Isimiso se ukuchithwa kwesithando somlilo: Izimfuneko zesekethe ye-trigger yokulungisa kabusha

1. Ngokuvama kanye nesigaba sokushaya kwenhliziyo, sisebenzisa isifunda se-rectifier esilawulwa ngokugcwele esinezigaba ezintathu, esabelana ngezingxenye eziyisithupha ze-thyristor. Ngakho-ke, isifunda se-trigger siyadingeka ukuze sinikeze amasignali e-trigger ezikhathi eziyisithupha (Vg, Vg2, Vg3, Vg4, Vg5, V g6) Futhi ubudlelwano besigaba sama-trigger pulses ayisithupha bungu-60° ngokuhlukana ngokulandelana.

2. Ububanzi be-Pulse kanye nonqenqema oluholayo: ekuhlaziyeni isimiso sokusebenza sesekhethi yesigaba sesithathu sohlobo lwebhuloho elawulwa ngokugcwele, kushiwo ukuthi ibhuloho elilawulwa ngokugcwele kufanele libe nama-thyristors amabili avuliwe nganoma yisiphi isikhathi, okudinga wonke umjikelezo (360°) Ngaphakathi, kufanele kube nama-pulses amabili kuphela nganoma isiphi isikhathi. Ngakho-ke, ububanzi be-pulse ngayinye kufanele bube bukhulu kuno-T/60=60°, futhi ububanzi be-trigger pulse akumele bube banzi kakhulu. Ngokuvamile, kuthenjwa ukuthi kuzoba ngaphansi kuka-T/3/120°. Ukuze icuphe ngendlela efanele, i-trigger pulse iyadingeka ukuthi ibe nomphetho owanele oholelayo, kodwa ngenxa yokuthi i-trigger pulse frequency kusistimu efanayo yokulungisa iphansi (50Hz) futhi ububanzi be-pulse bukhulu (bukhulu kune-T/6), uma izingxenye ze-thyristor azixhunyiwe ochungechungeni , Imfuneko yomkhawulo ohamba phambili we-trigger pulse ayiphezulu, inqobo nje uma ingaba ngaphansi kuka-0.3ms.

3. Amandla okushaya kwenhliziyo, ukuze i-thyristor ivulwe ngaphansi kokusetshenziswa kwe-trigger pulse, i-trigger pulse iyadingeka ukuze ibe namandla athile. I-voltage ye-trigger ephezulu kanye ne-high trigger current ye-electrode yokulawula edingwa ama-thyristors wamandla ahlukene ahlukile.

Isibonelo, i-voltage ye-trigger ephezulu ye-KP200A yi-4V, i-trigger yamanje ephezulu ingu-200mA, i-voltage eya phambili ephezulu evunyelwe yesigxobo sokulawula ngu-10V, futhi umkhawulo wamanje ovunyelwe we-pole yokulawula ngu-2A.

1. Ukushintsha kwesigaba, ukuze kunikwe amandla i-voltage yesekethe elungisa kabusha ukuthi ihlangabezane nezimfuneko zesignali “zomkhawulo wamanje”, “umkhawulo wevoltage”, “overcurrent”, “overvoltage”, njll., kuyadingeka ukuthi isigaba se-pulse rectifier ekhiqizwe i-trigger pulse ingaba phakathi kuka-“0°～150° ”Ngaphakathi kobubanzi boshintsho.