I-Harmonic Penomena ezinhlelweni zikagesi: Izimbangela, Imiphumela kanye Nezingozi

Harmonicsziyinto ebucayi kodwa evame ukunganakwa ezinhlelweni zikagesi. Bamelela ukuhlanekezela kwe-wavelform ye-sinusoidal efanelekile yamandla kagesi noma wamanje, okwenzeka kumafrikhwensi akhona ama-Integer Multiples of Frequency esiyisisekelo (isb., 50 Hz noma 60 hz). Ngenkathi i-harmonics ikhona ezinhlelweni zamandla zanamuhla, ukuba khona kwazo okungalawulwa kungaholela emiphumeleni enzima yokusebenza kanye nezezimali. Lo mbhalo uzohlola izimbangela, imiphumela yabo kanye nobungozi.

Yini ebangela ukuvumelana?

Harmonicsngokuyinhloko ukusuka kumadivayisi we-nonlinear omgwaqo lapho okwamanje akuvumelanise ne-waverage ye-voltage ye-sinusoidal. Izibonelo ezijwayelekile zifaka:

I-Frequer Frequency Drives (VFFS) kuma-motor wezimboni, ama-switch-Mode Power Supplies (e.g., amakhompyutha, amaseva we-Inverters (ama-Solar / Wind Systems), izinsizakusebenza ze-Solar / Wind), neziteshi zokushaja izimoto zikagesi. Le mithwalo iphazamisa ukuhamba okubushelelezi kwamanje, kukhiqiza ama-waveforms ahlanekezelwe. Isibonelo, i-VFD ingahle idonsele njengamanje emaphepheni amafushane kunokuba i-wave eqhubekayo ye-sine, okuholela ekuhlolweni okufana ne-3RD (150 Hz), 5th Hz), noma i-750 hz).

Yini imiphumela ye-harmonics?  

I-Harmonics yehlisa ikhwalithi yamandla futhi ibeke izindleko ezibalulekile ezifihliwe kwingqalasizinda yamandla:  

I-Harmonics ibangela ukulahleka kwamandla kanye nezindleko ezandisiwe. Isibonelo, imisinga ye-armonic-oda yesihlanu ingaholela ekulahlekelweni kwamandla angu-15% ezinhlelweni zokusabalalisa (Ucwaningo loMnyango Wezamandla). Lokhu kusebenze kahle kungaholela kwizikweletu eziphezulu zikagesi.  

Kungadala ukulimala kwemishini futhi kunciphise isikhathi sokuphila isikhathi eside, njengoba ama-armonic currivents akhiqize ama-Eddy currents kanye nokulahleka kwe-hysteresis, okuholele ekushiseni ngokweqile. Abaguquli abasebenza ezindaweni ezinama-armonic burmonic bangahluleka 30-50% ngokushesha kunesiphi isikhathi sokuphila kwabo. Ngokwengeziwe, ama-harmonics angadala ukubumbana, okuholela ekugcwalisweni ngokweqile kweCapacitor kanye nokuqhuma okungaba khona noma imililo. Ngaphezu kwalokho, ezinhlelweni zesigaba ezintathu, i-harmonics yesithathu (3rd, 9th, njll.) Ukuqongelela kulayini wokungathathi hlangothi, okubangela ukweqile.  

I-Harmonics nayo ingadala ukuphazamiseka okusebenzayo, ikakhulukazi emishini ebucayi efana namadivaysi ezokwelapha, amathuluzi welabhoratri, noma amaseva wesikhungo sedatha ancike emandleni ahlanzekile. Ukuhlanekezela kwamandla kagesi okubangelwa i-harmonics kungahle kube nokuhluleka kwemishini, inkohliso yedatha, noma isikhathi esingahleliwe.

Izingozi zokuthobela kanye nokuphepha ezihambisana ne-harmonics nazo zibucayi. Edlula imikhawulo enobumba echazwe kumazinga anjenge-IEEE 519-2022 kungahle kube nenhlawulo yokulawula. Ngokwengeziwe, ukushisa ngokweqile kungadala izingozi zomlilo kanye nezingozi zokuphepha.

Njengomenzi ochwepheshe kanye nomhlinzeki, sinikezela ngemikhiqizo esezingeni eliphakeme. Uma unentshisekelo ngemikhiqizo yethu noma unemibuzo, sicela ukhululekeXhumana nathi.