{"id":1379,"date":"2018-11-14T03:26:00","date_gmt":"2018-11-14T03:26:00","guid":{"rendered":""},"modified":"2018-11-14T11:26:27","modified_gmt":"2018-11-14T03:26:27","slug":"%e8%af%a6%e8%a7%a3%e5%8f%98%e5%8e%8b%e5%99%a8%e6%bc%8f%e6%84%9f%e4%b8%8e%e6%b0%94%e9%9a%99%e5%a4%a7%e5%b0%8f%e7%9a%84%e5%85%b3%e7%b3%bb","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1379","title":{"rendered":"\u8be6\u89e3\u53d8\u538b\u5668\u6f0f\u611f\u4e0e\u6c14\u9699\u5927\u5c0f\u7684\u5173\u7cfb"},"content":{"rendered":"

\u5728\u901b\u8bba\u575b\u7684\u65f6\u5019\uff0c\u53d1\u73b0\u5f88\u591a\u4eba\u5bf9\u300c\u53d8\u538b\u5668\u6f0f\u611f\u4e0e\u6c14\u9699\u5927\u5c0f\u7684\u5173\u7cfb\u300d\u7406\u89e3\u4e0d\u591f\u5168\u9762\uff0c\u56e0\u6b64\u60f3\u548c\u5927\u5bb6\u6df1\u5165\u4ea4\u6d41\u4e00\u4e0b\u3002

\n 

\n\u5178\u578b\u95ee\u9898<\/strong><\/span><\/span>

\n\u53d8\u538b\u5668\u6f0f\u611f\u4e0e\u6c14\u9699\u5927\u5c0f\u6709\u4ec0\u4e48\u5173\u7cfb\uff1f<\/strong>

\n\u7b54\u6848\u4e00\uff1a<\/strong>\u6c14\u9699\u8d8a\u5927\uff0c\u6f0f\u611f\u8d8a\u5927\u3002

\n\u7b54\u6848\u4e8c\uff1a<\/strong>\u6c14\u9699\u8d8a\u5927\uff0c\u6f0f\u611f\u8d8a\u5c0f\uff0c\u53ea\u662f\u6f0f\u611f\u5360\u539f\u8fb9\u611f\u91cf\u7684\u6bd4\u91cd\u589e\u5927\u4e86\u3002

\n\u4ee5\u4e0a\u4e24\u4e2a\u7b54\u6848\u5b70\u5bf9\u5b70\u9519\uff1f\u6b22\u8fce\u5927\u5bb6\u56de\u5e16\u8bf4\u8bf4\u81ea\u5df1\u7684\u770b\u6cd5\u3002

\n 

\n\u7f51\u53cb\u8ba8\u8bba <\/strong><\/span><\/span><\/span><\/span>

\n\u25ba <\/strong><\/span><\/span>\u8368\u9ebb\u8349<\/strong>

\n\u5148\u770b\u8fd9\u6837\u4e00\u4e2a\u95ee\u9898\uff1a<\/strong>

\n\u5047\u8bbe\u521d\u6b21\u7ea7\u531d\u6570\u4e0d\u53d8\uff0c\u7ed5\u7ebf\u65b9\u5f0f\u4e0d\u53d8\uff0c\u4ec5\u6539\u53d8\u6c14\u606f\u957f\u5ea6\uff0c\u53d8\u538b\u5668\u6f0f\u611f\u4e0e\u6c14\u9699\u5927\u5c0f\u6709\u4ec0\u4e48\u5173\u7cfb\uff1f <\/strong>

\nA \u9519\u7684\u6bd4\u8f83\u660e\u663e

\nB \u524d\u534a\u53e5\u9519\u4e86\uff0c\u540e\u534a\u53e5\u5bf9\u4e86

\nC \u968f\u7740\u6c14\u606f\u7684\u589e\u5927\uff0c\u6f0f\u611f\u7684\u5927\u5c0f\u53d8\u5316\u65e2\u4e0d\u662f\u6b63\u76f8\u5173\u5173\u7cfb\uff0c\u4e5f\u4e0d\u662f\u8d1f\u76f8\u5173\u5173\u7cfb\uff1b\u4f46\u662f\uff0c\u6f0f\u611f\u5360\u539f\u8fb9\u611f\u91cf\u7684\u6bd4\u91cd\u589e\u5927\u662f\u80af\u5b9a\u7684\u3002 

