Ongororo pamusoro peTopology uye Mashandisirwo Ekutonga eMedium-High Voltage Power Electronic Transformers II

2 Sarudzo yeChimiro Chese chePET

Matoporiji ePET anosiyana zvakanyanya. Zvichienderana nehuwandu hwematanho ekushandura simba, anogona kuiswa muzvikamu zveimwe-nhanho, zviviri-nhanho, uye zvitatu-nhanho [7]. Maumbirwo ezvikamu zviviri anosanganisira ayo ane mabhazi eDC ane voltage yakakwira uye yakaderera, sezvakaratidzwa muMufananidzo 1.

MuPET dzechikamu chimwe chete (Mufananidzo 1(a)), frequency yepakati/yakakwira Transformer yekuzviparadzanisa inobatanidza maAC/AC converters kumativi ese. Iyo primary-side AC/AC converter inochinja input line-frequency AC voltage kuita high-frequency AC voltage, iyo inosanganiswa kuburikidza netransformer yozoshandurwa kudzokera ku line-frequency AC voltage ne secondary-side AC/AC converter. MaPET echikamu chimwe chete ane matanho mashoma ekushandura uye zvikamu zvishoma, kushanda kwepamusoro, uye simba rakawanda. Zvisinei, kushaikwa kweDC bus kunoita kuti asakodzere ma hybrid AC/DC grids, uye kutonga kwesimba kwakaoma.

MaPET ane nhanho mbiri ane bhazi reDC kudivi rine voltage yakakwira kana yakaderera. Topology iri kudivi rimwe re transformer inoshanduka yakafanana neye PET ine nhanho imwe chete, nepo rimwe divi richibatana nebhazi reDC kuburikidza neAC/DC kana DC/AC circuits (Mufananidzo 1(c) uye Mufananidzo 1(d)). Nema DC link ane voltage yakakwira kana yakaderera, maPET ane nhanho mbiri anogona kubatana ne medium/high-voltage DC grids kudivi rine voltage yakakwira kana ku PV/storage systems kudivi rine voltage yakaderera. Zvisinei, simba rinoitwa nevanoshandura magetsi kumativi ese e transformer inoshanduka zvakanyanya ne transformer leakage inductance parameters. Pamusoro pezvo, DC bus capacitor inosangana nekuchinja-chinja kukuru kwe voltage ye double-line-frequency, uye kuchinja-chinja kwe converter current kwakakura [7], zvichiita kuti kutonga kuve kwakaoma.

MaPET ane matanho matatu (Mufananidzo 1(b)) ane mabhazi eDC kumativi ese ari maviri ane voltage yakakwira neyakaderera. Kupinza line-frequency AC current kunogadziriswa kuita bhazi reDC rine voltage yakakwira kuburikidza neAC/DC conversion, kuchinjwa kuita mafungu epamusoro-soro, kusanganiswa nedivi relow-voltage kuburikidza ne transformer yepakati/yakakwira, kuchigadziriswa kuita bhazi reDC rine voltage yakakwira, uye pakupedzisira kuchinjwa kuita line-frequency AC voltage kuburikidza neDC/AC conversion. MaPET ane matanho matatu anogona kubatana kune ese ari maviri ane voltage yakakwira neyakaderera. Kudzora nhanho yega yega yekushandura kwakazvimirira, zvichiita kuti zvive nyore kupatsanurana uye kudzora muripo. Zvisinei, matanho akawanda ekushandura anokonzera chimiro chakaoma kwazvo. Nekuda kwekugadzirwa kwematanho akawanda, matanho matatu ePET anogadzirisa zviri nyore kuyerera padivi rehigh-voltage uye kuenderana nedivi relow-voltage, zvichisangana nezvinodiwa zvekushandisa voltage yepakati/yakakwira. Saka, matanho matatu ndiwo anonyanya kushandiswa mukutsvaga nekushandisa PET yepakati/yakakwira voltage.

Kune maPET mukushandiswa kwemagetsi epakati/akakwira, divi remagetsi akaderera rine mazinga emagetsi akaderera ane zvirambidzo zvishoma zvemagetsi emidziyo. Kusiyana neizvi, danho rekugadzirisa magetsi epamusoro uye danho repakati rekupatsanura rinotarisana nemazinga emagetsi akakwira, zvichiisa zvinodiwa zvakanyanya pamatanho edunhu nemidziyo. Tsvagiridzo iripo inotarisa mativi maviri: ① Magadzirirwo matsva uye nzira dzekudzora maPET emagetsi epakati/akakwira zvichibva pane zvagara zviripo; ② Magadzirirwo ePET uye zvidzoreso zvinoshandisa michina mitsva yemagetsi epamusoro, senge 10kV SiC zvishandiso [8, 9]. Zvisinei, michina yeSiC ine voltage yakakwira ichiri muchikamu cheR&D cherabhoritari, uye michina yekutengeserana haisati yakwanisa kusangana nezvinodiwa zvemagetsi. Naizvozvo, magadzirirwo emagetsi akawanda-module cascaded kana single-module multilevel anoshandiswa kusangana nezvinodiwa zvemagetsi ekupinda akakwira. Magadzirirwo akajairika anoratidzwa muMufananidzo 2, akaongororwa muChikamu 3.