F. Blaabjerg

F. Blaabjerg
Aalborg University · Department of Energy Technology

ph.d.
Power electronics reliability applied in renewable generation, EV's, adjustable speed drive, power system

About

3,097
Publications
1,288,201
Reads
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117,973
Citations
Introduction
Frede Blaabjerg became Full Professor of power electronics and drives in 1998. From 2017 he became a Villum investigator. His current research interests include power electronics and its applications such as in wind turbines, PV systems, reliability, harmonics, micro-grid and adjustable speed drives. He has published +600 journal papers in the fields of power electronics and its applications. He is the co-author of 4 monographs and editor of 10 books in power electronics and its applications.
Additional affiliations
January 2006 - August 2010
Aalborg University
Position
  • Head of Faculty
Description
  • Dean
January 2006 - present
Zhejiang University
Position
  • Guest Professor
June 1998 - May 2017
Aalborg University
Position
  • Professor
Education
September 1982 - June 1987
Aalborg University
Field of study
  • Electrical and Electronic Engineering

Publications

Publications (3,097)
Article
Full-text available
The virtual synchronous generator (VSG) provides a promising solution to integrate a high penetration of inverter-based sources into the power system without threatening the frequency and voltage stability, which may solve the problem that the traditional maximum power point tracking (MPPT) control cannot provide the necessary ancillary. Due to dif...
Article
Full-text available
An accurate and efficient DC fault current assessment of modular multilevel converters (MMCs) is critical for designs and protection. The state-of-the-art often ignores the impact of the AC infeed in the DC fault assessment without MMC blocking. However, whether the AC infeed needs to be considered or not is a controversial problem. This paper prop...
Article
Full-text available
Due to the growing concerns regarding environmental and economic issues in power systems, nowadays the application of renewable energy sources (RES), especially wind energy has been increased. However, the increasing penetration of wind power plants (WPPs) into the grid has raised numerous challenges including output power fluctuations as well as t...
Article
Microgrids (MGs) are capable of playing an important role in the future of intelligent energy systems. This can be achieved by allowing the effective and seamless integration of distributed energy resources (DERs) loads, besides energy-storage systems (ESS) in the local area, so they are gaining attraction worldwide. In this regard, a DC MG is an e...
Preprint
Full-text available
Power systems are currently experiencing a transition towards decarbonisation of electrical generation through large-scale deployment of renewable energy sources. These are gradually replacing conventional thermal power plants which today are the main providers of black start (BS) services. Consequently, in case of a total/partial blackout, convent...
Article
A novel single-phase 29-level asymmetrical switched-diode multilevel inverter (MLI) topology is presented in this paper with a reduced number of components. The developed topology can able to generate a maximum of 29-levels of output voltage using unequal DC sources. The basic 15-level MLI is developed and then further developed to 29-levels. The p...
Article
This paper investigates the optimal real-time residential appliances scheduling of individual owner when participating in the demand response (DR) program. The proposed method is novel since we cast the optimization problem to an intelligent deep reinforcement learning (DRL) framework, which avoids solving a specific optimization model directly whe...
Article
Full-text available
Distributed energy resources based on grid-following inverters are the dominant part of future modern power systems. To achieve a higher performance, the reliability enhancements and cost reductions of such inverters are the most important demands. In this respect, the sensors are one of the elements which greatly determine the cost and reliability...
Chapter
In this chapter, we consider the concept of resilience in power electronic converters. The first step is to introduce these devices and recognize their main functions as well as their importance. Power electronic converters are essential for electrical energy conditioning and their use has seen considerable growth in modern industries in recent yea...
Chapter
In this part of the book, guidelines for achieving resilience are presented. These methods are used in both the design and operation processes of the converter. Based on the background of previous chapters, resilience of a converter increases if it operates at a set point with low stress. It is assumed that the converter is under the design process...
Chapter
In this chapter, some of the methods and techniques for an inherently resilient operation of the power electronic converters are presented. In these cases, the failure factor is applied to the converter but its effect is not experienced by the converter. One of these methods is application of fault‐tolerant structures for the power converters. Faul...
