galileo ferraris discovered the advantages of ac over dc.
galileo ferraris discovered the advantages of ac over dc.
who discovered the advantages of ac over dc?
galileo ferraris
bullet::::- direct current vs. alternating current: the 1880s saw the spread of electric based lighting with large utilities and manufacturing companies supplying it. the systems initially ran on direct current (dc) and alternating current (ac) with low voltage dc being used for interior lighting and high voltage dc and ac running very bright exterior arc lighting. with the invention of the ac transformer in the mid 1880s, alternating current could be stepped up in voltage for long range transmission and stepped down again for domestic use, making it a much more efficient transmission standard now directly competing with dc for the indoor lighting market. in the u.s. thomas edison's edison electric light company tried to protect its patent controlled dc market by playing on the public's fears of the dangers of high voltage ac, portraying their main ac competitor, george westinghouse's westinghouse electric company, as purveyors of an unsafe system, a back and forth financial and propaganda competition that came to be known as the war of currents. ac, with its more economic transmission would prevail, supplanting dc.
format war
dc link converters: dc link converters, also referred to as ac/dc/ac converters, convert an ac input to an ac output with the use of a dc link in the middle. meaning that the power in the converter is converted to dc from ac with the use of a rectifier, and then it is converted back to ac from dc with the use of an inverter. the end result is an output with a lower voltage and variable (higher or lower) frequency. due to their wide area of application, the ac/dc/ac converters are the most common contemporary solution. other advantages to ac/dc/ac converters is that they are stable in overload and no-load conditions, as well as they can be disengaged from a load without damage.
power electronics