Search results
Results From The WOW.Com Content Network
A cycloconverter (CCV) or a cycloinverter converts a constant amplitude, constant frequency AC waveform to another AC waveform of a lower frequency by synthesizing the output waveform from segments of the AC supply without an intermediate DC link (Dorf 1993, pp. 2241–2243 and Lander 1993, p. 181). There are two main types of CCVs, circulating ...
The tap converter is a variation on the cycloconverter, invented in 1981 by New York City electrical engineer Melvin Sandler and significantly functionally enhanced in 1982 through 1984 by graduate students Mariusz Wrzesniewski, Bruce David Wilner, and Eddie Fung.
A cycloconverter is also a type of frequency changer. Unlike a VFD, which is an indirect frequency changer since it uses an AC-DC stage and then a DC-AC stage, a cycloconverter is a direct frequency changer because it uses no intermediate stages. Another application is in the aerospace and airline industries. Often airplanes use 400 Hz power so ...
This plant was built between 1985 and 1990 and consists of three 15 MVA solid-state, cycloconverter-based modules. The system was built by ASEA and is similar technically to the converter later installed at Amtrak's Jericho Park converter.
A cycloconverter constructs an output, variable-frequency, approximately sinusoid waveform by switching segments of the input waveform to the output; there is no intermediate DC link. With switching elements such as SCRs, the output frequency must be lower than the input.
Cycloconverter powered machines can also run the turbines in pumped storage plants. [11] Today the frequency changer used in applications up to few tens of megawatts consists of two back to back connected IGBT inverters. Several brushless concepts have also been developed in order to get rid of the slip rings that require maintenance.
Figure 1. A simple diagram of synchronverter operation environment. Synchronverters or virtual synchronous generators [1] [2] are inverters which mimic synchronous generators (SG) [3] to provide "synthetic inertia" for ancillary services in electric power systems. [4]
Bimal Kumar Bose (Bengali: বিমল কুমার বসু; born 1932), also known as B. K. Bose, is an electrical engineer, artificial intelligence researcher, scientist, educator, and currently a professor emeritus of power electronics in the Department of Electrical Engineering and Computer Science at the University of Tennessee, Knoxville.