Mariusz Malinowski

• Warsaw University of Technology

Hybrid distribution transformers (HDTs) have been proposed as an alternative to conventional transformers (low-frequency transformers) and solid-state transformers, combining the reliability of low-frequency transformers (LFTs) and the controllability of power converters. Although there are several HDT configurations, those that connect the series...

In this paper, a multistage DC-DC buck converter with a high reduction ratio is presented, based on the concept of switched inductance. The proposed converter offers significantly a higher reduction ratios compared to the conventional step-down converters. The analysis and design of the proposed multistage converter are considered for three operati...

The Hybrid Distribution Transformer (HDT) has been proposed as a solution to cope with the low short-circuit capability of solid-state transformers. Among the available HDT configurations, the one that connects a series/parallel converter on the primary/secondary side can be highlighted. This configuration improves the voltage and current waveforms...

The use of renewable energy sources (RES) such as wind and solar power is increasing rapidly to meet growing electricity demand. However, the intermittent nature of RES poses a challenge to grid stability. Energy storage (ES) technologies offer a solution by adding flexibility to the system. With the emergence of distributed energy resources (DERs)...

In the first part of my column, I start with congratulations. I want to extend congratulations to Prof. Giuseppe Buja, our longtime Administrative Committee (AdCom) member, who received the prestigious Richard Harold Kaufman IEEE Technical Field Award for outstanding contributions in industrial systems “for fundamental contributions to modulation a...

Dear IEEE Industrial Electronics Society (IES) members

I want to present in this column the rich activity of our association in areas of which we are very proud because they connect all IEEE Industrial Electronics Society (IES) members. Please let me start with Distinguished Lecturer (DL) program. The DL program aims to strengthen the IES Chapters worldwide by inviting well-known outstanding profession...

A Hybrid Distribution Transformer (HDT) combines a power converter and a conventional Low-Frequency Transformer (LFT) in a single device. The most recurrent configuration consists of a shunt converter fed by the Auxiliary Winding (AW) of the LFT and a series converter connected to the low-voltage grid. Nonetheless, load harmonics circulate through...

The year 2022 was very good for the Industrial Electronics Society (IES) as we were able to return to relatively normal operations in our activities after the pandemic period. Also, the IES’s activities for the past years were well accepted in all aspects by the TAB Society and Council Review Committee.

Transformerless inverters, most of which are H-bridge inverters, have been widely used and studied in grid-connected power systems in the last decades. However, the H-bridge inverter is affected by the low- and high-frequency common-mode voltage between the input and output terminals, resulting in a large common-mode leakage current. An alternative...

Finally, after two years of the COVID-19 pandemic, in early June, one of our flagship conferences the 2022 IEEE International Symposium on Industrial Electronics and Administrative Committee was held in hybrid form in Anchorage, Alaska, USA. It was nice to meet familiar faces and feel the excitement of the conference and meeting friends we have onl...

I don’t think any of us expected the beginning of the year to be so difficult. The pandemic has receded into the background, not because it suddenly ended but because of the even more significant threat of Russia’s unjustified attack on Ukraine. This has destabilized the world as we know it and reminds us of the old days of global tension in intern...

Transactive Energy (TE) is an evolving concept that combines information and energy in order to enable highly coordinated energetic transactions. Different sources define transactive energy in different ways. The GridWise Architecture Council (GWAC) defines TE as “ A system of economic and control mechanisms that allows the dynamic balance of suppl...

Time flies fast, and another year passed. This has not been an easy period for everyone due to the pandemic and lack of contacts that are essential for our Society. However, I would like to sincerely thank Prof. Terry Martin for his full dedication in leading the IEEE Industrial Electronics Society (IES) for the past two years during this particula...

In this work, a ten-level inverter scheme is presented to extend the linear modulation range (LMR) by using a unique space vector pulsewidth modulation (SVPWM) technique, such that no lower order harmonics (such as 5th, 7th, 11th, and 13th, etc.) are present in the phase voltage as compared to six-step mode operation. The proposed scheme can increa...

With the rapid progression of renewable energies into grids, grid-connected systems are increasing dramatically around the world [...]

DC-link dynamic is one of the most important issues for current source converters (CSC). In practice, the dc-link voltage suffers from the slow dynamic due to grid disturbances, which will affect the quality of output waveform and damage the converter. Many solutions have been presented to cope with it, but none of them achieve the zero dynamic dc-...

The paper overviews residential and building integrated photovoltaic (PV) module types. It demonstrates that existing dc-dc converter technologies do not allow building a universal interface microconverter because of wide dispersion of the parameters. However, the absence of universal microconverters limits the widespread adoption of PV modules des...

