Kudziwa mfundo 35 zosinthira izi kumatha kukweza ukadaulo wanu kukhala wochititsa chidwi!

Kudziwa mfundo 35 zosinthira izi kumatha kukweza ukadaulo wanu kukhala wochititsa chidwi! 

Mawu akuti VFD (Variable-frequency Drive) kwa inverter amawonetsa ntchito yake yowongolera ma mota a AC posintha ma frequency ndi matalikidwe a magetsi. Ku Asia, makamaka ku China ndi South Korea, mawu akuti VVVF (Variable Voltage Variable Frequency Inverter) adagwiritsidwa ntchito chifukwa cha chikoka cha Japan. VVVF imayimira Variable Voltage and Variable Frequency, kunena za kusintha kwa magetsi ndi ma frequency, pomwe CVCF (Constant Voltage and Constant Frequency) imawonetsa ma voltage osakhazikika komanso ma frequency.

Magwero amagetsi amagawidwa mu AC ndi DC. Mphamvu zambiri za DC zimachokera ku AC kudzera pakusintha, kukonza, ndi kusefa. Mphamvu ya AC imapanga pafupifupi 95% ya mphamvu zonse zogwiritsira ntchito mphamvu, ndi gawo limodzi ndi magawo atatu amagetsi a AC potsatira miyezo yamagetsi ndi ma frequency osiyanasiyana m'maiko osiyanasiyana. Mwachitsanzo, ku China, gawo limodzi la AC ndi 220V ndipo magawo atatu a AC ndi 380V, onse pa 50Hz. Inverter imatembenuza ma voliyumu okhazikika ndi ma frequency a AC kukhala ma voliyumu osinthika kapena ma frequency AC mphamvu. Izi zimaphatikizapo kukonza AC kupita ku DC ndikutembenuza DC kubwerera ku AC, ndi njira yomalizayo yomwe imatchedwa "inversion." Zipangizo zomwe zimasinthira DC kukhala ma frequency okhazikika ndi ma voltage AC amatchedwa ma inverters, pomwe omwe amalola ma frequency osinthika ndi ma voliyumu amatchedwa ma drive-frequency drives.

Kutulutsa kwa ma inverters kumatengera mafunde a sine, omwe amagwiritsidwa ntchito kwambiri pakuwongolera liwiro la magawo atatu aasynchronous motors, ndipo amadziwikanso kuti owongolera ma liwiro osinthasintha. Pazinthu zomwe zimafunikira mawonekedwe apamwamba kwambiri, monga zida zoyesera mu zida, mawonekedwe a waveform amayengedwa kuti apange mawonekedwe a sine wave, ndipo zida zotere zimatchedwa magetsi osinthika. Mphamvu zamagetsi zomwe zimasinthasintha nthawi zambiri zimakhala zokwera mtengo kuwirikiza 15 mpaka 20 kuposa ma drive osinthasintha. Chigawo chachikulu chomwe chimapanga magetsi osinthika kapena ma frequency mu zida zosinthira ndi "inverter," chifukwa chake chinthucho chimatchedwa "inverter." Ma inverters amagwiritsidwanso ntchito pazida zam'nyumba, monga ma air conditioner ndi nyali za fulorosenti. Pazowongolera zamagalimoto, ma inverters amatha kusintha ma voliyumu ndi ma frequency, pomwe omwe amagwiritsidwa ntchito pamagetsi a fulorosenti amawongolera ma frequency amagetsi. Zipangizo zamagalimoto zomwe zimatembenuza mphamvu ya batri (DC) kukhala AC zimagulitsidwanso pansi pa dzina loti "inverter." Mfundo yogwirira ntchito ya ma inverters imagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana, monga magetsi apakompyuta, pomwe ma inverters amapondereza ma voltage reverse, kusinthasintha kwafupipafupi, komanso kuzimitsa kwamagetsi nthawi yomweyo.

Kodi inverter ndi chiyani?