\n

\n\u8bbe\uff1a

\n\u521d\u7ea7\u7535\u611f\u91cf L1 (\u968f air gap \u589e\u5927\u800c\u51cf\u5c0f\uff0c\u51cf\u51fd\u6570)

\n\u52b1\u78c1\u7535\u611f Lm (\u968f air gap \u589e\u5927\u800c\u51cf\u5c0f\uff0c\u51cf\u51fd\u6570)

\n\u5219\u521d\u7ea7\u6f0f\u611f Llk=L1 - Lm<\/span><\/strong> (\u968f air gap \u589e\u5927\uff0cLlk \u4e0d\u786e\u5b9a)

\n 

\n\u8d34\u4e00\u7ec4\u5b9e\u6d4b\u6570\u636e\uff1a<\/span><\/span>

\n
<\/p>\n

\n\t <\/span><\/div>\n

* \u4ec5 air gap \u957f\u5ea6\u4e3a\u53d8\u91cf<\/span>

\n

\nThe length of air gap varies from 2mm to 10mm\uff0c the symbolic in above sheet is defined: 

\n\u25aa L1: <\/strong>Primary inductance

\n\u25aa L2: <\/strong>secondary inductance

\n\u25aa Lm: <\/strong>Magenetizing Inductance

\n\u25aa L11\uff1a<\/strong>Primary Leakage inductance

\n\u25aa L22\uff1a<\/strong>secondary Leakage inductance

\n\u25aa K\uff1a<\/strong>coupling coefficient

\n <\/span><\/span>

\n\u25ba <\/strong>\u5b66\u6d77\u6e38\u8f6e<\/strong>

\n\u505a\u5b9e\u9a8c\u5f88\u8d39\u65f6\u95f4\uff0c\u8fd9\u70b9\u503c\u5f97\u80af\u5b9a\u3002\u6211\u60f3\u697c\u4e3b\u63d0\u95ee\u7684\u521d\u8877\u5e94\u8be5\u662f\uff0c\u5728\u4e00\u4e2a\u5f88\u5c0f\u7684 gap \u8303\u56f4\u5185 (\u6bd4\u5982 0.3mm \u5230 0.4mm)\uff0c\u6211\u9009\u62e9\u4efb\u4f55\u4e00\u4e2a\u611f\u91cf (\u6bd4\u5982 500uH \u5230800uH)\uff0c\u90fd\u53ef\u4ee5\u505a\u6210\u4e00\u4e2a\u5355\u7aef\u53cd\u6fc0\u7535\u6e90\u3002\u4f46\u662f\u6211\u5e0c\u671b\u80fd\u5728\u8fd9\u6837\u7684\u4e00\u4e2a\u8303\u56f4\u5185\uff0c\u53d6\u5f97\u4e00\u4e2a\u6f0f\u611f\u6700\u5c0f\u7684 gap\u3002

\n <\/span><\/span>

\n\u4f5c\u8005\u5206\u4eab <\/strong><\/span><\/span>

\n\u6709\u5916\u7f6e\u8c10\u632f\u7535\u611f\u7684\uff0c\u6c14\u9699\u4e0d\u4f1a\u7279\u522b\u8bbe\u8ba1\uff0c\u6ee1\u8db3\u611f\u91cf\u4e3a\u4e3b\u3002\u5bf9\u4e8e\u5229\u7528\u6f0f\u611f\u4f5c\u4e3a\u8c10\u632f\u7535\u611f\u7684\uff0c\u4e00\u822c\u4f1a\u52a0\u6321\u5899\u6216\u8005\u5206\u69fd\u7ed3\u6784\uff0c\u6545\u610f\u62c9\u5927\u539f\u526f\u8fb9\u7684\u8ddd\u79bb\u6765\u589e\u5927\u6f0f\u611f\u3002<\/strong>

\n 

\n\u9996\u5148\u770b\u770b\u53d8\u538b\u5668\u6a21\u578b\uff08\u4e0d\u8003\u8651\u7535\u963b\uff09\uff1a<\/span><\/span>