Chapter
In this chapter, the resilience concept is described in power electronic systems. In the first section, the possible faulty conditions are explained in a power electronic system. The conditions for supporting the load during the fault are presented. Then, the fault types are described. Internal and external faults are explained and their effects on...
Chapter
A resilient power converter is characterized by its availability. Protection and fault‐tolerant methods save the converter against non‐catastrophic faults. However, they also take the converter out of service. The subject of this chapter is converters that are not damaged but cannot operate normally. The availability of electric power converters as...
Chapter
In this chapter, the methods of fault prognosis in power electronic systems are described. It is important to have an expectation about useful life of a system before its construction or even its remaining useful life during its operation. This chapter covers the methods for reliability calculation from component to system level. The basic methods...
Chapter
Implementation of the methods for resilience achievement needs to have enough information about the condition of the converter. Condition monitoring is the process of monitoring the parameter of a condition in the system in order to identify a significant change that is indicative of a developing fault. The use of conditional monitoring allows main...
Chapter
In this chapter, the external faults that lead to unavailability of the power electronic converters are described. Two main types of external faults are the faults that occur outside the input and output ports of the power electronic converters. Other external faults are the faults that affect the converter from the other electric ports such as rad...
Chapter
In this chapter, resilient operation of power electronic converters against external faults such as a load short circuit is studied. Protection methods save the converter from non‐catastrophic faults. However, this method saves the converter but it also takes the converter out of service. The subject of this chapter concerns converters that are not...
Chapter
Power electronics have had a fast growth in recent years in various industries. In parallel to this growth and wide use of power electronic converters, the performance and quality of these devices have become critical issues. Resilience is about a young concept in modern power electronics. However, this concept has existed in other fields of techno...
Chapter
This chapter is the first in this part of the book about the faults in power electronic systems. In this chapter, internal faults of the power electronic systems are presented at the converter level. In the reliability study of a power electronic system, it is usually supposed that the failures originated from the internal faults inside the element...
Chapter
In this chapter, the fault diagnosis concept in power electronic converters is described. Two goals of the fault diagnosis, fault isolation and fault root cause analysis, are explained. Some of the methods for fault diagnosis in power electronic systems are presented. A fault diagnosis system should usually be fast to detect the faults before their...
Chapter
In this chapter, the failure mechanisms of power electronic systems are presented. However, there are many failure factors and sorting them is an important issue. In this chapter, the concept of useful life and the methods for useful life modeling are described. These definitions are used to group the faults. In addition, useful life modeling is im...
Chapter
In this chapter, the random chance and wear‐out failures in the power electronic systems are discussed. The faults related to a poor design were reviewed in the previous chapter. The faults in infant mortality of the system also can be detected by accelerated aging tests. However, random failures happen during the useful life of the system and wear...
Chapter
Resilience is a well‐known concept in some areas of engineering. Resilient networks are backbones of the communication networks. In power electronics, fault‐tolerant converters are widely used in critical industries. However, the resilience concept is used less than the fault tolerance. There are many approaches on the fault‐tolerant power electron...
Article
Full-text available
Fault detection is one of the most important research topics till today in the field of VSC-HVDC grids protection. In this subject, fast and reliable identification of faults is the most demanding issue, which still requires further study. In this respect, this paper proposes an index for fault detection, which is based on correlation between the p...
Article
Full-text available
This paper proposes a learning-based finite control set model predictive control (FCS-MPC) to improve the performance of DC-DC buck converters interfaced with constant power loads in a DC microgrid (DC-MG). An approach based on deep reinforcement learning (DRL) is presented to address one of the ongoing challenges in FCS-MPC of the converters, i.e....
Article
Full-text available
This paper proposed a probabilistic framework that could be used for the sensitivity assessment of grid-connected voltage source converters (VSCs), where uncertainties in the grid short circuit ratio (SCR) and operating point conditions, as well as control-loop interactions, were considered. The proposed method tried to broaden the available knowle...