Inverter ndi chipangizo chomwe chimasintha mphamvu pafupipafupi kuti ikhale ma frequency ena pogwiritsa ntchito kusintha kwa zida za semiconductor. Zili ndi mabwalo akuluakulu awiri: dera lalikulu (rectifier module, electrolytic capacitor, ndi inverter module) ndi dera loyendetsa (kusintha bolodi lamagetsi ndi bolodi loyang'anira dera). CPU imayikidwa pa bolodi loyang'anira dera, ndi pulogalamu ya inverter yopangidwa mu CPU. Mapulogalamu a mtundu womwewo wa inverter nthawi zambiri amakhazikika, kupatula pa Sanjing inverter, omwe mapulogalamu ake amatha kusinthidwa malinga ndi zofunikira zogwiritsira ntchito.

Kodi pali kusiyana kotani pakati pa PWM ndi PAM?

PWM (Pulse Width Modulation) imasintha kukula kwa ma pulse mu masitima apamtunda molingana ndi dongosolo linalake kuti liwongolere zotuluka ndi mawonekedwe a mafunde. PAM (Pulse Amplitude Modulation) imasintha matalikidwe a ma pulse mu masitima apamtunda kuti athe kuwongolera zotuluka ndi mawonekedwe.

Kodi pali kusiyana kotani pakati pa ma voltage-mtundu ndi ma inverters apano?

Dera lalikulu la inverter limatha kugawidwa m'mitundu iwiri: ma voliyumu amtundu wamagetsi amasintha gwero lamagetsi a DC kukhala AC pogwiritsa ntchito ma capacitor a kusefa dera la DC, pomwe ma inverters apano amasintha gwero la DC kukhala AC pogwiritsa ntchito ma inductors a kusefa dera la DC.

Chifukwa chiyani ma voltage ndi ma frequency a inverter amasintha molingana?

Ma torque a induction motor amapangidwa ndi kulumikizana pakati pa maginito flux ndi rotor current. Pafupipafupi, ngati mphamvu yamagetsi imakhala yosasinthasintha komanso mafupipafupi achepetsedwa, maginito amatha kukhala ochulukirapo, zomwe zimapangitsa kuti maginito azungulira komanso kuwonongeka kwa injini. Chifukwa chake, ma voltage ndi ma frequency ayenera kusintha molingana. Njira yowongolerayi imagwiritsidwa ntchito kwambiri pama inverters opulumutsa mphamvu kwa mafani ndi mapampu.

Pamene induction motor imayendetsedwa ndi mphamvu yamagetsi yamagetsi ndi kutsika kwamagetsi, kumawonjezeka. Kwa ma motors oyendetsedwa ndi inverter, ngati voteji imatsika pomwe ma frequency achepa, kodi masiku ano amawonjezeka?

Pamene mafupipafupi amachepetsa (kuthamanga kochepa), panopa amawonjezeka kuti asunge mphamvu zomwezo. Komabe, pansi pa mikhalidwe ya torque yosalekeza, zamakono zimakhalabe zokhazikika.

Kodi zoyambira pakali pano ndi torque ndi ziti mukamagwiritsa ntchito mota yokhala ndi inverter?

Ndi inverter, pamene injini ikufulumizitsa, mafupipafupi ndi magetsi amachulukira mofanana, kuchepetsa kuyambira pano mpaka pansi pa 150% yapano (125% mpaka 200% kutengera chitsanzo). Chindunji pa intaneti kuyambira ndi mphamvu yama frequency ogwiritsira ntchito zimabweretsa kuyambitsa mafunde kasanu ndi kamodzi mpaka kasanu ndi kawiri kuposa momwe adavotera, zomwe zimayambitsa kupsinjika kwamakina ndi magetsi. Ma motors oyendetsedwa ndi ma inverter amayamba bwino (ndi nthawi yoyambira), kuyambira pano pa 1.2 mpaka 1.5 nthawi zomwe zidavotera pano ndikuyamba torque pa 70% mpaka 120% ya torque yovotera. Kwa ma inverters okhala ndi torque yowonjezera, ma torque oyambira amapitilira 100%, ndikupangitsa kuti katundu aziyamba.

Kodi V/f mode ndi chiyani?

