Ka hopena o ka mana ma nā kukui LED

ʻO ka mana mana kahi mea nui o nā kukui alakaʻi, ʻaʻohe meanā kukui LED hiki ke hoʻouka hou ʻiaa i ʻole nā ​​kukui LED maloʻo. No laila e hoʻomaopopo hou aku kākou i ke ʻano o ka power factor.

1, Mana
Hōʻike ka mana kumu i ka hiki o kaKukui poʻo LEDe hoʻopuka i ka mana hana. ʻO ka mana ke ana o ka wikiwiki o ka hoʻoili ʻana o ka ikehu, a ma nā kaapuni DC ʻo ia ka huahana o ka voltage V a me ke au A. I loko o ka ʻōnaehana AC, ʻoi aku ka paʻakikī: ke kaapuni nei kekahi au AC i loko o ka ukana, i kapa ʻia ʻo ke au reactance a i ʻole ke au harmonic, ka mea e hoʻolilo ai i ka mana ʻike ʻia (voltage Volt e nā Amps o kēia manawa) i ʻoi aku ka nui ma mua o ka mana maoli. ʻO ka ʻokoʻa ma waena o ka mana ʻike ʻia a me ka mana maoli e alakaʻi ai i ka mana mana, a ua like ka mana mana me ka lakio o ka mana maoli i ka mana ʻike ʻia. No laila, ua like ka mana maoli i loko o ka ʻōnaehana AC me ka mana hilinaʻi i hoʻonui ʻia i ka mana mana.
ʻO ia hoʻi: mana kumu = mana maoli / mana ʻike ʻia. ʻO ka mana kumu wale nō o ka ukana linear e like me ka mea hoʻomehana uila a me ke kukui he 1. ʻO ka ʻokoʻa ma waena o ka mana maoli a me ka mana ʻike ʻia o nā lako he nui he mea liʻiliʻi loa a he mea ʻole, ʻoiai ʻo ka ʻokoʻa ma waena o nā lako capacitive e like me nā kukui he nui loa a he mea nui.

2. Mana i ʻike ʻia
Mana hana: ka huahana o ke anakahi AC a me ke au AC. Me ke ʻano hana penei: S=UI. Ma kahi o S ka mana hoʻopuka helu ʻia ma VA (volt-ampere); ʻO U ka mana hoʻopuka helu ʻia ma V, e like me 220V, 380V, a pēlā aku; ʻO I ka mana hoʻopuka helu ʻia ma A. ʻO ka mana ʻike ʻia he ʻelua ʻāpana: ka mana hana (P) a me ka mana hana (Q). Pili ka mana hana i ka ʻāpana o ka hana i hana pololei ʻia. No ka laʻana, ka mālamalama, ka hoʻohuli ʻana o ka motika, ka hana ʻana o ke kaapuni uila. No ka mea ua lilo kēia mana i wela, hiki ke ʻike pololei ʻia e ka poʻe, no laila he manaʻo kuhihewa kekahi poʻe, ʻo ia hoʻi, ka mana hana e like me ka mana ʻike ʻia, ʻo wai ka mea ʻike i ka mana hana he ʻāpana wale nō ia o
ʻO ka mana ʻike ʻia, me ke ʻano: P = Scos θ = UIcosθ =UIF. Ma kahi o P ka mana hana ma W (watts); Ua kapa ʻia ʻo F=cos θ ka mana kumu, a ʻo θ ka ʻokoʻa pae o nā au voltage like ʻole ma kahi ukana nonlinear. ʻO ka mana reactive ka ʻāpana o ka mana i mālama ʻia i loko o ke kaapuni akā ʻaʻole i hana pololei ʻia, i hōʻike ʻia e ke ʻano: Q = Ssin θ = UIsinθ. Ma kahi o Q ka mana reactive ma var (lack).

NoNā kukui poʻo alakaʻia me nā kaapuni uila ʻē aʻe a pau e hana ana ma ka uila DC, hiki ʻole ke hana me ka ʻole o ka mana.