一台直流他励电机，n0=1500r/min，nN=1450r/min，T L=0.8T N，求电动
有一台他励直流电动机，已知Un=220v,In=53.8A，...
\u4e00\u53f0\u76f4\u6d41\u7535\u52a8\u673a\u989d\u5b9a\u6570\u636e\u4e3a\uff1a\u989d\u5b9a\u529f\u7387Pn=17kw \u989d\u5b9a\u7535\u538bUn=220V\uff0c\u989d\u5b9a\u8f6c\u901fnN=1500r/min\uff0c\u989d\u5b9a\u6548\u7387\u03b7N=0.83\uff0c
\u989d\u5b9a\u8f93\u5165\u529f\u7387=20.5KVA
\u7535\u6d4193A
\uff081\uff09\u76f4\u63a5\u542f\u52a8\u7535\u6d41=Un/Ra=220/0.7=314A\uff1b\u542f\u52a8\u7535\u963b=Un/2In-Ra=220/2*53.8-0.7=1.34\u03a9\u3002
\uff082\uff09\u7a33\u5b9a\u540e\u7684\u8f6c\u901f=1500/2=750r/min\u3002
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U=Ea+Ia*Ra，T=Cm*磁链*Ia， TL=0.8Tn，所以Ia=0.8IN，依据U=Ea+Ia*Ra公式的变形
n=n0-Ra*Ia/Ce/磁链，所以有1500=1450+x，x=50； 1500=n+50*0.8，所以n=1460r/min
涓鍙扮洿娴佷粬鍔辩數鏈,n0=1500r/min,nN=1450r/min,T L=0.8T N,姹傜數鍔
绛旓細worried to help make it possible for subordinates will not abide by the prerequisites; employ extent connected with jobs to help subordinates. Pay back suitable boss means to help that special someone likes and dislikes or maybe pay back beneficial enthusiasts learn them directly; ...
涓鍙颁粬鍔辩洿娴佺數鍔ㄦ満鏁版嵁涓:Pn=7.5KW,Un=110V,In=79.84A,杞烴n=150...
绛旓細鐢垫満鐨勯熷害n=U/(Ke*桅)-(Ra+Rpa)*T/(Ke*Kt*桅^2)锛圱涓鸿礋杞斤級閫氳繃棰濆畾鐨勫伐浣滄暟鎹彲浠ユ帹鍑轰覆鍏ョ數闃诲悗鐨勫伐浣滄儏鍐点
涓鍙Z4绯诲垪浠栧姳鐢靛姩,UaN=440V,IaN=190A,nN=1500r/min(姹傝В绛旇繃绋)_鐧惧害...
绛旓細鏈鐩殑鏄负浜嗗涔浠栧姳鐢靛姩鏈鐨勪汉涓虹壒鎬с侹肖=锛圲aN-Ra*IaN锛/nN=锛440-0.24*190锛1500=0.263 n0=UaN/锛圞肖锛=1673.6
濡傚浘,浠栧姳鐩存祦鐢靛姩鏈虹殑棰濆畾鏁版嵁涓篜N=54kW,UN=220V,IN=270A,nN=1150r/...
绛旓細Ra=(UN*IN-PN)/Ia^2=2/27=0.0074 惟 (鍏朵腑N鏄笅鏍)Ke*桅N=(UN-IN*Ra)/nN=(220-270*2/27)/1150=200/1150=0.174 (鍏朵腑N鏄笅鏍)褰揟0=0鏃讹紝绌鸿浇杞n0=UN/(Ke*桅N)=220/0.174=1264.37 r/min (鍏朵腑N鏄笅鏍)鐩寸嚎鏂圭▼锛氱敱鍏紡n=U/(Ke*桅)-Ra*T/(Ke*kt*桅^2) ...
浠栧姳鐩存祦鐢靛姩鏈虹殑璋冩暣鏂规硶鏈夊摢鍑犵?
绛旓細鐩存祦鐢靛姩鏈虹殑鏈烘鐗规</FONT>鐩存祦鐢靛姩鏈烘寜鍔辩鏂瑰紡涓嶅悓鍙垎涓轰粬鍔便佸苟鍔便佷覆鍔卞拰澶嶅姳鍥涚銆備笅闈竴甯哥敤鐨勪粬鍔卞拰骞鍔辩數鍔ㄦ満涓轰緥浠嬬粛鍏舵満姊扮壒鎬с佽捣鍔ㄣ佸弽杞拰璋冮锛屼粬鍔鍜屽苟鍔辩數鍔ㄦ満鍙槸杩炴帴鏂瑰紡涓婄殑涓嶅悓锛屼袱鑰呯殑鐗规ф槸涓鏍风殑銆傘 鐩存祦鐢垫満鐨勬帴绾垮浘鍥炬槸浠栧姳鍜屽苟鍔辩洿娴鐢靛姩鏈虹殑鎺ョ嚎鍘熺悊鍥俱備粬鍔...
