{"id":249,"date":"2017-11-17T12:07:12","date_gmt":"2017-11-17T12:07:12","guid":{"rendered":""},"modified":"2017-11-17T20:07:29","modified_gmt":"2017-11-17T12:07:29","slug":"%e8%b6%85%e5%bf%ab%e6%81%a2%e5%a4%8d%e4%ba%8c%e6%9e%81%e7%ae%a1%e6%a8%a1%e5%9d%97%28fred%29%e7%9a%84%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=249","title":{"rendered":"\u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u7684\u5e94\u7528"},"content":{"rendered":"
\n\t \u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u7c7b\u578bMEO\uff0cMEE\uff0cMEA\u548cMEK(\u56fe1)\u662f\u5206\u7acb\u578bDESEI\u5411\u5927\u7535\u6d41\u7684\u6269\u5c55\uff0c\u5176\u7279\u6027\u4e0d\u53d8\u3002\u5b83\u53ef\u4ee5\u7528\u5728\u6240\u6709MOSFET\uff0cIGBT\u6216\u53cc\u6781\u6027\u8fbe\u6797\u987f\u7ba1\u7535\u8def\u4e2d\uff0c\u5de5\u4f5c\u9891\u7387\u8981\u9ad8\u4e8e1kHz\u3002 \u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u7c7b\u578bMEO\uff0cMEE\uff0cMEA\u548cMEK(\u56fe1)\u662f\u5206\u7acb\u578bDESEI\u5411\u5927\u7535\u6d41\u7684\u6269\u5c55\uff0c\u5176\u7279\u6027\u4e0d\u53d8\u3002\u5b83\u53ef\u4ee5\u7528\u5728\u6240\u6709MOSFET\uff0cIGBT\u6216\u53cc\u6781\u6027\u8fbe\u6797\u987f\u7ba1\u7535\u8def\u4e2d\uff0c\u5de5\u4f5c\u9891\u7387\u8981\u9ad8\u4e8e1kHz\u3002 \u5982\u679c\u8981\u7528\u51e0\u4e2a<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/249"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=249"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/249\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=249"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\t \u5982\u679c\u8981\u7528\u51e0\u4e2a\u5206\u7acb\u4e8c\u6781\u7ba1\u4e95\u8054\u6210\u5c0f\u6a21\u5757\uff0c\u6362\u7528\u8fd9\u4e9b\u6a21\u5757\u53ef\u51cf\u5c0f\u5b89\u88c5\u65f6\u95f4\u548c\u8bbe\u5907\u5c3a\u5bf8\u3002\u4e00\u822cFRED\u53ef\u7528\u4f5c\u5927\u7535\u6d41\u7684IGBT\u6216\u79ef\u6781\u6027\u8fbe\u6797\u987f\u7ba1\u7684\u7eed\u6d41\u4e8c\u6781\u7ba1\uff0c\u6216\u7528\u4f5c\u7535\u6e90\u548c\u710a\u63a5\u673a\u7684\u5feb\u901f\u6574\u6d41\u7ba1\u3002\u4e0b\u9762\u662f\u4e00\u7cfb\u5217\u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u7684\u5e94\u7528\u3002
\n\t A. \u7528\u4f5c\u62d6\u52a8\u548cUPS\u7cfb\u7edf\u4e2d\u5355\u76f8\u6216\u4e09\u76f8\u9006\u53d8\u5668\u7684\u7eed\u6d41\u4e8c\u6781\u7ba1\uff0c\u91c7\u7528PWM\u63a7\u5236\uff0c\u5f00\u5173\u9891\u7387\u9ad8\u4e8e1kHz(\u56fe2)\u3002<\/span><\/p>\n\n\n
