有一台三相异步电动机额定功率为28kW，电压380V，50Hz，额定转速950r/min，,铜耗及铁耗共2.2kW…… 亲帮帮忙，，今有Y-132M-6型三相异步电动机一台，额定数...
\u6709\u4e00\u53f0\u4e09\u76f8\u5f02\u6b65\u7535\u52a8\u673a\u989d\u5b9a\u529f\u7387\u4e3a28kW\uff0c\u7535\u538b380V\uff0c50Hz\uff0c\u989d\u5b9a\u8f6c\u901f950r/min\u540c\u6b65\u8f6c\u901fn1=60f/p=3000/3=1000r/min\uff0cs=\uff08n1-n\uff09/n1\uff1b\u6548\u7387=\u6709\u529f\u529f\u7387\u9664\u4ee5\u603b\u529f\u7387\u3002
\u540c\u6b65\u8f6c\u901fn1=60f/p=3000/3=1000r/min\uff0c\u8f6c\u5dee\u7387s=(n1-n)/n1=(1000-950)/1000=0.05\uff1b\u6548\u7387\u03b7=Pn/(Pn+\u0394P)\u00d7100\uff05=28/\ufe5928+2.2+1.1+0.186)\u00d7100\uff05=89\uff05\u3002
\u4e09\u76f8\u4ea4\u6d41\u5f02\u6b65\u7535\u52a8\u673a\u7684\u6548\u7387\u8d8a\u9ad8\uff0c\u5176\u8f6c\u5dee\u7387\u8d8a\u5c0f\u3002\u4e5f\u5373\u5728\u989d\u5b9a\u9891\u7387\u4e0e\u7535\u538b\u4e0b\uff0c\u76f8\u540c\u8d1f\u8f7d\u7684\u8f6c\u901f\u8d8a\u9ad8\u3002\u5bf9\u4e8e\u67d0\u4e9b\u529f\u7387\u4e0e\u8f6c\u901f\u6210\u6b63\u6bd4\uff0c\u751a\u81f3\u6210\u9ad8\u6b21\u65b9\u6bd4\u7684\u8d1f\u8f7d\u6765\u8bf4\uff0c\u4e5f\u5c31\u610f\u5473\u7740\u7535\u52a8\u673a\u7684\u8f93\u51fa\u529f\u7387\u7684\u63d0\u9ad8\u3002
\u53cd\u8fc7\u6765\u8bf4\uff0c\u4f4e\u6548\u7387\u7535\u52a8\u673a\u56e0\u5176\u8f6c\u5dee\u7387\u7684\u589e\u5927\u800c\u4f7f\u8d1f\u8f7d\u8f6c\u901f\u4e0b\u964d\uff0c\u5c31\u53ef\u4f7f\u7535\u52a8\u673a\u7684\u8f93\u51fa\u529f\u7387\u51cf\u5c11\uff0c\u4ece\u800c\u8fbe\u5230\u8282\u7535\u76ee\u7684\u3002
\u4e09\u76f8\u5f02\u6b65\u7535\u52a8\u673a\u5de5\u4f5c\u539f\u7406\uff1a
\u7535\u52a8\u673a\u5de5\u4f5c\u539f\u7406\u4e3a\uff1a\u5f53\u7535\u52a8\u673a\u7684\u4e09\u76f8\u5b9a\u5b50\u7ed5\u7ec4\uff0c\u901a\u5165\u4e09\u76f8\u5bf9\u79f0\u4ea4\u6d41\u7535\u540e\uff0c\u5c06\u4ea7\u751f\u4e00\u4e2a\u65cb\u8f6c\u78c1\u573a\uff0c\u8be5\u65cb\u8f6c\u78c1\u573a\u5207\u5272\u8f6c\u5b50\u7ed5\u7ec4\uff0c\u4ece\u800c\u5728\u8f6c\u5b50\u7ed5\u7ec4\u4e2d\u4ea7\u751f\u611f\u5e94\u7535\u6d41\uff0c\u8f7d\u6d41\u7684\u8f6c\u5b50\u5bfc\u4f53\u5728