Preprint
Full-text available
A multi-input multi-output based grid-forming (MIMO-GFM) converter has been proposed using multivariable feedback control, which has been proven as a superior and robust system using low-order controllers. However, the original MIMO-GFM control is easily affected by the high-frequency components especially for the converter without inner cascaded v...
Article
This paper presents a distributed fault-tolerant finite-time control algorithm for the secondary voltage and frequency restoration of islanded inverter-based Alternating Current (AC) Microgrids (MGs) considering input saturation and faults. Most existing distributed methods commonly design the secondary control layer based on ideal conditions of th...
Article
Full-text available
Ship motions affect the propulsion system, which causes fluctuations in the power system. Mutually, the power system variations impact the ship velocity by generating speed changes in the propeller. Therefore, interconnecting the ship hydrodynamic and power system has paramount importance in designing and analysing an all‐electric ship (AES). The l...
Preprint
p>This paper uses active flux concept to review fundamental frequency sensorless algorithms for both induction and permanent magnet motors in one framework. Fundamentally, sensorless torque estimation can be directly solved using voltage model (VM) estimator, or indirectly solved using current model (CM) estimator. The latter turns the torque estim...
Article
Full-text available
The power transfer technique used to charge Electric Vehicles (EV) has gone through a large development lately. Developing a purely autonomous vehicle (PAV) has motivated researchers to implement the wireless power transfer (WPT) technique to charge the EV battery. Previously developed EV used a pure grid-dependent charging system, increasing the n...
Preprint
p>This paper uses active flux concept to review fundamental frequency sensorless algorithms for both induction and permanent magnet motors in one framework. Fundamentally, sensorless torque estimation can be directly solved using voltage model (VM) estimator, or indirectly solved using current model (CM) estimator. The latter turns the torque estim...
Article
The increase of renewable energy generation and the integration with the grid brings some difficulties on the power network worldwide. The main problems on the energy providers are surplus or unregulated energy generation like in partially cloudy or fully sunny days. The main faults on the consumer side can be surplus or unregulated energy demand a...
Article
Full-text available
This paper suggests a new control algorithm for On‐Load Tap Changer (OLTC) of wind farm main transformer that is responsible for voltage regulation of collector network. The conventional control scheme adjusts the voltage of LV side of transformer without considering the wind turbine voltages. The voltage of end‐string wind turbines may reach the u...
Article
Microgrids relying on cooperative control are supported by communications, which are highly vulnerable to cyber-attacks. A significant amount of research is already carried out on the detection and mitigation of cyber attacks to secure the operation of DC microgrids. Although cyber attacks are fully capable of causing cascaded converter outages lea...
Article
Full-text available
Solar energy is prevalent in many applications, therefore, the reliability of solar energy systems has become an important topic for research communities and industry. High reliability and fault-tolerant capability are particularly vital for the solar energy systems that are mission-critical and/or inaccessible to affordable maintenance. In order t...
Preprint
Full-text available
The active and reactive power controllers of grid-forming converters are traditionally designed separately, which relies on the assumption of loop decoupling. This paper proposes a full-state feedback control for the power loops of grid-forming converters. First, the power loops are modeled considering their natural coupling, which, therefore, can...
Article
Microgrids are highlighted as the technology which can help in providing sustainable and efficient electrical energy solutions. They employ distributed energy resources to efficiently supply local load and increase the reliability of the local network. Design and planning are of a pivotal importance in yielding all of the advantages this concept ca...
Article
Partial shading is one of the biggest challenges in the optimum utilization of photovoltaic (PV) panels. Occurrence of shade on the front side of a panel affects the light transmission completely or partially, leading to its production loss. Hence, in this article, to improve the electrical performance of the partially shaded solar panel, a physica...
Article
Recent energy systems have witnessed a large number of extreme weather events due to the global climate change, resulting in severe damages and economic losses. To address this problem, this paper proposes a multi-stage stochastic programming model for resilient integrated electricity and natural gas distribution systems under typhoon natural disas...
