{"id":209295,"date":"2024-03-21T14:07:09","date_gmt":"2024-03-21T14:07:09","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e4%ba%a4%e6%b5%81%e5%9b%9e%e8%b7%af%e3%81%ae%e5%b9%b3%e5%9d%87%e9%9b%bb%e5%8a%9b%e8%a8%88%e7%ae%97%e5%bc%8f-%e6%a6%82%e8%a6%81%e3%81%a8%e5%bf%9c%e7%94%a8\/"},"modified":"2024-05-17T15:10:09","modified_gmt":"2024-05-17T15:10:09","slug":"%e4%ba%a4%e6%b5%81%e5%9b%9e%e8%b7%af%e3%81%ae%e5%b9%b3%e5%9d%87%e9%9b%bb%e5%8a%9b%e8%a8%88%e7%ae%97%e5%bc%8f-%e6%a6%82%e8%a6%81%e3%81%a8%e5%bf%9c%e7%94%a8","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e4%ba%a4%e6%b5%81%e5%9b%9e%e8%b7%af%e3%81%ae%e5%b9%b3%e5%9d%87%e9%9b%bb%e5%8a%9b%e8%a8%88%e7%ae%97%e5%bc%8f-%e6%a6%82%e8%a6%81%e3%81%a8%e5%bf%9c%e7%94%a8\/","title":{"rendered":"\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u8a08\u7b97\u5f0f | \u6982\u8981\u3068\u5fdc\u7528"},"content":{"rendered":"<p class=\"sidekick\">\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u8a08\u7b97\u5f0f\u306e\u57fa\u672c\u6982\u5ff5\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5b9f\u52b9\u5024\u3068\u529b\u7387\u306e\u95a2\u4fc2\u3001\u305d\u3057\u3066\u5bb6\u5ead\u3084\u7523\u696d\u3067\u306e\u5177\u4f53\u7684\u306a\u5fdc\u7528\u4f8b\u3092\u89e3\u8aac\u3002<\/p>\n<h2>\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u8a08\u7b97\u5f0f | \u6982\u8981\u3068\u5fdc\u7528<\/h2>\n<p>\u4ea4\u6d41\uff08Alternating Current: AC\uff09\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u8a08\u7b97\u5f0f\u306f\u3001\u73fe\u4ee3\u306e\u96fb\u6c17\u5de5\u5b66\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u96fb\u529b\u8a08\u7b97\u306f\u3001\u5bb6\u5ead\u3084\u7523\u696d\u7528\u9014\u306b\u304a\u3051\u308b\u96fb\u529b\u306e\u52b9\u7387\u7684\u306a\u4f7f\u7528\u3068\u7ba1\u7406\u306e\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u4ea4\u6d41\u56de\u8def\u306b\u304a\u3051\u308b\u5e73\u5747\u96fb\u529b\u306e\u8a08\u7b97\u65b9\u6cd5\u306b\u3064\u3044\u3066\u306e\u57fa\u672c\u7684\u306a\u6982\u8981\u3068\u305d\u306e\u5fdc\u7528\u4f8b\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u5e73\u5747\u96fb\u529b\u306e\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u76f4\u6d41\uff08Direct Current: DC\uff09\u56de\u8def\u3067\u306f\u3001\u96fb\u529b\\( P \\)\u306f\u5358\u7d14\u306b\u96fb\u5727\\( V \\)\u3068\u96fb\u6d41\\( I \\)\u306e\u7a4d\u3068\u3057\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\\[ P = VI \\]<\/p>\n<p>\u4e00\u65b9\u3001\u4ea4\u6d41\u56de\u8def\u3067\u306f\u96fb\u5727\u3068\u96fb\u6d41\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u5909\u52d5\u3059\u308b\u305f\u3081\u3001\u96fb\u529b\u306e\u8a08\u7b97\u306f\u3082\u3046\u5c11\u3057\u8907\u96d1\u306b\u306a\u308a\u307e\u3059\u3002\u4ea4\u6d41\u56de\u8def\u306e\u77ac\u6642\u96fb\u529b \\( p(t) \\) \u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[ p(t) = v(t) i(t) \\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( v(t) \\)\u306f\u6642\u9593\\( t \\)\u306b\u304a\u3051\u308b\u96fb\u5727\u3001\\( i(t) \\)\u306f\u6642\u9593\\( t \\)\u306b\u304a\u3051\u308b\u96fb\u6d41\u3067\u3059\u3002<\/p>\n<h2>\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b<\/h2>\n<p>\u5e73\u5747\u96fb\u529b \\( P_{avg} \\) \u306f\u3001\u4ea4\u6d41\u306e1\u5468\u671f \\( T \\) \u306b\u308f\u305f\u308b\u77ac\u6642\u96fb\u529b\u306e\u6642\u9593\u5e73\u5747\u3068\u3057\u3066\u6c42\u3081\u3089\u308c\u307e\u3059\u3002\u5177\u4f53\u7684\u306b\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[ P_{avg} = \\frac{1}{T} \\int_0^T v(t) i(t) dt \\]<\/p>\n<p>\u6b63\u5f26\u6ce2\u306e\u5834\u5408\u3092\u8003\u3048\u308b\u3068\u3001\u96fb\u5727 \\( v(t) \\) \u3068\u96fb\u6d41 \\( i(t) \\) \u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[ v(t) = V_m \\sin(\\omega t + \\phi_v) \\]<br \/>\n\\[ i(t) = I_m \\sin(\\omega t + \\phi_i) \\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( V_m \\) \u3068 \\( I_m \\) \u306f\u305d\u308c\u305e\u308c\u96fb\u5727\u3068\u96fb\u6d41\u306e\u30d4\u30fc\u30af\u5024\u3001\\( \\omega \\) \u306f\u89d2\u5468\u6ce2\u6570\u3001\\( \\phi_v \\) \u3068 \\( \\phi_i \\) \u306f\u305d\u308c\u305e\u308c\u96fb\u5727\u3068\u96fb\u6d41\u306e\u4f4d\u76f8\u89d2\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3089\u306e\u5f0f\u3092\u5e73\u5747\u96fb\u529b \\( P_{avg} \\) \u306e\u5f0f\u306b\u4ee3\u5165\u3059\u308b\u3068\u3001\u6b21\u306e\u3088\u3046\u306a\u7d50\u679c\u304c\u5f97\u3089\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[ P_{avg} = \\frac{V_m I_m}{2} \\cos(\\phi_v &#8211; \\phi_i) \\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( \\cos(\\phi_v &#8211; \\phi_i) \\) \u306f\u529b\u7387\uff08Power Factor: PF\uff09\u3068\u547c\u3070\u308c\u3001\u96fb\u5727\u3068\u96fb\u6d41\u306e\u4f4d\u76f8\u5dee\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u5b9f\u969b\u306e\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u306f\u6b21\u306e\u3088\u3046\u306b\u8868\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[ P_{avg} = V_{rms} I_{rms} \\cos(\\phi) \\]<\/p>\n<p>\u3053\u3053\u3067\u3001\\( V_{rms} \\) \u3068 \\( I_{rms} \\) \u306f\u305d\u308c\u305e\u308c\u96fb\u5727\u3068\u96fb\u6d41\u306e\u5b9f\u52b9\u5024\uff08Root Mean Square: RMS\uff09\u3067\u3042\u308a\u3001\\( \\phi \\) \u306f\u96fb\u5727\u3068\u96fb\u6d41\u306e\u4f4d\u76f8\u5dee\u3067\u3059\u3002<\/p>\n<h2>\u5b9f\u52b9\u5024\u3068\u529b\u7387<\/h2>\n<p>\u5b9f\u52b9\u5024\u306f\u3001\u4ea4\u6d41\u96fb\u5727\u3084\u96fb\u6d41\u306e\u52b9\u679c\u7684\u306a\u5024\u3092\u793a\u3057\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u5bb6\u5ead\u7528\u306e\u901a\u5e38\u306e\u96fb\u5727120V\u3084230V\u306f\u305d\u306e\u5b9f\u52b9\u5024\u3067\u3042\u308a\u3001\u30d4\u30fc\u30af\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u5b9f\u52b9\u5024\u306f\u6b21\u306e\u3088\u3046\u306b\u8a08\u7b97\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[ V_{rms} = \\frac{V_m}{\\sqrt{2}} \\]<br \/>\n\\[ I_{rms} = \\frac{I_m}{\\sqrt{2}} \\]<\/p>\n<p>\u529b\u7387 \\( \\cos(\\phi) \\) \u306f\u3001\u96fb\u529b\u306e\u52b9\u7387\u6027\u3092\u793a\u3057\u307e\u3059\u3002\u529b\u7387\u304c1\u306b\u8fd1\u3044\u307b\u3069\u3001\u96fb\u529b\u306f\u52b9\u7387\u7684\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u5fdc\u7528\u4f8b<\/h2>\n<p>\u3053\u306e\u5e73\u5747\u96fb\u529b\u306e\u8a08\u7b97\u5f0f\u306f\u3001\u5bb6\u5ead\u7528\u96fb\u5316\u88fd\u54c1\u304b\u3089\u5927\u578b\u306e\u7523\u696d\u6a5f\u5668\u307e\u3067\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u5fdc\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u96fb\u529b\u4f1a\u793e\u306f\u3001\u3053\u308c\u3092\u7528\u3044\u3066\u6708\u3005\u306e\u96fb\u529b\u91cf\u3092\u8a08\u7b97\u3057\u3001\u96fb\u6c17\u6599\u91d1\u3092\u8acb\u6c42\u3057\u307e\u3059\u3002<\/li>\n<li>\u30a8\u30f3\u30b8\u30cb\u30a2\u306f\u3001\u6a5f\u5668\u306e\u52b9\u7387\u3092\u8a55\u4fa1\u3057\u3001\u96fb\u529b\u4f7f\u7528\u3092\u6700\u9069\u5316\u3059\u308b\u305f\u3081\u306b\u3053\u306e\u8a08\u7b97\u5f0f\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/li>\n<li>\u9ad8\u52b9\u7387\u30a8\u30cd\u30eb\u30ae\u30fc\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u3084\u7701\u30a8\u30cd\u5bfe\u7b56\u306b\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u304c\u3001\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u8a08\u7b97\u5f0f\u306e\u57fa\u672c\u7684\u306a\u6982\u8981\u3068\u305d\u306e\u5fdc\u7528\u306b\u3064\u3044\u3066\u306e\u8aac\u660e\u3067\u3059\u3002\u96fb\u529b\u306e\u52b9\u7387\u7684\u306a\u4f7f\u7528\u3068\u7ba1\u7406\u306e\u305f\u3081\u306b\u3001\u3053\u306e\u77e5\u8b58\u306f\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002\u3053\u308c\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u8eab\u306e\u56de\u308a\u306e\u96fb\u6c17\u6a5f\u5668\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3057\u3066\u3044\u308b\u304b\u3001\u3088\u308a\u6df1\u304f\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4ea4\u6d41\u56de\u8def\u306e\u5e73\u5747\u96fb\u529b\u8a08\u7b97\u5f0f\u306e\u57fa\u672c\u6982\u5ff5\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5b9f\u52b9\u5024\u3068\u529b\u7387\u306e\u95a2\u4fc2\u3001\u305d\u3057\u3066\u5bb6\u5ead\u3084\u7523\u696d\u3067\u306e\u5177\u4f53\u7684\u306a\u5fdc\u7528\u4f8b\u3092\u89e3\u8aac\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209295","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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