kudonhedzwa kunyorera vira kushanda musimboti – parallel resonance

frequency power supply

Iyo magetsi eiyo induction yakanyunguduka choto inotora iyo parallel resonance simba repakati pefrequency supply, inova ndiyo yekutanga kushandisa kwepakati frequency magetsi magetsi muChina. Icho chinhu chefrequency conversion chinoshandura matatu-phase simba frequency AC simba remagetsi kuita imwe-phase yepakati frequency frequency simba remagetsi. Kubatsira kwayo ndeyekuti ine simba rakasimba rekugadzirisa uye inogona kushandiswa semagetsi emagetsi kudonhedzwa kunyorera vira .

Mufananidzo 2-1 unoratidza dhiyagiramu yemusimboti wedunhu guru reiyo parallel resonant yepakati frequency magetsi magetsi, iyo inonyanya kuumbwa yekuzviparadzanisa nevamwe switch (DK), AC contactor (kana yemagetsi wedunhu breaker KM), inopinda mutsetse inductance (L1 ~ L3) , uye inokurumidza coupler (FU), rectifier (VT1 ~ VT6), smoothing reactor (LF), inverter (VT7 ~ VT10), parallel resonant load (L, C) . Iyo inogadzirisa inoshandura iyo-nhatu-chikamu simba frequency alternating ikozvino kuita yakananga ikozvino; iyo inotsvedzerera reactor inoshandiswa kusefa yakagadziridzwa yazvino ripple uye kuparadzanisa akasiyana ripple voltages pakati peinogadzirisa uye inverter; iyo inverter inoshandura yakananga ikozvino mune imwe-chikamu chepakati frequency Alternating current; iyo parallel resonant load inoumbwa neinductor uye compensation capacitor inogona kugadzirisa zviri nani kuchinja kwezvinhu zvinotakura panguva yekupisa.

Mufananidzo 2-1 Parallel resonance yepakati frequency simba rekupa main circuit

1 Nheyo yacho inoratidzwa mumufananidzo 2-2. Sezvo iyo inotsvedzerera reactor (LF) ine yakakura inductance uye mutoro uri inductive mutoro, mutoro wazvino unobuda nemugadziri unoenderera uye mutsara wakatwasuka. Kana aW60 °, iyo yakabuda waveform ye rectifier rectifier yakafanana neyeyo inodzivirira mutoro, uye mutemo wekuita wakafanana neuyo wemutoro unodzivirira. Kana a> 60 ° , nekuda kwekuita kweinductor LF , thyristor icharamba yakashandurwa mushure mokunge magetsi emagetsi ayambuka zero, kusvikira thyristor inotevera ichiitwa kuti ibatike, kuitira kuti nzvimbo isina kunaka ionekwe mune waveform ye iyo rectifier yakabuda voltage, asi rectifier inobuda ikozvino ichiri Imwe nhanho

Waya. Kana iyo angle yekudzora inowedzera kusvika 90. Kana nzvimbo dzakanaka uye dzisina kunaka mumhepo inobuda waveform yakaenzana, chiyero chepakati chekubuda kwemhepo Ud = 0. Kana a> 90 °, rectifier redunhu rinoshanda mune inoshanda inverter inoshanda mamiriro. The phase shift shift range ye rectifier circuit yepakati frequency power supply is 0°~150°.

( 2) Inverter circuit Figure 2-3 is schematic diagram ye parallel inverter circuit. Iyo capacitor C mumutoro wemutoro inobatanidzwa mukufanana ne inductor coil L, uye kuchinja kunobva pamusimboti weparallel resonance, saka inonzi parallel resonance inverter circuit. Iyo DC voltage Ud yakapihwa ne thyristor-yakazara-inodzorwa rectifier wedunhu inoramba ichichinjika, uye parallel inverter wedunhu inverted iyo DC simba mune yepakati frequency AC simba rekupa kumutoro. Iyo DC yedivi tambo ine hombe sefa inductance LF, saka iri yazvino-mhando inverter. Nekuti iyo frequency yekushanda yakakwira, ma thyristors e 4 bhiriji maoko e inverter wedunhu anotora nekukurumidza thyristors. L7 ~ L10 ndiyo commutation inductance ye inverter thyristor, iyo inoshandiswa kudzikamisa yazvino kusimuka kweiyo thyristor panguva yekufamba.

Mufananidzo 2-3 Schematic diagram ye parallel inverter circuit