Alex Van den Bossche

Alex Van den Bossche
Ghent University | UGhent · Department of Electrical Energy, Systems and Automation

Prof. dr. ir.
Since February 2021 retired, emeritus, but still 10% voluntary. Directory board of Sysplasma: cold plasma converters.

About

233
Publications
198,904
Reads
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3,606
Citations
Additional affiliations
January 1998 - present
Universiteit Gent
August 1990 - present
Ghent University
Position
  • Professor (Associate)
Description
  • https://biblio.ugent.be/person/801000552755 S.Member IEEE, spin-offs Inverto and Alenco, book: "Inductors and Transformers for Power Electronics". Interests: power conversion, in particular renewable energy and ultra-light vehicles.
August 1980 - present
Ghent University
Position
  • from PhD student to assistent professor to professor
Description
  • Master: Power electronics Technology of electrical installations Servo systems and industrial robots Safety of electrical and mechanical installations (electric side) Bachelor: Interdisciplinary project course (electro-mechanics, coordinator)

Publications

Publications (233)
Article
Full-text available
The present paper focuses on embedded electrical networks (EEN) under electrical fault conditions. Indeed, the EEN can be affected by small or large disturbances, such as a low voltage ride through or a short-circuit in distribution or consumption parts of the embedded network. In fact, these problems can lead to the network instability and also af...
Book
Full-text available
The application areas of batteries are currently booming. The recent generation of devices combines a high energy density with a reasonable cost and life expectancy, making them suitable not only for cars but also electric bikes, scooters, forklifts, gardening and household tools, storage batteries as well as airborne applications such as drones, h...
Article
A circulating-current-excited switched reluctance generator system using a standard diode rectifier is proposed and examined in this paper. It features a DC power source connected in series with the ring-connected windings, which provides the DC-bias current as the excitation current in the windings. Using a series-connected DC power source, a DC-b...
Article
Full-text available
Modular-multilevel converters (MMCs) are considered a useful technology in high-voltage direct current (hvdc) transmission systems. Since it offers many advantages like modular configuration with scalable output voltage. Voltage ripples on sub-module (SM) capacitors in MMC and circulating currents are two major challenges, which can affect the conv...
Article
Full-text available
Due to the spread of COVID-19 across the world and the increased need for non-contact thermometers to prevent the spread of disease, a new electronic thermometer has been designed and implemented for measuring human body temperature from a distance. This device is currently in use at building entrances to measure the body temperatures of employees,...
Conference Paper
This paper presents an IGBT gate driver with low parasitic capacitance between gate collector and low capacitance across the insulation. It shows the advantages of the proposed gate driver which are mainly the single supply with less parasitic capacitance and a desaturation protection. The desaturation can be easily detected at the level of the pow...
Conference Paper
The energy from solar can easily harnessed to be used for various applications and grid injection. For cooking, different techniques can be utilized. Some people use the sun to cook. Other people use batteries and inverters even at noon. Hence, the cooking system becomes expensive. In fact, Photovoltaic panels did not decrease considerably in price...
Article
Full-text available
Modular multilevel converter (MMC) is considered as a good technology for high-voltage direct current (HVDC) transmission systems. It can generate a good quality staircase output voltage waveform due to the cascaded connection of large number of identical sub-modules (SMs). Energy variations in SM capacitor lead to capacitor voltage fluctuations wh...
Article
Full-text available
The photovoltaic systems sector is in full renovation continually demanding a new system that allows the user to monitor his project from long distance. One of the systems that is currently being implemented in photovoltaic farms is known as the Internet of Things. Through this system, it is intended that the user can know in the real time the stat...
Article
This paper proposes a new driving method for a switched reluctance motor (SRM) by using a standard full bridge. The windings in the SRM are connected in series to build a ring structure, where a controllable DC source is inserted. Based on the new structure, the theoretical analysis and calculation are made to determine the control parameters. Besi...
