Ngokuthuthuka okusheshayo kobuchwepheshe besimanje be-elekthronikhi kanye nobuchwepheshe bokulawula amakhompiyutha, uguquko lwezobuchwepheshe lokushayela ugesi luye lwakhuthazwa.Ukulawula isivinini se-Ac esikhundleni sokulawula isivinini se-DC, ukulawulwa kwedijithali kwekhompuyutha esikhundleni sokulawula kwe-analogi sekuphenduke inkambiso yentuthuko.Ukulawulwa kwesivinini sokuguqulwa kwefrikhwensi ye-Ac motor kuyindlela eyinhloko yokonga amandla, ukuthuthukisa inqubo yokukhiqiza, ukuthuthukisa ikhwalithi yomkhiqizo, nokuthuthukisa indawo yokusebenza.Ukulawulwa kwejubane lokuvama okuguquguqukayongokusebenza kahle kwayo okuphezulu, isici samandla aphezulu, kanye nokulawulwa kwejubane okuhle kakhulu nokusebenza kwamabhuleki nezinye izinzuzo eziningi kubhekwa njengomthetho wejubane othembisa kakhulu.
Okwangaphambilinihigh-voltage inverter, eyakhiwe i-thyristor rectifier, inverter ye-thyristor namanye amadivaysi, inokushiyeka okuningi, ama-harmonics amakhulu, futhi inomthelela kugridi yamandla kanye ne-motor.Eminyakeni yamuva, kuye kwathuthukiswa amanye amadivaysi amasha azoshintsha lesi simo, njenge-IGBT, IGCT, SGCT njalonjalo.Isiguquli samandla kagesi aphezulu esakhiwe ngawo sisebenza kahle kakhulu futhi singabona isiguquli se-PWM ngisho nokulungiswa kwe-PWM.Akuwona nje ama-harmonics amancane, kodwa futhi isici samandla sithuthukiswa kakhulu
Ubuchwepheshe bokulawula isivinini sokuguqulwa kwe-ac frequency iyinhlanganisela kagesi oqinile futhi obuthakathaka, ubuchwepheshe bokuhlanganiswa komshini nogesi, hhayi kuphela ukubhekana nokuguqulwa kwamandla amakhulu (ukulungisa, i-inverter), kodwa futhi ukubhekana nokuqoqwa kolwazi, ukuguqulwa nokudluliswa. , ngakho-ke kufanele ihlukaniswe ibe amandla futhi ilawule izingxenye ezimbili.Owokuqala kufanele axazulule izinkinga zobuchwepheshe ezihlobene ne-voltage ephezulu kanye namandla aphezulu, futhi lokhu okulandelayo kufanele kuxazulule izinkinga zesofthiwe ne-hardware yokulawula.Ngakho-ke, ubuchwepheshe bokulawula isivinini sokuguqulwa kwe-voltage ephezulu yesikhathi esizayo nabo buzothuthukiswa kulezi zici ezimbili, ukusebenza kwabo okuyinhloko yilokhu:
(1) Ihigh voltage variable frequencyizothuthukisa isiqondiso samandla aphezulu, i-miniaturization ne-lightweight.
(2) IphezuluI-voltage frequency frequency driveizothuthuka ngezindlela ezimbili: idivaysi eqondile yamandla kagesi aphezulu kanye ne-multiple superposition (uchungechunge lwedivayisi nochungechunge lwamayunithi).
(3) Amadivayisi amasha we-semiconductor yamandla ane-voltage ephezulu namandla aphezulu azosetshenziswa kuwohigh voltage variable frequency drive
(3) Kulesi sigaba, i-IGBT, IGCT, SGCT isazodlala indima enkulu, i-SCR, i-GTO izophuma emakethe ye-inverter.
(4) Ukusetshenziswa kokulawula i-vector, ukulawulwa kwe-flux kanye nobuchwepheshe bokulawula i-torque eqondile ngaphandle kwenzwa yesivinini kuzovuthwa.
(5) Bona ngokugcwele i-digitalization kanye ne-automation: ipharamitha yokuzibekela ubuchwepheshe;Ukucubungula ubuchwepheshe bokuzenzela;Ubuchwepheshe bokuzibona iphutha.
(6) Ukusetshenziswa kwemishini engu-32-bit MCU, DSP kanye ne-ASIC, ukuze kuzuzwe ukunemba okuphezulu kanye ne-inverter enemisebenzi eminingi.
(7) Izimboni ezihambisanayo ezisekelayo zibheke ekuqeqesheni nasekuthuthukisweni ngezinga elikhulu, futhi ukuhlukana komphakathi kwabasebenzi kuzoba sobala kakhulu.
Isikhathi sokuthumela: Oct-30-2023