Kuchokera pamalingaliro agalimoto, mota ya DC ndi mota ya DC yomwe imasintha mphamvu yamagetsi ya DC kukhala mphamvu zamakina, kapena jenereta ya DC yomwe imasintha mphamvu zamakina kukhala mphamvu yamagetsi ya DC;makina amagetsi ozungulira omwe kutulutsa kwake kapena kulowetsa kwake ndi mphamvu yamagetsi ya DC kumatchedwa DC motor, yomwe ndi injini yamphamvu A yomwe imazindikira kusinthana kwa mphamvu yamagetsi ya DC ndi mphamvu zamakina.Ikagwira ntchito ngati mota, ndi mota ya DC, yomwe imasintha mphamvu zamagetsi kukhala mphamvu zamakina;imagwira ntchito ngati jenereta, ndi jenereta ya DC, yomwe imasintha mphamvu zamakina kukhala mphamvu yamagetsi ya DC.

Kwa ma motors ozungulira, mafunde a ma harmonic kapena ma voltages a ma harmonic amabweretsa kuwonongeka kwina kwa ma stator windings, mabwalo ozungulira ndi ma cores achitsulo, zomwe zimapangitsa kuchepa kwa mphamvu yonse yosinthira mphamvu yamagalimoto.Harmonic yamakono imatha kuonjezera kumwa kwa mkuwa kwa injiniyo, chifukwa chake pansi pa katundu wovuta kwambiri, galimotoyo imapanga kutentha kwapafupi, kuonjezera kugwedezeka ndi phokoso, ndikuwonjezera kutentha, zomwe zimapangitsa kuti kukalamba kufulumizitse kwa wosanjikiza ndi kuchepetsa moyo wa zida.Mafani ena adafunsa, ma motors a AC adzakhala ndi ma harmonics, kaya ma DC motors alinso ndi vutoli?

Kukula ndi mayendedwe a alternating pakali pano amasintha nthawi ndi nthawi, ndipo kuchuluka kwapakati pamayendedwe amodzi ndi ziro, ndipo mawonekedwe a waveform nthawi zambiri amakhala sinusoidal, pomwe kulunjika sikumasintha nthawi ndi nthawi.Alternating current ndi maziko a maginito, omwe amapangidwa ndi makina.Njira iliyonse yosinthira magetsi iyenera kukhala ndi mphamvu yamagetsi, ndipo pali maginito apakati.Direct current ndi mankhwala, kaya photovoltaic kapena lead-acid, makamaka amasintha mphamvu zamagetsi kukhala mphamvu zamagetsi.

Kutembenuka kwa alternating current kupita ku chiwongolero chapano ndi kudzera mukukonzanso ndi kusefa kuti mupeze pulsating mwachindunji.Pakali pano amasinthidwa kukhala alternating current kudzera mu oscillation ndi inversion, ndipo mafunde osiyanasiyana a sine wave alternating amapezedwa.

Zifukwa zazikulu za kubadwa kwa ma harmonics zimaphatikizapo kusokonezeka kwa mphamvu zamakono komanso kubadwa kwa ma harmonics chifukwa cha mphamvu ya sinusoidal yomwe ikugwiritsidwa ntchito pa katundu wosagwirizana.Zonyamula zazikulu zopanda malire ndi UPS, kusintha magetsi, rectifier, frequency converter, inverter, etc. Ma harmonics a DC motor makamaka amachokera ku magetsi.Chifukwa cha ma harmonics a AC rectifier ndi zida zamagetsi za DC ndikuti zida zowongolera zimakhala ndi voteji ya valve.Ikakhala yocheperako kuposa voteji ya valve, yapano ndi zero.

Kuti apereke magetsi okhazikika a DC amtundu woterewu wamagetsi, zinthu zosungiramo mphamvu monga ma capacitor fyuluta ndi inductors zosefera zimawonjezedwa ku zida zowongolera kuti ziwonjezeke voteji ndikulimbikitsa kubadwa kwa ma harmonics.Pofuna kuwongolera mphamvu yamagetsi ndi magetsi amagetsi a DC, thyristor imagwiritsidwa ntchito pazida zowongolera, zomwe zimapangitsa kuti kuwonongeka kwa zida zotere kukhale koopsa, ndipo dongosolo la harmonic ndilochepa.

Ndi Jessica