Comparison of switching losses of matrix converters for commutation methods

Tammaruckwattana, Sirichai; Yue, Chenxin; Ikeda, Yoshiki; Ohyama, Kazuhiro

doi:10.1109/epe.2014.6910995

Cited by 9 publications

(2 citation statements)

References 4 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%

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%

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

2020

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“…short-circuit at a voltage source and open-circuit at inductive components. The conventional commutation method is separated into two types, the voltage commutation method based on the input voltage polarity and the current commutation method based on the output current direction (10)- (13) . The voltage commutation works reliably when the relationship of the input voltages is accurately obtained.…”

Section: Introductionmentioning

confidence: 99%

Two-step Commutation for Three-phase-to-single-phase Matrix Converter with High-frequency Isolation

Takuma

Itoh

2019

IEEJ Journal IA

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This paper proposes a two-step commutation method for a three-phase-to-single-phase matrix converter. Conventional two-step commutation cannot be applied at all operation regions because a commutation failure still owing to detection error of grid voltages. In our proposed two-step commutation, we modulate only one of two devices in a bidirectional switch and utilize a zero vector to let the switches naturally turn off, in this manner, the commutation failures are avoided completely regardless of the voltage detection error. From experimental results, it is confirmed that the proposed two-step commutation undertakes safe operation to avoid commutation failure. The input current total harmonic distortion at 10 kW with the proposed two-step commutation is improved by 38% in comparison with the conventional four-step commutation.

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Hybrid commutation method with current direction estimation for three-phase-to-single-phase matrix converter

Takuma

Itoh

2018

2018 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Comparison of switching losses of matrix converters for commutation methods

Cited by 9 publications

References 4 publications

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

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

Two-step Commutation for Three-phase-to-single-phase Matrix Converter with High-frequency Isolation

Hybrid commutation method with current direction estimation for three-phase-to-single-phase matrix converter

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