Iyo yekumashure electromotive simba rechigarire magineti synchronous mota inogadzirwa sei?Sei ichinzi back electromotive force?

 1. Kumashure kwe electromotive simba kunogadzirwa sei?

Muchokwadi, chizvarwa chekumashure electromotive simba chiri nyore kunzwisisa.Vadzidzi vane ndangariro dziri nani vanofanira kuziva kuti vakaratidzirwa kwairi vachiri vaduku kuchikoro chesekondari uye chesekondari.Nekudaro, yainzi induced electromotive force panguva iyoyo.Nheyo yacho ndeyokuti kondakita anocheka mitsara yemagineti.Chero bedzi paine maviri Relative kufamba kwakaringana, ingave iyo magineti haifambi uye kondakita anocheka;zvinogonawo kuva kuti conductor haafambi uye magnetic field inofamba.

Yechigarire magineti synchronousmota, makoiri ayo anogadziriswa pane stator (conductor), uye magineti asingagumi anogadziriswa pa rotor (magnetic field).Apo rotor inotenderera, iyo magnetic field inogadzirwa nemagetsi echigarire pane rotor inotenderera uye inokwezva ne stator.Iyo coil pairi inochekwa uyemusana we electromotive forceinogadzirwa mu coil.Sei ichinzi back electromotive force?Sezvinoratidzwa nezita racho, nekuti kwakananga kumashure kwesimba remagetsi E rinopesana nekwainoenda kune terminal voltage U (sezvinoratidzwa mumufananidzo 1).

      2. Ndeupi hukama pakati pemagetsi emagetsi ekumashure uye terminal voltage?

Zvinogona kuonekwa kubva kuMufananidzo 1 kuti hukama huri pakati pemagetsi emagetsi ekumashure uye terminal voltage pasi pemutoro ndeiyi:

Yeyedzo yekumashure electromotive simba, inowanzoyedzwa pasi pe-isina-mutoro mamiriro, hapana ikozvino, uye kumhanya kwekutenderera i1000rpm.Kazhinji, kukosha kwe 1000rpm kunotsanangurwa, uye kumashure kwe electromotive force coefficient = chiyero chepakati chemashure electromotive force / speed.Iyo yekumashure electromotive force coefficient ndiyo yakakosha parameter yemota.Zvinofanira kucherechedzwa pano kuti kumashure electromotive simba pasi pemutoro inogara ichichinja kusati kwagadzikana.Kubva kuequation (1), tinogona kuziva kuti simba rekumashure remagetsi riri pasi pemutoro ishoma pane terminal voltage.Kana simba rekumashure remagetsi 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 simba rekumashure remagetsi raisavapo?Zvinogona kuonekwa kubva kuequation (1) kuti pasina back electromotive force, mota yese yakaenzana ne pure resistor uye inova mudziyo unogadzira kunyanya kupisa kwakanyanya.Izvizvinopesana nenyaya yekuti mota inoshandura simba remagetsi kuitamechanical simba.

Muhukama hwekushandura simba remagetsi

, UIt ndiyo inopinza simba remagetsi, senge yekupinza simba remagetsi mubhatiri, mota kana transformer;I2Rt ndiyo simba rekurasikirwa nekupisa munharaunda yega yega, chikamu ichi chesimba imhando yekurasikirwa nekupisa simba, diki iri nani;kupinza simba remagetsi nekurasikirwa nekupisa Musiyano wesimba remagetsi chikamu chesimba rinobatsira rinoenderana neshure remagetsi emagetsi.

, mune mamwe mazwi, simba rekumashure re electromotive rinoshandiswa kugadzira simba rinobatsira, iro rinopindirana nekurasikirwa kwekupisa.Iyo yakakura yekurasikirwa kwekupisa simba, iyo idiki simba rinobatsira rinogona kuwanikwa.

Nechinangwa kutaura, simba rekumashure re electromotive rinopedza simba remagetsi munharaunda, asi haisi "kurasikirwa".Chikamu chesimba remagetsi rinoenderana nerekumashure electromotive simba rinozoshandurwa kuita simba rinobatsira pamidziyo yemagetsi, semagetsi emagetsi emota uye simba rebhatiri.Chemical simba etc.

      Zvinogona kuonekwa kuti saizi yekumashure kwesimba remagetsi inoreva kugona kwechigadzirwa chemagetsi kushandura simba rekuisa rose kuita simba rinobatsira, uye rinoratidza mwero wekugona kutendeuka kwemidziyo yemagetsi.

      4. Hukuru hwemashure emagetsi emagetsi anoenderana nei?

Kutanga ipa iyo calculation formula ye back electromotive force:

E isimba remagetsi rekoiri, ψ ndiyo inobatana nemagineti, f ndiyo frequency, N nhamba yekutendeuka, uye Φ ndiyo inoyerera yemagineti.