\n
<\/p>\n

\n\t <\/span>

\n\t <\/div>\n

\u5f53\u77ed\u8def\u526f\u8fb9\u5728\u539f\u8fb9\u6d4b\u8bd5\u6f0f\u611f\u7684\u65f6\u5019\uff0c\u6d4b\u7684\u5176\u5b9e\u5e76\u4e0d\u662f\u771f\u6b63\u7684\u539f\u8fb9\u6f0f\u611f<\/u>\u3002\u6d4b\u5230\u7684\u6f0f\u611f\u53ef\u4ee5\u7528\u4e0b\u5f0f\u8868\u793a\uff1a<\/span><\/span>

\n
<\/p>\n

\n\t <\/span>

\n\t <\/div>\n

\u53ea\u6709\u5f53 Lm>>Lk2 \u65f6\uff0cLk=Lk1+n2Lk2<\/span>\u3002<\/strong>\u968f\u7740\u6c14\u9699\u52a0\u5927\uff0cLm \u662f\u51cf\u5c0f\u7684\uff0c\u5c06\u4e0d\u518d\u6ee1\u8db3 Lm>>Lk2 \u8fd9\u4e2a\u6761\u4ef6\uff0c\u5b9e\u6d4b\u7684 Lk \u4f1a\u53d7 Lm \u7684\u5f71\u54cd\u3002 

\n

\n\u5982\u679c\u8981\u5f97\u5230 Lk1 \u548c Lk2 \u7684\u503c\uff0c\u53ef\u4ee5\u77ed\u539f\u8fb9\u6d4b\u526f\u8fb9\u6f0f\u611f\uff0c\u7136\u540e\u8054\u7acb\u65b9\u7a0b\u7ec4\uff0c\u89e3\u51fa Lk1 \u548c Lk2\u3002

\n 

\n\u8bf4\u5230\u6d4b\u8bd5\u6f0f\u611f\uff0c\u4e0d\u5f97\u4e0d\u63d0\u5230\u53e6\u4e00\u4e2a\u91cd\u8981\u53c2\u6570——\u6d4b\u8bd5\u9891\u7387\u3002<\/span><\/strong>

\n

\n\u4e00\u822c LCR \u8868\u6709 100Hz\u3001120Hz\u30011K\u300110K\u3001100K \u8fd9\u51e0\u6863\u9891\u7387\uff0c\u5dee\u4e00\u70b9\u53ef\u80fd\u6700\u9ad8\u5c31\u5230 10K\uff0c\u4e5f\u6709\u9ad8\u7ea7\u7684\u53ef\u4ee5\u81ea\u7531\u8bbe\u7f6e\u9891\u7387\u3002

\n

\n\u5927\u5bb6\u6709\u4e00\u4e2a\u5171\u8bc6\u662f\u5c3d\u91cf\u5728\u5f00\u5173\u9891\u7387\u6d4b\u8bd5<\/strong>\uff0c\u4f46\u8bbe\u5907\u6240\u9650\u6216\u8005\u5b58\u5728\u8c10\u632f\u4e5f\u4f1a\u6d4b\u4e0d\u51c6\uff0c\u65e0\u6cd5\u5728\u5f00\u5173\u9891\u7387\u6d4b\u8bd5\u3002\u4ee5\u524d\u770b\u5230\u4e00\u4e9b\u89c4\u683c\u4e66\uff0c\u53d8\u538b\u5668\u7684\u611f\u91cf\u548c\u6f0f\u611f\u6d4b\u8bd5\u9891\u7387\u4e3a 1K \u6216\u8005 10K\uff0c\u5728\u6211\u770b\u6765\u90fd\u4e0d\u662f\u5f88\u5408\u7406\u3002

\n 

\n\u4e0b\u9762\u4e3a\u4e00\u7ec4\u5728\u4e0d\u540c\u9891\u7387\u4e0b\u7684\u6f0f\u611f\u5b9e\u6d4b\u6570\u636e\u3002 <\/span><\/span>

