An improved 4-step commutation method application for matrix converter

Yu, Guo; Guo, Youguang; Deng, Wenlang; Zhu, Jianhui; Blaabjerg, Frede

doi:10.1109/icems.2014.7014112

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…Note that, if the load current is interrupted, a large over-voltage upon the switch, can damage this semiconductor element. Thus, the dead time mechanism like in the conventional PWM inverter is applied and energy during this time interval is absorbed by the auxiliary protection circuit [6], [7]. From a pure industrial point of view -the real, not theoretical -a matrix topology, does not have a significant performance advantage over IGBT PWM inverters.…”

Section: A a Brief Look At The Matrix Convertermentioning

confidence: 99%

“…For further deliberation let's assume that all required analytical signals, which correspond to input voltages, have been calculated appropriately and any deterministic voltage deformations have been expressed by the Hilbert pairs represented by equation (7). Each sampled AC voltage is transformed into one point with coordinates xy.…”

Section: Presentation Of Ac Voltages As a Collection Of Rotating mentioning

confidence: 99%

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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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Section: A a Brief Look At The Matrix Convertermentioning

confidence: 99%

Section: Presentation Of Ac Voltages As a Collection Of Rotating mentioning

confidence: 99%

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

2020

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“…However, the measurement and implementation hardware are complex and expensive. Reference [21] proposed an improved four-step commutation method based on the traditional four-step commutation. It simplifies the first and fourth steps and raises the effective working time of matrix converter, but a four-step commutation board is needed.…”

Section: Positive Processmentioning

confidence: 99%

Research on Commutation and Coordination Control Strategy of Excitation Power Supply Based on Bidirectional Reduced Matrix Converter for Ion Accelerator

et al. 2018

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The contribution of this paper is putting forward a kind of ion accelerator magnet excitation power supply with bidirectional reduced matrix converter (BRMC) as well as a coordination control strategy with bipolar current space vector modulation strategy, which is utilized to realize bidirectional power flow for a BRMC system to solve problems such as low input power factor, large input current harmonics and no bidirectional energy in the conventional ion accelerator magnet excitation power supply. Meanwhile, a hybrid commutation strategy combining the simplified three-step commutation with zero vector commutation was proposed to solve the commutation problem for a matrix-type first stage in BRMC. The feasibility and effectiveness of the proposed strategy, which can achieve bidirectional energy flow and safer commutation, have been verified by the experimental results.

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“…En (Empringham et al, 1998) se analizan los diferentes tipos de conmutaciones en los CM y se propone la conmutación de cuatro pasos, como la más efectiva para evitar los problemas planteados anteriormente. En (Guo, 2014) se presenta un análisis detallado, incluyendo un estudio experimental de la conmutación de 4 pasos, y se proponen algunas variantes en la conmutación para mejorar su comportamiento, también se resalta en este trabajo sus ventajas sobre otros tipos de conmutaciones en los CM. En (Robles et al, 2015;Rodriguez et al, 2016) se describe la forma de realizar la conmutación de cuatro pasos en el CM de este trabajo.…”

Section: Conmutación De La Corriente En El CMunclassified