Mafupipafupi amachepetsa, voteji V imachepanso mofanana. Ubale wapakati pa V ndi f umatsimikiziridwa potengera mawonekedwe agalimoto ndipo nthawi zambiri amasungidwa mu kukumbukira kwa controller (ROM). Makhalidwe angapo amatha kusankhidwa pogwiritsa ntchito masiwichi kapena potentiometers.

Kodi torque ya mota imasintha bwanji V ndi f zisinthidwa molingana?

Ngati magetsi achepetsedwa molingana ndi ma frequency, chizolowezi cha torque kutsika pa liwiro lotsika chimachitika chifukwa cha kuchepa kwa AC impedance komanso kusasinthika kwa DC. Kuti mulipire ndikukwaniritsa torque yokwanira yoyambira pama frequency otsika, magetsi otulutsa amayenera kuwonjezeka pang'ono. Malipiro awa, omwe amadziwika kuti torque boost, akhoza kupezedwa kudzera mu njira zosiyanasiyana, kuphatikizapo kusintha kokha, kusankha V / f mode, kapena potentiometer.

Ngati bukhuli likunena za liwiro la 60 ~ 6Hz (10: 1), kodi izi zikutanthauza kuti palibe mphamvu yotuluka pansi pa 6Hz?

Mphamvu imatha kutulutsabe pansi pa 6Hz. Komabe, poganizira kukwera kwa kutentha kwa injini ndikuyambira ma torque, ma frequency ocheperako amayikidwa mozungulira 6Hz kupewa kutentha kwambiri ndikusunga ma torque ovotera. Ma frequency enieni otulutsa (maulendo oyambira) a inverter amasiyanasiyana ndi mtundu, nthawi zambiri kuyambira 0.5Hz mpaka 3Hz.

Kodi ndizotheka kukhalabe ndi torque yokhazikika ndi kuphatikiza kwa injini yokhazikika pamwamba pa 60Hz?

Nthawi zambiri, sizingatheke. Pamwamba pa 60Hz (kapena 50Hz m'njira zina), magetsi amakhalabe osasintha, zomwe zimapangitsa kuti pakhale mawonekedwe amphamvu nthawi zonse. Pamene torque yosalekeza ikufunika pa liwiro lalikulu, kusankha mosamala ma mota ndi ma inverter ndikofunikira.

Kodi open-loop control ndi chiyani?

Pamene chojambulira liwiro (PG) chimayikidwa pagalimoto ndipo liwiro lenileni limabwezeretsedwa ku chipangizo chowongolera kuti chiwongoleredwe, chimatchedwa "kotseka-loop". Kugwira ntchito popanda mayankho a PG kumatchedwa "open-loop" control. Ma inverter-purpose-purpose nthawi zambiri amagwiritsa ntchito kuwongolera kotseguka, ngakhale mitundu ina imapereka mayankho a PG ngati njira. Speed ​​​​sensorless shut-loop control imayerekeza kuthamanga kwenikweni kwagalimoto kutengera masamu amtundu wa flux, kupanga bwino njira yotsekera yotsekeka yokhala ndi sensor yothamanga.

Kodi chimachitika ndi chiyani pakakhala kusiyana pakati pa liwiro lenileni ndi liwiro lokhazikitsidwa?

Potsegula-loop control, ngakhale inverter itulutsa ma frequency okhazikika, kuthamanga kwagalimoto kumatha kusiyanasiyana mkati mwamtundu wotsetsereka (1% mpaka 5%) pansi pa katundu. Pamapulogalamu omwe amafunikira kulondola kwamayendedwe othamanga kwambiri komanso kugwira ntchito moyandikira-liwiro ngakhale kusintha kwa katundu, ma inverter okhala ndi mayankho a PG (omwe alipo ngati njira) angagwiritsidwe ntchito.

Kodi kulondola mwachangu kungawongoleredwe pogwiritsa ntchito mota yokhala ndi mayankho a PG?

Ma inverters okhala ndi mayankho a PG amapereka kulondola kwachangu. Komabe, kulondola kwenikweni kwa liwiro kumatengera kulondola kwa PG komanso kusintha kwa ma frequency a inverter.