Zvichienderana neformula iri pamusoro, ndinotenda kuti munhu wese anogona kutaura zvishoma zvinhu zvinokanganisa saizi yekumashure emagetsi emagetsi.Heino pfupiso yechinyorwa:

(1) Iyo yekumashure electromotive simba yakaenzana neshanduko yekuchinja kweiyo magineti yekubatanidza.Iyo yakakwirira yekutenderera kumhanya, iyo yakakura shanduko mwero uye yakakura yekumashure simba remagetsi;

(2) Iyo magineti chinongedzo pachayo yakaenzana nenhamba yekutendeuka yakapetwa nekamwe-turn magineti link.Naizvozvo, iyo yakakwira nhamba yekutendeuka, yakakura iyo magineti link uye yakakura yekumashure electromotive simba;

(3) Nhamba yekutendeuka inoenderana nechirongwa chekutenderera, nyeredzi-delta yekubatanidza, nhamba yekutendeuka pane slot, nhamba yezvikamu, nhamba yemazino, nhamba yematavi akafanana, yakazara-pitch kana pfupi-pitch scheme;

(4) Iyo imwechete-inotendeuka magineti yekubatanidza yakaenzana neiyo magnetomotive simba rakakamurwa nemagineti kuramba.Naizvozvo, iyo yakakura iyo magnetomotive simba, idiki iyo magineti kuramba munzira yeiyo magineti yekubatanidza, uye yakakura kumashure emagetsi simba;

(5) Iyo magnetic resistanceine hukama nekubatana kwemhepo gap uye pole slot.Iyo yakakura iyo gap yemhepo, iyo yakakura iyo magineti kuramba uye diki kumashure emagetsi emagetsi.Iyo pole-groove coordination yakaoma uye inoda kuongororwa kwakadzama;

(6) Iyo magnetomotive simba ine hukama neremanence yemagineti nenzvimbo inoshanda yemagineti.Iyo yakakura remanence, iyo yakakwirira kumashure kwe electromotive simba.Iyo nharaunda inoshanda ine hukama neiyo magnetizing kutungamira, saizi uye kuiswa kwemagineti, uye inoda ongororo chaiyo;

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

      Muchidimbu, zvinhu zvinopesvedzera zvesimba rekumashure remagetsi zvinosanganisira kumhanya kwekutenderera, nhamba yekutendeuka pane slot, nhamba yezvikamu, nhamba yemapazi anoenderana, pfupi yakazara pitch, mota magineti wedunhu, kureba kwemhepo, pole-slot coordination, magineti residual magnetism, uye magnet placement position.Uye saizi yemagineti, magnetization kutungamira, tembiricha.

      5. Ungasarudza sei saizi yekumashure electromotive simba mukugadzira mota?

Mukugadzira mota, iyo yekumashure electromotive simba E yakakosha zvikuru.Ini ndinofunga kana iyo yekumashure electromotive simba yakanyatsogadzirwa (yakakodzera saizi kusarudzwa uye yakaderera waveform kukanganisa mwero), mota ichave yakanaka.Mhedzisiro mikuru yekumashure electromotive simba pamamotors ndeaya anotevera:

1. Saizi yemashure emagetsi emagetsi anogadzirisa nzvimbo inopera simba yemota, uye nzvimbo inopera simba inotarisa kugoverwa kwemepu inoshanda zvakanaka.

2. Kukanganiswa kweyero yekumashure electromotive force waveform inokanganisa ripple torque yemota uye kugadzikana kweiyo torque kubuda kana mota ichimhanya.

3. Kukura kwemashure emagetsi emagetsi anogadzirisa zvakananga torque coefficient yemotokari, uye shure electromotive force coefficient inonyatsoenderana neyo torque coefficient.Kubva pane izvi tinogona kutora zvinotevera kupokana kwakatarisana mukugadzira mota:

a.Sezvo simba rekumashure remagetsi rinowedzera, mota inogona kuchengetedza yakakwira torque pasiwe controllerdzikamisa ikozvino munzvimbo yakaderera-yekumhanya yekushanda, asi haigone kuburitsa torque nekumhanya kwakanyanya, kana kutosvika pakumhanya kunotarisirwa;

b.Kana simba rekumashure remagetsi riri diki, mota ichine kugona kubuda munzvimbo inomhanya-mhanya, asi torque haigone kusvikwa pasi pemutongi mumwechete aripo pakumhanya kwakaderera.

Naizvozvo, dhizaini yekumashure emagetsi emagetsi zvinoenderana nezvinodiwa chaizvo zvemota.Semuenzaniso, mukugadzirwa kwemota diki, kana zvichidikanwa kuti urambe uchiburitsa torque yakakwana pakumhanya kwakaderera, ipapo iyo yekumashure electromotive simba inofanirwa kugadzirwa kuti ive yakakura.