Kungani ukunikezwa kwamandla kwe-inverter kuphazamisa?

Okokuqala nje, kufanele sazi ukuthi ukunikezwa kwamandla kwe-inverter kusetshenziselwa ukushintsha imvamisa. I-inverter ihlanganisa i-rectifier circuit kanye ne-inverter circuit. Amandla okufaka e-AC aguqulwa abe yi-VC Voltage ngumjikelezo oshelelayo wesekethe umjikelezo.

Khona-ke, I-DC voltage iguqulwa ibe yi-volse voltages yobubanzi obuhlukile (ibizwa nge-Pulse Width Modulant Vertage, I-PWM) ngokusebenzisa i-inverter. Umnyombo ukusebenzisa le voltage ye-PWM ukushayela imoto ukulungisa i-torque nesivinini semoto.
Lo mgomo osebenzayo ubangela izinhlobo ezintathu ezilandelayo zokuphazanyiswa kwe-electromagnetic:

1. Ukuphazanyiswa Kwe-Harmony
Umjikelezo wokulungisa uzokhiqiza ama-harmonic currents. Le mvume ye-harmonic idala ukwehla kwamandla kagesi kulo lonke lokuvinjwa kohlelo lwamandla, kuholele e-waveform ye-waveform ehlanekezelwe. Amathuluzi amaningi angaphazamiseka ngaleli voltage yokuhlanekezela. Ukuhlanekezela kwe-voltage ejwayelekile kuphezulu kwegagasi le-sine. phathaza. Lapho i-harmonic yamanje ihlala njalo, Ukuhlanekezela kwamandla kagesi kubaluleke kakhulu lapho kuhlinzekwa njengamanje okubuthakathaka. Lokhu kuphazamiseka kuziveza njengokuphazamiseka kwemishini esebenzisa igridi yamandla efanayo, Kungakhathalekile ibanga phakathi kwemishini kanye ne-inverter.

2. I-Radio Frequency Ukudluliselwa Ukukhishwa Kwemininingwane
Ngoba i-voltage yomthwalo idonswa, Ukuguqulwa okuvela kugridi nakho kudonswa kusuka kugridi. Le nto eshisiwe iqukethe izingxenye eziningi eziningi kakhulu zemvamisa ephezulu, okuholela ekuphazanyisweni imvamisa yomsakazo. Ukuphazanyiswa akuhlangene ngalutho nebanga phakathi kwensimbi nokunikezwa kwamandla angerter.

3. Ukuphazanyiswa Kwemisebe yeRadio Frequency
Ukuphazanyiswa kwe-radio frequency radiation kuqhamuka kwezintambo zokufaka kanye nokukhishwa kwemali yokuhlinzekwa kwamandla e-inverter. Lapho kukhona ukufinyeleleka imvamisa yomsakazo kumakhekhe wokufaka kanye nokukhipha kokuhlinzekwa kwamandla e-inverter, Njengoba ikhebula lilingana ne-antenna, Imisebe ye-Electromagnetic Wave izokwenziwa ngokungenakuphikiswa futhi okuphazanyiswa kwemisebe kuzokwenzeka.

I-PWM Voltage edluliselwe kwikhebula elikhiphayo le-inverter liyaceba nezinto ezivame kakhulu, okuzokhiqiza imisebe ye-electromagnetic wave futhi kubangele ukuphazamiseka kwemisebe. Isimo sokuphazanyiswa okubanzi ngukuthi lapho amanye amadivaysi kagesi asondelene ne-inverter, Into yokuphazanyiswa iba sína.