Dain-gun galai shai ai ladat(PCS) ngu ai gaw battery hte power grid (sh) AC load lapran na matut mahkai lam re. Dai gaw battery n-gun shinggyin ai system a pru wa ai power quality hte dynamic arawn alai ni hpe dawdan ya ai sha n-ga, battery a shimlum lam hte asak hpe mung grai hkra machyi shangun ai. Circuit topology hte transformer hkrang hpe madung tawn nna, PCS a madung amyu ni hpe power-frequency step-up amyu hte high{4}}voltage direct-matut mahkai lam amyu ngu nna garan mai ai, sumla hta madun da ai hte maren.
Ya aten hta, n-gun rawng ai battery clusters ni a voltage level gaw 1500V hta n jan ai sha, charge a masa (SOC) hta hkan nna, galai shai ai lam langai ngai nga ai. Dai majaw, n bung ai n-gun grid (sh) load ni a voltage ra kadawn ai lam ni hpe hkan sa na matu, PCS (Power Conversion System) a AC maga de n-gun galai shai ai jak hpe law law lang gram lajang da ai. Ndai hku galaw ai gaw AC voltage hpe jat ya ai (sh) hkang ai lam hpe lu la ai sha n-ga, off-grid system ni hta 3-phase mali-wire system hpe mung galaw nna, langai sha lang ai lit ni hpe jaw ya lu ai. Dai hta n-ga, n-gun shinggyin ai ladat hpe makawp maga ai lam hte electromagnetic htuk manu ai lam hpe pat shingdang ai lam hpe grau kaja hkra galaw ya ai.
Stage jahpan hpe madung tawn nna, power frequency step-up ngu ai PCS hpe langai sha re ai hte lahkawng lang ngu nna garan mai ai.
Power-frequency step-up langai -stage PCS gaw n-gun ja ai hte asan sha re ai hkrang hpe jaw ya ai; rai tim, battery n-gun n law ai hte voltage lata ai hta n-gun n law ai majaw tsin-yam hkrum nga ai. Dai hta n-ga, PCS a DC maga de na short-circuit hkrat sum ai majaw, battery pack kata na current kaba hpe loi loi hte shabyin ya lu ai majaw, grai kaba ai hkrit tsang hpa byin wa chye ai. Single-stage PCS hpe mung, pru wa ai voltage madang hpe madung tawn nna, lahkawng-madang, masum-madang, shing nrai, madang law law ngu nna garan mai ai. Level ni law wa ai hte maren, PCS a DC voltage level hte output power quality hpe grau nna gram lajang lu na re, sumla hta mu lu ai.
222 hta madun da ai hte maren, power-frequency boost-type two-stage PCS hpe, battery shang ai shara kaw, lahkawng maga de DC/DC galai shai ai ladat hte gram lajang da ai, dai gaw battery pack a atsam hpe jat ya nna, battery a n-gun law law hpe hkang lu ai atsam hpe jat ya ai. Raitim, manu kaba ai, hkang zing ai lam grai yak ai, n-gun n law ai. DC/DC converter a n bung ai hkrang masa ni hpe madung tawn nna, -stage PCS lahkawng hpe n- garan ginhka ai hte garan ginhka ai amyu ngu nna garan mai ai. Ndai garan tawn da ai lahkawng-stage PCS gaw voltage galai shai ai ratio hpe grau nna jat wa shangun lu nna, battery voltage hpe grau dam lada ai hku galai shai lu ai atsam nga ai, raitim, kaba ai-capacity garan tawn da ai high-boost ratio bidirectional DC/DC converter a hkrang shapraw ai lam gaw, hpaji masa hta grai kaba ai mayak mahkak ni hpe shabyin ya nga ai. Madung yak hkak ai lam ni gaw, n-gun kaba ai -voltage galai shai ai jak hpe hkrang shapraw ai, system hpe n-gun shayawm ai, phase-shift (sh) series resonant soft switching galaw ai, n-gun kaba ai density hpe hkrang shapraw ai lam ni lawm ai.