Kodi anti-stall function ndi chiyani?

Ngati nthawi yothamangitsira yokhazikitsidwa ndi yochepa kwambiri, ma frequency a inverter amatha kusintha mwachangu kuposa liwiro la mota (ma frequency amagetsi amagetsi), kupangitsa kuti inverter ipitirire komanso kugwetsa, zomwe zimayimitsa ntchito. Izi zimatchedwa stalling. Kuti mupewe kuyimilira ndikusunga magwiridwe antchito, inverter imayang'anira pakali pano ndikusintha ma frequency. Panthawi yothamanga, ngati panopa imakhala yochuluka, kuthamanga kwachangu kumachepetsedwa. Zomwezo zimagwiranso ntchito ku deceleration. Pamodzi, njirazi zimapanga ntchito yotsutsa-stall.

Kodi ma inverters amatanthauza chiyani omwe amalola makonda osiyanasiyana kuti apititse patsogolo komanso kuchepetsa nthawiomwe amagwiritsa ntchito mawonekedwe ofanana?

Ma inverters omwe amalola kuthamangitsidwa kosiyana ndi kutsika kwa nthawi ndi oyenera kugwiritsa ntchito zomwe zimafuna kuthamangitsidwa pang'onopang'ono komanso kutsika pang'onopang'ono, kapena zida zamakina ang'onoang'ono okhala ndi zofunikira zolimba zopangira. Mosiyana ndi izi, pazogwiritsa ntchito ngati ma fan drive pomwe kuthamangitsa ndi kutsika nthawi zonse kumakhala kwautali, nthawi yofananira yofulumizitsa ndi kutsika ndi yoyenera.

Kodi regenerative braking ndi chiyani?

Pamene lamulo pafupipafupi yafupika pa ntchito galimoto, galimoto kusintha kwa asynchronous jenereta mode ndi ntchito ngati ananyema. Njirayi imadziwika kuti regenerative (magetsi) braking.

Kodi mphamvu zokulirapo zamabuleki zingatheke?

Mphamvu zosinthidwanso kuchokera ku mota zimasungidwa mu inverter's filter capacitor. Chifukwa cha kuchuluka kwa ma capacitor komanso kuchepa kwa ma voliyumu, mphamvu yobwezeretsanso ma inverter-cholinga chonse imakhala pafupifupi 10% mpaka 20% ya torque yovotera. Ndi mayunitsi opangira mabuleki, izi zitha kuonjezedwa mpaka 50% mpaka 100%.

Kodi ntchito zoteteza za inverter ndi ziti?

Ntchito zodzitetezera zitha kugawidwa motere:

(1) Kukonza zodziwikiratu zomwe sizili bwino, monga kupewa kutsekeka kopitilira muyeso komanso kupewa kubwezanso kopitilira muyeso.

(2) Kuletsa ma siginecha owongolera a PWM kuti apatse mphamvu ma semiconductors akazindikira zolakwika, zomwe zimapangitsa kuti injiniyo iziyimitsa yokha. Zitsanzo ndi kutsekeka kopitilira muyeso, kutsekeka kwamagetsi owonjezera, chitetezo choziziritsa cha semiconductor kutenthedwa, ndi chitetezo champhamvu nthawi yomweyo.

Chifukwa chiyani ntchito yoteteza inverter imagwira ntchito mukamagwiritsa ntchito clutch kuti muzinyamula mosalekeza?

Pamene clutch imagwirizanitsa katunduyo, galimotoyo imasintha mofulumira kuchoka ku malo opanda katundu kupita kumalo otsetsereka kwambiri. Kukwera kwamphamvu komwe kumapangitsa kuti inverter iyende chifukwa cha kupitilira, kuyimitsa ntchito.

Chifukwa chiyani inverter imayima panthawi yogwira ntchito pomwe ma motors akulu ayamba pamalo omwewo?

