Txoj kev tshawb no ntawm lub thaj chaw ntawm semiconductors tso cai los tsim khoom tshiab uas tau tau nquag siv nyob rau hauv ntau yam hluav taws xob circuits. Maj mam muaj ntau haib pab kiag li lawm uas tso cai rau switching circuits ntawm tus muaj hwj huam.
Ib tug piv txwv zoo ntawm no yog ib tug thyristor converter. Txij thaum nws cov inception, nws pib mus rau txaus siab rau ib tug zoo-deserved muaj koob meej ntawm designers. Qhov no ntaus ntawv yog dav siv nyob rau hauv ntau yam hluav taws xob circuits: oob khab thiab cov roj teeb chargers, vuam tshuab, cua sov, inverters, tswj rectifiers , etc. Qhov no yog tsis yog ib tug ua tiav daim ntawv teev cov pab kiag li lawm nyob rau hauv uas lub thyristor converter siv.
Thaum lub sij hawm, muaj hwj chim loj seev los ntawm kev uas nws tau los ua tau los tswj cov kev ceev ntawm electric motors los yog cua sov nroj tsuag. Lawv tau koom siv nyob rau hauv ntau lawm, thiab nyob rau hauv tej rooj plaub txawm hloov cov tsoos system thaum lub sij hawm "generator-lub cev muaj zog" (GD).
Paub tswj circuits heev zog cia siab rau ntawm cov kiag li lawm. Haib thyristor converter muaj peev xwm tswj lub excitation tam sim no, los yog siv ncaj qha mus rau hauv lub thauj tog rau nkoj saw engine. Txawm li cas los, cov thawj system ntawm mem tes-theem tswj (IFSB) feem ntau coj erratically. Qhov no yuav ua nyob rau hauv, hais tias, ib tug "yob-tshaj" ntawm lub inverter thiab tso zis rau ntawm lub hwj chim lub Cheebtsam ntawm lub system. Cov yam ntxwv puag, ib yam nkaus thiab, yoojyim npaum li cas yuav tsum tau kawm. Thaum lub sij hawm, cov teeb meem no yog ib tug tshaj plaws ntawm yav dhau los. Muaj txhim khu kev qha hluav taws xob ntaus ntawv uas yog securely tswj thiab, yog tias tsim nyog, los tiv thaiv rhiab overload thyristor converter. Nws tseem yog tsim nyog yuav tau nco ntsoov rau hauv lub siab efficiency, zoo maintainability thiab me me luaj li cas no ntaus ntawv nrog hwm rau lwm systems.
Tab sis dhau li ntawm kev kawm zoo, xws li muaj tej yam shortcomings nyob rau hauv kev sib raug zoo mus rau lub hwj chim Circuit Court:
Qhov ratio ntawm reactive thiab active hwj chim thaum uas siv cov lawv tsis hloov mus rau qhov zoo dua rau tag nrho cov mov network sab. Kom txuag tau tus cos φ tau siv compensators ntawm reactive hwj chim rau lub hauv paus ntawm lub capacitors.
Nyob rau hauv nws cov hauj lwm, thyristor converters heev hnyav ncawv plua plav paug hwj chim network ntawm siab zaus cuam. tshwj xeeb RC-circuits yog siv rau tshwj kom txhob no disadvantage.
Nrog rau kev siv ntawm qhia tshwj xeeb uas tsim los pab kiag li lawm yuav tau hloov ib tug parameter xws li cov zaus ntawm lub mains. Nws yog siv nyob rau hauv lub induction cua sov, thaum txoj kev ua ib tug hlau los yog lwm yam hluav taws xob sib. Qhov no muaj nuj nqi yog ua los ntawm ib tug qhia tshwj xeeb uas tsim rau lub hom phiaj no thyristor zaus converter. Nws creation tau ho khees me ntsis uas twb muaj lawm thaum lub sij hawm ntawm cov hlau ua hauj lwm technology nyob rau hauv lub chaw ua hauj lwm.
Thaum lub sij hawm, lwm pab kiag li lawm uas khiav lag luam nkaus nyob rau lwm lub hauv paus ntsiab lus. Tsim schemes rau lub hauv paus ntawm high-power IGBT-transistors uas siv los tswj tus motors ntawm tsawg thiab nruab nrab lub hwj chim. Lawv maj mam hloov obsolete systems.