Lithium-ion battery ni a matu, n-gun kaba ai n-gun shinggyin ai jak ni hta lang ai, n-gun n-gun (state of charge) (SOC) gaw 15% kaw nna 85% lapran rai yang, pru wa ai n-gun gaw grai n shai ai. Dai majaw, ya aten hta nye a mungdan hta lang nga ai n-gun kaba -hkum hkrang n-gun shinggyin ai ladat law malawng gaw, -stage langai sha re ai n-gun galai shai ai ladat (PCS) hpe jai lang ma ai. Raitim, DC voltage 1500V de du wa ai hte maren, masum-madang topology hkrang ni hpe grau grau hkap la na re. 1500V battery n-gun hpe shinggyin tawn da ai ladat gaw ra ai lagaw n-gun hte switch box hte DC cable zawn re ai wan jak ni hpe jai lang ai lam hpe shayawm ya ai majaw, system a manu hpe loi mi shayawm ya lu ai. Raitim, battery hte PCS lapran na tsan gang ai lam kadun ai majaw, DC transmission sum ai lam hpe kaba ai-scale photovoltaic wan jak ni hta mu lu ai daram shayawm ya lu ai lam n nga ai. Dai hta n-ga, DC circuit breaker hte DC contactor zawn re ai daw ni hpe grau nna galaw lu ai atsam ra sharawng ai lam ni hpe tawn da ya ai. DC circuit a wan n-gun shimlam hte makawp maga ai hkrang gaw ndai masa hpe galaw sa wa ai hta madung manghkang langai rai nga ai.
Ultra-kaba ai-battery n-gun mahkawng da ai wan jak ni hpe jai lang lu na matu, battery pack law law hpe parallel hku matut mahkai ai lam hpe koi lu na matu, n-gun frequency transformer ni a majaw byin wa ai sum machyi lam ni hpe koi lu na matu hte manu jahpu hpe shayawm lu na matu, high-voltage direct{CS with P lam madun ai. Power frequency step-up PCS hte maren, high-voltage direct-matut da ai PCS hpe mung, n-gun galai shai ai lahkam ni a jahpan hte maren, langai -stage hte lahkawng-stage topologies hku nna garan mai ai.
Cascaded single-stage PCS gaw, n-gun kaba ai n-gun galai shai ai n-gun n-gun n-nga ai sha, n-gun kaba ai n-gun grid hte hkrak matut mahkai lu ai majaw, ultra-kaba ai-n-gun n-gun shinggyin ai ladat ni hpe gawgap na matu htuk manu ai. Cascaded structure gaw multi-level pru ai lam hpe lu la ai, langai hkrai a module ni hta n law ai galai shai ai frequency ni hta pyi n law ai pru ai voltage harmonics ni hpe hkam la lu ai, dai hku nna galai shai ai sum ai lam ni hpe shayawm ya lu ai. Raitim, cascaded single-stage PCS gaw DC maga de shada da shingjawng hkat ra ai majaw, n-gun n law ai n-gun dat ni a matu shingjawng hkat ai lam grai law ai majaw, laksan hkrang shapraw ra ai. Battery pack langai hte langai hte ga lapran hta common-mode n-gun lam ni nga ai, common-mode n-gun hpe pat shingdang na matu hparan ladat ni ra nga ai.
Battery pack ni a charge hte discharge galaw ai n-gun ni hta second-harmonic ripple lawm ai majaw, battery a n-gun n-gun lam hpe n kaja ai hku hkra machyi shangun nna, manu jahpu hpe mung jat shangun ai. Cascaded langai sha nga ai PCS ni hpe madung hku nna H-bridge cascaded hte modular multilevel converter (MMC) cascaded amyu hku nna garan mai ai, sumla hta madun da ai hte maren.
Yawng hpe yu yang, n-gun kaba ai {-voltage direct-matut mahkai ai PCS (Power Conversion System) gaw, n-gun kaba ai n-gun hpe shinggyin la lu ai ladat ni a majaw byin pru wa ai shimlam hte akyu rawng ai lam ni hpe hparan na matu ahkyak ai hparan ladat langai rai nga ai. Raitim, battery pack hte garan tawn da ai DC/DC converter lahkawng yan hta insulation ra kadawn ai lam grai law ai majaw, shi hpe grau nna hkap la ai hte jai lang ai lam hpe pat shingdang da ai. Dai hta n-ga, ultra-large capacity battery system ni hpe myit maju jung ai hku shinggyin tawn da ai, wan n-gun matut mahkai ai lam, shim lum ai hkrang shapraw ai lam ni hta mung mayak mahkak ni nga ai.