Ukusetshenziswa Okusha Kwe-Inverter ku-Explosion-Proof Motor

Ukuze ubone ukusebenza kwejubane eliguquguqukayo lemoto, ubuchwepheshe be-inverter busetshenziswa kakhulu kumotho evikela ukuqhuma.Njengedivayisi, i-inverter ingaguqula ukunikezwa kwamandla okuvama kagesi (50Hz noma 60Hz) ibe yizinhlobonhlobo zamandla kagesi we-AC, ukuze kuzuzwe ukusebenza kwesivinini esiguquguqukayo senjini.Idivayisi ihlanganisa isifunda sokulawula sokulawula isifunda esikhulu;Isifunda sokulungisa kabusha sokuguqula i-alternating current ibe yamanje eqondile;Isifunda esimaphakathi se-DC sisetshenziselwa ukushelela nokuhlunga okukhiphayo kwesekethe yokulungisa;Isekethe ye-inverter, esetshenziselwa ukuguqula okwamanje okuqondile kube okwamanje okushintshanayo.Kwezinye iziguquli zefrikhwensi ezidinga ukwenza imisebenzi eminingi, kuyadingeka futhi ukuthi kufakwe i-CPU yokubala i-torque kanye nesekethe ehambisanayo.Ngokushintsha imvamisa yokuphakelwa kwamandla kwe-stator winding yenjini, ukulawulwa kwesivinini esishintshashintshayo kungathola inhloso yokulawula isivinini.

I-Inverter Ngokwezindlela ezihlukene zokuhlukanisa, ingahlukaniswa nge-inverter yohlobo lwe-voltage kanye ne-inverter yohlobo lwamanje, i-PAM control inverter, i-PWM control inverter kanye ne-high carrier frequency control inverter PWM, i-V/f control inverter, i-slip frequency control inverter kanye ne-vector control inverter, Okujwayelekile i-inverter, i-inverter ekhethekile yokusebenza okuphezulu, i-inverter ephezulu, i-inverter yesigaba esisodwa kanye ne-inverter yezigaba ezintathu, njll.

Ku-converter ye-frequency, i-VVVF ibhekisela ekushintsheni i-voltage nefrikhwensi, kuyilapho i-CVCF ibhekisela ku-voltage engaguquki kanye nemvamisa engaguquki.Kumandla kagesi e-AC asetshenziswa emazweni emhlabeni jikelele, kungakhathaliseki ukuthi kusemakhaya noma ezimbonini, amandla kagesi kanye nemvamisa kuvame ukuthi ngu-400V/50Hz noma 200V/60Hz(50Hz).Idivayisi eguqula ukunikezwa kwamandla okunjalo kube amandla kagesi we-voltage noma i-frequency AC ibizwa ngokuthi "i-frequency converter".Ukuze ukhiqize ama-voltage aguquguqukayo namaza, idivayisi kuqala idinga ukuguqula i-alternating current ibe yamanje eqondile (DC).

Isiguquli sefrikhwensi sisetshenziselwa ukulawula injini futhi singashintsha kokubili i-voltage kanye nemvamisa.Ngokokuvezwa kwesivinini semoto ye-AC, isivinini n silingana nefrikhwensi f, futhi isivinini semoto singashintshwa inqobo nje uma i-frequency f ishintshiwe.Ngakho-ke, isiguquli sefrequency sibona ukulawulwa kwesivinini ngokushintsha imvamisa yokunikezwa kwamandla emoto, okuyindlela esebenza kahle kakhulu nezindlela zokulawula isivinini sokusebenza okuphezulu.

Ekuthuthukisweni kwama-converter ama-frequency, izindlela ezahlukene zokulawula ziye zavela, okuhlanganisa:

Imodi yokulawula ye-Sinusoidal pulse width modulation (SPWM), lapho 1U/f=C;

Imodi yokulawula i-Volt space vector (SVPWM);

Imodi yokulawula i-Vector (VC);

Imodi yokulawula ithoshi eqondile (DTC);

Ukuphambana kwe-matrix - imodi yokulawula ukuhlangana, njll.

Ngenhla, kuchazwa ukusetshenziswa okusha kwe-inverter kunjini yokuvikela ukuqhuma.Ngobuchwepheshe be-inverter, ijubane lemoto lingashintshwa kalula, ilethe ukusebenza kahle okuphezulu kanye nezixazululo zamandla aphezulu okusebenza emkhakheni wezimboni.