Indirect Matrix Converters as Generator–Grid Interfaces for Wind Energy Systems

Karaman, Ekrem; Farasat, Mehdi; Trzynadlowski, A.M.

doi:10.1109/jestpe.2014.2329920

Cited by 39 publications

(12 citation statements)

References 15 publications

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“…These converters constitute an improvement over the cascaded Zsource matrix converter by reducing the voltage across the Zsource network's capacitor, limiting the inrush current at startup for series Z-source and widening the boost ratio for quasi Z-source and very high boost ratio for switched inductor Z-source matrix converter. The FFT analysis of these converters input/output currents can be carried out [21] , [22] , indicating a slight superiority of the switched inductor Z-source matrix converter over the quasi Z-source converter and the series Z-source matrix converter over the cascaded Z-source converter with respect to the quality of input currents.…”

Section: A Topology Different Configurationsmentioning

confidence: 99%

Z-Source Matrix Converter: An Overview

Ellabban

Abu‐Rub

Bayhan

2016

IEEE Trans. Power Electron.

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Conventional matrix converters (MCs) have limited voltage gain that is less than 0.866, whether for direct MC (DMC) or indirect MC (IMC). The Z-source matrix converters (ZSMC) overcome the voltage gain limitation of the traditional MC and achieve buck andboost operation with reduced switches count, therefore achieving low cost, high efficiency, and reliability, compared to the back-to-back converter. Furthermore, it will leads to more MC industrial applications. This paper presents an up to date comprehensive overview of the different Z-source matrix converter topologies and their configurations, circuit analysis, modulation schemes, and applications. This study offers a comprehensive and systematic reference for the future development of the Z-source matrix converters.Keywords: Z-source converter, Quasi-Z-source converter, Z-source indirect matrix converter, Z-source direct matrix converter.I. 0885-8993 (c) topology of the MC, they are called Z-Source Indirect Matrix Converter (ZSIMC) and Z-Source Direct Matrix Converter (ZSDMC). Therefore, it is possible to overcome the low voltage gain challenge of the traditional MC; in addition, the ZS/QZS network allows the short circuit, which makes the ZSMC commutation easier. As a result, the ZSMC provides a low-cost, reliable, and highly efficient structure for buck and boost ac/ac conversion. Moreover, there are two different configurations of the ZSIMC topology depending on the location of the ZS/QZS network. The ZS/QZS network can be located between the rectifier and inverter of indirect matrix converter at the intermediate dclink, the voltage gain is extended, but it is not all-silicon-solution and will cause larger size and heavier weight (it requires large inductors and capacitors in the dc-link) than the conventional IMC. The other option, where the ZS/QZS network is inserted between the input ac source and rectifier of the indirect matrix converter to achieve all-silicon solution. This configuration can achieve high voltage gain with a small ZS/QZS network, but it requires a large number of switches, so it is at the result of higher cost. This paper will present an updated overview of the different Zsource matrix converter topologies including the ZSIMC with its all-silicon and not all-silicon configurations and also the ZSDMC.

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Section: A Topology Different Configurationsmentioning

confidence: 99%

Z-Source Matrix Converter: An Overview

Ellabban

Abu‐Rub

Bayhan

2016

IEEE Trans. Power Electron.

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“…16a. (a) Motor torque (20 Nm/div) and stator currents (10 A/div), (b), (c) Zoom in on waveforms of motor torque (20 Nm/div) and stator currents (10 A/div), (d) Input voltage (300 V/ div) and input currents (10 A/div), (e), (f) Zoom in on waveforms of input voltage (300 V/div) and input currents (10 A/div) at 20 and -26 Nm, respectively, (g) Output voltages of QZS network and dc bus voltage (300 V/div), (h), (i) Zoom in on waveforms of output voltages of QZS network and dc bus voltage (300 V/div) at [20][21][22][23][24][25][26]respectively It can be seen that speed reduction lowers input side current due to motor power reduction, as shown in Figs. 15a and Also Fig.…”

Section: Test Ii: Rotor Speed Change At Input Voltage Sagsmentioning

confidence: 99%

Quasi‐Zsource indirect matrix converter‐fed induction motor drive

Guo

Liu

Ge³

et al. 2020

IET Electric Power Applications

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This study proposes an induction motor drive system based on the LC filter integrated quasi-Z source indirect matrix converter (QZS-IMC). The proposed drive system shows the following features: (i) variable voltage control of inductor motor is achieved by the rectifier stage and variable frequency control is achieved by the inverter stage; (ii) automatic low voltage ride through ability enhances capability of the proposed drive against grid voltage sag; (iii) wide voltage gain range ensures the drive system with high performance in wide speed range; (iv) there is no additional input filter. The voltage control implementation in the rectifier stage is proposed to benefit low voltage stress and low converter loss. The control method combines motor vector control, minimum shoot-through duty cycle and maximum modulation indexes. As a result, the input power supply voltage and dc-link voltage are maximally utilised and the power loss is reduced. Simulation and experimental results verify the proposed QZS-IMC motor drive system.

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“…ZS/QZS IMCs have two categories: The first type was implemented by inserting ZS/QZS networks in DC link of IMC, [9][10][11][12][13][14][15] which is called as DC-ZS-IMC or DC-QZS-IMC. The second type was achieved by placing ZS/QZS networks on the grid side of IMC, [16][17][18][19] which is called as GS-ZS-IMC or GS-QZS-IMC.…”

Section: Introductionmentioning

confidence: 99%

Modeling and analysis of LC filter integrated quasi‐Z source indirect matrix converter

Guo

Liu

et al. 2020

Circuit Theory & Apps

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Summary The existing model of LC filter integrated quasi‐Z source indirect matrix converter (QZS‐IMC) was derived using the DC circuit modeling method, which is mainly effective in DC circuit. As an ac circuit, the existing voltage boost ratio model of LC filter integrated QZS‐IMC exhibits a big error from the real boost ratio. Moreover, current amplitude and phase angle of QZS network were not considered in the existing model. This paper proposes a new comprehensive model of LC filter integrated QZS‐IMC taking into account the circuit's ac characteristics. The new model shows that voltage boost ratio is strongly related to QZS network inductance, capacitance, and frequency of input power supply. It can be concluded from the new model that the boost ratio is higher than 1/(1 − 2D), which is the boost ratio of existing model. Moreover, the new model shows that power factor affects voltage gain of QZS‐IMC system. The new model is compared with the existing model, circuit simulation, and experimental test. The results verify the new model and analysis.

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Indirect Matrix Converters as Generator–Grid Interfaces for Wind Energy Systems

Cited by 39 publications

References 15 publications

Z-Source Matrix Converter: An Overview

Z-Source Matrix Converter: An Overview

Quasi‐Zsource indirect matrix converter‐fed induction motor drive

Modeling and analysis of LC filter integrated quasi‐Z source indirect matrix converter

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