\u5b9a\u5b50\u65cb\u8f6c\u78c1\u573a\u4f5c\u7528\u4e0b\u5c06\u4ea7\u751f\u7535\u78c1\u529b\uff0c\u4ece\u800c\u5728\u7535\u673a\u8f6c\u8f74\u4e0a\u5f62\u6210\u7535\u78c1\u8f6c\u77e9\uff0c\u9a71\u52a8\u7535\u52a8\u673a\u65cb\u8f6c\uff0c\u5e76\u4e14\u7535\u673a\u65cb\u8f6c\u65b9\u5411\u4e0e\u65cb\u8f6c\u78c1\u573a\u65b9\u5411\u76f8\u540c\u3002
\u57fa\u672c\u7ed3\u6784\uff1a
\u4e09\u76f8\u5f02\u6b65\u7535\u52a8\u673a\u7531\u56fa\u5b9a\u7684\u5b9a\u5b50\u548c\u65cb\u8f6c\u7684\u8f6c\u5b50\u4e24\u4e2a\u57fa\u672c\u90e8\u5206\u7ec4\u6210\uff0c\u8f6c\u5b50\u88c5\u5728\u5b9a\u5b50\u5185\u8154\u91cc\uff0c\u501f\u52a9\u8f74\u627f\u88ab\u652f\u6491\u5728\u4e24\u4e2a\u7aef\u76d6\u4e0a\u3002\u4e3a\u4e86\u4fdd\u8bc1\u8f6c\u5b50\u80fd\u5728\u5b9a\u5b50\u5185\u81ea\u7531\u8f6c\u52a8\uff0c\u5b9a\u5b50\u548c\u8f6c\u5b50\u4e4b\u95ee\u5fc5\u987b\u6709\u4e00\u95f4\u9699\uff0c\u79f0\u4e3a\u6c14\u9699\u3002\u7535\u52a8\u673a\u7684\u6c14\u9699\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u53c2\u6570\uff0c\u5176\u5927\u5c0f\u53ca\u5bf9\u79f0\u6027\u7b49\u5bf9\u7535\u52a8\u673a\u7684\u6027\u80fd\u6709\u5f88\u5927\u5f71\u54cd\u3002
\u662f\u4e09\u76f86\u6781\u5f02\u6b65\u7535\u673a\uff1b\u529f\u738740\u5343\u74e6\uff1b\u989d\u5b9a\u7535\u538b380\u4f0f\uff1b\u8f6c\u901f\u6bcf\u5206950\u8f6c\uff1b\u6548\u738784%\u00b7\u00b7\u00b7\u00b7\u00b7\u00b7\u3002
1、同步转速n1=60f/p=3000/3=1000r/min转差率s=(n1-n)/n1=(1000-950)/1000=0.05
2、效率η=Pn/(Pn+ΔP)×100％=28/﹙28+2.2+1.1+0.186)×100％=89％
3、定子电流In=﹙28+2.2+1.1+0.186)/1.732/0.38/0.85/0.89=63.2A 设功率因数为0.85
s=（n1-n）/n1 效率=有功功率除以总功率 额定电流按照功率的公式推倒
绛旓細棰濆畾杞煩=(55/975)x9550=538.7N.m
绛旓細锛1锛夌數鍔ㄦ満鐨勭鏋佸鏁癙涓哄灏戯紵---纾佹瀬瀵规暟P=2锛涳紙2锛夌數鍔ㄦ満鎺ヤ簬380V鐢垫簮鏃讹紝瀹氬瓙缁曠粍搴旈噰鐢ㄤ粈涔堟帴娉曪紵---瀹氬瓙缁曠粍鎺ユ硶搴旂湅閾墝锛屽亣濡備笂闈㈡爣鏈夛細380/220V Y/螖 鍒欏簲閲囩敤Y鎺ユ硶锛涳紙3锛鐢靛姩鏈洪瀹杩愯鏃惰緭鍏鍔熺巼涓澶氬皯锛---杈撳叆鍔熺巼Pr=Pc/畏=10/0.9=11.11KW銆
绛旓細鎵浠ワ紝鍙琚嫋鍔ㄧ殑璁惧鑳藉鎵垮彈鍏ㄥ帇鍚姩鐨勫啿鍑诲姏鐭╋紝鍚姩寮曡捣鐨勫帇闄嶄笉瓒呰繃鍏佽鍊硷紝灏卞簲璇ラ夋嫨鍏ㄥ帇鍚姩鐨勬柟寮忋傚叏鍘嬪惎鍔ㄧ殑缂虹偣鏄惎鍔ㄧ數娴佸ぇ锛岀鍨寮傛鐢靛姩鏈鐨勫惎鍔ㄧ數娴佷竴鑸负棰濆畾鐢垫祦鐨5锝8鍊嶏紝濡傛灉鐢靛姩鏈虹殑鍔熺巼杈冨ぇ锛岀數鍔ㄦ満鐨勫惎鍔ㄧ數娴佸皢浼氬紩璧烽厤鐢电郴缁熺殑鐢靛帇鏄捐憲涓嬮檷锛屽奖鍝嶆帴鍦ㄥ悓涓鏉′緵鐢电嚎璺笂鐨勫叾浠栫數姘...
