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The matrix converter (MC) has been subject of investigation since 1980 and with the constant improvement of power electronics semiconductors along with the microelectronics it is now possible to efficiently and reliably implement such a topology. The MC finds its application wherever bidirectional power flow and controlled voltage and current in AC systems is needed and proves to be superior to its...
This paper deals with three-phase direct matrix-reactance frequency converters (MRFC) based on unipolar PWM AC matrix-reactance choppers (MRC). Each MRC with conventional topology has two synchronous-connected switches (SCS) sets. In the MRFC, unlike the MRC topology, one of SCS sets is replaced by a matrix-connected switches (MCS) set in order to make possible of the load voltage frequency change...
A voltage and current double closed-loop control method based on plural PI controller against two-stage matrix converter is developed. the compound vector models of the inverter side are established in d-q frame by introducing compound vector, a dual-loop control strategy which has the function of decoupling is presented accordingly by adopting the models, the plural PI controllers are designed to...
The matrix converter features natural bidirectional power flow, sinusoidal current/voltage waveforms, and a reduced size and weighty compared to standard direct static power converters. However, it is sensitive to polluted AC supplies because no storing elements are present and thus any disturbance would reach the load terminals. Typical disturbances in the AC distribution systems are voltage unbalances,...
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