Farkokin Voltage Source Inverter da Current Source Inverter
Mai inverter na voltage (VSI) da inverter na current (CSI) suna nufin abubuwa biyu na cikin inverters, wadanda suka shirya don taka karamin direct current (DC) zuwa alternating current (AC). Idan hakan, suke samun yawan yadda ake amfani da su da kuma abubuwan da suke amfani da su a wurare da mutane.
Ilimi na electronics mai kyau ta karkara a kan bincike da kuma amfani da abubuwan da suke zama power converters - abubuwan da ke kawo waɗannan yanayi ko circuits mai elektronika wadanda suke zama rarrabe da sabon form of electrical energy. Wannan converters suna kategorizawa a cikin abubuwan da dama, tushen AC-to-AC, AC-to-DC, DC-to-AC, da DC-to-DC, kwararren da suka fitowa da al'amuran da suke amfani da su.
Inverter shine converter mai kyau na power wanda ya shirya don taka karamin direct current (DC) zuwa alternating current (AC). Input na DC ya shiga da tsari, musamman da voltage mai ci gaba, inda output na AC zai iya canzawa amplitude da frequency masu ma'ana ga abubuwan da aka fi sani. Wannan inganci ya ba inverter da muhimmanci a kan gina backup power daga batteries, taimakawa high-voltage direct current (HVDC) transmission, da kuma variable frequency drives (VFDs) wadanda suke yin canza speed na motor da kuma kawo control output frequency.
Inverter ba taka shi ne kuma don gina power, amma don zama electrical energy daga babban form zuwa sabon form. Yana da transistors kamar MOSFETs ko IGBTs don taimakawa wannan conversion.
Akwai abubuwan biyu na primary na inverters: voltage source inverters (VSIs) da current source inverters (CSIs), kwararren da suka da muhimmanci da batun.
Voltage Source Inverter (VSI)
A VSI an shirya haka cewa input na DC voltage yana da tsari, ba za su yi lafiya ba idan ana yi load variations. Idan input na current yana zama wajen adawa idan akwai load, DC source yana da internal impedance mai tsabta. Wannan halaye ya ba VSIs da muhimmanci a wurare da resistive ko lightly inductive loads, kamar lighting systems, AC motors, da heaters.
An kula large capacitor a parallel da input na DC source don taimaka da constant voltage, tare da tsari mai tsabta idan input na DC current yana adawa idan akwai load changes. VSIs suna amfani da MOSFETs ko IGBTs da feedback diodes (freewheeling diodes), wadanda suke da muhimmanci a kan reactive power flow a inductive circuits.
Current Source Inverter (CSI)
A CSI, input na DC current yana da tsari (tambaya DC-link current), inda voltage yana zama wajen adawa idan akwai load changes. DC source yana da high internal impedance, wanda ya ba CSIs da muhimmanci a wurare da highly inductive loads kamar induction motors. Duk da haka, CSIs suna da muhimmanci wajen overloading da kuma short-circuiting, wanda yana ba su da advantage a operational setups mai kyau.
An kula large inductor a series da DC source don taimaka da constant current source, saboda inductor yana da resistance wajen adawa current flow. Wannan design ya ba a CSI, input na current yana da tsari idan voltage yana zama wajen adawa idan akwai load variations.
CSIs suna amfani da thyristors a configuration da su da kuma ba su da freewheeling diodes, wanda ke sa shi duka VSIs a component design da kuma operational mechanics.
Main Differences Between Voltage Source and Current Source Inverter
Tafelar tana bayyana key comparisons bayan VSIs da CSIs:
