A direct control method for matrix converters

In this paper, a basic hysteresis control strategy for current-controlled matrix converter (MC) is introduced and discussed. Based on the rectifier-inverter equivalent circuit, a novel primary modulation strategy for improving the input current quality of MC is presented. That is, space vector modulation is used for control input current, and hysteresis current strategy with zero vectors is used for control output current. Furthermore, an optimal modulation strategy that reduces common-mode voltage at the output is proposed. This optimal strategy maintains subdivision of 6 input current sectors and proper selection of zero vectors and switching sequences. Therefore, by using this optimal strategy, peak value of common-mode voltage is reduced by 33.3% and RMS value is reduced by over 50% compared to the unoptimizable modulation strategy. Finally, simulation and experimental results are provided to verify the validity and feasibility of modulation strategy proposed in this paper.

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“…The combination method is mentioned in [6] [7]. The basic control strategy of hysteresis current is studied by computer simulation.…”

Section: A Basic Control Strategy Of Hysteresis Currentmentioning

confidence: 99%

A Modulation Strategy to Reduce Common-Mode Voltage for Current-Controlled Matrix Converters

Lin

Zhang

2006

IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics

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“…Normalmente a decomposição da tensão de entrada em componentes simé-tricos e a transformação para o referencial síncrono são necessárias para a implementação destas estratégias. Alguns trabalhos empregam uma malha de controle de corrente para melhorar o desempenho do CM (Mutschler e Marcks, 2002;Wiechmann et al, 1997;Sato et al, 2007). Outra possibilidadeé a otimização do uso dos vetores nulos (Casadei et al, 2009).…”

Section: Introductionunclassified

Um controlador de corrente de carga para o conversor em matriz trifásico para trifásico e para o inversor de frequência sem capacitor do elo de corrente contínua

Filho

Gazoli

et al. 2010

Sba Controle & Automação

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A Controller for the Three-Phase to Three-Phase Matrix Converter and for the Voltage Source ThreePhase Inverter Without DC-Link CapacitorVoltage source three-phase inverter plays an important role in modern industry. The conventional voltage source inverter has a large electrolytic capacitor as energy store element in order to keep the DC-link voltage constant. However, a large electrolytic capacitor increases the input current distortion. Replacing the large electrolytic capacitor by a small film capacitor, the input current quality is improved but the DC-link voltage and the output currents are distorted by low order harmonic components.The three phase to three phase matrix converter performs electric energy direct transfer from the input to the output with sinusoidal input current although the distortion and the unbalance of the input voltages affects directly the output of the matrix converter. This paper proposes a load current control method to the matrix converter and also to the voltage source inverter in absence of the dc-link capacitor in order to compensate the distortion caused by low order harmonics components in the output currents. The proposed load current control scheme employs just one PI controller and since that the space vector modulation is used in this control, the switching frequency of the converter is kept constant. Theorical foundation, simulations results and experimental results are presented.

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“…In the case of asymmetric components and/or harmonics contained in input voltages, the matrix [M] defined in (5) automatically compensates input voltage disturbances [17]. This propriety will be presented and validated in the simulation of the conversion matrix part (III.C).…”

Section: A Conversion Matrix [M] Calculationmentioning

confidence: 99%

“…Matrix SVM modulations use only the two last families to create output voltages and input currents [17], [18], as the first one has a vector position varying with the time, which is not useful for building the references with the space vector approach.…”

Section: Space Vector Modulation (Svm) For Matrix Convertermentioning

confidence: 99%

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter

Gruson

Moigne

Delarue

et al. 2013

IEEE Trans. Ind. Inf.

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. Any correspondence concerning this service should be sent to the repository Administrator : archiveouverte@ensam.eu 1 Abstract -Today, industry has not fully embraced the matrix converter solution. One important reason is its high control complexity. It is therefore relevant to propose a simpler but efficient modulation scheme, similar as three phase VSI modulators with the well-known symmetrical carrier-based ones. The modulation presented in this paper is equivalent to a particular Space Vector Modulation (SVM) and takes into account harmonics and unbalanced input voltages, with the same maximum voltage transfer ratio (86%). The aim of this work is to propose a simple and general pulse-width-modulation method using carrier-based modulator for an easier matrix converter control. Furthermore, a simple duty cycle calculation method is used, based on a virtual matrix converter. Finally, simulations and experimentations are presented to validate this simple, original and efficient modulation concept equivalent to matrix converter SVM.

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A direct control method for matrix converters

Cited by 50 publications

References 4 publications

A Modulation Strategy to Reduce Common-Mode Voltage for Current-Controlled Matrix Converters

A Modulation Strategy to Reduce Common-Mode Voltage for Current-Controlled Matrix Converters

Um controlador de corrente de carga para o conversor em matriz trifásico para trifásico e para o inversor de frequência sem capacitor do elo de corrente contínua

A Simple Carrier-Based Modulation for the SVM of the Matrix Converter

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