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
  • الکترونیک صنعتی و کاربردها
  • آزمایشگاه ماشین های الکتریکی و محرکه ها

دکتر علی یزدیان از سال 1379 عضو هیئت علمی دانشکده مهندسی برق و کامپیوتر دانشگاه تربیت مدرس هستند که هم اکنون 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 هیئت 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 تربیت 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 Dual-Function Power Decoupling Circuit for Single-Stage Grid-Connected PV Inverter

Elaheh Heydari, Ali Yazdian-Varjani, Demba Diallo
Journal PapersIEEE Transactions on Power Electronics , 2022 January 19, {Pages }

Abstract

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

Three-Winding Coupled-Inductor-based Boost Converter with Voltage Multiplier Cell and Active Clamp Circuit for Low-Power Photovoltaic Application

Danesh Amani, Ali Valizadeh, Reza Beiranvand, Ali Yazdian Varjani
Journal Papers , 2021 May 18, {Pages 379-384 }

Abstract

This study shows a new high step up converter based on the three-winding coupled-inductor. The introduced power converter switches turn on at zero voltage switching (ZVS) condition, and all the diodes turn off at zero current switching (ZCS) condition over the entire operating scope. Therefore, the switching losses diminish, and higher switching frequency is achievable. Furthermore, it has lower EMI noises and higher efficiency due to using the soft-switching technique. The introduced power converter operates at (40 V - 80 V) at the input side. Furthermore, the output power variation is in the range of (50 W-250 W). This converter is therefore ideal for low power photovoltaic (PV) applications.

Extended Phase Shift Control in Dual Active Bridge Converter Considering Magnetizing Inductance of Transformer

Masood Soleimanifard, Ali Yazdian Varjani
Journal Papers , 2021 May 18, {Pages 290-295 }

Abstract

The single phase shift (SPS) method is the conventional switching strategy for the dual active bridge (DAB) structure. Another switching method is the extended phase shift (EPS) method. In this modulation, the zero voltage switching (ZVS) range increases. In this paper, the effect of the magnetizing inductance of the transformer on the output power value and ZVS range with the EPS control method is studied. Simulation results show correctness of the theoretical analysis.

A High Step-Up Transformerless DC-DC Converter with New Voltage Multiplier Cell Topology and Coupled Inductor

Pouria Sarvghadi, Ali Yazdian Varjani, Mahdi Shahparasti
Journal PapersIEEE Transactions on Industrial Electronics , 2021 December 21, {Pages }

Abstract

In this article, a new high step-up transformerless dc?dc converter based on a voltage multiplier and a coupled inductor topology is presented. The proposed converter has two stages. In the first stage, a modified boost converter is designed by the coupled inductor, and in the second stage, a new voltage multiplier by using a coupled inductor is illustrated. In this converter, high voltage gain can be achieved by adjusting the turn ratio of two coupled inductors and the duty cycle, which result in three degrees of design freedom. Using a single power switch with low on -resistance in the converter structure leads to simple control and low conduction loss. In addition, total voltage stresses of active elements are decreased, which increases efficiency. Steady-state performance and theoretical achievements are confirmed by experimental test results on a test setup with one 200-W dc?dc prototype.

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

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دروس نیمسال جاری

  • كارشناسي ارشد
    سيستم هاي انتقال جريان متناوب انعطاف پذير ( واحد)
    دانشکده مهندسی برق و کامپیوتر، گروه قدرت
  • كارشناسي ارشد
    حسگرها و عملگرها ( واحد)

دروس نیمسال قبل

  • دكتري
    مديريت شبكه و امنيت در فضاي تبادل داده ( واحد)
    دانشکده مهندسی برق و کامپیوتر، گروه مديريت فناوري اطلاعات
  • كارشناسي ارشد
    الكترونيك قدرت 1 ( واحد)
  • كارشناسي ارشد
    كنترل محركه هاي الكتريكي ( واحد)
  • 1400
    ظفردار, عليرضا
    طراحي و اجراي كنترلر سرعت موتور هاي مغناطيس دائم در لوازم خانگي با هدف افزايش راندمان
  • 1400
    قليچ خاني, متين
  • 1400
    محموديان, ميلاد
  • 1400
    صالحي, سيدمحسن
    ارائه مبدل DC-DC افزاينده با بهره ولتاژ بالا و ويژگي مينيمم فاز
  • مدیر گروه قدرت
  • رئیس بخش برق - دانشکده فنی و مهندسی
  • رئیس دانشکده مهندسی برق و کامپیوتر
    داده ای یافت نشد

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