Electric generator
In electricity generation, a generatoris a device that converts motive power (mechanical energy) into electrical power for use in an external circuit. Sources of mechanical energy include steam turbines, gas turbines, water turbines, internal combustion engines, wind turbines and even hand cranks. The first electromagnetic generator, the Faraday disk, was invented in 1831 by British scientist Michael Faraday. Generators provide nearly all of the power for electric power grids.
The reverse conversion of electrical energy into mechanical energy is done by an electric motor, and motors and generators have many similarities. Many motors can be mechanically driven to generate electricity; frequently they make acceptable manual generators.
AC Generator
An alternator is a type of generator that converts mechanical energy into electrical energy in the form of alternating current.
Development history
- When electromagnetic induction was discovered, the method of generating alternating current was known. The early finished products were developed by Michael Faraday and Polit Pixi.
- In 1866, Werner von Siemens proposed the working principle of the generator, and an engineer from Siemens completed the first human alternator.
- In 1882, British electrician James Gordon built a large two-phase alternator. Lord Kelvin and Sebastian Ferranti developed early alternators with frequencies ranging from 100 Hz to 300 Hz.
- In 1891, Nikola Tesla obtained a patent for a ''high frequency'' (15,000 Hz) alternator.
- After 1891, multi-phase alternators were used to supply electric current. After that, the alternating current frequency of alternators was usually designed to be between 16 Hz and 100 Hz, and used with arc lamps, incandescent lamps or electric motors
When the magnetic field around the conductor changes, an induced current is generated in the conductor. Normally, a rotating magnet is called a rotor, and a fixed set of conductors wound in a coil on an iron core is called a stator. When it crosses the magnetic field, it generates current.
DC generator
- In 1866, Werner von Siemens and other engineers from Siemens invented the first DC generator.
- 1882: Edison Electric Light Company established the third power station in London, installed three 110-volt DC generators, which can supply power for 1,500 16-watt incandescent lamps.
With the popularity of alternating current, large direct current generators have become history. [Source request] Now, if DC power is needed, a rectifier will be used to rectify AC power into DC power.
Source from : Wikipedia
在公元1831年，法拉迪第将一个封闭电路中的导线通过电磁场，导线转动有电流流过电线，法拉第因此了解到电和磁场之间有某种紧密的关连，他建造了第一座发电机原型，其中包括了在磁场中迥转的铜盘，此发电机产生了电力。在此之前，所有的电皆由静电机器和电池所产生，而这二者均无法产生巨大力量。但是，法拉第的发电机终于改变了一切。
Source from : Wikipedia
在公元1831年，法拉迪第将一个封闭电路中的导线通过电磁场，导线转动有电流流过电线，法拉第因此了解到电和磁场之间有某种紧密的关连，他建造了第一座发电机原型，其中包括了在磁场中迥转的铜盘，此发电机产生了电力。在此之前，所有的电皆由静电机器和电池所产生，而这二者均无法产生巨大力量。但是，法拉第的发电机终于改变了一切。
交流
交流是的一，它可械能成交流流形式的能。
展史
• 了磁感後，生交流流的方法被得。早期的成品由可·法拉第波利特·皮克西等人出。
• 1866年，··西子提出了的工作原理，由西子公司的一名工程完成了人第一台交流。
• 1882年，英工詹姆斯·戈登建造了大型相交流。文爵塞巴斯蒂安·蒂早期交流，率介於100赫至300赫之。
• 1891年，尼古拉·特斯拉取得了「高率」（15,000赫）交流的利。
• 1891年後，多相交流被用供流，此後的交流的交流流率通常在16赫至100赫，搭配弧光、白或使用。
周的磁生化，感流在中生。通常情下，旋磁子，在一芯上的圈的固定，定子，其跨越磁，便生流。
直流
直流是的一，它可械能成直流的。
• 1866年，··西子西子公司其他工程明了人第一台直流。
• 1882年：迪生公司在敦建立了第3座站，安了3台110伏特直流，可150016瓦的白供。
著交流的普及，大型直流已成史。[源求]在，如果需要直流，利用整流器把交流整流成直流。
资料来源 ： 维基百科
US 7296 
GB 6436 
AU 5772 
CA 5685 
IE 3999 
NZ 2270 
BR 1072 
CN 889 