\n
<\/p>\n\n\n\n\n
\n\t\t\t\t100Hz<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t120Hz<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t1K<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t10K<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t100K <\/strong><\/span><\/span><\/td>\n<\/tr>\n
\n\t\t\t\t3.081m<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t2.861m<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t1.167m<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t29.85u<\/strong><\/span><\/span><\/td>\n\n\t\t\t\t7.799u<\/strong><\/span><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n



\n\u53ef\u89c1\u4e0d\u540c\u9891\u7387\u5bf9\u6f0f\u611f\u7684\u6d4b\u8bd5\u503c\u5f71\u54cd\u6709\u591a\u5927\uff01 

\n\u4e3a\u4ec0\u4e48\u4f1a\u6709\u8fd9\u4e48\u5927\u7684\u5dee\u5f02\uff1f\u539f\u56e0\u4ee5\u53ca\u89e3\u51b3\u529e\u6cd5\u662f\u4ec0\u4e48\uff1f<\/strong>

\n 

\n\u9996\u5148\uff0c\u6211\u4eec\u8981\u6e05\u695a\u6f0f\u611f\u5230\u5e95\u6d4b\u7684\u662f\u4ec0\u4e48\u3002 

\n\u6d4b\u8bd5\u6f0f\u611f\u65f6\uff0c\u4e0d\u80fd\u5ffd\u7565\u539f\u8fb9\u548c\u526f\u8fb9\u7684\u56de\u8def\u963b\u6297<\/strong>\u3002\u526f\u8fb9\u963b\u6297\u6298\u7b97\u5230\u539f\u8fb9\u7684\u603b\u963b\u6297\u548c\u6f0f\u611f\u662f\u4e32\u8054\u5173\u7cfb\uff0c\u963b\u6297\u662f\u5b9e\u90e8\uff0c\u6f0f\u611f\u662f\u865a\u90e8\uff08Z=R+jwLk\uff09\u3002\u5728\u4f4e\u9891\u65f6\u7531\u4e8e\u865a\u90e8\u592a\u5c0f\uff0cZ \u503c\u4e3b\u8981\u53cd\u6620\u7684\u662f\u963b\u6297\uff1b\u968f\u7740\u9891\u7387\u589e\u52a0\u865a\u90e8\u5728\u7ebf\u6027\u589e\u52a0\uff0c\u6700\u7ec8\u8fbe\u5230\u611f\u6297\u8fdc\u5927\u4e8e\u963b\u6297\u7684\u65f6\u5019\uff0c\u624d\u7b97\u662f\u6f0f\u611f\u503c\uff0c\u6b64\u65f6\u6d4b\u51fa\u7684\u624d\u6bd4\u8f83\u51c6\u786e\u3002 

\n

\n\u4e5f\u5c31\u662f\u8bf4\u5f53\u9891\u7387\u9ad8\u5230\u7ebf\u8def\u963b\u6297\u53ef\u4ee5\u5ffd\u7565\u7684\u65f6\u5019\u518d\u6d4b\u8bd5\u6f0f\u611f\u624d\u662f\u5408\u7406\u7684<\/strong>\u3002 

\n\u8fd9\u91cc\u5927\u5bb6\u53ef\u4ee5\u53bb\u505a\u4e2a\u5c0f\u5b9e\u9a8c\uff1a\u6d4b\u6f0f\u611f\u7684\u65f6\u5019\u6545\u610f\u5728\u539f\u8fb9\u6216\u8005\u526f\u8fb9\u4e32\u5165\u7535\u963b\uff0c\u6bd4\u5982 200mhom\uff0c\u7136\u540e\u4ece\u4f4e\u9891\u5230\u9ad8\u9891\u6d4b\u4e00\u904d\uff0c\u770b\u770b\u4f1a\u6709\u4ec0\u4e48\u53d1\u73b0\u3002

\n 

\n\u8fd9\u4e2a\u78c1\u5bfc\u7387\u548c\u9891\u7387\u7684\u5173\u7cfb\u6ca1\u90a3\u4e48\u7b80\u5355\u7684\uff0c\u770b\u770b\u4e0b\u9762\u7684\u66f2\u7ebf\u56fe\uff1a\u4ece\u4f4e\u9891\u5230\u4e00\u5b9a\u9891\u7387\uff0c\u78c1\u5bfc\u7387\u662f\u4e0d\u53d8\u7684\uff0c\u7136\u540e\u968f\u7740\u9891\u7387\u4e0a\u5347\u78c1\u5bfc\u7387\u4e0a\u5347\uff0c\u518d\u9ad8\u9891\u5c31\u4e0b\u964d\u4e86\u3002

