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无功功率不但增加¾U¿æŸå’Œè®¾å¤‡çš„发热åQŒæ›´ä¸»è¦çš„是功率因数的降低导致电¾|‘有功功率的降低åQŒå¤§é‡çš„无功电能消耗在¾U¿èµ\当中åQŒè®¾å¤‡ä‹É用效率低下,‹¹ªè´¹ä¸¥é‡åQŒä‹É用变频调速装¾|®åŽåQŒç”±äºŽå˜é¢‘器内部滤æ‡L电容的作用,从而减ž®‘了无功损耗,增加了电¾|‘的有功功率ã€?br /> <br />   2、变频节èƒ?br /> <br />   变频器节能主要表现在风机、水æ³ëŠš„应用上。äؓ了保证生产的可靠性,各种生äñ”机械在设计配用动力驱动时åQŒéƒ½ç•™æœ‰ä¸€å®šçš„富余量。当甉|œºä¸èƒ½åœ¨æ»¡è´Ÿè·ä¸‹è¿è¡Œæ—¶åQŒé™¤è¾‘Öˆ°åŠ¨åŠ›é©±åŠ¨è¦æ±‚外,多余的力矩增加了有功功率的消耗,造成电能的浪贏V€‚风机、æ܇¾cȝ­‰è®‘Ö¤‡ä¼ ç»Ÿçš„调速方法是通过调节入口或出口的挡板、阀门开度来调节¾l™é£Žé‡å’Œ¾l™æ°´é‡ï¼Œå…¶è¾“入功率大åQŒä¸”大量的能源消耗在挡板、阀门的截流˜q‡ç¨‹ä¸­ã€‚当使用变频调速时åQŒå¦‚果流量要求减ž®ï¼Œé€šè¿‡é™ä½Žæ³‰|ˆ–风机的è{速即可满­‘Œ™¦æ±‚ã€?br /> <br />   电动æœÞZ‹É用变频器的作用就是äؓ了调速,òq‰™™ä½Žå¯åŠ¨ç”µ‹¹ã€‚äؓ了äñ”生可变的电压和频率,该设备首先要把电源的交流电变换äؓ直流ç”?DC)åQŒè¿™ä¸ªè¿‡½E‹å«æ•´æµã€‚把直流ç”?DC)变换ä¸ÞZº¤‹¹ç”µ(AC)的装¾|®ï¼Œå…¶ç§‘学术语äؓ“inverterâ€?逆变å™?。一般逆变器是把直‹¹ç”µæºé€†å˜ä¸ÞZ¸€å®šçš„固定频率和一定电压的逆变甉|ºã€‚对于逆变为频率可调、电压可调的逆变器我们称为变频器。变频器输出的æ‡L形是模拟正åëu波,主要是用在三相异步电动机调速用åQŒåˆå«å˜é¢‘调速器。对于主要用在äÈA器äÈA表的‹‚€‹¹‹è®¾å¤‡ä¸­çš„æ‡L形要求较高的可变频率逆变器,要对波åŞ˜q›è¡Œæ•´ç†åQŒå¯ä»¥è¾“出标准的正åëu波,叫变频电源。一般变频电源是变频器ä­h格的15--20倍。由于变频器讑֤‡ä¸­äñ”生变化的电压或频率的主要装置叫“inverter”,故该产品本èínž®Þp¢«å‘½åä¸ºâ€œinverter”,卻I¼šå˜é¢‘器ã€?br /> <br />   变频不是到处可以省电åQŒæœ‰ä¸å°‘场合用变频åƈ不一定能省电ã€?作äؓ电子电èµ\åQŒå˜é¢‘器本èín也要耗电(¾U¦é¢å®šåŠŸçŽ‡çš„3-5%)。一å?.5匹的½Iø™°ƒè‡ªèín耗电½Ž—下来也æœ?0-30W,相当于一盏长明灯. 变频器在工频下运行,å…ähœ‰èŠ‚电功能åQŒæ˜¯äº‹å®žã€‚但是他的前提条件是åQ?br /> <br />   ½W¬ä¸€ã€å¤§åŠŸçŽ‡òq¶ä¸”为风æœ?æ³ëŠ±»è´Ÿè²;<br /> <br />   ½W¬äºŒã€è£…¾|®æœ¬íw«å…·æœ‰èŠ‚电功èƒ?软äšg支持);<br /> <br />   ½W¬ä¸‰ã€é•¿æœŸè¿ž¾l­è¿è¡Œã€?br /> <br />   ˜q™æ˜¯ä½“现节电效果的三个条件。除此之外,无所谓节不节电,没有什么意义。如果不加前提条件的说变频器工频˜qè¡ŒèŠ‚能åQŒå°±æ˜¯å¤¸å¤§æˆ–是商业炒作。知道了原委åQŒä½ ä¼šåéy妙的利用他äؓ你服务。一定要注意使用场合和ä‹É用条件才好正¼‹®åº”用,否则ž®±æ˜¯ç›²ä»Žã€è½»ä¿¡è€Œâ€œå—骗上当”ã€?br /> <br />   3、èÊY启动节能<br /> <br />   甉|œº¼‹¬å¯åŠ¨å¯¹ç”늽‘造成严重的冲击,而且˜q˜ä¼šå¯¹ç”µ¾|‘容量要求过高,启动时äñ”生的大电‹¹å’Œéœ‡åŠ¨æ—¶å¯¹æŒ¡æ¿å’Œé˜€é—¨çš„损害极大åQŒå¯¹è®‘Ö¤‡ã€ç®¡è·¯çš„使用寿命极äؓ不利。而ä‹É用变频节能装¾|®åŽåQŒåˆ©ç”¨å˜é¢‘器的èÊY启动功能ž®†ä‹É启动甉|µä»Žé›¶å¼€å§‹ï¼Œæœ€å¤§å€ég¹Ÿä¸è¶…˜q‡é¢å®šç”µ‹¹ï¼Œå‡è½»äº†å¯¹ç”늽‘的冲å‡Õd’Œå¯¹ä¾›ç”µå®¹é‡çš„要求åQŒåšg长了讑֤‡å’Œé˜€é—¨çš„使用寿命。节省了讑֤‡çš„维护费用ã€?br /> <br />   从理è®ÞZ¸Šè®ÔŒ¼Œå˜é¢‘器可以用在所有带有电动机的机械设备中åQŒç”µåŠ¨æœºåœ¨å¯åŠ¨æ—¶åQŒç”µ‹¹ä¼šæ¯”额定高5-6倍的åQŒä¸ä½†ä¼šå½±å“ç”‰|œºçš„ä‹É用寿命而且消耗较多的电量.¾pȝ»Ÿåœ¨è®¾è®¡æ—¶åœ¨ç”µæœºé€‰åž‹ä¸Šä¼šç•™æœ‰ä¸€å®šçš„余量åQŒç”µæœºçš„速度是固定不变,但在实际使用˜q‡ç¨‹ä¸­ï¼Œæœ‰æ—¶è¦ä»¥è¾ƒä½Žæˆ–者较高的速度˜qè¡ŒåQŒå› æ­¤è¿›è¡Œå˜é¢‘改造是非常有必要的。变频器可实现电æœø™ÊY启动、补偿功率因素、通过改变讑֤‡è¾“入电压频率辑ֈ°èŠ‚能调速的目的åQŒè€Œä¸”能给讑֤‡æä¾›˜q‡æµã€è¿‡åŽ‹ã€è¿‡è½½ç­‰ä¿æŠ¤åŠŸèƒ½ã€?br /> <div> <br /> </div></p> </div> 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