Article
Full-text available
In this paper, a single-phase photovoltaic (PV) inverter fed by a boost converter to supply a freezer motor with variable DC input is investigated. The proposed circuit has two stages. Firstly, the DC output of the PV panel that varies between 150 and 300 V will be applied to the boost converter. The boost converter will boost the input voltage to...
Article
Full-text available
A battery management system (BMS) plays an important role in electric vehicles (EVs) in order to achieve a reasonable-lasting lifetime. An equalizing method is essential in order to obtain the best performance. A monitoring system is required to check if any cell voltage is high or low. In this paper, an equalizing and monitoring system for an ultr...
Conference Paper
Full-text available
The targets for 2050 are formulated: a climate neutral economy, but how to get it in a realistic and cost-effective way? Fortunately there is a game changer: the PV panels are cheaper than ever. The residential case is taken as an example. PV panels can be put on the full roof, this over-sizing permits to get about the required electricity even in...
Article
Full-text available
In this paper, the concept of active cell-balancing technique, by using a multiple-outputs double-forward converter for lithium-ion (Li-ion) batteries, is investigated. It controls two times more cells than secondaries, and it equalizes eight cells in a series. In this method, four secondaries can reasonably be wound with the same back electromotiv...
Article
Full-text available
In this paper, a ćuk converter balancing method by using a coupled inductor for lithium based batteries is investigated. The proposed circuit is an active balancing circuit that will equalize eight battery cells in a series. In electrical vehicles (EV), a battery management system (BMS) is a vital task to achieve the best performance of the batteri...
Article
Full-text available
In this paper, a new smart monitor and control system has been designed for injected power application to grid from a three-phase photovoltaic inverter (a smart monitor and control system (SMCS)). The system consists two main units. Firstly, the control system unit: this unit connects directly to the inverter to measure the output voltage of three-...
Article
Full-text available
A new structure of a linear switched reluctance motor is proposed in this paper. With the permanent magnet inserted in the movers, the performance of the original motor is improved. An electromagnetic analysis is done by using the finite element analysis. The influence of the permanent magnets in different positions of the movers on the electromagn...
Conference Paper
In This paper, the concept of flyback converter cell balancing method for lithium based batteries in ultralight Electrical Vehicle (EV) is investigated. In electrical vehicles, Battery Management System (BMS) plays and important role, in order to achieve a reasonable life time and best performance. A cell balancing circuit is essential to equalize...
Conference Paper
In this paper, an active cell equalization technique based on ćuk converter balancing for lithium ion (Li-ion) batteries is investigated. The circuit equalizes eight cells, which are connected in series in a battery pack. In Electrical Vehicles (EV), batteries act an important role, due to the fact that the most expense in EV is the cost of the bat...
Conference Paper
Range extended electric vehicles are becoming the better choice for urban driving. They pave the way for a reduced battery pack, efficient fuel economy, better mileage and an ease for a range anxiety. Designers of vehicular electronics face number of technical challenges like overcurrent, overvoltage and over-temperature due to some abnormalities i...
Article
Full-text available
Photovoltaics is the core of the greatest current system that using solar energy and it is regarded as the basic of sustainable engineering techniques. It is the method of exchanging daylight straightly to electricity power. The LoRa communication technology is a far-range, economic-power, small rate of bit technology. It is sponsored as a basic se...
Article
Full-text available
This paper presents and describes the design and implementation of a new gate driver circuit for a three-phase grid tide photovoltaic inverter system using SIC- MOSFET at the power stage. The proposed design consists of a 5 kW power threephase inverter system with a new isolated gate driver related to IGBT, MOSFET and SIC-MOSFETs. The designed circ...
Article
Full-text available
In this paper, the concept of a forward balancing technique fed by a buck converter for lithium-based batteries in Electrical Vehicle (EV) applications is investigated. The proposed active topology equalizes eight cells in a series in a battery pack, by using a forward converter for each battery pack and the whole battery packs, using a buck conver...
Article
Full-text available
: Modular multilevel converters (MMCs) are quickly emerging as a suitable technology for a voltage-source converter-based high-voltage direct-current (VSC-HVDC) transmission systems due to its numerous advantages as reported in literature. However, for a large DC-network, MMCs require large numbers of sub-modules (SMs) and switches, which makes its...
Conference Paper
Full-text available
Against global warming more renewable energy should be used [1,6]. The direct use of PV can be cost effective and help reducing it. It can be stand-alone or as a complement of the grid. In the early stage of photovoltaic panels already pumps worked "as and when the sun shines". Gradually PV was used to inject in the grid and at off grid using batte...
Article
Full-text available
This article developed a coupled inductor balancing method to overcome cell voltage variation among cells in series, for Lithium Ion (Li-ion) batteries in Electrical Vehicles (EV). For an "eight cells in series" example, the developed balance circuit has four inductors, one magnetic circuit with one winding per two cells, and one control switch per...
Conference Paper
It is known that in order to drive a switched reluctance motor (SRM), the power converter is required, which makes it different from other common type of motors such as brushless direct current motor (BLDC). As a result, the cost of the control system for SRM is higher than the conventional inverter structure of control system for BLDC. A new contr...
Article
Full-text available
Power electronic converters may have a quite long lifetime, but some applications such as converters for automotive and photovoltaic could even desire a longer life. One of the elements to increase the lifetime of converters is to avoid electrolytic capacitors. They can be replaced by metalised film capacitors or ceramic capacitors. A lot of conver...
Conference Paper
Full-text available
In the recent days, Switched Reluctance Machines (SRMs) occupy a great interest in several industrial applications thanks to their several advantages such as simple and robust construction, low cost, high reliability, and easy cooling. However, SRMs have also drawbacks such as some challenges in their control, high acoustic noise, high levels of to...
Conference Paper
This paper presents the concept of charging of Lithium Iron Phosphate (LFP) battery cells in an Electric vehicle (EV). Charger topologies play an important role in EVs to increase the performance of the batteries. The batteries should be charged and discharged to achieve the best performance and long lifetime. In this paper, the design of a charger...
Conference Paper
The concept of active cell equalizing method based on multi-winding transformer balancing for Lithium Ion (Li-ion) batteries is presented in this paper. In a battery pack, voltage differences exist between cells due to charging and discharging process thus, a battery management system (BMS) is required to ensure that all battery cells are equally c...
Article
Full-text available
In this paper, the delay problem of a deadbeat current control for a single-phase PWM inverter connected to the grid is investigated by applying z-transform. First, the effect of delay during one sampling period is discussed and then a predictive current observer-based controller is considered. The main objective of the control system is that the c...
Article
Full-text available
This paper proposes a new driving method for switched reluctance motors (SRMs) using the standard full-bridge inverter. In spite of changing the internal structure of an SRM, the proposed method uses an extra ring structure circuit to make it possible for the inverter to drive the SRM. Next to the standard converter, a controllable DC source is nee...
Article
Full-text available
The use of renewable energy such as wind power is one of the most affordable solutions to meet the basic demand for electricity because it is the cleanest and most efficient resource. In Algeria, the highland region has considerable wind potential. However, the electrical power system located is this region is generally not powerful enough to solve...
Article
Sophisticated techniques are required for getting accuracy in high frequency power losses of magnetic. This paper presents a high frequency power loss measurement platform (full bridge) that provides accurate assessing of losses in magnetic components. This is obtained by a construction of a thermal shunt with radiator to measure the losses of the...
Conference Paper
Full-text available
This paper presents and describes the design and implementation of a new gate driver circuit for a three-phase grid tide photovoltaic inverter system using SIC- MOSFET at the power stage. The proposed design consists of a 5 kW power three-phase inverter system with a new isolated gate driver related to IGBT, MOSFET and SIC-MOSFETs. The designed cir...
