- 08
- Nov
Sidee lagu xaqiijin karaa hagaajinta SCR?
Sida loo xaqiijiyo hagaajinta la xakameeyey ee SCR (thyristor)
Isticmaalka aasaasiga ah ee toosiyeyaasha silikon ee caadiga ah waa hagaajinta kontoroolka. Wareegga toosiyaha diode ee la yaqaan waa wareeg toosiye aan la xakameyn karin. Haddii diode lagu beddelo toosiye silikoon gacanta ku haysa, wareegtada toosiyaha ah ayaa la samayn karaa. Waxaan sawiraa wareegga toosiye ee kontoroolka leh ee ugu fudud hal waji badh-mawjadaha. Inta lagu guda jiro wareegga togan ee nuska ah ee danabka AC sinusoidal U2, haddii tiirka kantaroolka ee VS uusan galin garaaca garaaca wadnaha Ug, VS weli lama dami karo. Kaliya marka U2 ay ku jirto wareegga togan ee nuska iyo garaaca garaaca wadnaha Ug ayaa lagu dabaqayaa tiirka kantaroolka, thyristor ayaa kiciyay inuu shido. Sawir qaabkeeda mawjada, waxaad arki kartaa in kaliya marka garaaca garaaca wadnaha Ug yimaado, soosaarka UL ee culeyska RL. Ug goor hore ayay timaadaa, SCR-duna goor hore ayay shidmi doontaa; Ug goor dambe ayuu yimaadaa, SCR-kuna wuu daaray. Beddelidda wakhtiga imaatinka garaaca kicinta Ug ee tiirka kantaroolka, celceliska qiimaha UL (aagga qaybta hadhsan) ee korantada wax soo saarka ee culeyska waa la hagaajin karaa. Injineernimada korantada, wareegga kala bar ee hadda beddelka ah waxaa badanaa loo dejiyaa 180°, kaas oo loo yaqaan xagal koronto. Sidan oo kale, wareeg kasta oo badhkii togan ee U2, xagasha korantada ee laga soo bilaabo qiimaha eber ilaa wakhtiga garaaca garaaca wadnaha waxaa lagu magacaabaa xagasha kontoroolka α; xagasha korantada ee thyristor ku qabto wareeg kasta oo badhkii togan waxa loo yaqaan xagasha conduction θ. Sida iska cad, α iyo θ labadaba waxaa loo isticmaalaa in lagu muujiyo dhaqdhaqaaqa ama xannibaadda baaxadda thyristor inta lagu jiro wareegga nuska ee danabka hore. Adigoo bedelaya xagasha kontoroolka α ama xagasha korantada θ, celceliska qiimaha UL ee garaaca garaaca garaaca DC ee culeyska waa la bedelayaa, hagaajinta la xakameyn karo waa la xaqiijiyay.