Isuzuma ku mikoreshereze ya Topology na Control ya Medium-High Voltage Power Electronic Transformers II

2 Amahitamo rusange y'imiterere ya PET

Topologiya za PET ziratandukanye cyane. Hashingiwe ku mubare w'ibyiciro byo guhindura ingufu, bishobora gushyirwa mu byiciro by'icyiciro kimwe, iby'icyiciro bibiri, n'iby'icyiciro bitatu [7]. Imiterere y'icyiciro kibiri irimo ifite bisi za DC zifite voltage nyinshi n'ifite voltage nkeya, nk'uko bigaragara ku Ishusho ya 1.

Mu ma PET yo mu cyiciro kimwe (Ishusho ya 1 (a)), ubwinshi buri hagati/hejuru Transformer yo kwitandukanya Ihuza AC/AC converters ku mpande zombi. AC/AC converter yo ku ruhande rw'ibanze ihindura voltage ya AC y'umurongo winjira muri voltage ya AC ifite frequency nyinshi, ihuzwa binyuze muri transformer hanyuma igasubizwa kuri voltage ya AC ifite frequency nyinshi na converter ya AC/AC yo ku ruhande rw'inyuma. PETs zo ku rwego rumwe zifite ibyiciro bike byo guhindura kandi zifite ibice bike, imikorere myiza cyane, n'ubucucike bwinshi bw'ingufu. Ariko, kutagira bisi ya DC bituma idakoreshwa mu miyoboro ya AC/DC, kandi kugenzura gukuraho ingufu ni ikintu kigoye.

PET zifite ibyiciro bibiri zifite bisi ya DC ku ruhande rufite voltage nyinshi cyangwa nkeya. Topiology ku ruhande rumwe rwa transformer yo kwitandukanya isa n'iya PET ifite icyiciro kimwe, mu gihe urundi ruhande ruhuza na bisi ya DC binyuze muri AC / DC cyangwa DC / AC circuits (Ishusho ya 1 (c) n'Ishusho ya 1 (d)). Hamwe n'imiyoboro ya DC ifite voltage nyinshi cyangwa nkeya, PET zifite ibyiciro bibiri zishobora guhuza na grids za DC zifite voltage yo hagati/yo hejuru ku ruhande rufite voltage nyinshi cyangwa kuri sisitemu ya PV/ububiko ku ruhande rufite voltage nkeya. Ariko, imbaraga zikora zihererekanywa n'abahindura ku mpande zombi za transformer yo kwitandukanya ziba zifite ubushishozi bwinshi ku bipimo byo kuzana imyanda ya transformer. Byongeye kandi, capacitor ya DC bus ihura n'ihindagurika rikomeye rya voltage-frequency ebyiri, kandi ihindagurika ry'umuvuduko wa converter ni rinini [7], bigatuma kugenzura bigorana.

PET z’icyiciro cya gatatu (Ishusho ya 1 (b)) zifite bisi za DC ku mpande zombi zifite voltage nyinshi n’iziciriritse. Umuyoboro wa AC ushyirwa kuri bisi ya DC ifite voltage nyinshi binyuze mu guhindura AC / DC, ugahindurwamo imiraba kare ifite voltage nyinshi, ugahuzwa n’uruhande rufite voltage nke binyuze mu gikoresho cyo guhindura amashanyarazi giciriritse/gikomeye, ugahindurwa na bisi ya DC ifite voltage nke, hanyuma ugahindurwa kuri voltage ya AC ifite voltage nke binyuze mu guhindura DC / AC. PET z’icyiciro cya gatatu zishobora guhuza na sisitemu za DC zifite voltage nyinshi n’iziciriritse. Kugenzura buri cyiciro cyo guhindura amashanyarazi byigenga, byoroshya gutandukanya no kugenzura indishyi. Ariko, ibyiciro byinshi byo guhindura amashanyarazi bivamo imiterere igoye cyane. Bitewe n’imiterere y’ibyiciro byinshi, imiterere ya PET y’icyiciro cya gatatu irushaho kugera ku buryo bworoshye ku ruhande rufite voltage nyinshi no ku ruhande rufite voltage nke, ihura n’ibikenewe mu gukoresha voltage nke. Bityo, imiterere y’icyiciro cya gatatu ni yo ikoreshwa cyane mu bushakashatsi no mu mikoreshereze ya PET ifite voltage nke/gikomeye.

Ku birebana na PET mu mikoreshereze y’amashanyarazi ari hagati/hasi, uruhande rw’amashanyarazi ari hasi rufite ingano ntoya y’amashanyarazi hamwe n’imbogamizi ntoya z’amashanyarazi. Ibinyuranye n’ibyo, icyiciro cyo gukosora ingufu nyinshi n’icyiciro cyo kwitandukanya hagati bihura n’ingano nini y’amashanyarazi, bigashyiraho ibisabwa bikomeye kuri topolojia n’ibikoresho. Ubushakashatsi buriho bwibanda ku byerekezo bibiri: ① Topolojia nshya n’uburyo bwo kugenzura PET z’amashanyarazi ari hagati/hasi hashingiwe ku bipimo by’amashanyarazi ariho; ② Topolojia za PET n’uburyo bwo kugenzura hakoreshejwe ibikoresho bishya bifite ingufu nyinshi, nka 10kV SiC [8, 9]. Ariko, ibikoresho bya SiC bifite ingufu nyinshi biracyari mu cyiciro cya laboratwari cyo gusesengura no guteza imbere, kandi ibikoresho by’ubucuruzi ntibiragera ku bisabwa kuri voltage. Kubwibyo, topolojia nyinshi za module cyangwa imwe zikoreshwa mu buryo butandukanye zikoreshwa mu guhaza ibisabwa kuri voltage nyinshi. Topolojia zisanzwe zigaragazwa ku Ishusho ya 2, yasesenguwe mu Gice cya 3.