单相异步电机的技术发展和应用毕业论文外文翻译.doc

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1、附录A英文参考文献Technology development and application of single-phase asynchronous motorAs everyone knows, the operating characteristics of single-phase asynchronous motor asymmetry, the theoretical analysis, design and calculation are far better than GA complex three-phase asynchronous motor. Even for th

2、e most simple single-phase capacitor motor with double construction group, operating characteristics depend on the manual accounting and its complete is difficult, not to mention the connection of other complex. So, although the tapped control single-phase capacitor motor products before has been po

3、pular in the United states. However, analysis and calculation has been reported about the quantitative. Until the 70s, was initially by the Cyrl G.V einott in the calculation conditions to complete. Since then, along with the computer in the national popularity, from 1975 to 1985 about ten years, do

4、mestic and foreign single-phase capacitor motor performance of the tap speed-regulating analysis and calculation of the article, like bamboo shoots after a spring rain generally emerge, so that the motor has been widely used in different occasions. Due to the rapid development of electronic technolo

5、gy, greatly affect and change the structure and properties of some matched with single-phase asynchronous electric Yu Xiang parts. It is worth mentioning that the centrifugal adopting traditional switch may be PT O components and new electronic starting devices (such as Sinpac SW itch products like

6、4 is replaced by. In addition, the development of electronic technology, the advent of the electronic voltage regulator, various types of load regulator, converter and inverter. The characteristics of its low price, excellent performance, reliable operation, the single-phase asynchronous motor is po

7、ssible from the motor generator simple product to product developmentFrom the single-phase asynchronous motor application perspective, some varieties of technology has matured, importance should be attached to its popularization and application. Until this century 80 time, almost all types of single

8、-phase asynchronous motor are confined to running as a motor way. In recent years, the development of small hydropower resources, wind resources and biogas energy called reusable (R enew able) energy process, in order to solve the remote area electricity demand, find small single-phase asynchronous

9、generator has the advantages of small volume, simple structure, convenient manufacturing advantages, attention to tradition, there are two asynchronous generator big questions need these two problems of asynchronous generator static excitation capacitor voltage stability problem has been the develop

10、ment of fir Yo with capacitor and electronic technology is solved. While running from the theory of single-phase asynchronous generator itself, theI theory and practice of three-phase asynchronous motor based on, as long as the rotor single-phase capacitor induction motor speed, making it more than

11、the synchronous speed, naturally reach the generator operation state but, this simple inference is not valid for the single-phase asynchronous generator. According to the characteristics of the generator operating income is very poor, this may also affect a reason for its application.In 1984, the Un

12、ited States E, C. Boardman and other research results presented in the paper, make people break through the traditional prejudice, inspire the motor operation mode of single-phase capacitor type enthusiasm. . The results can greatly improve the performance of the single-phase asynchronous motor and,

13、 paving the way for its application. Can be seen from table 1, single-phase asynchronous motor performance with single phase synchronous generator compared to the United States, and the center height decreased; plus the node peach Li process much more simple, convenient, this type of generator is ve

14、ry promising.Long-term since, because of single-phase asynchronous motor is only applied in household appliances and medical devices, so the capacity is generally not more than 1 horsepower, often called fractional horsepower motors but, it does not draw such a conclusion, namely single-phase asynch

15、ronous motor or impossible to the United States of America agricultural electricity as an example the whole horsepower motor excellent output performance students, because the three-phase power supply line is expensive, and the farm and far away from the center of supply, between farms far apart, ea

16、ch farm needs to load is not heavy, so in order to reduce lineCost, almost all the single-phase power supply so to solve in the single-phase agricultural mobility problems, since the 70s oil crisis, due to rising oil prices, from the book and turn to the motor too. In the past, due to the lack of a

17、single-phase motor, adopt various single three phase change heat exchanger, since with three-phase asynchronous motor side of rabbit in 80, the design and manufacture of 17 soft start technology problem of large capacity single-phase capacitor type electric drive, so it is more and more widely used.

18、 The capacity of up to 100 horsepower.According to Chinas agricultural situation, many remote Agricultural Pastoral Areas in the construction of John electric line, will also use single-phase John undoubtedly in the economy has taken a few besides, encounter this kind of problem by using small hydro

19、, wind and biogas energy generation, when its capacity is less than 20K W C8) using single phase power more convenient. So, in order to solve the rural irrigation, oil, rice milling and other dynamic problems, the whole horsepower single-phase asynchronous motor will become an indispensable product.

20、Linked to the question, the motor products in China can be considered multi-function asked Eritrea in Siemens company products of three-phase asynchronous motor in the sample, indicating that the companys three-phase asynchronous electric turn Us run in the three-phase power grid, can also run on si

21、ngle-phase power grid can be used as motor operation;, but also as a generator. And draw the wiring diagram and the corresponding list of the matters needing attention in using. This current to our country product variety is not all, also can yet be regarded as an alternative to do.For a century, mo

22、re and more varieties of single-phase asynchronous motor. While most of these are achieved by using a variety of winding connection, but little change in motor. However, 8 () generation time, parameters of the motor of Japans Koichi proposed by Murakami (P.arametric M otor) is a novel motor accordin

23、g to the authors argument, except in the motor starting principle with MI plan consists of divination, the steady operation theory and single-phase asynchronous motor - Peng 81. Because of the motor stator is slotless structure, motor manufacturing diameter smaller more easily. According to the intr

