Stability improvement of matrix converter by digitally filtering the input voltages in stationary frame

Lei, Jiaxing; Zhang, Bo; Qin, Xianhui; Bian, Jinliang; Wei, Jiadan

doi:10.1049/iet-pel.2015.0163

Cited by 6 publications

(2 citation statements)

References 28 publications

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“…Hence the best couple of adjacent switching states I and I of the rectifier stage are selected to minimize g i shown in (11), and then their duty cycles can be calculated using (12).…”

Section: B Cost Function Minimizationmentioning

confidence: 99%

Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern

Lei

Tarisciotti

Trentin

et al. 2016

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

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Abstract-Finite States Model Predictive Control (MPC) hasbeen recently applied to several converters topologies for the many advantages it can provide such as fast dynamics, multitarget control capabilities, easy implementation on digital control board and capability of including constraints in the control law. However, its variable switching frequency and lower steady state waveform quality, with respect to standard control plus modulator systems, represents a limitation to its applicability. Modulated Model Predictive Control (M 2 PC) combines all the advantages of the simple concept of MPC together with the fixed switching frequency characteristic of PWM algorithms. In particular this work focuses on the Indirect Matrix Converter (IMC), where the tight coupling between rectifier stage and inverter stage has to be taken into account in the M 2 PC design. This paper proposes an M 2 PC solution, suitable for IMC, with an optimal switching pattern to emulate the desired waveform quality features of Space Vector Modulation (SVM). In the optimal pattern, the switching sequences of the rectifier stage and inverter stage are rearranged in order to always achieve zerocurrent switching on the rectifier stage, thus simplifying its commutation strategy. In addition, the optimal pattern enables M 2 PC to produce sinusoidal source current, sinusoidal output current and maintain all desirable characteristics of MPC.

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“…Hence the best couple of adjacent switching states I and I of the rectifier stage are selected to minimize g i shown in (11), and then their duty cycles can be calculated using (12).…”

Section: B Cost Function Minimizationmentioning

confidence: 99%

Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern

Lei

Tarisciotti

Trentin

et al. 2016

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

Self Cite

View full text Add to dashboard Cite

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“…To improve the stability of the MC with existing modulation schemes, some stabilization methods have been proposed in the literature, most of which adopt digitally filtered input voltages to calculate the modulation signals [16][17][18][19]. Though they do have the capability to stabilize the MC, their performance relies on the parameters of the digital filters [17].…”

Section: Introductionmentioning

confidence: 99%

Input Disturbance Suppression for Unidirectional Matrix Converter with a Stability-Enhancing Modulation Scheme

2019

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This paper proposes an input voltage disturbance suppression control strategy for the unidirectional matrix converter (UMC) with a new modulation scheme enhancing the stability. In the new scheme, the modulation index is directly, rather than reversely, proportional to the instantaneous amplitude of input filter capacitor voltages. Contrary to traditional schemes, the stability of the UMC with this new scheme is even better with the increase of the transferred active power, which is particularly suitable for applications with sinusoidal and balanced input conditions. As to the disturbed input conditions, the new scheme could introduce low-frequency harmonics into output currents. To address this issue, a feedback control strategy of output current amplitude is further proposed to eliminate the additional harmonics. Stability analysis of a UMC with the proposed modulation scheme and feedback control strategy is presented. Experimental results have verified the validity of the proposed control solution.

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Matrix Converters

Clare¹,

Wheeler²,

Trentin³

et al. 2018

Wiley Encyclopedia of Electrical and Electronics Engineering

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Matrix converters provide direct AC‐AC power conversion without the intermediate DC link required by other approaches. Frequency changing and voltage changing capabilities are inherent in the operation of the converter. Matrix converters can be used in all applications where a conventional rectifier‐inverter might be used – but are particularly applicable to drive systems. The absence of DC link energy storage makes the matrix converter interesting and potentially attractive for applications where high power density is required and/or where high levels of structural integration are required. Regenerative operation is also an inherent feature of the topology. This article introduces the basic concept of the matrix converter and explains how it can be practically implemented using standard semiconductor devices. Some attention is paid to the critical issue of safe commutation – as this differs from most other converter types. Methods of modulating the converter to produce the desired output voltages and input currents are also discussed. The article concludes by discussing some protection issues and some emerging circuits that are derived from the basic matrix converter concept.

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Stability improvement of matrix converter by digitally filtering the input voltages in stationary frame

Cited by 6 publications

References 28 publications

Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern

Fixed frequency finite-state model predictive control for indirect matrix converters with optimal switching pattern

Input Disturbance Suppression for Unidirectional Matrix Converter with a Stability-Enhancing Modulation Scheme

Matrix Converters

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