Ukusetshenziswa Okusha kwe-Inverter ku-Explosion-Proof Motor

Ukuze kufezwe ukusebenza kwejubane eliguquguqukayo lemoto, ubuchwepheshe be-inverter busetshenziswa kabanzi kumoto engaqhumi. Njengedivayisi, i-inverter ingaguqula ukunikezwa kwamandla emvamisa yamandla (50Hz noma 60Hz) ibe ukunikezwa kwamandla emvamisa ye-AC, ukuze kufezwe ukusebenza kwejubane eliguquguqukayo lemoto. Idivayisi ifaka isekethe yokulawula yokulawula isekethe eyinhloko; isekethe ye-Rectifier yokuguqula i-alternating current ibe yi-direct current; isekethe ye-DC intermediate isetshenziselwa ukushelela nokuhlunga umphumela wesekethe ye-rectifier; isekethe ye-Inverter, esetshenziselwa ukuguqula i-direct current ibe yi-alternating current. Kwamanye ama-frequency converters adinga ukwenza imisebenzi eminingi, kuyadingeka futhi ukuthi afakwe i-CPU yokubala i-torque kanye nesekethe ehambisanayo. Ngokushintsha imvamisa yokunikezwa kwamandla ye-stator winding yemoto, ukulawulwa kwejubane lemvamisa eliguquguqukayo kungafeza injongo yokulawulwa kwejubane.

I-Inverter Ngokwezindlela ezahlukene zokuhlukanisa, ingahlukaniswa ibe yi-inverter yohlobo lwe-voltage kanye ne-inverter yohlobo lwamanje, i-inverter yokulawula i-PAM, i-inverter yokulawula i-PWM kanye ne-inverter yokulawula i-PWM yemvamisa ephezulu, i-inverter yokulawula i-V/f, i-inverter yokulawula imvamisa yokushelela kanye ne-inverter yokulawula i-vector, i-inverter ejwayelekile, i-inverter ekhethekile esebenza kahle, i-inverter yemvamisa ephezulu, i-inverter yesigaba esisodwa kanye ne-inverter yesigaba ezintathu, njll.

Ku-frequency converter, i-VVVF ibhekisela ekushintsheni kwe-voltage kanye ne-frequency, kuyilapho i-CVCF ibhekisela ku-voltage engaguquki kanye ne-frequency engaguquki. Ku-power supply ye-AC esetshenziswa emazweni emhlabeni jikelele, kungakhathaliseki ukuthi kusemakhaya noma ezimbonini, i-voltage kanye ne-frequency ngokuvamile kuba yi-400V/50Hz noma i-200V/60Hz(50Hz). Idivayisi eguqula ugesi onjalo ube yi-voltage noma i-frequency variable power supply ibizwa ngokuthi "i-frequency converter". Ukuze ikhiqize ama-voltage nama-frequency aguqukile, idivayisi idinga kuqala ukuguqula i-alternating current ibe yi-direct current (DC).

Isiguquli semvamisa sisetshenziselwa ukulawula imoto futhi singashintsha kokubili i-voltage kanye nemvamisa. Ngokusho kokubonakaliswa kwesivinini semoto ye-AC, isivinini n silingana nemvamisa f, futhi isivinini semoto singalungiswa inqobo nje uma imvamisa f ishintshwa. Ngakho-ke, isiguquli semvamisa siqaphela ukulawulwa kwesivinini ngokushintsha imvamisa yokunikezwa kwamandla emoto, okuyindlela yokulawula isivinini esebenza kahle kakhulu kanye nokusebenza okuphezulu.

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

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

Imodi yokulawula i-voltage space vector (SVPWM);

Imodi yokulawula i-Vector (VC);

Imodi yokulawula i-torque eqondile (i-DTC);

I-matrix intersection - imodi yokulawula i-intersection, njll.

Ngenhla, kuchazwe ukusetshenziswa okusha kwe-inverter kumotha ovikela ukuqhuma. Ngobuchwepheshe be-inverter, ijubane lemotha lingalungiswa kalula, okuletha izixazululo zamandla ezisebenza kahle kakhulu kanye nokusebenza okuphezulu emkhakheni wezimboni.