Ma hope o 10 mau makahiki o ka hoʻomohala ʻana, ua hoʻokumu ʻia nā kaʻa uila uila hou i kahi hōʻiliʻili ʻenehana.Nui ka ʻike i ka hoʻolālā ʻana i nā ʻāpana kaʻa uila a me ke koho ʻana a me ka hoʻohālikelike ʻana i nā ʻāpana.I waena o lākou, pono e noʻonoʻo ka hoʻolālā ʻana o ka resistor precharge i ke kaapuni precharge i nā kūlana a me nā kūlana hana.ʻO ke koho ʻana o ka resistor precharge e hoʻoholo i ka wikiwiki o ka manawa precharge o ke kaʻa, ka nui o ka wahi i noho ʻia e kapale pale kau mua, a me ka palekana, ka hilinaʻi, a me ka paʻa o ka uila uila kiʻekiʻe o ke kaʻa.
ʻO ka mea pale precharge he mea pale e hoʻopiʻi mālie i ka capacitor i ka wā mua o ka mana kiʻekiʻe-voltage o ke kaʻa.Inā ʻaʻohe precharge resistor, ʻoi aku ka nui o ka hoʻouka ʻana i kēia manawa e wāwahi i ka capacitor.Hoʻopili pololei ʻia ka uila uila kiʻekiʻe i ka capacitor, ʻo ia ka mea like me kahi kaapuni pōkole koke.ʻO ka nui o ke kaapuni pōkole e hoʻopōʻino i nā ʻāpana uila kiʻekiʻe.
Elua mau wahinā mea pale muahoʻohana ʻia i nā kaʻa uila waena a me ke kiʻekiʻe o nā kaʻa uila, ʻo ia hoʻi ke kaʻapuni precharge kaʻa kaʻa a me ka kaapuni precharge kaapuni kiʻekiʻe.Aia kahi capacitor nui i loko o ka mea hoʻokele kaʻa (inverter circuit), pono e hoʻopaʻa mua ʻia e kāohi i ka capacitor e hoʻopiʻi nei i kēia manawa.ʻO nā mea hana kiʻekiʻe-voltage maʻamau e komo pū me DCDC (DC converter), OBC (on-board charger), PDU (high-voltage power distribution box), ka ʻaila ʻaila, ka paila wai, AC (air conditioning compressor) a me nā mea ʻē aʻe, a aia pū kekahi. nā capacitors nui i loko o nā ʻāpana., no laila pono ke kau mua.
Nā mea pale muaR, manawa precharge T, a koi precharge capacitor C, ka precharge manawa maʻamau 3 a 5 manawa RC, a me ka precharge manawa maʻamau milliseconds.No laila, hiki ke hoʻopau koke ʻia ka precharging a ʻaʻole e pili i ka hoʻolālā mana mana o ke kaʻa.ʻO ke kūlana no ka hoʻoholo ʻana inā ua hoʻopau ʻia ka precharging inā hiki i ka 90% o ka uila uila mana (ʻo ia ka hihia).I ke koho ʻana i kahi mea pale precharge, pono e noʻonoʻo ʻia nā ʻano penei: ka uila uila uila, ka mea hoʻopili i helu ʻia i kēia manawa, ka waiwai C capacitor, ka wela ambient kiʻekiʻe, ka piʻi ʻana o ka mahana o ka resistor, ka uila ma hope o ka precharge, ka manawa precharge, ka waiwai kūʻē insulation, ka ikehu pulse.ʻO ke kumu helu helu no ka ikehu pulse he hapalua ia o ka huahana o ka huinahalike o ka puʻe uila a me ka helu capacitance C waiwai.Inā he puʻupuʻu hoʻomau, a laila, ʻo ka huina o ka ikehu ka huina o ka ikaika o nā pulupulu a pau.
