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交流电动机起动及软起动方法的研究

日期:2013-07-14来源:网络整理作者:论文代写点击次数:
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交流电动机起动及软起动方法的研究

摘 要:随着科学技术的发展,人类社会的生活发生了翻天覆地的变化,电动机作为一种可靠,方便,廉价的原动力,在人类社会的社会化大生产中扮演着重要地位,但是电动机在广泛应用,空前地提高了人们生活的同时也带来了诸多难以根本解决的问题,其中全球性的能源的短缺问题正成为近几十年制约经济发展的重要问题。
众所周知,电动机在完成电能与机械能之间的转换时,需要消耗大量的电能。我国目前中小型电机的效率普遍在85%~92%之间,如果能够将电动机的效率向上提高一个百分点,电动机的运行所带来的节能效应是非常明显的。就高压电机来说,全国大中型企业高压电机的总装机容量在1.5亿千瓦以上,每年新投入的高压电机总容量在500万千瓦左右,每年消耗在高压电动机上的能量约占全国总用电量的31.5%。如果全国都电动机都能提高一个百分点的效能,则相当于多建了15个30万千瓦的中等电站,这对一个发展中国家而已是有很积极意义的。
交流电动机软起动器作为电动机的配套设备,能够在交流电动机空负荷或者低负荷时,自动调节输入电动机的电压,而不会影响电动机的转距。软起动器一问世,便受到了从事于各个行业的生产企业欢迎,虽然目前在价格,性能等方面有一定困难,但是随着半导体器件制造技术的发展,可以预见在不远的将来,软起动器必将成为一种提高交流电动机应用深度的必要配套设备。
关键词:交流电动机;软起动器;晶闸管;8031单片机


 
AC electromotor start-up investigation and soft start-up investigation

ABSTRACT:In company with technological develops, humanity social life occurs earthshaking change. Electromotor by way of a sort of believable, convenient, cheaper  equipment, It personates a  important place at humanity social socialization big production
None the less electromotor be on the energy source’s shortage problem just became near few decade condition economic development’s import problem of extensive use.
As is well known, the switch time, need for expend substantive electrical energy to from of the truism, electromotor at complete at complete electrical energy and mechanical energy per compartment, it state for the moment middle electromechanical efficiency prevalence at 85% ~ 92% compartment. The installed gross capacity at 1.5 a hundred million kilowatt upwards of the in the event of in a position to should motor efficiency boom over high one percentage point, electromotor function station bring energy conservation effect dispute ordinary overt along. In high-tension machine came, nationwide cleanness defect type enterprise high-tension machine. the efficiency, then correspond to much construct know clearly fifteen loaf thirty myriad middling power station, this versus one extend nothing more yes have got very aggressive content into of the 32.5% of the per annum new devoted high-tension machine gross capacity at 500 myriad tile around , The annual expending on high-tension motor’s energy about which could provide nationwide overall power consumption. If the electromotor at big city in the nationwide would be able to up one percentage point.
Keywords:AC motor;soft start ware;thyristor;8031 SCM

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