姹涓鍙颁粬鍔辩洿娴佺數鍔ㄦ満:Pn=30KW,UN=220V,IN=158.8A, nN =1000r/m
绛旓細姹涓鍙颁粬鍔辩洿娴佺數鍔ㄦ満:Pn=30KW,UN=220V,IN=158.8A,nN=1000r/min,Ra=0.1惟,璇曟眰:(1)鐢垫灑鐢靛娍Ea(2)棰濆畾杞煩TN(3)绌鸿浇杞n0(4)TL=0.8TN,绋冲畾杩愯鐨勮浆閫;(5)TL=0.8TN,鐢垫灑鍥炶矾涓插叆0.3惟... 姹備竴鍙颁粬鍔辩洿娴佺數鍔ㄦ満:Pn=30KW,UN=220V,IN=158.8A, nN =1000r/min,Ra=0.1惟,璇曟眰:(1) 鐢垫灑鐢靛娍Ea...
涓轰粈涔堝湪鐩存祦浠栧姳鐢靛姩鏈鐢垫灑鍥炶矾涓茶仈鐢甸樆涓嶅奖鍝n0 涓轰粈涔堜覆鍏ョ數闃昏秺澶...
绛旓細鐩存祦鍙鍔辩數鍔ㄦ満鐢垫灑鍥炶矾涓覆鑱旂殑鐢甸樆涓嶄細褰卞搷n0锛鍥犱负瀹冩槸涓绉嶆亽瀹氱殑纾佸満锛屼笉浼氶殢鐫澶栭儴鏉′欢鐨勫彉鍖栬屽彂鐢熷彉鍖栥傝屼笖锛屽綋涓插叆鐢甸樆瓒婂ぇ鏃讹紝鏈烘鐗规т篃浼氶殢涔嬭屽彉鍖栥傝繖鏄洜涓哄綋鐢甸樆澧炲ぇ鏃讹紝浠庡姳纾佺數婧愭祦杩囩殑鐢垫祦灏变細鍑忓皯锛涜屽噺灏戜簡浠庡姳纾佺數婧愭祦鍑哄幓鐨勭數娴佷篃鎰忓懗鐫浜х敓鐨勫惛寮曞姏涔熼殢涔嬪噺寮便傛墍浠ワ紝鏈鍚庡搴斿埌...
浠栧姳鐩存祦鐢垫満鐞嗘兂绌鸿浇杞熷拰瀹為檯绌鸿浇杞熸湁浠涔堝尯鍒,濡備綍璁＄畻
绛旓細绌鸿浇杞 浣滀负浼烘湇鐢垫満鐨勫弬鏁帮紝鎸囩殑鏄己鏈嶇數鏈哄湪鐢电杞煩涓0鐨勬椂鍊欑殑杞燂紝涔熸槸鐢垫満鐨勬渶澶ц浆閫熴傚钩鏃跺緢闅捐揪鍒拌繖涓爣鍑嗙殑銆傜┖杞借浆閫熸瘮鍚屾杞熺暐浣庯紝杩欏氨鏄紓姝ョ數鏈虹殑杞樊鐜囷紱鐩存祦鐢垫満娌℃湁鍚屾杞燂紝鍏跺畾瀛愮粫缁勪笌鐢垫灑缁曠粍鐩镐簰浣滅敤涓嬫棆杞紝鐢垫灑鐨勬崲鍚戝櫒鎺ョ嚎绔秺澶氾紝杞熻秺楂樸
鐩存祦 鐢垫満 鍥為鍒跺姩 鐢垫祦鎬庝箞娴佸悜鐢垫簮鐨
绛旓細濡傛灉閲囩敤H妗ラ┍鍔ㄧ殑璇濓紝鍙互瀹炵幇鑳介噺鍥為锛屽洖棣堢殑鑳介噺濡傛灉涓嶅ぇ锛屽彲浠ョ洿鎺ュ瓨鍌鐩存祦姣嶇嚎涓婄殑鍌ㄨ兘鍏冧欢鐢佃В鐢靛涓紝鐒跺悗鍦ㄧ數鏈虹數鍔ㄧ姸鎬佸湪鑷繁娑堣楋紱濡傛灉鏈夊鍙扮數鏈鍏辩洿娴佹瘝绾锛屼竴鍙鍒跺姩澶勪簬鍙戠數鐘舵侊紝鍙互渚涘叾浠栫殑鐢垫満娑堣楋紱闄ら潪鑳介噺鐗瑰埆宸ㄥぇ鐨勬墠浼氶夋嫨鍥為鐢电綉锛屽洜涓虹數缃戝鐢佃兘鐨勮川閲忓拰鏁伴噺閮芥湁寰堥珮瑕佹眰锛屾垚鏈お楂橈紝...
浠栧姳鐩存祦鐢垫満鐞嗘兂绌鸿浇杞熷拰瀹為檯绌鸿浇杞熸湁浠涔堝尯鍒,濡備綍璁＄畻
绛旓細鐞嗘兂绌鸿浇杞燂細n0=U/Ce桅锛涘疄闄呯┖杞借浆閫燂細n=(U-I0Ra)/Ce桅锛涗簩鑰呯浉宸竴涓┖杞界數鏋㈢數鍘嬮檷
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