Search results
Results from the WOW.Com Content Network
Woolrich Generator, the earliest electrical generator used in an industrial process. [3] 1845: German physicist Gustav Kirchhoff developed the two laws now known as Kirchhoff's Circuit laws. 1850: Belgian engineer Floris Nollet invented (and patented) a practical AC generator. 1851: Heinrich Daniel Ruhmkorff developed the first coil, which he ...
A magnetohydrodynamic generator directly extracts electric power from moving hot gases through a magnetic field, without the use of rotating electromagnetic machinery. MHD generators were originally developed because the output of a plasma MHD generator is a flame, well able to heat the boilers of a steam power plant .
Voltages used for electric power transmission increased throughout the 20th century. [50] The first "high voltage" AC power station, rated 4-MW 10-kV 85-Hz, was put into service in 1889 by Sebastian Ziani de Ferranti at Deptford, London. [33] The first electric power transmission line in North America operated at 4000 V.
Steam turbine generator: The first commercial Westinghouse steam turbine-driven generator, a 1,500 kW unit, began operation at Hartford Electric Light Co. in 1901. The machine, nicknamed Mary-Ann , was the first steam turbine generator to be installed by an electric utility to generate electricity in the US.
"Dynamo Electric Machine" (end view, partly section, U.S. patent 284,110) A dynamo is an electrical generator that creates direct current using a commutator.Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current ...
The doubly fed generator rotors are typically wound with 2 to 3 times the number of turns of the stator. This means that the rotor voltages will be higher and currents respectively lower. Thus in the typical ±30% operational speed range around the synchronous speed, the rated current of the converter is accordingly lower which leads to a lower ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A simple electromagnet, consisting of an insulated wire wound around an iron core. An electric current passing through the wire creates a Magnetic field, with a north pole at one end and a south pole at the other. The first application of electricity that was put to practical use was electromagnetism. [18]