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Understanding wind turbine power converter reliability under realistic wind conditions (2024)
Journal Article
Alsaadi, S., Crabtree, C. J., Matthews, P. C., & Shahbazi, M. (2024). Understanding wind turbine power converter reliability under realistic wind conditions. IET Power Electronics, 17(4), 524-533. https://doi.org/10.1049/pel2.12670

The reliability of wind turbine power converters is crucial for analyzing wind energy project costs, and for estimating maintenance and downtime. The published literature in this field relies on evaluating the reliability effect of wind speed to esti... Read More about Understanding wind turbine power converter reliability under realistic wind conditions.

Steady-State Analysis of Class-E/Fn Inverter with MOSFET Nonlinear Output Capacitance at any Grading Coefficient (2023)
Journal Article
Lotfi, A., Shahbazi, M., Issa, W., Wheeler, P., Sekiya, H., Kazimierczuk, M. K., & Blaabjerg, F. (2023). Steady-State Analysis of Class-E/Fn Inverter with MOSFET Nonlinear Output Capacitance at any Grading Coefficient. IEEE Access, https://doi.org/10.1109/access.2023.3309295

In this paper, the analysis and design of a class-E/F n inverter using analytically expressions is provided for any grading coefficient m of the MOSFET body junction diode at 50% duty ratio. Generally, the class-E zero-voltage switching (ZVS) and zer... Read More about Steady-State Analysis of Class-E/Fn Inverter with MOSFET Nonlinear Output Capacitance at any Grading Coefficient.

A Reliability-Optimized Maximum Power Point Tracking Algorithm Utilizing Neural Networks for Long-Term Lifetime Prediction for Photovoltaic Power Converters (2023)
Journal Article
Shahbazi, M., Smith, N. A., Marzband, M., & Habib, H. U. R. (2023). A Reliability-Optimized Maximum Power Point Tracking Algorithm Utilizing Neural Networks for Long-Term Lifetime Prediction for Photovoltaic Power Converters. Energies, 16(16), Article 6071. https://doi.org/10.3390/en16166071

The reliability of power converters in photovoltaic systems is critical to the overall system reliability. This paper proposes a novel active thermal-controlled algorithm that aims to reduce the rate of junction temperature increase, therefore, incre... Read More about A Reliability-Optimized Maximum Power Point Tracking Algorithm Utilizing Neural Networks for Long-Term Lifetime Prediction for Photovoltaic Power Converters.

Distributed Real-Time Power Management in Microgrids using Multi-agent Control with Provisions of Fault Tolerance (2020)
Presentation / Conference Contribution

This paper presents a distributed real-time control scheme based on multi-agent systems for cost optimisation of a micro-grid using real-time dynamic price estimation. The real-time prices are forecast using realistic UK energy price data via a Marko... Read More about Distributed Real-Time Power Management in Microgrids using Multi-agent Control with Provisions of Fault Tolerance.

Decentralised Real-time Optimisation of Power Management in Microgrids Using Multi-Agent Control (2019)
Presentation / Conference Contribution

microgrid, implementing real-time generation cost minimisation. The MultiAgent control is tested against heuristic optimisation methods. It is shown that the control can reduce costs without the need of a central controller and in times of the order... Read More about Decentralised Real-time Optimisation of Power Management in Microgrids Using Multi-Agent Control.

Real-time power switch fault diagnosis and fault-tolerant operation in a DFIG-based wind energy system (2017)
Journal Article

As wind energy production increases, reliability and fault-tolerant operation capability of wind energy systems are becoming more important. Modern wind energy production systems use power electronic converters which are unfortunately proved to be on... Read More about Real-time power switch fault diagnosis and fault-tolerant operation in a DFIG-based wind energy system.

Quick Diagnosis of Short Circuit Fault in Cascaded H-Bridge Multilevel Inverter using FPGA (2017)
Journal Article
Ouni, S., Zolghadri, M., Rodriguez, J., Shahbazi, M., Oraee, H., Lezana, P., & Schmeisser, A. (2017). Quick Diagnosis of Short Circuit Fault in Cascaded H-Bridge Multilevel Inverter using FPGA. Journal of power electronics, 17(1), 56-66. https://doi.org/10.6113/jpe.2017.17.1.56

Fast and accurate fault detection is the primary step and one of the most important tasks in fault tolerant converters. In this paper, a fast and simple method is proposed to detect and diagnosis the faulty cell in a cascaded H-bridge multilevel inve... Read More about Quick Diagnosis of Short Circuit Fault in Cascaded H-Bridge Multilevel Inverter using FPGA.

Power Electronic Converters in Microgrid Applications (2016)
Book Chapter
Shahbazi, M., & Khorsandi, A. (2016). Power Electronic Converters in Microgrid Applications. In M. Mahmoud (Ed.), Microgrid: Advanced Control Methods and Renewable Energy System Integration. Elsevier

Open-circuit switch fault tolerant wind energy conversion system based on six/five-leg reconfigurable converter (2016)
Journal Article
Shahbazi, M., Saadate, S., Poure, P., & Zolghadri, M. (2016). Open-circuit switch fault tolerant wind energy conversion system based on six/five-leg reconfigurable converter. Electric Power Systems Research, 137, 104-112. https://doi.org/10.1016/j.epsr.2016.04.004

In this paper, an FPGA-controlled fault tolerant back-to-back converter for DFIG-based wind energy conversion application is studied. Before an open-circuit failure in one of the semiconductors, the fault tolerant converter operates as a conventional... Read More about Open-circuit switch fault tolerant wind energy conversion system based on six/five-leg reconfigurable converter.

Open- and Short-Circuit Switch Fault Diagnosis for Nonisolated DC–DC Converters Using Field Programmable Gate Array (2013)
Journal Article

Fault detection (FD) in power electronic converters is necessary in embedded and safety critical applications to prevent further damage. Fast FD is a mandatory step in order to make a suitable response to a fault in one of the semiconductor devices.... Read More about Open- and Short-Circuit Switch Fault Diagnosis for Nonisolated DC–DC Converters Using Field Programmable Gate Array.

FPGA-Based Reconfigurable Control for Fault-Tolerant Back-to-Back Converter Without Redundancy (2013)
Journal Article
Shahbazi, M., Poure, P., Saadate, S., & Zolghadri, M. (2013). FPGA-Based Reconfigurable Control for Fault-Tolerant Back-to-Back Converter Without Redundancy. IEEE Transactions on Industrial Electronics, 60(8), 3360-3371. https://doi.org/10.1109/tie.2012.2200214

In this paper, an FPGA-based fault-tolerant back-to-back converter without redundancy is studied. Before fault occurrence, the fault-tolerant converter operates like a conventional back-to-back six-leg converter, and after the fault, it becomes a fiv... Read More about FPGA-Based Reconfigurable Control for Fault-Tolerant Back-to-Back Converter Without Redundancy.

Fault-Tolerant Five-Leg Converter Topology With FPGA-Based Reconfigurable Control (2012)
Journal Article
Shahbazi, M., Poure, P., Saadate, S., & Zolghadri, M. (2013). Fault-Tolerant Five-Leg Converter Topology With FPGA-Based Reconfigurable Control. IEEE Transactions on Industrial Electronics, 60(6), 2284-2294. https://doi.org/10.1109/tie.2012.2191754

Fast fault detection and reconfiguration of power converters is necessary in electrical drives to prevent further damage and to make the continuity of service possible. On the other hand, component minimized converters may provide the benefits of hig... Read More about Fault-Tolerant Five-Leg Converter Topology With FPGA-Based Reconfigurable Control.