2013
DOI: 10.1109/tia.2013.2252593
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A New Three-Phase AC/AC Modular Multilevel Converter With Six Branches in Hexagonal Configuration

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Cited by 111 publications
(58 citation statements)
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“…Some of these methods are injecting harmonics in the arm currents circulating inside the converter to reduce the energy ripple in the arms [8], [9]. There are also other harmonic injection methods that inject both voltages and currents to redistribute the energy in the converter [5]- [7]. These methods can be used when it is necessary to operate the converter at a frequency where the energy ripple normally becomes very large or unstable.…”
Section: Sconvmentioning
confidence: 99%
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“…Some of these methods are injecting harmonics in the arm currents circulating inside the converter to reduce the energy ripple in the arms [8], [9]. There are also other harmonic injection methods that inject both voltages and currents to redistribute the energy in the converter [5]- [7]. These methods can be used when it is necessary to operate the converter at a frequency where the energy ripple normally becomes very large or unstable.…”
Section: Sconvmentioning
confidence: 99%
“…A later addition to the family of cell-based ac/ac converters is the so called Hexverter [7]. It resembles the multilevel matrix converter described in [3] in that it is a direct ac/ac topology employing strings of full bridges.…”
Section: Introductionmentioning
confidence: 99%
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“…It draws the conclusion that the back-to-back connected MMC operates best at synchronous speed, whereas the M 3 C and Hexverter are better suited for lowfrequency output. It is also shown in [20] that the Hexverter system offers superior performance for low-frequency wind turbines. Furthermore, compared with back-to-back connected MMC and M 3 C, only 6 branches are required for the Hexverter to directly connect two three-phase systems; hence, the equipment volume and cost are significantly reduced.…”
Section: Introductionmentioning
confidence: 99%
“…Hexverter, using six branches of Modular Multilevel Converter (MMC) for three-phase AC-AC system, is surveyed in [15]. In [16] a Hexverter arisen by omitting DC-link of back-to-back modular multilevel converter is presented. Existence of weak side-to-side decouple in addition to large DC capacitors and arm inductors, however, imposes some constrains on Hexverter topology.…”
Section: Introductionmentioning
confidence: 99%