A passivity-based control (PBC) strategy with improved robustness for single-phase three-level rectifiers feeding resistive and constant power loads (CPLs) is proposed. It is shown that the control of the rectifier can be achieved if the damping injection is applied to the grid current only. In this case, the knowledge of load resistance is require...

High‐power motors, mostly operating in medium voltage (MV), are of most interest due to their enormous energy consumption. This chapter discusses the challenges and problems faced when using MV drives and indicating the direction for proper use and understanding of such drives. Furthermore, an overview of the popular converter topologies in MV driv...

This paper presents a new algorithm of finite control set model predictive control (FCS-MPC) with floating virtual voltage vectors (VVs) applied to grid-connected voltage source converter. The new solution improves the conventional FCS-MPC and FCS-MPC with virtual VVs, assuring a fixed switching frequency. In comparison with FCS-MPC using virtual V...

Distribution systems are under constant stress due to their highly variable operating conditions, which jeopardize distribution transformers and lines, degrading the end-user service. Due to transformer regulation, variable loads can generate voltage profiles out of the acceptable bands recommended by grid codes, affecting the quality of service. A...

Conventional utility grids with power stations generate electricity only when needed, and the power is to be consumed instantly. This paradigm has drawbacks, including delayed demand response, massive energy waste, and weak system controllability and resilience. Energy storage systems (ESSs) are effective tools to solve these problems, and they pla...

Energy storage systems (ESSs) facilitate utility grid operations on various levels, which include power generation, power transmission, and power distribution. The benefits of these systems produce an overall improvement of grid stability, security, and resilience; cost reductions resulting from the need for less expensive reserve equipment; enhanc...

Nowadays the increasing presence of distributed generation based on renewable energies in the Distribution Grid, required new operation strategies than can be established based on Transactive Energy principles, that can improve its efficiency and management, and requires new devices with new control and monitoring capabilities. This Special Session...

In this paper the concept of wide input voltage range photovoltaic microconverter with post-fault operation capability is presented. This microconverter could remain operational in the case of short- or open-circuit failure of any switch of its front-end inverter. When the fault occurs, the control system automatically identifies the fault and appl...

The large-scale integration of renewable energy sources (RESs) and the increasing number of energy-storage (ES) systems connected to the grid will create a big challenge for power flow management at the distribution level. In this new scenario, a solid-state transformer (SST) will be a highly efficient key element for providing highly efficient and...

Three-phase power electronics converters (PECs) are commonly used as an interconnection of DC loads/sources with the electrical AC power system. Their important goal is to ensure three-phase symmetrical and pure sinusoidal grid current waveforms. Unfortunately, frequent adverse of grid voltage conditions like the occurrence of higher order harmonic...

Growing interest in DC-type Energy Storage Systems (ESS) and DC/DC converters has led to increased power ratings of such devices, which often requires parallel connection. The process of energy efficiency optimization of such modular systems is described in literature mainly in terms of the varying power demand, but the problem is more complex and...

In last years, the electrical systems are changed from centralized to distributed energy generation. Nowadays, the distributed generation systems consist many renewable energy sources (RESs) and active loads, connected to the grid by the power electronics converters (PECs). As a result, more often the PECs with novel functionalities like harmonic e...

There are two main types of solar power systems: thermal and photovoltaic (PV). The direct thermal use of solar energy for water heating is very old, mature and cheap technology. The world capacity of such solar thermal energy is over 400 GW‐thermal and is expected to increase sharply. For electricity generation, concentrated solar power is a promi...

This article constitutes an introductory part of the special section on Intelligent Fault Monitoring and Fault-Tolerant Control in Power Electronics, Drives and Renewable Energy Systems. In the current issue of the journal, the first part of this section is published. Accepted articles are focussed mainly on the sensor-fault diagnosis methods for T...

Multilevel converters are widely considered to be the most suitable configurations for renewable energy sources. Their high-power quality, efficiency and performance make them interesting for PV applications. In low-power applications such as rooftop grid-connected PV systems, power converters with high efficiency and reliability are required. For...

Generating dense multilevel voltage space structure using polygons of higher sides is one of the novel and elegant method to suppress low-order harmonics and to obtain refined sinusoidal voltages using voltage source inverters for variable frequency drive application without passive filters. Apart from the advantages of conventional multilevel inve...

Presented in the paper is a novel approach to synchronization of shore and ship power systems, providing a blackout-free supply from the shore. An application of the shore-to-ship synchronization strategy, proposed in the paper, instead of the commonly used ship-to-shore synchronization, enables a fuller exploitation of the high dynamic offered by...

