Umahluko ophambili phakathi kweenjini ze-synchronous eziveliswa ngu LT SIMO Motorkwaye eqhelekileyoiimotor ezingalungelelanisiweyo TDMK Motorekusebenzeni kukuba xa i-motor synchronous isebenza, i-angle phakathi kwe-armature voltage vector kunye ne-rotor pole isikhundla kufuneka ibe phakathi koluhlu oluthile, ngaphandle koko inkqubo iya kulahlekelwa inyathelo. Ke ngoko, xa i-synchronous motor iguqulwa rhoqo kwaye isantya silawulwa, le angle kufuneka isoloko ilawulwa ukuze itshintshe ngaphakathi koluhlu oluvumelekileyo. Lo ngowona mahluko uphambili phakathi kwe-synchronous motor frequency conversion kunye ne-asynchronous motor frequency conversion. Oku kulandelayo kuza kwazisa ngokufutshane ubunzima ekuhlangabezwene nabo kwii-synchronous motor fumgaqo wesantya soguqulo olufunekayoinkqubo kunye nezisombululo ezihambelanayo zesixhobo sokuguqula i-maxf frequency:
I-synchronous motor ukuqala kunye nenkqubo yokuvuselela
Ngokuqhelekileyo kukho iindlela ezimbini zokuqalisa i-asynchronous motor: enye kukuvuyisa kuqala kwaye uqale ngokuhambelanayo; enye kukuqala ngokungafaniyo kwaye emva koko uchwayite kwi-polarity efanayo. Ukuqala koguqulo lwamaza okwenziwa kweemoto ezilungelelanisiweyo, uvuselelo lusetyenziswa kuqala kwaye uqalo olungqameneyo lwamkelwa, kodwa isigwebo sendawo yerotor engachanekanga sihlala sikhokelela kukusilela ukuqalisa kwemoto. Kulawulo lwesantya soguqulo lweemoto ezilungelelanisiweyo, kulula ukwamkela ukuqala kwe-asynchronous kunye nokuya phambili kwe-polarity. Ke ngoko, isixhobo sokuguqula i-maxf frequency senza i-asynchronous soft iqala kwi-synchronous motor ukufezekisa i-torque elinganisiweyo, kwaye iqala i-synchronous motor ukuya malunga ne-8hz yokuqhubela phambili i-polarity. Ubungakanani obuthile bochulumanco kunye nokuphindaphindwa kovuselelo kunokulungiswa kwaye kumiselwe ngokwezihlandlo ezahlukeneyo zosetyenziso. Ngeli xesha, emva kwe-engile phakathi kwe-motor rotor magnetic field kunye ne-stator magnetic field inomlinganiselo omncinci we-oscillation emanzi, i-motor rotor magnetic pole itsalwa ngokuthembekileyo yi-stator magnetic pole, kunye ne-synchronous motor ingena kwi-synchronous operation state. I-inverter ngokuthe ngcembe ikhawuleza ukuya kwifrikhwensi enikiweyo ngokokukhawulezisa okusetwe kwangaphambili. Ngeli xesha, i-engile phakathi kwe-synchronous motor armature voltage vector kunye ne-rotor magnetic pole isikhundla ngokuthe ngcembe inyuka ukuya kwixabiso elithile elingaguqukiyo, kunye ne-motor rotor magnetic pole ngokuthe ngcembe ikhawuleza ukuya kwisantya esifunekayo phantsi komtsalane we-stator magnetic field, kunye ne-synchronous motor start process igqityiwe.