira mota?

Mukugadzira mota, kumashure EMF E yakakosha. Kana iyo kumashure EMF yakanyatso gadzirwa (yakakodzera saizi, yakaderera waveform kukanganisa), mota yakanaka. Iyo yekumashure EMF ine akati wandei maitiro pamota:

1. Hukuru hweEMF kumashure hunosarudza husina simba hwemagineti yemotokari, uye iyo isina simba remagineti inotarisa kugoverwa kwemepu inoshanda zvakanaka.
2. Kukanganiswa kweyero yekumashure EMF waveform inokanganisa mota ripple torque uye kutsvedzerera kweiyo torque inobuda kana mota ichimhanya.
3. Kukura kweEMF kumashure kunogadzirisa zvakananga torque coefficient yemotokari, uye shure kweEMF coefficient yakaenzana neyo torque coefficient.
Kubva pane izvi, zvinotevera kupokana mukugadzira mota zvinogona kuwanikwa:
a. Kana iyo EMF yekumashure yakakura, mota inogona kuchengetedza yakakwira torque pamuganho wekutonga ikozvino munzvimbo yakaderera-yekumhanya yekushanda, asi haigone kuburitsa torque nekumhanya kwakanyanya, uye haikwanise kusvika kune inotarisirwa kumhanya;
b. Kana iyo EMF yekumashure iri diki, mota ichine yekubuda kwenzvimbo munzvimbo yekumhanya-mhanya, asi torque haigone kuwanikwa pane imwechete controller ikozvino pakumhanya kwakaderera.

6. Mhedzisiro yakanaka yeEMF yekumashure pamagineti echigarire.

Kuvepo kweEMF kumashure kwakakosha zvakanyanya pakushanda kweanogara magineti mota. Inogona kuunza mamwe mabhenefiti uye akakosha mabasa kune mota:
a. Kuchengetedza magetsi
Iyo yekumashure EMF inogadzirwa neanogara magineti mota inogona kuderedza ikozvino yemota, nekudaro ichidzikisa kurasikirwa kwesimba, kuderedza kurasikirwa kwesimba, uye kuzadzisa chinangwa chekuchengetedza simba.
b. Wedzera torque
Iyo EMF yekumashure inopesana nemagetsi emagetsi. Kana iyo mota kumhanya ichiwedzera, iyo kumashure EMF inowedzerawo. Iyo reverse voltage inoderedza inductance yemotor winding, zvichikonzera kuwedzera kwezvino. Izvi zvinobvumira mota kuti igadzire yakawedzera torque uye kugadzirisa mashandiro emagetsi emota.
c. Reverse deceleration
Mushure mekunge magineti echigarire apera simba, nekuda kwekuvapo kweEMF yekumashure, inogona kuramba ichiburitsa magineti uye kuita kuti rotor irambe ichitenderera, iyo inoumba mhedzisiro yekumashure EMF reverse kumhanya, iyo inobatsira zvakanyanya mune mamwe maapplication, akadai. sematurusi emuchina nemimwe midziyo.

Muchidimbu, kumashure EMF chinhu chakakosha chekusingaperi magineti mota. Iyo inounza akawanda mabhenefiti kune anogara magineti mota uye inoita basa rakakosha mukugadzira nekugadzira mota. Saizi uye waveform yekumashure EMF zvinoenderana nezvinhu zvakaita sedhizaini, maitiro ekugadzira uye kushandiswa kwemamiriro eiyo inogara magineti mota. Saizi uye waveform yeshure EMF ine simba rakakosha pakuita uye kugadzikana kwemota.

Anhui Mingteng Permanent Magnet Electromechanical Equipment Co., Ltd. (https://www.mingtengmotor.com/)inyanzvi inogadzira zvechigarire magineti synchronous motors. Nzvimbo yedu yehunyanzvi ine vanopfuura makumi mana evashandi veR&D, yakakamurwa kuita madhipatimendi matatu: dhizaini, maitiro, uye kuyedza, inyanzvi mukutsvagisa nekusimudzira, dhizaini, nekuita hunyanzvi hwekusingaperi magineti synchronous motors. Uchishandisa nyanzvi yedhizaini software uye yakazvigadziridza inogara magineti mota yakakosha dhizaini zvirongwa, panguva yekugadzira mota uye kugadzira maitiro, saizi uye waveform yekumashure electromotive simba inotariswa zvakanyatsoenderana nezvinodiwa chaizvo uye chaiwo mamiriro ekushanda emushandisi kuona. kuita uye kugadzikana kwemota uye kunatsiridza kushanda nesimba kwemota.

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