Artykuł przedstawia układ sterowania elektrownią wiatrową z generatorem asynchronicznym klatkowym o mocy 11 kW. Generator asynchroniczny w porównaniu do generatora synchronicznego cechuje niższy koszt i większa niezawodność, jednak ze względu na zjawiska związane ze wzbudzeniem, konieczne jest stosowanie bardziej złożonego układu przekształtnikoweg...

Multilevel converters have been intensively investigated and developed since 1960s and have found successful industrial applications. The aim of this paper is to present state of the art as well as recent research and applications of cascaded multilevel converters, which are a very interesting solution for power distribution systems and renewable e...

This paper proposes an inverter topology to generate a 24-sided polygonal voltage space vector structure for variable speed drives using single DC source. The topology consists of a two-level inverter cascaded with two low-voltage floating capacitor-fed H-bridge cells. The 24-sided structure eliminates harmonics up to and including seventeenth and...

Solar systems have become very competitive solutions for residential, commercial, and industrial applications for both standalone and grid connected operations. This paper presents an overview of the current status and future perspectives of solar energy (mainly photovoltaic) technology and the required conversion systems. The focus in the paper is...

Artykuł przedstawia układ sterowania elektrownią wiatrową z generatorem asynchronicznym klatkowym o mocy 11 kW. Generator asynchroniczny w porównaniu do generatora synchronicznego cechuje niższy koszt i większa niezawodność, jednak ze względu na zjawiska związane ze wzbudzeniem, konieczne jest stosowanie bardziej złożonego układu przekształtnikoweg...

This paper presents Finite Control Set Model Predictive Control (FCS-MPC) for a three-phase quasi-Z-source (qZS) four-leg inverter under unbalanced load condition. The key novelty of the proposed control approach is eliminating the double-line frequency ripple in the inductor current with a simple and an effective approach. The proposed four-leg qZ...

Marine Energy Conversion Systems highlight among Non-Conventional Renewable Energy Sources for its availability and energy density. Most Marine Energy Conversion Systems are based on multi-generator units or arrays, projected to inject power to the grid in the MW range. The current solution for regulating generators and managing power output is the...

The Multiphase Multilevel Energy Generation Systems (M 2 EGS) base mainly on utilization of the multiphase machine such e.g. symmetrical, Single Neutral Point (SNP), 6-phase Induction Generator (6IG) that as other multiphase machines displays a feature to operate under phase loss fault condition. This property gives an ability to 'sacrifice' one le...

This paper presents the new implementation of the finite control states set model predictive control (FS-MPC) applied to three-level four-leg flying capacitor converter (FCC) operating as a shunt active power filter (SAPF). The three main issues regarding the algorithm development are described and the solutions are proposed. The first is addressed...

This article presents an overview of state-of-art solutions, advances, and design and research trends in medium-voltage (MV) drive technologies-and also discusses the challenges and requirements associated with the use of such drives. The choice and deployment of MV drives in industries are associated with numerous requirements related to the front...

In the paper the novel approach to application of the power electronic converters used as a part of shore-to-ship supply arrangement has been presented. Simulation results have confirmed possibility of using control of shore-side converter of shore-to-ship system for synchronizing with ship's voltage and load transferring by parallel work instead o...

This paper describes a basic idea of a multilevel multiphase Energy Generation Systems (EGS) that display an interesting feature of increased robustness on contrary to their 3-phase counterparts. It is achieved mainly due to utilization of multiphase generator that is inherently able to work under open-phase failure without any fault-tolerant algor...

Given their structural arrangement, photovoltaic (PV) modules exhibit parasitic capacitance, which creates a path for high-frequency current during zero-state switching of the converter in transformerless systems. This current has to be limited to ensure safety and electromagnetic compatibility. Many solutions that can minimize or completely avoid...

Wind turbines (WTs) are of high potential and most promising among renewable energy sources (RESs), largely contributing to world’s energy production. Moreover, within renewable energy technologies, wind energy technology is most advanced and the cost of wind power is close to that of fossil fuel power. Recent WT market trends have shown a 12%-13%...

The paper presents modeling and analysis of a 5-phase induction machine connected to 2-level 5-leg converter in case of open-phase failure. A control of the machine is accomplished using the Field Oriented Control with hysteresis current controllers. Moreover, a fault-tolerant algorithm is addressed and simulated.

Operation under partial shading condition (PSC) significantly decreases energy extracted from photovoltaic (PV) power plants. Non-uniform insolation caused by the passing clouds and natural obstacles results in some PV modules to be effectively excluded from operation. Commercially used maximum power point tracking (MPPT) algorithms do not have any...

Operation of the four-leg three-level flying capacitor Grid-Connected Converter (GCC) for renewable energy source (RES) is presented in this paper. The GCC with proposed hierarchical control method enables operation in presence of electrical grid disturbances by switching all legs separately to stand-alone or gridconnected mode of operation, allowi...

