Capacitors za DC muri Inverters za Photovoltaic

Ingufu zikomoka ku mirasire y'izuba zizagira uruhare runini mu ikoreshwa ry'ingufu ku isi mu gihe cya vuba, atari ukubera gusa ko zizasimbura zimwe mu ngufu zisanzwe, ahubwo no kuba isoko nyamukuru y'ingufu zitangwa ku isi.

Inverters za photovoltaic ni inverters zihindura voltage ya DC ihinduka ikorwa na panels z'izuba za photovoltaic (PV) zikayihinduramo umuyoboro w'amashanyarazi uhindagurika (AC), ushobora kongera gukoreshwa muri sisitemu yo kohereza ibicuruzwa cyangwa ugakoreshwa muri sisitemu idakoresha amashanyarazi. Kubera ko inverters muri rusange zikoreshwa mu buryo bwo hanze kandi zigasaba imikorere yizewe igihe kirekire no kudakorerwa isuku nke, abakoresha n'abashushanya bafite ibisabwa bikomeye cyane ku bwiza no kwizerwa ku bice bikoreshwa muri ibi bikoresho. Nk'umutwaro n'inkunga mu guhindura ingufu, capacitors za filime zigira uruhare runini mu bice byose bya inverters za photovoltaic. Iyo zidatoranijwe neza, zizagira ingaruka mbi ku ituze n'ubuzima bw'ibikoresho.

Kugira ngo ukoreshe circuit ya inverter, reba urugero rw'ikoreshwa mu ishusho iri hepfo:

Uruhare rwa capacitor ya DC-link:

1) Muri circuit ya inverter, voltage isohoka ya rectifier iratunganywa cyane cyane kandi igasukurwa;

2) Kuramo umuyoboro wa pulsating wihuta cyane usabwa na inverter iva kuri "DC-Link", ikakumira gukora voltage yihuta cyane kuri impedance ya "DC-Link", kandi igumisha ihindagurika ry'amashanyarazi kuri DC bus mu rugero rwemewe;

3) Kurinda ko voltage irenga urugero n'ingufu zirenze urugero za "DC-Link" bigira ingaruka kuri IGBT.

Bityo rero, ibisabwa kuri capacitors:

1) Menya neza ko ingufu zihagije zo kwihanganira

2) Ubushobozi buhagije

3) Ubushobozi buhagije bwo gukoresha umuriro mwinshi, ESR nkeya uko bishoboka kose

4) Hakenewe imiterere myiza y'inshuro, ESL nkeya uko bishoboka kose

5) Kuraho ubushyuhe bwinshi bwo hanze n'ubushuhe bwinshi bwo gushyiramo

Wuxi CRE New Energy Technology Co., Ltd. imaze igihe kinini yibanda ku ikoreshwa rya capacitors za firime mu byuma bikoresha ingufu. Igamije imiterere ikarishye yo gukoresha muri inverters za photovoltaic, ishingiye ku ikoranabuhanga rya firime rya CRE rishyigikiwe na DC, ikoresha Polypropylene Dielectric idatakaza cyane kandi idashyuha cyane, yateguye kandi ikora urukurikirane rwa capacitors za firime zifite ubushyuhe bwinshi n'ubukonje bwinshi, ESR nke (ikoreshwa ry'ubushyuhe buke), ubwizerwe bwinshi kandi ziramba.

Muri byo, imikorere ya capacitor ya bisi ya DMJ-PS DC ni iyi ikurikira: