Application of Matrix Converter for Power Flow Control in a Transmission Line

Sobczyk, Tadeusz; Borkowski, Dariusz

doi:10.1109/pct.2007.4538594

Cited by 6 publications

(8 citation statements)

References 2 publications

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“…From the operation point of view, the most important is the transfer factor for the main harmonic, which is given by the formula (10). Furthermore, from these relations (9), (10) there follow significant conclusions concerning the quality of external signals and the control method [12]. The angle β of the main harmonic of transferred voltages can be easily controlled by shifting all state functions by a given time interval T 0 (Fig.…”

Section: Description Of MC In Frequency Domainmentioning

confidence: 88%

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Description of matrix converter in frequency domain

Borkowski¹,

Sobczyk²

2013

Archives of Electrical Engineering

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Abstract:The paper presents abilities and advantages following from the use of the harmonic balance method for analysis of steady state of a multiphase system with switching devices on example of a matrix converter. Switching elements are modelled as resistances with step-wise variable parameters, what allows to describe the converter by a linear infinite set of equations. The analysis in frequency domain is presented on example of the one-periodic control strategy. External systems were also added using the Thevenin method approach. The numerical calculation results of a linear equations set were verified by the variable structure method in a time domain and the numerical convergence was confirmed. Furthermore, the exemplary complex system was analysed using the cascade method and current waveforms were obtained.

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Section: Description Of MC In Frequency Domainmentioning

confidence: 88%

“…This application requires a dedicated control strategy, which ensures suitable conditions. They seem to be fulfilled by the one-periodic control strategy, which can control the power flow by shifting the phase angle of a transferred voltage [12].…”

Section: Introductionmentioning

confidence: 99%

Description of matrix converter in frequency domain

Borkowski¹,

Sobczyk²

2013

Archives of Electrical Engineering

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“…The presented method of computing the PWM duty cycles for a five-phase input converter can be successfully extended to the other matrix converters with a greater number of inputs. A new concept of power flow control in a power system transmission line by a new Flexible AC Transmission Systems (FACTS) device, which contains two power transformers and a multiphase matrix converter as an active control unit was proposed in papers [55], [56]. However, the authors did not propose a technique of the voltage modulation than the control for the cycloconverter.…”

Section: A Computation Of the Pwm Duty Cycles Adopting The Nearest Tmentioning

confidence: 99%

Direct Modulation for Conventional Matrix Converters Using Analytical Signals and Barycentric Coordinates

2020

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This paper proposes the generalized direct modulation for Conventional Matrix Converters (CMC) using the concept of analytical signals and barycentric coordinates. The paper proposes a novel approach to the Pulse Width Modulation (PWM) duty cycle computing, which allows faster prototyping of direct control algorithms. The explanation of the new idea using analytical considerations demonstrating the principles of direct voltage synthesis has been presented in the article. The study concerns mainly the CMC3 × 3 but solutions for 3 × n, 5 × 5, and 5 × 3 topologies have also been discussed. The transformation of instantaneous input voltages to analytic signals great permits for simple presenting of real input voltage conditions such as waveform type, asymmetry or other deformation like higher-order harmonics. The proposed interpolation methods allow for determining the values of PWM duty cycles using simple formulas based on the determinants of the 2nd-degree matrices. Therefore, the proposed method, which based on the barycentric coordinates, frees an algorithm from trigonometry and angles.

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“…They seem to be fulfilled with the one-periodic control strategy, initiated and developed at the Institute of Electromechanical Energy Conversion at Cracow University of Technology [3]. This control strategy has some important advantages such as: high dynamic and control precision, limited amount of harmonics in input and output signals, the low sampling frequency [4] What is more, the voltage transfer ratio can be increased up to 98.8% by using two coupling transformers converting 3 phase system into 12 [5]. Because of frequency analysis of that kind of units, description of the controller in frequency domain is desirable.…”

Section: Introductionmentioning

confidence: 99%

“…It allows to determine analytical relations between parameters for particular harmonics (e.g. transfer ratio factor) and obtain steady state characteristics as a direct result of calculations [5]. Furthermore, it can be proved that voltages and currents on both sides of the converter are symmetrical [6].…”

Section: Introductionmentioning

confidence: 99%

Influence of commutation conditions on steady states in matrix converter

Borkowski¹,

Sobczyk²

2011

Archives of Electrical Engineering

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Influence of commutation conditions on steady states in matrix converter The paper investigates a significant influence of transients on steady states in a matrix converter with the one-periodic control strategy. Proposed controller can be used as an interconnection device within a power system for a power flow control. However, the presence of inductances in external systems has the significant influence on steady state of a matrix converter operation. The special current injection method has been developed to ensure a proper operation of a matrix converter. Presented analysis of steady states is carried out in a frequency domain using the harmonic balance method. Obtained numerical results, which are confirmed by a time domain analysis, prove the effectiveness of the proposed method.

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Application of Matrix Converter for Power Flow Control in a Transmission Line

Cited by 6 publications

References 2 publications

Description of matrix converter in frequency domain

Description of matrix converter in frequency domain

Direct Modulation for Conventional Matrix Converters Using Analytical Signals and Barycentric Coordinates

Influence of commutation conditions on steady states in matrix converter

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