This paper presents a new control algorithm of High Instantaneous Power Impulse Converter (HIPIC). HIPIC is characterized by high power in megawatt range delivered to the output in very short time. A new algorithm allows fast rising of output current to the set value and a proper peak current control during the impulse by using two types of control...

Renewable energy sources (RESs) play an increasingly important role in modern distributed power generation systems. Some RES technologies, e.g., photovoltaics and highpower wind turbines (WTs), are already reaching a mature stage of development. However, there is another area that still needs further development and requires more attention: low-pow...

Partial shading and/or mismatch of photovoltaic (PV) modules can cause multiple maxima to occur in their power-voltage curves which can mislead conventional Maximum Power Point Tracking (MPPT) algorithms. This relates both to residential installations and large-scale power plants and can result in significant drop in the overall energy yield. To ov...

A microgrid (MG) is a local energy system consisting of a number of energy sources (e.g., wind turbine or solar panels among others), energy storage units, and loads that operate connected to the main electrical grid or autonomously. MGs provide flexibility, reduce the main electricity grid dependence, and contribute to changing large centralized p...

Conventional maximum power point tracking (MPPT) algorithms are designed under assumption that all modules are uniformly insulated and therefore can be characterized by a single maximum power point (MPP). At increasing power level PV arrays become larger in area. Moreover, to achieve a reasonable voltage level modules are connected in series, creat...

This paper presents a Multiphase Energy Generation System (MEGS) dedicated for applications requiring an increased reliability and fault-tolerant operation. It is shown that proposed solution allows for continuous performance of a multiphase back-to-back power converter in case of grid side converter leg failure. An inherent feature of multiphase m...

Large photovoltaic (PV) plants are being built all over the world, commonly having ratings up to 1 MW and reaching the level of 250 MW. These plants could be an alternative energy source, replacing conventional sources and solving humanity?s energy dilemma. However, the associated electronic systems, mainly inverters used for interfacing with the g...

A microgrid (MG) is a local energy system consisting a number of energy sources (e.g. wind turbine or solar panels), energy storage units and loads that operate connected to the main electrical grid or autonomously. MGs require complex management and advanced control. One of the most important parts in microgrid structure are power electronic conve...

This paper presents the implementation of the hierarchical control algorithm with droop method and equal reactive power sharing algorithm (ERPS) for an islanded AC microgrid. In the typical applications of microgrid the reactive power flow remains uncontrolled, what may negatively impact the efficiency of the generation unit and cause various probl...

Paper presents principles of multiphase machines and modelling of symmetrical 6-phase induction machine connected to 2-level 6-phase Voltage Source Inverter during chosen fault states. Presented model was built, analyzed in Matlab/Simulink simulation software and verified on laboratory test bench. © 2014, Wydawnictwo SIGMA - N O T Sp. z o.o. All ri...

This paper presents a generalized multilevel direct power control (ML-DPC) scheme for grid connected multilevel power converters. The proposed method extends the original DPC operating principle by considering only the closest subset of two level voltage vectors to the present switching state. The implementation of this principle requires the power...

This paper presents a comparison of three control strategies that were applied in the simulation model of a four-leg Shunt Active Power Filter based on two-level voltage-source converter. The research considered two classical methods and one proposed as an alternative. In the first an instantaneous power theory is used for the references calculatio...

Residential generation of electricity from renewable sources has grown substantially owing to active governmental stimulation programs in many countries. Permanent magnet synchronous generators (PMSG) are a preferable solution for residential wind turbines (WTs) due to their high efficiency and reliability. In the design of grid integration equipme...

This Chapter – divided into two main parts – is devoted to modulation and control of single–phase Active Front End converters. The first part presents the analysis and comparative studies of PWM techniques with unipolar switching for three main multilevel converter topologies: the parallel connected H–Bridge Converter, the H–Diode Clamped Converter...

The Chapter “AC-DC-AC converters for distributed power generation systems” is devoted to various topologies of AC-DC-AC converters and its components design. List of presented topologies are: classical three-phase/three-phase transistor-based AC-DC-AC converters (2-level and 3-level Diode Clamped Converters (DCC) and Flying Capacitors Converters (F...

Compiles current research into the analysis and design of power electronic converters for industrial applications and renewable energy systems, presenting modern and future applications of power electronics systems in the field of electrical vehicles. With emphasis on the importance and long-term viability of Power Electronics for Renewable Energy...

In low power distributed generation systems low cost together with the energy quality requirements are a key element. It is known that quality of voltage waveforms generated from multilevel converters is better in comparison with those from two-level. Due to advancements in power electronics and microcontrollers, multilevel converters are being bui...