En
  • دکتری (1378)

    مهندسی برق

    دانشگاه ولنگنگ، ولنگنگ، استرالیا

  • کارشناسی‌ارشد (1373)

    مهندسی برق

    دانشگاه ولنگنگ، ولنگنگ، استرالیا

  • کارشناسی (1368)

    مهندسی برق - قدرت

    دانشگاه صنعتی شریف، تهران، ایران

  • الکترونیک صنعتی و درایو
  • سیستم های سایبر-فیزیکی انرژی
  • حفاظت و امنیت شبکه های انرژی
  • سیستم های سایبر- فیزیکی انرژی

    زمینه های پژوهشی: ارزیابی آسیب پذیری و ریسک برای سیستم های فیزیکی سایبری انرژی

    کارشناس مسئول: حمید رضا گوهریان

    هیات علمی همکار: علی یزدیان ورجانی

    تلفن: +98 21 88220158

    مکان:

  • الکترونیک صنعتی و کاربردها

    زمینه های پژوهشی: آزمایشگاه الکترونیک صنعتی و کاربردها محلی برای تحقیق و توسعه دانش در زمینه مبدل های انرژی الکتریکی

    کارشناس مسئول: حمید رضا گوهریان

    هیات علمی همکار: علی یزدیان ورجانی

    تلفن: +98 21 8288 3960

    مکان:

  • آزمایشگاه ماشین های الکتریکی و محرکه ها

    زمینه های پژوهشی: آزمایشگاه ماشین های الکتریکی و محرکه ها محلی برای تحقیق و توسعه دانش در زمینه ماشینهای الکتریکی و م

    کارشناس مسئول: حمید رضا گوهریان

    هیات علمی همکار: علی یزدیان ورجانی

    تلفن: +98 21 82883369

    مکان:

دکتر علی یزدیان از سال 1379 عضو هیئت علمی دانشکده مهندسی برق و کامپیوتر دانشگاه تربیت مدرس هستند كه هم اكنون دانشیار گروه مهندسی برق و سرپرست آزمایشگاه های الکترونیک صنعتی و درایو، حفاظت از شبکه های انرژی و آزمایشگاه امنیت شبکه های صنعتی در این دانشگاه می‌باشد. ایشان عضو هيئت موسس انجمن الکترونیک قدرت ایران عضو Editorial Board و مدیر مسئول مجله علمی-پژوهشی مهندسی برق مدرس (1391- تاکنون) هستند. ضمنا در سالهای 1387-1389رئیس دانشکده مهندسی برق وکامپیوتر دانشگاه تربيت مدرس، ایشان فعالیت ها و مسئولیت های ذیل را نیز داشته اند: دبیر کمیته علمی اولین کنفرانس کنفرانس حفاظت و کنترل، بنیانگذار و رئیس اولین کنفرانس الکترونیک قدرت IEEE PEDSTC2010))، رئیس اولین سیمپوزیوم شبکه های کامپیوتری و سیستم های توزیع شده ( IEEE CNDS2011) و رئیس هشتمین کنفرانس حفاظت و کنترل (PSPC2014) می باشد. سابقه عضویت دکتر علی یزدیان ورجانی در موسسه IEEE به بیش از 30 سال برمی گردد Student member 1988-1999)) و (IEEE member 1999-2018) . فعالیت های ایشان در IEEE شامل موسس و ریئس شاخه دانشجویی در دانشگاه ولنوگونگ ، موسس و مشاور (Consoler) شاخه دانشجویی دانشگاه تربیت مدرس (1381-1388)، عضویت در IRAN IEEE power Chapter ، و عضویت دایم انجمن الکترونیک قدرت IEEE ، و دبیر IEEE IRAN Section (1398) می باشد. زمینه های تحقیقاتی در حوزه الکترونیک صنعتی، حفاظت و امنیت شبکه های انرژی و صنعتی می باشد

ارتباط

رزومه

A Graph Theory-Based Approach to Detect False Data Injection Attacks in Power System AC State Estimation

Mohsen Jorjani, Hossein Seifi, Ali Yazdian-Varjani
Journal PapersIEEE Transactions on Industrial Informatics , Volume 17 , Issue 4, 2021 April , {Pages 2465 - 2475 }

Abstract

Nowadays, an Energy Management System (EMS) located at power grid control centers plays a critical role in ensuring the reliable operation of a grid. The State Estimator (SE) serves as the main interface of EMS with the power grid and because of that, other EMS functionalities rely on its provided data. Recent studies show that the state estimator is vulnerable to various types of cyber-attacks. Among different types of such attacks, the False Data Injection Attacks (FDIAs) are proven to be one of the most stealth ones and attracted much attention. Various countermeasures have been proposed to detect such kind of attacks. However, these approaches are generally based on some assumptions, such as being limited to detecting a specific type of

Efficiency improvement and reliability evaluation of small-scale PMSG-based wind energy conversion system using back-to-back T-type converter

Ali Yazdian-Varjani Mohammad Mohsen Rahimian, Abdolmajid Dejamkhooy, Majid Hosseinpour
Journal PapersElectrical Engineering , 2021 April 12, {Pages }

Abstract

Utilization of small-scale wind energy conversion systems (WECS) has been grown in recent years. Permanent magnet synchronous generator due to lack of slip rings is a suitable alternative for induction generators to be used in these systems. However, these generators use full power converters which means higher power losses. In this paper, an ultra-efficient three-level converter, called T-type converter, is used in a back-to-back configuration as power electronic interface for PMSG-based small-scale WECS. Then, simulations are carried out to evaluate the efficiency of the system and compare it to conventional two- and three-level back-to-back configurations. Meanwhile, thermal analysis is carried out to investigate the thermal

An Optimization-Based Approach to Recover the Detected Attacked Grid Variables after False Data Injection Attack

M Jorjani, H Seifi, AY Varjani, H Delkhosh
Journal Papers , , {Pages }

Abstract

A Non-Isolated Bidirectional DC-DC Converter with Wide Voltage Conversion Ratio and Soft-Switching Capability

A Malek, AY Varjani
Journal Papers , , {Pages }

Abstract

A New Topology of High Step-Up Non-Isolated DC-DC Converter with Modifying in VMC Network

P Sarvghadi, AY Varjani
Journal Papers , , {Pages }

Abstract

A Bridgeless Soft Switching PFC AC/DC Converter With Active Clamping Auxiliary Circuit

A Valizadeh, AY Varjani
Journal Papers , , {Pages }

Abstract

A Dual Active Bridge Converter with Full ZVS Range Using a Buck-Boost Converter

M Soleimanifard, AY Varjani
Journal Papers , , {Pages }

Abstract

Fast terminal sliding mode control-based direct power control for single-stage single-phase PV system

Elaheh Heydari, Ali Yazdian Varjani, Demba Diallo
Journal PapersControl Engineering Practice , Volume 104 , 2020 November 1, {Pages 104635 }

Abstract

Today, grid-connected photovoltaic systems have gained widespread penetration among renewable energy systems. For low power applications, a single-phase inverter with less power converter is a good compromise for high efficiency. The control must make it possible to extract the maximum power from the photovoltaic modules, ensure good dynamic performance for active and reactive power injection, ensure power quality, and reject disturbances and parameter mismatch. Besides, the controllers of the grid and PV sides should be coordinated. In this study, a fast terminal sliding mode control combined with Direct Power Control is proposed. Thanks to the two-cascaded control loops, simulations and experimental results with a 1?kW test bench have pro

A Graph Theory-Based Approach to Detect False Data Injection Attacks in Power System AC State Estimation

Mohsen Jorjani, Hossein Seifi, Ali Yazdian-Varjani
Journal PapersIEEE Transactions on Industrial Informatics , 2020 June 3, {Pages }

