Ch\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 11 SGK V\u1eadt L\u00fd 12):\u00a0C\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u n\u00f3i chung d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o ? L\u1eddi gi\u1ea3i: Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00e1y \u0111i\u1ec7n xoay chi\u1ec1u d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb. B\u00e0i 2 (trang 11 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e2n bi\u1ec7t d\u00f2ng \u0111i\u1ec7n m\u1ed9t pha v\u1edbi […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam\" \/>\n<meta property=\"article:published_time\" content=\"2018-03-30T10:03:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/lop12.edu.vn\/wp-content\/uploads\/2018\/03\/1-595.png\" \/>\n\t<meta property=\"og:image:width\" content=\"360\" \/>\n\t<meta property=\"og:image:height\" content=\"197\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"H\u00e0 Trang\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"H\u00e0 Trang\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/\",\"url\":\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/\",\"name\":\"Ch\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u\",\"isPartOf\":{\"@id\":\"https:\/\/lop12.edu.vn\/#website\"},\"datePublished\":\"2018-03-30T10:03:02+00:00\",\"dateModified\":\"2018-03-30T10:03:02+00:00\",\"author\":{\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\"},\"breadcrumb\":{\"@id\":\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/lop12.edu.vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Ch\u01b0\u01a1ng 3 – B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/lop12.edu.vn\/#website\",\"url\":\"https:\/\/lop12.edu.vn\/\",\"name\":\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/lop12.edu.vn\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/2da855e5d06b553ac0065157cc261a45\",\"name\":\"H\u00e0 Trang\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/545a8100db1147f314111301d261dc33?s=96&d=mm&r=g\",\"caption\":\"H\u00e0 Trang\"},\"url\":\"https:\/\/lop12.edu.vn\/author\/trangvth2\/\"}]}<\/script>\n","yoast_head_json":{"title":"Ch\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/","og_locale":"en_US","og_type":"article","og_title":"Ch\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u","og_description":"B\u00e0i 1 (trang 11 SGK V\u1eadt L\u00fd 12):\u00a0C\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u n\u00f3i chung d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o ? 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B\u00e0i 1 (trang 11 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0C\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u n\u00f3i chung d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o ?<\/span><\/p>\n

Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00e1y \u0111i\u1ec7n xoay chi\u1ec1u d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb.<\/p>\n

B\u00e0i 2 (trang 11 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ph\u00e2n bi\u1ec7t d\u00f2ng \u0111i\u1ec7n m\u1ed9t pha v\u1edbi d\u00f2ng ba pha.<\/span><\/p>\n

D\u00f2ng 1 pha : Roto t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng quay sinh ra su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng xoay chi\u1ec1u trong c\u00e1c cu\u1ed9n d\u00e2y c\u1ed1 \u0111\u1ecbnh (stato).<\/p>\n

D\u00f2ng 3 pha : Roto t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng quay sinh ra su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng xoay chi\u1ec1u trong 3 cu\u1ed9n d\u00e2y gi\u1ed1ng nhau \u0111\u1eb7t c\u1ed1 \u0111\u1ecbnh tr\u00ean v\u00f2ng tr\u00f2n t\u1ea1o v\u1edbi nhau nh\u1eefng g\u00f3c 120^{o<\/sup>\u00a0(stato)<\/p>\n}

B\u00e0i 3 (trang 11 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Trong m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u m\u1ed9t pha, t\u1eeb tr\u01b0\u1eddng quay c\u00f3 vecto B quay 300 v\u00f2ng \/ ph\u00fat t\u1ea1o b\u1edfi 20 c\u1ef1c nam ch\u00e2m \u0111i\u1ec7n (10 c\u1ef1c nam v\u00e0 10 c\u1ef1c B\u1eafc) quay v\u1edbi t\u1ed1c \u0111\u1ed9 bao nhi\u00eau ?<\/span><\/p>\n

B\u00e0i 4 (trang 11 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Trong tr\u01b0\u1eddng h\u1ee3p ba su\u1ea5t \u0111i\u1ec7n \u0111\u1ed9ng c\u1ee7a m\u00e1y ph\u00e1t ba pha m\u1eafc theo h\u00ecnh sao v\u00e0 ba t\u1ea3i c\u0169ng \u0111\u01b0\u1ee3c m\u1eafc theo h\u00ecnh sao th\u00ec ph\u1ea3i c\u00f3 b\u1ed1n \u0111\u01b0\u1eddng d\u00e2y n\u1ed1i t\u1eeb ngu\u1ed3n \u0111\u1ebfn t\u1ea3i. H\u00e3y x\u00e9t tr\u01b0\u1eddng h\u1ee3p ba t\u1ea3i \u0111\u1ed1i x\u1ee9ng v\u00e0 ch\u1ee9ng minh r\u1eb1ng trong s\u1ed1 b\u1ed1n \u0111\u01b0\u1eddng d\u00e2y n\u1ed1i \u1ea5y c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng d\u00e2y t\u1ea1i \u0111\u00f3 c\u01b0\u1eddng \u0111\u1ed9 b\u1eb1ng kh\u00f4ng (\u0111\u01b0\u1eddng d\u00e2y trung h\u00f2a).<\/span><\/p>\n

Khi 3 t\u1ea3i \u0111\u1ed1i x\u1ee9ng, c\u00e1c vecto quay c\u1ee7a 3 d\u00f2ng \u0111i\u1ec7n trong 3 t\u1ea3i h\u1ee3p nhau nh\u1eefng g\u00f3c 120^{o<\/sup>\u00a0nh\u01b0 h\u00ecnh v\u1ebd.<\/p>\n}

\n
<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
B\u00e0i 1 (trang 11 SGK V\u1eadt L\u00fd 12):\u00a0C\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u n\u00f3i chung d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o ? L\u1eddi gi\u1ea3i: Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00e1y \u0111i\u1ec7n xoay chi\u1ec1u d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb. B\u00e0i 2 (trang 11 SGK V\u1eadt L\u00fd 12):\u00a0Ph\u00e2n bi\u1ec7t d\u00f2ng \u0111i\u1ec7n m\u1ed9t pha v\u1edbi […]<\/p>\n","protected":false},"author":3,"featured_media":24792,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1303],"tags":[1428,1427],"yoast_head":"\nCh\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/chuong-3-bai-17-may-phat-dien-xoay-chieu\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ch\u01b0\u01a1ng 3 - B\u00e0i 17: M\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u\" \/>\n<meta property=\"og:description\" content=\"B\u00e0i 1 (trang 11 SGK V\u1eadt L\u00fd 12):\u00a0C\u00e1c m\u00e1y ph\u00e1t \u0111i\u1ec7n xoay chi\u1ec1u n\u00f3i chung d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc n\u00e0o ? L\u1eddi gi\u1ea3i: Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u00e1c m\u00e1y \u0111i\u1ec7n xoay chi\u1ec1u d\u1ef1a tr\u00ean hi\u1ec7n t\u01b0\u1ee3ng c\u1ea3m \u1ee9ng \u0111i\u1ec7n t\u1eeb. 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