Ukusetyenziswa okutsha kwe-Inverter kwi-Explosion-Proof Motor

Ukuqonda ukusebenza kwesantya esiguquguqukayo semoto, itekhnoloji ye-inverter isetyenziswa kakhulu kwiimoto ezinobungqina bokudubula.Njengesixhobo, i-inverter inokuguqula umbane wamandla ombane (50Hz okanye 60Hz) kwiintlobo ezahlukeneyo zobonelelo lwamandla e-AC, ukuze kufezekiswe ukusebenza kwesantya esiguquguqukayo semoto.Isixhobo sibandakanya isiphaluka solawulo sokulawula isiphaluka esiyintloko;Umjikelo wokulungisa ukuguqula umsinga otshintshayo ukuya ngqo ngoku;Umjikelo we-DC ophakathi usetyenziselwa ukugudisa kunye nokuhluza imveliso yesekethe yokulungisa;I-Inverter circuit, esetyenziselwa ukuguqula i-current ngqo kwi-alternating current.Kwezinye ii-frequency converters ezifuna ukwenza imisebenzi emininzi, kuyafuneka ukuba uxhotyiswe nge-CPU yokubala i-torque kunye nesekethe ehambelana nayo.Ngokutshintsha unikezelo lwamandla ombane we-stator winding ye-motor, ukulawulwa kwesantya esitshintshayo kunokuqonda injongo yolawulo lwesantya.

I-Inverter Ngokweendlela ezahlukeneyo zokuhlela, zinokwahlulwa zibe yi-inverter yohlobo lwe-voltage kunye ne-inverter yohlobo lwangoku, i-PAM yokulawula i-inverter, i-PWM yokulawula i-inverter kunye ne-high carrier frequency PWM control inverter, i-V / f control inverter, i-slip frequency control inverter kunye ne-inverter yokulawula i-vector, Jikelele. i-inverter, i-inverter ekhethekileyo yokusebenza okuphezulu, i-inverter ephezulu, i-inverter yesigaba esinye kunye ne-inverter yesigaba esithathu, njl.

Kwi-converter frequency, i-VVVF ibhekisa ekutshintsheni i-voltage kunye ne-frequency, ngelixa i-CVCF ibhekisa kwi-voltage engaguqukiyo kunye ne-frequency frequency.Kunikezelo lwamandla lwe-AC olusetyenziswa kumazwe kwihlabathi liphela, nokuba kusemakhaya okanye kwiifektri, amandla ombane kunye ne-frequency yi-400V/50Hz okanye i-200V/60Hz(50Hz).Isixhobo esiguqula unikezelo lwamandla olunjalo lube yivoltheji okanye i-frequency variable AC power supply ibizwa ngokuba yi-"frequency converter".Ukuze kuveliswe ii-voltages eziguquguqukayo kunye nee-frequencies, isixhobo kufuneka kuqala siguqule umsinga otshintshayo ukuya kumbane othe ngqo (DC).

Isiguquli esijikelezayo sisetyenziselwa ukulawula i-motor kwaye inokutshintsha zombini i-voltage kunye ne-frequency.Ngokwembonakalo yesantya semoto ye-AC, isantya n silingana nefrequency f, kwaye isantya semoto sinokuhlengahlengiswa nje ukuba i-frequency itshintshiwe.Ke ngoko, umguquli wefrequency uqonda ukulawulwa kwesantya ngokuguqula i-frequency ye-motor power supply, esebenza kakuhle kakhulu kunye nolawulo lwesantya esiphezulu.

Kuphuhliso lwabaguquli bamaxesha amaninzi, iindlela ezahlukeneyo zolawulo ziye zavela, kubandakanya:

Indlela yokulawula i-Sinusoidal pulse width modulation (SPWM), apho 1U/f=C;

Imo yokulawula indawo yombane (SVPWM);

Indlela yokulawula iVector (VC);

Indlela yokulawula itorque ngokuthe ngqo (DTC);

I-matrix intersection - imo yokulawula i-intersection, njl.

Ngaphezulu, usetyenziso oluyilayo lwe-inverter kwimoto yobungqina bokudubula kuchaziwe.Ngetekhnoloji ye-inverter, isantya semoto sinokuhlengahlengiswa ngokuguquguqukayo, ukuzisa ukusebenza kakuhle okuphezulu kunye nezisombululo zamandla aphezulu okusebenza kwindawo yeshishini.