Abstract

Nowadays, an Energy Management System (EMS) located at power grid control centers plays a critical role in ensuring the reliable operation of a grid. The State Estimator (SE) serves as the main interface of EMS with the power grid and because of that, other EMS functionalities rely on its provided data. Recent studies show that the state estimator is vulnerable to various types of cyber-attacks. Among different types of such attacks, the False Data Injection Attacks (FDIAs) are proven to be one of the most stealth ones and attracted much attention. Various countermeasures have been proposed to detect such kind of attacks. However, these approaches are generally based on some assumptions, such as being limited to detecting a specific type of

An Extended Coupled-Inductor QZS Inverter with High-Frequency Input Current Ripple Suppression

Pedram Razavi Sani, Ali Yazdian Varjani, Roghayeh Gavagsaz-Ghoachani
Conference Papers2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) , 2020 February 4, {Pages 05-Jan }

Abstract

This paper presents an extended coupled inductor quasi-Z-source inverter (ECL-QZSI), which has advantages like input current ripple suppression and high gain ability. Adding third coupled winding series with the input inductor causes to reduce high-frequency input current ripple. Among the impedance source converters in the same condition to have equal current ripple, the amount of inductor will be decreased significantly compared to the absence of third series winding. Unlike trans-Z-source inverter, in proposed topology input current is continuous which eliminates protector energy source filter and voltage gain is boosted by reducing turns number of primary winding transformer which decreased costs and volume of the transformer. In compar

Power Decoupling Method for Single Stage Current Fed Flyback Micro Inverter

M SeyyedHosseini, A Yazdian-Varjani, M Mohamadian
Conference Papers2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) , 2020 February 4, {Pages 06-Jan }

Abstract

Among different micro inverter topologies, single stage micro inverters duo to their lower component, low cost and simple control structure are paid more attentions. One of the biggest problem in single phase micro inverter is power ripple in twice frequency of line. This phenomena causes voltage and current ripple in the side of PV so that designing MPPT controller becomes very hard. To eliminate power ripple (power decoupling) in conventional micro inverters, large electrolytic capacitors are used in parallel of PVs. Drawbacks of electrolytic capacitors are large ESR and lower life cycle in comparison of other type of capacitors. In this paper, a power decoupling method for Single stage flyback based current fed micro inverter is presente

A Novel Coupled-Inductor Soft-Switching Bidirectional DC-DC Converter with High Voltage Conversion Ratio

Amir Malek, Ali Yazdian Varjani
Conference Papers2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) , 2020 February 4, {Pages 06-Jan }

Abstract

In this paper, a novel soft-switching bidirectional DC-DC converter based on coupled inductors is suggested. This converter includes four switches and a pair of coupled inductors and can achieve high voltage conversion ratio in step-up/step-down modes. Employing the interleaved technique reduces input current ripple and thereby increases the efficiency of the converter. The ZVS turn-on characteristic is obtained in both boost and buck directions for all converter switches. The uncomplicated and efficient control, as well as operation under proper duty cycle, are the other advantages of the suggested converter. A 500W prototype 36V/400V is simulated to validate theoretical conclusions.

IOT Based Multi agent Micro Inverter for Condition Monitoring and Controlling of PV Systems

M SeyyedHosseini, A Yazdian-Varjani, M Mohamadian
Conference Papers2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) , 2020 February 4, {Pages 06-Jan }

Abstract

The Internet of Things (IoT) refers not only to the connectivity of systems and devices but to the related applications and services that provide monitoring and control of complex systems and services. Micro inverters due to their advantages to central inverters, get more attentions. Conventional micro inverters in solar applications only transfer energy from solar cells to grid or loads. Solar smart inverters in addition to transferring energy, can monitor condition to detect faults and also operate as multi agent systems. IOT interconnection can bring lots of new characteristics to micro inverters. This kind of IoT solar energy system can collect and analyze inverter data, control solar farms, monitor the condition, detect faults and opti

A Bidirectional Buck-Boost Converter in Cascade with a Dual Active Bridge Converter to Increase the Maximum Input and Output Currents and Extend Zero Voltage Switching Range

Masood Soleimanifard, Ali Yazdian Varjani
Conference Papers2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC) , 2020 February 4, {Pages 06-Jan }

Abstract

Extension of zero voltage switching (ZVS) range of a Dual active bridge (DAB) converter is important especially at light loads. In this paper, the ZVS range of a DAB converter is increased by cascading a bidirectional buck-boost converter with a DAB converter. This proposed structure increases the maximum input and output currents, so output power can be controlled in a wider range. Simulation results confirm the performance of the proposed configuration.

Simulation of a Multi-Level Resonant Flying-Capacitor Converter above Resonant Frequency to Overcome Its Voltage Regulation Issue

Seyed Saeed Hashemi, Atefeh Salehian, Reza Beiranvand, Ali Yazdian
Conference Papers2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC) , 2019 February 12, {Pages 272-278 }

Abstract

This paper presents a Flying-Capacitor converter above its resonant frequency considering zero-voltage switching (ZVS) realization and voltage regulation issue due to wide input voltage and output power variations. A new multi-level Flying-Capacitor (FC) dc/dc converter is candidate among the other proposed topologies with lower power device count and soft switching characteristics that results in lower electromagnetic interference and switching losses. ZVS operation under the continuous conduction mode (CCM) operation has achieved undeniable benefits in switching losses and therefore a higher efficiency. In the MOSFET-based converters, the ZVS operation causes lower switching losses in contrary to the wide used zero current switching (ZCS)

Simulation of a Step-up Resonant Switched-Capacitor Converter under the CCM Operation Mode

Atefeh Salehian, Seyed Saeed Hashemi, Reza Beiranvand, Ali Yazdian
Conference Papers2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC) , 2019 February 12, {Pages 230-235 }

Abstract

This paper presents a resonant switched capacitor converter (SSC) above its resonant frequency to achieve zero voltage switching (ZVS) operation and overcome its voltage regulation issue. The ZVS operation under the CCM operation mode reduces switching losses and improves the converter efficiency more than zero current switching (ZCS) operation below the resonant frequency in MOSFET based converters. In addition, under the CCM operation mode the output voltage can be regulated as the input voltage or load current varies in a wide range. The symmetrical dual structure proposed converter causes the input current ripple and output voltage ripple to be reduced more in contrary to previous researches. Therefore, the input filter and output capac

An Interleaved Diode-Capacitor High Step-Up Quasi-Resonant DC-DC Converter Featuring Soft-Switching Characteristic

Saeed Kavehei, Ali Yazdian Varjani, Reza Beiranvand, Majid Zare
Conference Papers2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC) , 2019 February 12, {Pages 665-670 }

Abstract

In this paper, a high step-up quasi-resonant dc-dc converter, based on an interleaved diode-capacitor structure, is introduced and analyzed. High voltage gain is obtained by the use of a diode-capacitor network. Soft switching condition, which includes zero-current switching (ZCS) or zero-voltage switching (ZVS), is resulted for all semiconductor power devices by quasi-resonance technique created by input inductances of the converter along with snubber capacitors across the switches. Reverse recovery problem of diodes is alleviated because of ZCS condition. Then, the switching losses have been reduced considerably and the converter efficiency is improved. With soft switching characteristic, switching frequency can be increased and subsequen

A New Variable Step-Size P&O Algorithm with Power Output and Sensorless DPC Method for Grid-Connected PV System

Elahe Heydari, Ali Yazdian Varjani
Conference Papers2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC) , 2019 February 12, {Pages 545-550 }

Abstract

One of the popular topologies specially for low cost grid-connected photovoltaic systems is single-stage topologies. In these systems, the inverter is the only converter where both maximum power point tracking algorithm and grid side controller will be applied to it. Hence, the MPPT algorithm should be adapted with grid side controller for better transient response and to remove the internal control loops. One of the most popular MPPT algorithms and grid side controllers are P&O and direct power control, relatively. To combine them, an P&O with power output should be used. However, the response speed of controllers especially in single-stage system is very important. Therefore, since the dynamic of power is less than current or voltage, a f

Power Quality Compensation and Power Flow Control in AC Railway Traction Power Systems

Majid Zare, Ali Yazdian Varjani, Seyed Mohammad Dehghan, Saeed Kavehei
Conference Papers2019 10th International Power Electronics, Drive Systems and Technologies Conference (PEDSTC) , 2019 February 12, {Pages 426-432 }

Abstract

Rail transport is one of the transportation methods on earth that is very frugal in energy consumption. Electric railway technology has many advantages and disadvantages as well. The most important disadvantage of this technology is the creation power quality problems in the upstream power system. In other words, electric railway traction systems due to continuous load variations, Reactive power demand, asymmetry and harmonic Pollution can be challenged for the upstream power system. In this paper, after introducing the structure of the AC electric railway network and its related power quality issues, the railway power quality compensator (RPQC) is introduced. Also, in order to active power transfer between the various lines of electric rai

Efficiency Analysis of Vienna Rectifier-Based Grid interface Systems for Low-Power PM WECS

Amirhossein Rajaei, Mustafa Mohamadian, Ali Yazdian
Journal PapersIranian Journal of Science and Technology, Transactions of Electrical Engineering , 2019 January , {Pages 10-Jan }

Abstract

Losses of power semiconductor switching devices used in grid-connected wind energy conversion systems (WECSs) are regarded as one of the main issues to be considered when comparing different types of grid interface systems (GISs). This loss is more highlighted for low-power applications, because it directly affects the reliability and efficiency of the system. Recently, a GIS using Vienna rectifier (VR) as generator-side converter is investigated for a permanent magnet synchronous generator-based WECS. Due to its cost advantage, this reduced switch count rectifier is specifically attractive for low-power applications. In this study, the analytical relations for switching and conduction losses of a VR-based GIS are derived and c

دروس نیمسال جاری

  • دكتري
    سيستم هاي انتقال جريان متناوب انعطاف پذير ( واحد)
    دانشکده مهندسی برق و کامپیوتر، گروه قدرت
  • دكتري
    مباحث ويژه (سيستم هاي سايبر فيزيكي انرژي) ( واحد)

دروس نیمسال قبل

  • كارشناسي ارشد
    الكترونيك قدرت 1 ( واحد)
    دانشکده مهندسی برق و کامپیوتر، گروه قدرت
  • كارشناسي ارشد
    الكترونيك قدرت 1 ( واحد)
  • دكتري
    كنترل محركه هاي الكتريكي ( واحد)
  • دكتري
    كنترل محركه هاي الكتريكي ( واحد)
  • 1396
    رضوي ثاني, پدرام
    طراحي و ساخت يك اينورتر منبع امپدانسي براي سيستم يكپارچه توليد، نگهداري و مديريت مصرف برق خانگي
  • 1397
    اميدي, حسين
  • 1397
    باجلوند, سينا
  • 1397
    سليماني فرد, مسعود
  • 1397
    ملك, امير
  • 1397
    ميرزاخاني, سيدحسين
  • 1397
    ولي زاده صوفحسن, علي
  • 1398
    ربيعي كاشانكي, علي
  • 1398
    مهاجران, سيدرضا
  • 1392
    سليمي اتاني, راضيه
    طراحي ساز و كار تشخيص و جبران اثرات اقتصادي تلفات غير فني بر بازيگران در بازار برق مبتني بر قيمت گذاري
  • 1395
    حيدري, الهه
  • 1396
    سروقدي, پوريا
  • مدیر گروه قدرت
  • رئیس بخش برق - دانشکده فنی و مهندسی
  • رئیس دانشکده مهندسی برق و کامپیوتر
    داده ای یافت نشد

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