Improvements in power semiconductor switches over recent years have resulted in the development of many structures of AC-AC converters without DC electric energy storage. Such converters are an alternative solution for frequently recommended systems with DC energy storage and are characterized by a lower price, smaller size and longer lifetime.
Most of the these topologies are based on the structure of the matrix converter. The topologies of the presented matrix-reactance frequency converters are based on a three-phase unipolar buck-boost matrix-reactance chopper with source or load switches arranged as in a matrix converter.
This kind of approach makes it possible to obtain an output voltage greater than the input one similar to that in a matrix-reactance chopper and a frequency conversion similar to that in a matrix converter. Written for researchers and Ph. Control of Power Electronic Converters and Systems. Control of Power Electronic Converters and Systems examines the theory behind power electronic converter control, including operation, modeling and control of b. Advances in Grid-Connected Photovoltaic Power Conversion Systems addresses the technological challenges of fluctuating and unreliable power supply in grid-conne.
Because of the demand for higher efficiencies, smaller output ripple, and smaller converter size for modern power electronic systems, integrated power electroni. Use of this web site signifies your agreement to the terms and conditions. Book Abstract: Soft-Switching Technology for Three-phase Power Electronics Converters Discover foundational and advanced topics in soft-switching technology, including ZVS three-phase conversion In Soft-Switching Technology for Three-phase Power Electronics Converters, an expert team of researchers delivers a comprehensive exploration of soft-switching three-phase converters for applications including renewable energy and distribution power systems, AC power sources, UPS, motor drives, battery chargers, and more.
Copyright Year: Why three-phase? And not two- or four-phase? Because, based upon economics alone, it is the most efficient way to generate, transmit and distribute electricity. Otherwise, the most cost-effective, for about 10 KVA or less to a single premises, is single-phase. So, all the generation, transmission, subtransmission and distribution systems, the capacities of which are generally in the mega volts ampere range, are three-phase out of practical necessity, whereas residential, most commercial and some light industrial, the capacities of which are generally in the kilo volts ampere range, are single-phase out of economic necessity; whereas some commercial and heavy industrial are three-phase out of supplier convenience or customer preference, or both, with single-phase sometimes being available as a fallback.
I can recall an exercise in an EE class a great many moons ago, wherein it was proved that the optimum number of phases was 2. So, the next higher integer, three, was selected, instead of two or four, either of which would have been logical extensions of the then existing two-phase system. Simply put, three-phase can generate, transmit and distribute more power, using fewer, less costly conductors and supporting facilities, than any other system. Rob, If you want some real text books that are graduate level then try these.
As most VFDs are using integrated circuits, wherein the converter and inverter sections are included within the same unit, the various manufacturers which feature such products should be reviewed as well.
There is often a difference between theory described adequately, abstractly, in texts , and practice described adequately, practically, in data sheets and applications notes. I read the book my friend loaned me.
It discussed the differences between Wye and Delta, but didn't have nearly as much information as I though it would have. I will try some of the books you guys mentioned. If you feel comfortable with the basics of how electricity works, jump ahead to the "Basics of Electrical Products" course because that is where it starts discussing 3 phase power.
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