Panthawi yoyambitsa injini, mphamvu yamagetsi imafanana ndi mphamvu ya injini, zomwe zimapangitsa kuti magetsi awonongeke kumbali ya stator ya transformer. Kwa ma motors akulu, kutsika kwamagetsi kumeneku kumatha kukhudza kwambiri zida zina zolumikizidwa ndi thiransifoma yomweyo. The inverter angatanthauzire molakwika izi ngati kuperewera kwa mphamvu kapena kutaya mphamvu nthawi yomweyo, kuyambitsa ntchito yake yoteteza (IPE) ndikuyimitsa.

Kodi inverter resolution ndi chiyani ndipo chifukwa chiyani ili yofunika?

Kwa ma inverters olamulidwa ndi digito, ngakhale kulamula pafupipafupi ndi chizindikiro cha analogi, ma frequency omwe amaperekedwa amaperekedwa m'njira zosiyanasiyana. Gawo laling'ono kwambiri pamasitepe awa limatchedwa inverter resolution. Nthawi zambiri, kusintha kwa inverter kumachokera ku 0.015Hz mpaka 0.5Hz. Mwachitsanzo, ndi 0.5Hz resolution, ma frequency omwe ali pamwamba pa 23Hz amatha kusinthidwa kukhala 23.5Hz kapena 24.0Hz, zomwe zimapangitsa kuti ma motor ayende bwino. Izi zitha kukhala zovuta pamapulogalamu ngati kuwongolera kopitilira muyeso. Zikatero, kusamvana kozungulira 0.015Hz kumatsimikizira kuti injini yamapole anayi, sitepe iliyonse imagwirizana ndi zosakwana 1r / min, kupereka kusinthasintha kokwanira. Mitundu ina ya inverter imasiyanitsa pakati pa kusamvana kwa lamulo ndi kutulutsa.

Kodi pali zoletsa zilizonse pamayendedwe oyika inverter?

Mapangidwe a inverter amaganizira kuzizira kwazinthu zamkati ndi kumbuyo. Kuyang'ana kwa chipangizocho ndikofunikira kwambiri pakupanga mpweya wabwino. Kwa ma inverters okhala ndi ma panel okwera kapena okhoma pakhoma, kuyika koyima pamalo otalika kumalimbikitsidwa.

Kodi ndizotheka kulumikiza molunjika mota ku inverter yokhazikika popanda kugwiritsa ntchito choyambira chofewa?

Pafupipafupi kwambiri, izi ndizotheka. Komabe, ngati ma frequency okhazikitsidwa ndi okwera, mikhalidwe imafanana ndi intaneti yolunjika kuyambira ndi mphamvu yama frequency ogwiritsira ntchito. Izi zitha kupangitsa kuti mafunde oyambira ochulukirapo (kasanu ndi kamodzi mpaka kasanu ndi kawiri pakali pano), ndipo popeza inverter idzayenda kuti itetezedwe mopitilira muyeso, mota imalephera kuyambitsa.

Ndi njira ziti zomwe muyenera kusamala mukamagwiritsa ntchito injini yopitilira 60Hz?

Mukamagwira ntchito pamwamba pa 60Hz, ganizirani izi:

(1) Onetsetsani kuti zida zamakina ndi zofananira zimatha kupirira kuthamanga kotere (mphamvu zamakina, phokoso, kugwedezeka, etc.).

(2) Galimoto imalowa mumtundu wokhazikika wamagetsi, ndipo torque yake yotulutsa iyenera kupititsa patsogolo ntchito (kwa mafani ndi mapampu, mphamvu yotulutsa shaft imawonjezeka ndi kyubu ya liwiro, kotero ngakhale kuwonjezeka pang'ono kumafuna chidwi).

(3) Kukhala ndi moyo kungakhudzidwe ndipo kuyenera kuganiziridwa bwino.

(4) Kwa ma motors apakati mpaka akulu, makamaka ma mota awiri, funsani wopanga musanagwire ntchito pamwamba pa 60Hz.

Kodi ma inverters amatha kuyendetsa ma gear motors?

