Kusiyana pakati pa medium voltage soft starter ndi low voltage soft starter

Dera lalikulu la choyambira chofewa limagwiritsa ntchito thyristor.Mwa kusintha pang'onopang'ono njira yotsegulira ya thyristor, magetsi amakwezedwa kuti amalize ntchito yoyambira.Ichi ndiye mfundo yoyambira yoyambira yofewa.Pamsika woyambira wamagetsi otsika, pali zinthu zambiri, komachoyambira chofewa chapakati-voltagemankhwala akadali ochepa.

Mfundo yoyambira ya sing'anga-voltage soft starter ndi yofanana ndi ya low-voltage soft starter, koma pali kusiyana kotereku pakati pawo: (1) Medium-voltage soft starter imagwira ntchito m'malo othamanga kwambiri, insulationer ya zosiyanasiyana. zigawo zamagetsi ndi bwino, ndi odana kusokoneza mphamvu ya Chip chamagetsi ndi wamphamvu.Pamene achoyambira chofewa chapakati-voltageimapangidwa kukhala kabati yamagetsi, kapangidwe kazinthu zamagetsi ndi kulumikizana ndi sing'anga-voltage zofewa zoyambira ndi zida zina zamagetsi ndizofunikira kwambiri.(2) Sing'anga voteji zofewa sitata ali mkulu ntchito kulamulira pachimake, amene angathe kukonza siginecha panthawi yake ndiponso mofulumira.Chifukwa chake, chowongolera nthawi zambiri chimagwiritsa ntchito chip cha DSP chochita bwino kwambiri, m'malo mwa choyambira chofewa chochepa cha MCU pachimake.Dera lalikulu la otsika voteji zofewa sitata wapangidwa atatu inversely kufanana thyristors.Komabe, muzoyambira zofewa zotsika kwambiri, ma thyristors angapo amphamvu kwambiri m'magulu angapo amagwiritsidwa ntchito pakugawikana kwamagetsi chifukwa cha kukana kwamagetsi osakwanira a thyristor imodzi yayikulu-voltage.Koma magawo amachitidwe a thyristor aliyense samagwirizana kwathunthu.Kusagwirizana kwa magawo a thyristor kudzatsogolera ku kusagwirizana kwa nthawi yotsegulira thyristor, zomwe zidzatsogolera kuwonongeka kwa thyristor.Choncho, pakusankhidwa kwa thyristors, magawo a thyristor a gawo lililonse ayenera kukhala osagwirizana momwe angathere, ndipo zigawo za RC fyuluta dera la gawo lililonse ziyenera kukhala zogwirizana momwe zingathere.(3) Malo ogwirira ntchito a sing'anga-voltage zofewa zoyambira amatha kusokonezedwa ndi ma elekitiroma osiyanasiyana, kotero kufalikira kwa chizindikiro choyambitsa ndikotetezeka komanso chodalirika.

Mu choyambira chofewa chapakati-voltage, chizindikiro choyambitsa nthawi zambiri chimaperekedwa ndi fiber optical, yomwe imatha kupewa kusokonezedwa ndi ma elekitiroma.Pali njira ziwiri zotumizira zizindikiro kudzera mu ulusi wa kuwala: imodzi ndi yamitundu yambiri, ndipo ina ndi ya single-fiber.Mu multi-fiber mode, bolodi iliyonse yoyambitsa imakhala ndi fiber imodzi.Mumtundu wa fiber imodzi, pali ulusi umodzi wokha mu gawo lililonse, ndipo chizindikirocho chimatumizidwa ku bolodi limodzi lalikulu loyambitsa, ndiyeno limatumizidwa kumagulu ena oyambitsa nawo mu gawo lomwelo ndi bolodi lalikulu loyambitsa.Popeza kutayika kwa photoelectric kutayika kwa fiber iliyonse ya optical sikofanana, chingwe chimodzi chokha chimakhala chodalirika kusiyana ndi ma multi-optical fiber kuchokera pamalingaliro a trigger consistency.(4) Choyambira chofewa chapakati-voltage chili ndi zofunika kwambiri pakuzindikira ma siginecha kuposa choyambira chofewa chotsika.Pali kusokoneza kwakukulu kwa ma elekitiroma m'malo omwe choyambira chofewa cha sing'anga-voltage chili, ndi cholumikizira cholumikizira ndi vacuum circuit breaker chomwe chimagwiritsidwa ntchitochoyambira chofewa chapakati-voltagezidzatulutsa kusokoneza kwambiri kwa ma electromagnetic pakathyoka ndi kutseka.Choncho, chizindikiro chodziwika sichiyenera kusefedwa ndi hardware, komanso ndi mapulogalamu kuti achotse chizindikiro chosokoneza.(5) Woyambitsa wofewa akamaliza ntchito yoyambira, amayenera kusinthira kunjira yodutsa.Momwe mungasinthire bwino kupita kumayendedwe odutsa ndizovuta kwa woyambitsa wofewa.Momwe mungasankhire malo odutsa ndikofunika kwambiri.Poyambira podutsa, kugwedezeka kwapano kumakhala kolimba kwambiri, ngakhale pansi pamagetsi otsika, kumapangitsa kuti pakhale gawo la magawo atatu oyendetsa magetsi, kapena kuwononga wowononga dera.Chovulazacho chimakhala chachikulu pansi pazovuta kwambiri.Malo olambalala ndi mochedwa, ndipo motor jitter kwambiri, zomwe zimakhudza ntchito yachibadwa ya katundu.Chifukwa chake, gawo lodziwikiratu lazidziwitso zamtundu wa bypass ndilabwino kwambiri, ndipo kukonza pulogalamu kuyenera kukhala koyenera.