Umgaqo we ukuchithwa kwesithando somlilo: Iimfuno zesekethe yokuqalisa isilungisi

1. Kwi-frequency kunye nesigaba se-pulse, sisebenzisa isigaba sesithathu sebhulorho-uhlobo olulawulwa ngokupheleleyo lwesekethe ye-rectifier, eyabelana ngamacandelo amathandathu e-thyristor. Ngoko ke, i-trigger circuit iyadingeka ukubonelela ngeempawu ezintandathu ze-trigger periodic (Vg, Vg2, Vg3, Vg4, Vg5, V g6) Kwaye ubudlelwane besigaba sesithandathu se-pulses yi-60 ° eyahlukileyo ngokulandelelana.

2. Ububanzi be-Pulse kunye ne-edge ehamba phambili: kuhlalutyo lomgaqo-nkqubo wesigaba sesithathu se-bridge-type-controlled rectifier circuit, kukhankanyiwe ukuba ibhulorho elawulwa ngokupheleleyo kufuneka ibe ne-thyristors ezimbini ezivuliwe nangaliphi na ixesha, nto leyo efuna. umjikelo ngamnye (360°) Ngaphakathi, kufuneka kubekho kwaye kubekho iipulses ezimbini kuphela nangawuphi na umzuzu omnye. Ngoko ke, ububanzi be-pulse nganye kufuneka bube bukhulu kune-T / 60 = 60 °, kwaye ububanzi be-trigger pulse akufanele bube bukhulu kakhulu. Ngokubanzi, kulindeleke ukuba ibe ngaphantsi kwe-T/3/120°. Ukuze uqalise ngokuchanekileyo, i-trigger pulse iyadingeka ukuba ibe nomphetho owaneleyo okhokelela, kodwa ngenxa yokuba i-trigger pulse frequency kwi-rectifier system iphantsi (50Hz) kwaye ububanzi be-pulse bukhulu (bukhulu kune-T / 6), ukuba amacandelo e-thyristor awaxhunyiwe kwi-series , Imfuno yomgca ohamba phambili we-trigger pulse ayiphezulu, ngokude nje ingaba ngaphantsi kwe-0.3ms.

3. Amandla e-pulse, ukwenzela ukuba i-thyristor ivulwe phantsi kokusetyenziswa kwe-pulse ye-trigger, i-trigger pulse iyadingeka ukuba ibe namandla athile. I-voltage ephezulu ye-trigger kunye neyona nto iphezulu ye-trigger yangoku ye-electrode yokulawula efunwa yi-thyristors yamandla ahlukeneyo ahlukeneyo.

Ngokomzekelo, i-voltage ephezulu ye-trigger ye-KP200A yi-4V, i-high trigger current yi-200mA, i-voltage ephezulu evumelekileyo ye-voltage yolawulo yi-10V, kwaye ubuninzi obuvumelekileyo bepoli yokulawula ngu-2A.

1. Ukutshintshwa kwesigaba, ukwenzela ukuba amandla ombane ohlaziyiweyo ahlangabezane neemfuno zophawu “lomda wangoku”, “umda wevoltage”, “i-overcurrent”, “overvoltage”, njl.njl., kuyafuneka ukuba isigaba se-rectifier pulse eveliswe ngu i-trigger pulse ingaba ngaphakathi “0°～150°”Ngaphakathi kobubanzi botshintsho.