24、oduction, if the production and electronic tuner to match, in the small device (such as high-speed rotation of the centrifugal separator, separator) get application etc.Therefore, with the development of science and technology, will promote the development of new types of single-phase asynchronous m

25、otor, the species will become more and more, will be more and more extensive application.附录B英文参考文献翻译单相异步电机的技术发展和应用众所周知，由于单相异步电动机不对称运行特点，使其理论分析、设计计算都远比三相异步电机嘎杂。即使对最简单的单相双建恕组电容式电动机，要靠手工核算其完整的运行特性是相当困难的事，更不用说其它各种复杂的接线方式了。所以，尽管抽头式调速单相电容式电动机产品早在以前已在美国流行。但是，有关的定量分析计算却迟迟未见报道。直到70年代，才最初由Cyrl G .V einott在采用计

26、算条件下得以完成。自此以后，随着计算机在各国普及，从1975一1985年约十年期间，国内外有关抽头调速的单相电容式电动机性能分析和计算的文章、像雨后春笋一般涌现出来，使这些电机在不同的场合下得到广泛应用。由于电子技术的快速发展，大大影响和改变一些与单相异步电动御湘配套的零部件的结构和性能。其中值得指出的是传统上采用的离心式开关可能被PT O元件和新型的电子起动装置(例如Sinpac sw itch那样的产品4所取代。此外，电子技术的发展，使得多种型式的电子式电压调节器、负荷调节器、变换器和变频器等问世。其价格低廉、性能优良、运行可靠的特点，使单相异步电机从单纯的电动机产品向发电机产品发展成为可

27、能。从单相异步电动机应用方面来看，有些品种的技术已经成熟、应该重视其推广和应用。直到本世纪80年代，几乎所有型式的单相异步电机都是局限于作为电动机方式运行。近年来，国内外在开发小型水力资源、风力资源和沼气能等所谓可重复使用(R enew able)能源过程中，为解决边远地区用电需求，发现小型单相异步发电机具有体积小、结构简单、制造方便等优点，受到重视传统上，异步发电机存在两大问题需要静止励磁电容器异步发电杉哟电压稳定问题这二个问题已随电容器和电子技术的发展而被解决。而从单相异步发电机本身的运行理论来看，以往人I基于三相异步电机的理论与实践，认为只要将单相电容式异步电动机的转子加速，使其超过同步

28、转速，就自然达到发电机运行状态可是，这种简单的推论对单相异步发电机来说是不正确的。根据这种方式所得的发电机运行特性很差，这可能也是影响其应用的一个原因。1984年、美国E, C. Boardman等论文中提出的研究成果，使人们突破了传统的偏见，激发起研究单相电容式电机运行方式特点的热情”。结果大大提高了单相异步发电动机运行性能，为其应用铺平道路。由表1可见，单相异步发电动机性能可以跟单相同步发电机相比美，而中心高有所降低;再加上结桃加工工艺远为简单、方便，该种型式发电机很有发展前途。长期以来，由于单相异步电动机仅在家用电器和医疗器械等方面应用，因而其容量一般不超过1马力，常称分马力电动机但是，

29、由此并不能得出这样的结论，即单相异步电动机需要或者不可能生产出性能优良的整马力电动机以美国农业用电为例，由于三相供电线路造价昂贵，而农场又大都远离供电中心，农场之间相隔较远，每个农场需要的负荷相对来说并不重，因而为了降低线路的造价，几乎都采用单相供电so为了解决在单相电网下农业机动力问题,70年代石油危机以来，由于油价上涨，从采用内嫌书琳而求助于电动机过去，由于缺乏单相电动机，大都采用各种单一三相变换器，配以三相异步电动机方兔80年代以来，解决了设计制造软起动较大容量单相电容式电动御17技术难题，因而其应用的场合越来越广泛。单机容量也高达100马力。根据我国农具体情况，许多边远农林牧区等在建造

30、翰电线路时，同样会遇到这种问题采用单相翰电无疑在经济上具有可取之几除此之外，利用小型水力，风力和沼气能等资源发电，当其容量小于20k W时C8)采用单相发电更为简便。这样，为了解决农村在灌溉、榨油、碾米磨粉等动力问题时，整马力单相异步电动机必将成为不可缺少的产品。与上述问题有联系，我国的电机产品也可考虑“一机多能”的问厄在西门子公司的三相异步电动机产品样本中，标明该公司的三相异步电动翻U氏能在三相电网下运行，也能在单相电网下运行;既能作为电动机运行，又能作为发电机运行。并画出相应的接线图和列出使用时的注意事项。这对我国目前产品品种不全的情况，也不失为一种替代的办饰。一个世纪以来，单相异步电动机品种越来越多。虽然其中大部分是通过采用各种各样绕组连接方式来达到的，但电动机的变化不大。但是，8()代以来，日本的Koichi Murakami等提出的参数电动机(P.arametric M otor)确是一种新颖结构的电机据本文作者的论点，该电机除在起动原理上有特咪划妙卜，其稳态运行理论与单相异步电动机-彭81。由于该电机定子为无槽结构，使加工制造内径较小的电机更为容易。据介绍，该产品若与电子调频器相配，则在要求高速旋转的小型装置(如离心式分离机、脱水器)等方面得到应用。由此可见，随着科学技术的发展，将推动各种新型单相异步电动机研制，其品种将越来越多，应用也将越来越广泛。. .此处忽略！