Kutengera kapangidwe ka chochepetsera komanso njira yothira mafuta, pali zinthu zingapo zomwe zingagwiritsidwe ntchito. Nthawi zambiri, zida zamagetsi zimatha kupirira mpaka 70 ~ 80Hz. Ndi mafuta opaka mafuta, ntchito yotsika kwambiri imatha kuwononga magiya.

Kodi ma inverters amayendetsa ma motors a single phase? Kodi angagwiritse ntchito mphamvu ya gawo limodzi?

Nthawi zambiri, sizingatheke. Kwa ma motors agawo limodzi okhala ndi owongolera liwiro kapena makina oyambira, kuchepetsa liwiro pansi pa malo ogwirira ntchito kumatha kutenthetsa mapiritsi othandizira. Kwa mitundu ya capacitor-start kapena capacitor-run, kuphulika kwa capacitor kumatha kuchitika. Ma inverters nthawi zambiri amafunikira magetsi a magawo atatu, ngakhale mitundu ina yaying'ono imatha kugwira ntchito pagawo limodzi.

Kodi inverter imadziwononga yokha mphamvu yochuluka bwanji?

Kugwiritsa ntchito mphamvu kumadalira mtundu wa inverter, mawonekedwe ogwiritsira ntchito, komanso kuchuluka kwa ntchito. Ndizovuta kutchula mfundo zenizeni. Komabe, mphamvu ya inverter pansi pa 60Hz ndi pafupifupi 94% mpaka 96%, yomwe ingagwiritsidwe ntchito kuyerekezera zotayika. Kwa ma inverters okhala ndi ma braking opangidwanso (mwachitsanzo, mndandanda wa FR-K), kuganizira kutayika kwa mabuleki kumawonjezera kugwiritsa ntchito mphamvu, chinthu chofunikira kuzindikira pakupanga gulu lowongolera.

Chifukwa chiyani ntchito yopitilira sikungachitike pamitundu yonse ya 6 ~ 60Hz?

Ma motors ambiri amagwiritsa ntchito mafani akunja pamtengo kapena masamba pa mphete ya rotor kuti aziziziritsa. Kuthamanga kocheperako kumachepetsa kuzizira bwino, kulepheretsa injiniyo kupirira kutentha komweko komwe kumathamanga kwambiri. Kuti muchite izi, chepetsani ma torque othamanga kwambiri, gwiritsani ntchito inverter yokulirapo ndi kuphatikiza ma mota, kapena gwiritsani ntchito mota yapadera.

Kodi muyenera kusamala ndi chiyani mukamagwiritsa ntchito mota yokhala ndi brake?

Dongosolo lolimbikitsa mabuleki liyenera kuyendetsedwa kuchokera kumbali yolowera ya inverter. Ngati brake ikugwira ntchito pomwe inverter imatulutsa mphamvu, overcurrent ikhoza kuyambitsa kuzimitsa. Chifukwa chake, onetsetsani kuti brake ikugwira ntchito pokhapokha inverter itasiya kutulutsa mphamvu.

Chifukwa chiyani mota siyamba ikagwiritsa ntchito inverter kuyendetsa mota yokhala ndi ma capacitor owongolera mphamvu?

Ma inverter apano amayenda mumagetsi owonjezera mphamvu. Kuthamanga kwapano kungayambitse overcurrent (OCT) mu inverter, kulepheretsa kuyambitsa. Kuti muchite izi, chotsani ma capacitor ndikuyendetsa injini. Kuti muwonjezere mphamvu yamagetsi, kuyika riyakitala ya AC kumbali yakulowetsa ya inverter ndikothandiza.

Kodi moyo wa inverter ndi wotani?

Ngakhale ma inverters ndi zida zosasunthika, amakhala ndi zinthu zomwe zimatha kudyedwa ngati ma capacitor a fyuluta ndi mafani ozizira. Ndi kukonza pafupipafupi magawowa, inverter imatha kupitilira zaka khumi.

Kodi fani yoziziritsa imayendetsedwa bwanji mu inverter, ndipo chimachitika ndi chiyani ikalephera?