\n \n\t\t\t\t <\/span><\/td>\n \n\t\t\t\t <\/span><\/td>\n<\/tr>\n \n \n\t\t\t\t\u56fe1 \u73b0\u6709\u7684\u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u7684\u7535\u8def\u56fe<\/span><\/td>\n \n\t\t\t\t\u56fe2 MEE\u578b\u6216MEO\u578b<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n B. \u7528\u4f5c\u5f00\u5173\u7535\u6e90\u6216\u4f3a\u670d\u9a71\u52a8\u7684\u7eed\u6d41\u4e8c\u6781\u7ba1
\n (a)\u4f7f\u7528MOSFET\u548c\u8096\u7279\u57fa\u963b\u65ad\u4e8c\u6781\u7ba1\u7684\u5bf9\u79f0\u5168\u4fa8\u7535\u8def(\u56fe3(a))
\n (b)\u4f7f\u7528MOSFET\u7684\u6b63\u6fc0\u53d8\u6362\u5668\u548c\u76f4\u6d41\u7535\u673a\u9a71\u52a8\u7684\u4e0d\u5bf9\u79f0\u5168\u6865\u56fe(\u56fe3(b))<\/span>
<\/p>\n\n\n
\n \n\t\t\t\t <\/span><\/td>\n \n\t\t\t\t <\/span><\/td>\n<\/tr>\n \n \n\t\t\t\t\u56fe3 \u7528\u4f5c\u5f00\u5173\u7535\u6e90\u6216\u4f3a\u670d\u9a71\u52a8\u7684\u7eed\u6d41\u4e8c\u6781\u7ba1<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n C. \u7528\u4f5c\u7535\u6e90\u6216\u710a\u63a5\u673a\u7684\u6574\u6d41
\n \u5168\u6ce2\u6574\u6d41\u7535\u8def(\u56fe4(a))\u4e2d\uff0c\u6839\u636e\u8d1f\u8f7d\u7535\u6d41\u7684\u5927\u5c0f\uff0c\u53ef\u9009\u62e9\u51e0\u4e2aMEO\u6a21\u5757\u5e76\u8054\u3002
\n \u5171\u9634\u6781\u62d3\u6734(\u56fe4(b))\u4e2d\uff0c\u6839\u636e\u8d1f\u8f7d\u7535\u6d41\u7684\u5927\u5c0f\uff0c\u53ef\u9009\u62e9\u51e0\u4e2aMEK\u6a21\u5757\u4e95\u8054\u3002
\n \u5171\u9633\u6781\u62d3\u6734(\u56fe4(c))\u4e2d\uff0c\u6839\u636e\u8d1f\u8f7d\u7535\u6d41\u7684\u5927\u5c0f\uff0c\u53ef\u9009\u62e9\u51e0\u4e2aMEA\u6a21\u5757\u5e76\u8054\u3002
\n \u5168\u6865\u6574\u6d41\u7535\u8def(\u56fe4(d))\u4e2d\uff0c\u6839\u636e\u8d1f\u8f7d\u7535\u6d41\u7684\u5927\u5c0f\uff0c\u53ef\u9009\u62e9\u51e0\u4e2aMEE\u6216MEO\u6a21\u5757\u5e76\u8054\u3002
\n \u9ad8\u538b\u8f93\u51fa\u7684\u5168\u6865\u6574\u6d41\u7535\u8def(\u56fe4(e))\u4e2d\uff0c\u53ef\u4f7f\u7528\u4e24\u4e2aMEE\u6a21\u5757\u4e32\u8054\u83b7\u5f97\u9ad8\u963b\u65ad\u7535\u538b\u3002
\n \u6240\u6709\u7684\u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u4e2d\u8fde\u7eed\u76f4\u6d41\u7535\u6d41IFAVM<\/sub>\u7684\u6570\u503c\u662f\u5728\u6563\u70ed\u5668\u6e29\u5ea6TS<\/sub>=65\u2103\uff0c\u7ed3\u6e29TVJM<\/sub>=125\u2103(\u6e29\u5dee60\u2103)\u7684\u6761\u4ef6\u4e0b\u7ed9\u51fa\u7684\u3002
\n \u5982\u4e0e\u522b\u7684\u4ea7\u54c1\u6bd4\u8f83\uff0c\u8981\u786e\u5b9a\u4e24\u4e2a\u6a21\u5757\u7684\u7ed3\u82af\u4e0e\u6563\u70ed\u5668\u6e29\u5dee\u76f8\u7b49\uff0c\u56e0\u4e3a\u6e29\u5dee\u51b3\u5b9a\u53ef\u6d41\u8fc7\u7684\u6b63\u5411\u7535\u6d41\u3002
\n \u800c\u4e14\u3002\u8d85\u5feb\u6062\u590d\u4e8c\u6781\u7ba1\u6a21\u5757(FRED)\u7684\u7535\u6d41\u5b9a\u989d\u548c\u963b\u65ad\u635f\u8017\u90fd\u662f\u5728TVJ<\/sub>=125\u2103\u548c\u5360\u7a7a\u6bd4d=50%\u6761\u4ef6\u4e0b\u7684\u3002<\/span><\/p>\n