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نمایش تعداد 1-10 از 232

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    Two simple overmodulation algorithms for space vector modulated three-phase to three-phase matrix converter 

    نوع: Journal Paper
    نویسنده : امیرمسعود بزرگی; محمد منفرد; حبیب رجبی مشهدی; Amir Masoud Bozorgi; Mohammad Monfared; Habib Rajabi Mashhadi
    سال: 2014
    خلاصه:

    In this study, the potential of the space vector modulation (SVM) to control the matrix converter beyond its intrinsic voltage transfer ratio (VTR) limitation (0.866) is investigated. Afterwards, a simple space vector overmodulation method...

    A Dynamic Model for Direct and Indirect Matrix Converters 

    نوع: Journal Paper
    نویسنده : محمّد حسینی ابرده; رضا قاضی; Mohamad Hosseini; Reza Ghazi
    سال: 2014
    خلاصه:

    Thecomplicatedmodulation algorithm and the high switching frequency are two main hindrances in the analysis and simulation of matrix converters (MCs) based systems. To simplify the analysis and accelerate the simulation ofMCs, a unique dynamic model...

    Control of DFIG Wind Turbines Based on Indirect Matrix Converters in Short Circuit Mode to Improve the LVRT Capability 

    نوع: Journal Paper
    نویسنده : احمد خواجه; رضا قاضی; Ahmad Khajeh; Reza Ghazi
    سال: 2013
    خلاصه:

    Nowadays, the doubly-fed induction generators (DFIGs) based wind turbines (WTs) are the dominant type ofWTs. Traditionally, the back-to-back converters are used to excite the rotor circuit of DFIG. In this paper, an indirect matrix converter (IMC...

    PERFORMANCE AND STABILITY STUDY OF A TRIPLE DYNAMIC VOLTAGE RESTORER BASED ON MATRIX CONVERTER 

    نوع: Conference Paper
    نویسنده : رضا قاضی; محمدرضا اعلمی; محمد رضا مزینی; Reza Ghazi; mohammad reza aalami
    سال: 2017
    خلاصه:

    Dynamic voltage restorer (DVR) is a type custom power devices which has been conventionally designed based on AC/DC/AC converters. This topology suffers from a bulky capacitor and the corresponding problems. So in this paper the matrix converter...

    Very high gain three-phase indirect matrix converter with two Z-source networks in its structure 

    نوع: Journal Paper
    نویسنده : امیر حاکمی برآبادی; محمد منفرد; Amir Hakemibarabadi; Mohammad Monfared
    سال: 2017
    خلاصه:

    Nowadays, expansion of new energy sources and the necessity of integrating them with the utility grid require more advanced power electronic converters. Matrix converters (MCs) and indirect matrix converters (IMCs) are recent solutions, which offer...

    Locality-sensitive hashing based multiobjective memetic algorithm for dynamic pickup and delivery problems 

    نوع: Conference Paper
    نویسنده : Fangxiao Wang , Yuan Gao , Zexuan Zhu
    ناشر: IEEE
    سال: 2014

    Compensating of voltage flicker and disturbance using Dynamic Voltage Restorer based on matrix converter 

    نوع: Conference Paper
    نویسنده : حجّت داغانی; رضا قاضی; Hojjat Daghani; Reza Ghazi
    سال: 2013
    خلاصه:

    the voltage flicker and

    severe disturbances. This topology is based on a 3-three phase

    to a single phase matrix converter (MC) where the ac to ac

    conversion is provided without any dc energy storage units.

    Therefore, unlike...

    Implementation of the Maximum Power Point Tracking Algorithm on Indirect Matrix Converter Controlled DFIG wind Turbine 

    نوع: Conference Paper
    نویسنده : Ahmad Khajeh; رضا قاضی; M. Hosseini Abardeh; Reza Ghazi
    سال: 2016
    خلاصه:

    Abstract— Nowadays, the doubly-fed induction generators

    (DFIG) based wind turbines (WT) are the dominant type of WT

    connected to power systems having MW power range.

    Traditionally the back-to-back ...

    A single-stage ballast for HID lamps with a buck chopper integrated direct matrix converter 

    نوع: Conference Paper
    نویسنده : سیروس مجدی; محمد منفرد; sirous majdi; Mohammad Monfared
    سال: 2017
    خلاصه:

    This paper proposes the combination of low frequency square waveform (LFSW) ballasts with AC/AC converter topologies as a new electronic ballast for high intensity discharge (HID) lamps. The proposed circuit is a buck integrated matrix converter...

    GA-Based Optimal LQR Controller to Improve LVRT Capability of DFIG Wind Turbines 

    نوع: Journal Paper
    نویسنده : احمد خواجه; رضا قاضی; Ahmad Khajeh; Reza Ghazi
    سال: 2013
    خلاصه:

    , an Indirect Matrix Converter (IMC)

    is proposed to control the generator. Compared with back-to-back converters, IMCs have

    numerous advantages such as: higher level of robustness, reliability, reduced size and

    weight due to the absence...

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