绛旓細浣犲ソ锛氣斺斺槄1銆涓夌浉鐢靛姩鏈鐨棰濆畾鐢垫祦鍊兼槸锛鐢垫満鍔熺巼梅锛堝伐浣滅數鍘嬅楁牴鍙3脳鍔熺巼鍥犳暟脳鏁堢巼锛夆斺斺槄2銆佽绠380V銆2.2kW鐢靛姩鏈虹殑棰濆畾鐢垫祦锛岃鐭ラ亾鍔熺巼鍥犳暟銆佸拰鏁堢巼澶у皬銆備竴鑸儏鍐典笅锛屽湪鐢靛姩鏈虹殑閾墝涓婃湁鏍囨敞銆
绛旓細涓夌浉鐢垫満鐨鐢垫祦=5500/(1.7321*580*0.86)=9.7A 涓鑸畝鍗曚及绠楀彲浠ユ寜涓涓崈鐡2涓畨鍩.
绛旓細Y132S-4锛棰濆畾鍔熺巼涓5.5kw锛岄瀹氱數鍘嬩负380V锛岄瀹氱數娴佷负11.6A锛屼綘杩欐槸閾墝涓婄殑鏁版嵁锛屽疄闄呯敤鐢甸噺涓庡疄闄呰礋鑽锋湁鍏筹紝涔熷氨鏄疄闄呯數娴侊紝鏍规嵁瀹為檯鐢垫祦,1KW绾2A,5.5KW涓灏忔椂5.5搴,TH鑷繁娴嬮噺鍚
绛旓細s=60f/p(1-n) => n=1-p*s/60/f 鍏朵腑s涓虹數鏈鸿浆閫燂紝f涓虹數婧愰鐜囷紝p涓烘瀵规瀬鏁帮紝n涓鸿浆宸巼銆備粠杞熺湅锛屾鐢垫満涓4鏋佺數鏈猴紝瀵规瀬鏁颁负2.鏁呰浆宸巼n=1-p*s/60/f =1-2*1440/60/50 =0.04
绛旓細1銆涓夌浉寮傛鐢靛姩鏈鐨勯瀹氱數娴佺害绛変簬锛棰濆畾鍔熺巼锛圞W锛夋暟脳2锛圓锛夈2銆涓夌浉鐢垫満鐨鐢垫祦绮楃暐蹇熶及绠椾负姣廗W=2A锛岃绠楋細I=P/1.732/U/鍔熺巼鍥犳暟=90/1.732/0.38/0.78=175A銆3銆佹墍浠ワ紝90KW鐨勭數鍔ㄦ満鐨勯瀹氱數娴佺害绛変簬175A銆
绛旓細涓寸晫杞樊鐜嘢max灏鏄紓姝ョ數鏈(宸ヤ笟鐢ㄧ殑涓鑸兘鏄)鐨勬渶澶ц浆宸櫎浜庣悊鎯宠浆閫,Smax=(n0-n min)/n0,n0=60f/p,(鍙橀灏卞彲浠ユ敼鍙榥0,鏉ヨ皟閫),褰鐢垫満鐨璐熻浇杞煩澶т簬鐢垫満鐨凾m鏃,杞樊鐜囧ぇ浜庝复鐣岃浆宸巼浣跨數鏈烘棤娉曠ǔ瀹氳繍琛 涓夌浉浜ゆ祦鐢甸氬叆涓夌浉鐢靛姩鏈鐨勪笁涓粫缁勶紝鐢变簬姣忕浉鐢垫祦鍒拌揪鏈澶х灛鏃跺肩浉浣嶄笉鍚岋紝鍦ㄧ數鍔...
绛旓細鐢垫祦=鍔熺巼/鐢靛帇/1.732/鍔熺巼鍥犳暟/鏁堢巼 2200W/380V/1.732/0.8/0.8=5.2A
