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This paper describes a matrix converter with a three-phase input and single-phase output that can be used as a building block for high-power cascaded converters. In this paper a sinusoidal pulse width modulation technique with a linear controller is proposed for the single-phase output matrix converter. The proposed modulation and control will be used in the cascade configurations for high-power applications...
This paper presents a predictive control strategy to control the load current in a single-phase AC-AC converter. The proposed technique consists on a prediction estimation to choose the available switching state of the converter to be applied one step ahead. By considering a cost function, the best switching state to be applied into the converter the next sampling period is selected. All this is done...
This paper presents an overview of the modulation strategies of bidirectional switches used in modular multilevel matrix converters, making use of a simplified and dynamic method for understanding its operation. Initially, a review is made on the operation of Multi-Modular Matrix Converter to analyze and simplify the control of the converter switches. Then the study of the applied modulation is done...
This paper proposes a new topology for a three-phase AC/AC converter without DC. The presented topology is based on an direct AC/AC ĆukB2 bipolar matrix-reactance chopper. The considered solution is intended to control power flow and compensate voltage perturbations in the modern AC power grid with active loads (two-source system). The main difference in the proposed solution in comparison to a conventional...
This paper presents modelling and simulation of DC-DC converter with matrix converter as its basic topology. The proposed converter performs the four quadrant chopper operation. This topology can perform many different converter functions. This DC-DC converter can be utilized in speed control of dc motor in electric automobiles and traction where supply is dc voltage. The simulation model was developed...
This paper presents a novel matrix converter based drive technique for three phase brushless DC (BLDC) machines. In contrast to existing matrix converter based drives, the proposed technique uses a topology that has less number of semiconductors and a unique switching sequence to drive three phase BLDC machines directly from single phase mains supply lines without a DC link capacitor. The paper describes...
Choppers are widely used for traction motor control in electric automobiles and other electric transportation system. In those applications, control of dc motor's speed is required where the supply is dc or an ac voltage that has been rectified. This paper presents work on development of four quadrant DC chopper based on the SPMC topology, an advanced topology that hypothetically could perform many...
This paper describes non-linear average model of Indirect Matrix Converter (IMC) with an output LC filter in stationary and rotating reference frames. The defects of pervious control strategies based on derived average model are discussed and a novel adaptive neuro-fuzzy controller is proposed. Eliminating output current sensors, good dynamic performance in any operating point without overshoot and...
Two-stage matrix converter (TSMC) is a kind of new matrix converter developed on the basis of the conventional nine-switch matrix converter and, by virtue of its advantages, more suitable for serving as the exciter of doubly-fed wind power generation system. This paper made a deep analysis to the topology structure of TSMC and took accordingly the PWM space vector and zero current commutation to research...
This paper deals with a three-phase matrix-reactance frequency converter (MRFC). The analysed MRFC topology is based on buck-boost matrix-reactance chopper (MRC) one with source synchronous connected switches (LSCS) set arranged as in the step-up matrix converter (MC). The MRFC in question makes it possible to obtain a load output voltage much greater than the input voltage. Presented in this paper...
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,...
This paper deals with three-phase direct matrix- reactance frequency converters (MRFC) based on unipolar PWM AC matrix-reactance choppers (MRC). The topologies of the proposed MRFC are based on a three- phase unipolar MRC structure. 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...
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