Ma inverters ena ang'onoang'ono alibe mafani ozizira. Kwa zitsanzo zomwe zili ndi mafani, mpweya umatuluka kuchokera pansi mpaka pamwamba. Mukayika inverter, pewani kuyika zida zomwe zimalepheretsa kutulutsa mpweya ndi utsi pamwamba ndi pansi pa unit. Osayika zinthu zomwe sizimva kutentha pamwamba pa inverter. Kulephera kwa mafani kumatetezedwa pozindikira kuyimitsidwa kwa fan kapena kutenthedwa kwa fani yakuzizira.

Kodi moyo wa ma capacitor osefera ungadziwike bwanji?

Ma capacitor osefera, omwe amagwiritsidwa ntchito ngati ma capacitor, pang'onopang'ono amataya mphamvu yawo yamagetsi pakapita nthawi. Nthawi zonse kuyeza mphamvu ya electrostatic, ndipo ganizirani moyo wa capacitor utatha ikafika 85% ya mphamvu yovotera.

Kodi pali zoletsa zilizonse pakukhazikitsa njira ya inverter?

Ma inverters nthawi zambiri amakhala mkati mwa mapanelo. Komabe, mapanelo otsekedwa kwathunthu ndi ochulukirapo, owononga malo, komanso okwera mtengo. Njira zochepetsera zikuphatikizapo:

(1) Kupanga mapanelo ofunikira kuziziritsa kwa zida zenizeni.

(2) Kuchulukitsa malo ozizira pogwiritsa ntchito masinki otentha a aluminiyamu, zipsepse, ndi zoziziritsira.

(3) Kugwiritsa ntchito mapaipi otentha.

Kuphatikiza apo, ma inverter okhala ndi mbali zowonekera kumbuyo apangidwa.

Kodi mphamvu ya inverter iyenera kusankhidwa bwanji kuti iwonjezere liwiro la lamba wotumizira mpaka 80Hz?

Kugwiritsa ntchito mphamvu kwa malamba otumizira kumayenderana ndi liwiro. Kuti mugwiritse ntchito pa 80Hz, zonse zosinthika ndi mphamvu zamagalimoto ziyenera kukulitsidwa molingana ndi 80Hz/50Hz, mwachitsanzo, kuwonjezereka kwa 60%.

Zodzitetezera pakukonza ndi kuyang'anira:

(1) Mutatha kuzimitsa mphamvu yolowera, dikirani osachepera mphindi 5 musanayambe kuyendera (onetsetsani kuti chizindikiro cha LED chazimitsidwa) kuti mupewe kugwedezeka kwa magetsi.

(2) Kusamalira, kuyang'anira, ndi kukonzanso chigawocho chiyenera kuchitidwa ndi ogwira ntchito oyenerera. Chotsani zinthu zonse zachitsulo (mawotchi, zibangili, ndi zina zotero) musanayambe ntchito ndikugwiritsa ntchito zida zotsekera.

(3) Musasinthe inverter mosasamala kuti muteteze kugwedezeka kwa magetsi ndi kuwonongeka kwa zinthu.

(4) Musanayambe kutumikira inverter, kutsimikizira athandizira voteji. Kulumikiza magetsi a 380V ku 220V-class inverter kungayambitse kuwonongeka (capacitor, varistor, module explosion, etc.).

Ma inverters, opangidwa makamaka ndi zinthu za semiconductor, amafunika kuyang'aniridwa tsiku ndi tsiku kuti ateteze malo ogwirira ntchito, monga kutentha, chinyezi, fumbi, ndi kugwedezeka, komanso kupewa zolakwika zomwe zimadza chifukwa cha kuperewera kwa moyo.

Zoyendera:

(1) Kuyang'ana tsiku ndi tsiku: Onetsetsani kuti inverter imagwira ntchito momwe ikufunikira. Gwiritsani ntchito voltmeter kuti muwone zolowera ndi zotulutsa pomwe inverter ikugwira ntchito.

(2) Kuyang'ana kwakanthawi: Yang'anani madera onse omwe amapezeka pokhapokha pomwe inverter yatsekedwa.

(3) Kusintha kwa gawo: Kutalika kwa gawo kumakhudzidwa kwambiri ndi mikhalidwe yoyika.