Article
Array reconfiguration has emerged as a possible solution to enhance power generation from photovoltaic (PV) power plants under dissimilar irradiation conditions. However, the practicality of such solutions is often questioned as it requires many relocations for its real-time implementation. In this context, the proposed work demonstrates that utili...
Article
Over the past few years, the power electronic converters have gained significant attraction among researchers, especially as an interface between distributed generation (DG) systems and the grid. Hence, it is imperative to establish a path for enhancing the operation of power electronic converters, and improve their reliability. Further, it is iden...
Article
Full-text available
With the aim of improving the stability of renewable energy system with high permeability in the weak grid, a modified passivity-based control based on interconnection and damping assignment (IDA) is presented for LCL-filtered grid-connected inverters to eliminate the interactive resonances. The object is modeled in the form of port-controller Hami...
Article
Full-text available
The coordination of clustered microgrids (MGs) needs to be achieved in a seamless manner to tackle generation-load mismatch among MGs. A hierarchical control strategy based on PI controllers for local and global layers has been proposed in the literature to coordinate DC MGs in a cluster. However, this control strategy may not be able to resist sig...
Article
In this paper, an innovative approach of integrating multiple doubly-fed induction generator (DFIG)-based wind turbines using a single multi-port converter unit, named as a unified expandable power converter (UEPC) is presented. A novel partial simultaneous space vector modulation (PSSVM) scheme, adopted to the unified structure, is proposed to enh...
Article
Hydrogen energy storage systems (HydESS) and their integration with renewable energy sources into the grid have the greatest potential for energy production and storage while controlling grid demand to enhance energy sustainability. This paper presents a bibliometric analysis based on a comprehensive review of the highly cited articles on HydESS to...
Article
This paper introduces a new non-isolated soft-switching coupled-inductor step-up DC/DC converter. The presented topology utilizes a three-winding coupled-inductor (TWCI) along with a voltage multiplier circuit to increase the voltage conversion ratio without needing a high duty cycle. Using this circuit, a high voltage gain can be achieved without...
Article
A single-phase common-ground five-level (5L) inverter with a dynamic voltage conversion gain and capability of operating in a wide input voltage range and a single-stage energy conversion configuration is presented in this article. The proposed topology requires nine active power switches and is comprised of an integrated switched-boost (SB) module...
Preprint
Full-text available
High penetration of wind power with conventional grid following controls for inverter-based wind turbine generators (WTGs) reduces grid inertia and weakens the power grid, challenging the power system stability. Grid-forming (GFM) controls are emerging technologies that can address such stability issues. Numerous methodologies of GFM inverters have...
Article
Direct current (DC) microgrids can be considered as cyber-physical systems (CPSs) due to implementation of measurement devices, communication network and control layers. Consequently, DC microgrids are also vulnerable to cyberattacks. False data injection attacks (FDIAs) are a common type of cyber-attacks which try to inject false data into the sys...
Article
In recent years, due to the deeply concerns on environment protection, the production, transformation and utilization of the energy sources with a more efficient and various way has become an important research topic. Under this background, this paper designs a renewable energy powered multi-energy hub system with gas, electricity, and freshwater s...
Chapter
In the past decade, the term microgrid is used for the renewable energy-based systems. Smart microgrids have great potentials to produce electricity from the distributed energy resources like wind, solar, etc. However, there are some issues with the great penetration of smart microgrids in the power system such as system reliability, protection, ha...
Preprint
Full-text available
The classic design of grid-forming control strategies for power converters rely on the stringent assumption of the timescale separation between DC and AC states and their corresponding control loops, e.g., AC and DC loops, power and cascaded voltage and current loops, etc. This paper proposes a multi-input multi-output based grid-forming (MIMO-GFM)...
Article
Full-text available
Recently, multilevel converters (MLCs) have given promising solutions for medium power and high-power renewable energy systems. However, voltage level enhancement leads to a higher device count, especially for three-phase configurations. A megawatt-scale three-phase twenty-seven-level converter with a Scott-connected arrangement is used for medium...