An Effective SVM Method for Matrix Converters With a Superior Output Performance

The pulse-width modulation (PWM)-controlled modern electric drives causes some serious problems such as the generation of common-mode voltage (CMV) and high dv/dt. The CMV might cause high-frequency leakage currents that flow through the possible path that is bearing of the motor. Thus, the flow of current through the motor bearing leads to its premature failure. One of the main challenges in developing PWM methods for control of motor drives is the problem of CMV and its reduction/elimination. In this study, a modulation technique based on space-vector approach is developed to reduce the CMV in a three-to-seven-phase direct matrix converter. CMV reduction becomes possible by selecting suitable zero-voltage vectors for a specific duration and the use of a selected set of active vectors for the output voltage synthesis. The proposed space-vector PWM (SVPWM) for the reduction of CMV is performed with a seven-phase R-L load to show the viability of the proposed technique. The proposed SVPWM technique is implemented experimentally in dSPACE working in conjunction with fieldprogrammable gate array processor board using a system generator. Hardware results that validate the proposed control algorithm are discussed.

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“…In the linear range of operation, the seven‐phase inverter has a maximum output written in [28, 29],

1 / 2 \cos false(pi / 2 \times 7 false) = 0.5129 \times V_{d}

, whereas the length of the largest rectifier equivalent of the input side can be written as

false(2 / 3 false) V_{d}

. Here, V d is the magnitude of the input line voltage.…”

Section: Resultsmentioning

confidence: 99%

CMV reduction in a three‐to‐seven phase direct matrix converter using SVPWM

Rahman

Al‐Emadi

Al-Hitmi

et al. 2019

IET Electric Power Applications

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“…Modulasi konverter memegang peranan untuk menghasilkan gelombang keluaran sinusoidal. Salah satunya, modulasi vektor yang mempunyai keunggulan menjaga rugi -rugi pensakelaran dan harmonisa keluaran pada keadaan minimal (Jiang, dkk, 2018) (Nguyen, & Lee, 2017). SVM matrix converter diterapkan pada sistem close loop untuk dapat melakukan pengendalian motor induksi.…”

Section: Pendahuluanunclassified

Optimasi Fuzzy Supervisory Control pada Performa Matrix Converter Drive 3x3 di Empat Kuadran Operasi

et al. 2021

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ABSTRAKTeknologi pengemudian motor dengan efisiensi tinggi serta untuk mencapai empat kuadran operasi menjadi perhatian pada bidang pengemudian elektrik. Matrix converter menjadi alternatif utama konverter drive motor karena keunggulan – keunggulannya. Walaupun matrix converter sebagai drive motor mempunyai kompleksitas tinggi, namun dengan dikombinasikan teknik Indirect Space Vector Modulation (ISVM) dapat menghasilkan kepresisian lebar pulsa modulasi (PWM). Untuk pengendali sistem, diterapkan Fuzzy Supervisory Control (FSC), yang merupakan kendali gabungan, agar kecepatan referensi bisa tercapai. FSC dibandingkan dengan kendali konvensional (PI control) untuk membuktikan keoptimalan performa sistem yang diusulkan. Parameter performa sistem dan Total Harmonic Distortion (THD) dianalisis lebih lanjut. Hasil simulasi menunjukkan bahwa sistem yang diusulkan dapat mencapai Error Steady state (ESS) 0% dan THD lebih kecil.Kata kunci: Matrix converter, ISVM, FSC, motor induksi. ABSTRACTMotor-driving technology with high efficiency and to achieve four quadrants of operation is a concern in the area of electric steering. Matrix converter is the main alternative for motor drive converters because of its advantages. Although the matrix converter as a motor drive has a high complexity, combined with the Indirect Space Vector Modulation (ISVM) technique can produce precision pulse width modulation (PWM). For the system controller, Fuzzy Supervisory Control (FSC) is applied, which is a combined control, so that the reference speed can be achieved. FSC is compared with conventional control (PI control) to prove the optimization of the proposed system performance. System performance parameters and Total Harmonic Distortion (THD) are further analyzed. Simulation results show that the proposed system can reach 0% Error Steady State (ESS) and smaller THD.Keywords: Matrix converter, ISVM, FSC, induction motor.

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“…Because the MC is supplied by a source voltage and the output load is inductive, the input phases should not be shortcircuited, and the output phases should not be open-circuited [10]. To satisfy these two constraints, there are only 27 valid switching states, corresponding to 27 space vectors, which are listed in Table I.…”

Section: Nomenclature S Vmentioning

confidence: 99%

“…Several modulation methods have been presented to effectively reduce the CMV for MCs. Among them, space vector modulation (SVM) is currently the most widely used technique owing to its advantageous features such as harmonic performance, flexibility to optimize the switching pattern, and achieving the highest modulation ratio [5], [10]. Two types of SVM methods are based on replacing the MC zero vectors with active vectors [11] or rotating the vectors [12] to reduce the CMV peak value to 42%.…”

Section: Introductionmentioning

confidence: 99%

Input Power Factor Compensation Strategy for Zero CMV-SVM Method in Matrix Converters

Nguyen

Ngo

et al. 2020

IEEE Access

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The space vector modulation (SVM) method using only rotating vectors is very effective to suppress the common-mode voltage (CMV) for matrix converters (MCs). However, the effect of the input filter on the input power factor (IPF) has not been fully investigated when using this method. This study investigated the effect of the input filter on the displacement angle and proposes an IPF compensation strategy for the zero CMV-SVM method in MCs. The proposed strategy analyzes the duty cycles of rotating vectors under the IPF-compensation condition. Through this analysis, the proposed strategy adjusts the zero vector by using a set of three counterclockwise-rotating vectors or three clockwise-rotating vectors to make all the duty cycles non-negative, ensuring that the zero CMV-SVM method can be applied to compensate the IPF for the MCs. This study also determines the condition to achieve unity IPF for the main power source and the maximum allowable IPF if the above condition is not met. Finally, experimental results are provided to validate the theoretical study. INDEX TERMS Matrix converter, space vector modulation, zero common-mode voltage, rotating vector, input power factor.

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An Effective SVM Method for Matrix Converters With a Superior Output Performance

Cited by 15 publications

References 26 publications

CMV reduction in a three‐to‐seven phase direct matrix converter using SVPWM

CMV reduction in a three‐to‐seven phase direct matrix converter using SVPWM

Optimasi Fuzzy Supervisory Control pada Performa Matrix Converter Drive 3x3 di Empat Kuadran Operasi

Input Power Factor Compensation Strategy for Zero CMV-SVM Method in Matrix Converters

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