Research on Output Voltage Modulation of a Five-Level Matrix Converter

Qiu, Lin; Xu, Lie; Wang, Kui; Zheng, Zedong

doi:10.1109/tpel.2016.2581831

Cited by 7 publications

(7 citation statements)

References 28 publications

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“…Multilevel converters are one of the promising topologies in providing better output waveform quality with lower harmonic distortions . It involves the concept of utilizing various small DC voltage levels in producing AC voltage waveform.…”

Section: Categories Of Mcsmentioning

confidence: 99%

“…Multilevel converters are one of the promising topologies in providing better output waveform quality with lower harmonic distortions. [73][74][75] It involves the concept of utilizing various small DC voltage levels in producing AC voltage waveform. The smaller the voltage step, the smaller will be the harmonic distortion and lower switching losses.…”

Section: Multilevel Matrix Convertersmentioning

confidence: 99%

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Matrix converters for electric power conversion: Review of topologies and basic control techniques

Alammari

Aleem

Iqbal

et al. 2019

Int Trans Electr Energ Syst

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Summary A matrix converter (MC) is a topology for ac‐ac power conversion that has been widely investigated and compared with conventional ac‐dc‐ac topologies because of its attractive features. The MC is formed of controlled active devices and does not include any sizeable passive components. The converter can be used to directly control single/three/multiphase loads. MCs are highly effective in controlling the power factor and providing sinusoidal input and output currents. This paper provides a comprehensive state of the art review of the MC and discusses the main topology variations including single‐phase conventional and isolated MCs, three‐phase direct and indirect MCs, impedance source (Z‐source) MCs, multiphase MCs, and multilevel MCs (MMCs). The aim of this research article is to provide a one‐stop information on single/three/multiphase matrix, Z‐source matrix, and multilevel MCs for potential readers, researchers, and practicing engineers.

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Section: Categories Of Mcsmentioning

confidence: 99%

Section: Multilevel Matrix Convertersmentioning

confidence: 99%

Matrix converters for electric power conversion: Review of topologies and basic control techniques

Alammari

Aleem

Iqbal

et al. 2019

Int Trans Electr Energ Syst

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“…The modulation signals can be normalised as (19) and (20). Then, the balanced output voltage can be obtained.…”

Section: Output Voltage Derivationsmentioning

confidence: 99%

“…Matrix converters (MCs) also have advantages such as four-quadrant operation, sinusoidal input and output currents and no large energy storage elements. By combining the advantages of multilevel converters and MCs, the multilevel MCs [8][9][10][11][12][13][14][15][16][17][18][19][20] are receiving a lot of attention.…”

Section: Introductionmentioning

confidence: 99%

“…Lots of multilevel MC topologies have been studied, consisting of multi-modular MCs [8][9][10][11][12], diode-clamped MCs [13][14][15][16][17], and capacitor-clamped (flying capacitor) MCs [18][19][20]. The three-level diode-clamped matrix converter (TLDCMC) [16,17] inherits the features of the conventional multilevel inverter and the indirect matrix converter (IMC).…”

Section: Introductionmentioning

confidence: 99%

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Modified modulation scheme for three‐level diode‐clamped matrix converter under unbalanced input conditions

Zhao

Huang

et al. 2018

IET Power Electronics

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Abstract-The three-level diode-clamped matrix converter topology has outstanding performance under ideal operating conditions. However, input disturbance can influence the waveforms at the output side of the converter due to the direct coupling between the input and output. This paper proposes a modified modulation scheme for three-level diode-clamped matrix converter during operation with unbalanced input voltages and when different transformer turns ratios are used for an isolation transformer at the input. With this modulation technique, sinusoidal and balanced output voltages are guaranteed and the input current harmonics are minimized. Experimental results are presented to demonstrate the feasibility and effectiveness of the proposed modulation scheme.Keywords-Different transformer turns ratios of the isolation transformer, three-level diode-clamped matrix converter, unbalanced input voltages, modified modulation scheme IntroductionMultilevel power converters [1, 2] have a number of advantages including lower output voltage distortion and semiconductor device voltage stress. These features make them very suitable for high-power, high-voltage applications, such as large variable-speed motor drives, high-voltage direct-current transmission, railway traction and manufacturing [3][4][5][6][7]. Matrix converters (MCs) also have advantages such as four-quadrant operation, sinusoidal input and output currents and no large energy storage elements. By combining the advantages of multilevel converters and MCs, the multilevel MCs [8][9][10][11][12][13][14][15][16][17][18][19][20] are receiving a lot of attention.Lots of multilevel MC topologies have been studied, consisting of multi-modular MCs [8][9][10][11][12], diode-clamped MCs [13][14][15][16][17], and capacitor-clamped (flying capacitor) MCs [18][19][20]. The three-level diode-clamped matrix converter (TLDCMC) [16,17] inherits the features of the conventional multilevel inverter and the indirect matrix converter (IMC). The phase opposite disposition (POD) modulation method and phase disposition (PD) modulation method can both be applied to the TLDCMC under the assuming ideal input voltages [16,17]. However, in practice, the input voltages are likely to be unbalanced. Due to the lack of dc-link energy storage, the input disturbance will be transferred directly to the load, thereby influence the quality of the output waveform. Meanwhile, the input current will also become distorted.Several strategies have been proposed to suppress the problems associated with unbalanced input voltages for low voltage MCs. The feed-forward compensation strategy was proposed in [21]. The fluctuation of virtual dc-link voltage is compensated by modifying the modulation index of inverter stage. As a result, balanced sinusoidal output currents are obtained, but the input current distortion is not considered.

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Research on the modulation and control of multilevel matrix converter

Jianglei

Wang

et al. 2018

J. eng.

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Research on Output Voltage Modulation of a Five-Level Matrix Converter

Cited by 7 publications

References 28 publications

Matrix converters for electric power conversion: Review of topologies and basic control techniques

Matrix converters for electric power conversion: Review of topologies and basic control techniques

Modified modulation scheme for three‐level diode‐clamped matrix converter under unbalanced input conditions

Research on the modulation and control of multilevel matrix converter

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