\n <\/span><\/span><\/p>\n

\n\t <\/span><\/div>\n

 

\n\u5173\u4e8e\u6f0f\u611f\u9891\u7387\u7684\u6d4b\u91cf\uff0c\u4e0b\u9762\u770b \u770bDr.Ray Ridley \u600e\u4e48\u8bf4\u3002

\n <\/span><\/span><\/p>\n

\n\t<\/span><\/div>\n
\n\t <\/span><\/div>\n
\n\t <\/span><\/div>\n



\n\u5b9e\u9645\u4e2d\uff0c\u6211\u4eec\u4e00\u822c\u6d4b\u8bd5\u6f0f\u611f\u7684\u9891\u7387\u8bbe\u7f6e\u5728 40K \u4ee5\u4e0a<\/strong>\uff0c\u4e5f\u63a8\u8350\u5927\u5bb6\u4f7f\u7528\uff0c\u4e0d\u8981\u518d\u5728 1K \u6216\u8005 10K \u4e0b\u6d4b<\/strong>\uff0c\u907f\u514d\u8f83\u5927\u8bef\u5dee\u3002

\n 

\n\u603b \u7ed3  <\/strong><\/span><\/span>

\n\u4e0b\u9762\u4ee5\u4e00\u4e2a\u4f8b\u5b50\u6765\u8bf4\u660e\u53d8\u538b\u5668\u6f0f\u611f\u4e0e\u6c14\u9699\u5927\u5c0f\u76843\u79cd\u5173\u7cfb\uff1a\u4e0d\u53d8\u3001\u53d8\u5927\u3001\u53d8\u5c0f\u3002<\/strong>

\n 

\n\u89c1\u4e0b\u56fe\uff0c\u5047\u8bbe\u6c14\u96991\u30012\u30013\u4f7f\u5f97\u78c1\u963b R1=R2=R3\uff0c\u5ffd\u7565\u7a97\u53e3\u7684\u90a3\u5c11\u90e8\u5206\u78c1\u901a\uff0c\u53ef\u77e5 Φ=Φ1+Φ2\u3002

\n <\/span><\/span><\/p>\n

\n\t <\/span><\/div>\n

 

\n\u5b58\u5728\u4e0b\u97623\u79cd\u60c5\u51b5\uff1a<\/strong>

\n1. \u589e\u52a0\u6c14\u96991\uff0cR1>R3\uff0c\u4f7f\u5f97 Φ1>Φ2\uff0c\u5373\u8026\u5408\u5230 Ns \u7684\u78c1\u901a\u66f4\u591a\uff0c\u6f0f\u611f\u51cf\u5c0f\u3002

\n2. \u589e\u52a0\u6c14\u96992\uff0cR1=R3 \u8fd8\u662f\u6210\u7acb\uff0cΦ1=Φ2\uff0c\u5373\u8026\u5408\u5230 Ns \u7684\u78c1\u901a\u4e0d\u53d8\uff0c\u6f0f\u611f\u4e0d\u53d8\u3002

\n3. \u589e\u52a0\u6c14\u96993\uff0cR1  

\n

\n\u8865\u5145\u8bf4\u660e <\/span><\/span><\/strong>

\n\u672c\u5e16\u65e8\u5728\u8bf4\u660e\u53d8\u538b\u5668\u6f0f\u611f\u4e0e\u6c14\u9699\u5927\u5c0f\u7684\u5173\u7cfb\uff0c\u4e0d\u80fd\u7b80\u5355\u8bf4\u589e\u5927\u3001\u51cf\u5c0f\u6216\u8005\u4e0d\u53d8\uff0c\u5f97\u6839\u636e\u5177\u4f53\u7684\u7ed5\u7ec4\u7ed3\u6784\uff0c\u78c1\u82af\u7ed3\u6784\u6765\u5206\u6790\u3002<\/r3\uff0cφ1<φ2\uff0c\u5373\u8026\u5408\u5230><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

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