Conference Paper
The constantly decreasing prices of the battery storage systems make them a very attractive solution for mitigating overvoltages and voltage unbalance in low voltage grids with high penetration of renewable energy resources. A centralised storage device, connected at the end of the feeder can be a very effective solution for dealing with overvoltag...
Chapter
Full-text available
In this chapter, a comparative analysis is made for doubly-fed induction-generator (DFIG) low-voltage ride-through (LVRT) solutions. It is supposed to improve the LVRT capability of DFIG under unbalanced grid voltage conditions by hardware or software solutions. Therefore, this chapter proposes a low-cost software LVRT solution based on an efficien...
Conference Paper
This paper presents the concept of active cell balancing mechanism for Lithium Ion (Li-ion) batteries for Electrical Vehicles (EV) based on inductor balancing method. It equalizes eight number of cells in a series. Voltage differences always exist between cells, therefore a battery management system (BMS) is required to ensure that all cells are eq...
Conference Paper
This paper presents the concept of a cell balancing method for Lithium Ion (Li-ion) batteries for Electrical Vehicles (EV), based on Resonant Switched Capacitor Converter (RSCC) balancing technique. It equalizes eight number of cells in a series. In Li-ion batteries, voltage differences always exist between cells due to charging and discharging pro...
Article
Full-text available
Nowadays, most three-phase, "off the shelf" inverters use electrolytic capacitors at the DC bus to provide short term energy storage. However, this has a direct impact on inverter lifetime and the total cost of the photovoltaic system. This article proposes a novel control strategy called a 120 ∘ bus clamped PWM (120BCM). The 120BCM modulates the D...
Article
Full-text available
Besides their magnetic properties, Mn-Zn ferrites are also characterized by appreciable electrical properties. This electromagnetic nature of Mn-Zn ferrites material properties causes a dimensional resonance to occur in samples. The latter hinders measurements of the frequency dependences of intrinsic permittivity and electrical conductivity. In th...
Article
Full-text available
Three-phase grid synchronization is one of the main techniques of the three-phase grid connected power inverters used in photovoltaic systems. This technique was used to reach the fast and accurate three-phase grid tied inverter synchronization. In this paper a new synchronization method is presented on the basis of integrating the grid voltage two...
Article
Full-text available
This paper studies the use of distribution static synchronous compensator (D-STATCOM) integrated with wind farm based on doubly fed induction generators. The short-term energy storage system based on a supercapacitor is introduced in this study to improve the operation of D-STATCOM. The dynamic performances of the grid-connected wind farm with D-ST...
Conference Paper
Time delay always exists in several control processes, especially the integrating system, whereas a proportional integral (PI) controller is most widely used. It is mandatory to design a PI controller in a system to obtain a fast and effective response, taking time delay into account, as well as the parameters of the process. A proposed tuning meth...
Conference Paper
A proportional integral derivative (PID) controller is most widely applied in control processes, where the delay time always exists. Because of the characteristics of derivative, which is always replaced with a derivative filter in the practical control system. Besides the parameters of PID controller, the parameter of derivative filter is also req...
Presentation
Full-text available
If electric cars are powered by electricity from natural gas combined cycle, and if the parasitic methane emissions are counted, and the energy to manufacture the battery, the global warming contribution CO2eb (equivalent and with battery) is not lower than a low consumption combustion engine car. Only when the major part of the electricity is rene...
Conference Paper
Full-text available
In a number of countries, people are concerned about interruptions to the electricity grid, which can range from seconds to hours, and even a few days. Iraq has suffered from a severe shortage of processing power since 1990, following economic sanctions imposed on it by the United Nations. The problem worsened after 2003, with electric energy inter...
Conference Paper
Full-text available
The maximum power point tracking controller constitutes a fundamental part in photovoltaic systems and its algorithm is used to get maximum power available from a PV unit under different environmental conditions. In this paper, several techniques are discussed regarding its ability to detect the maximum power point, system convergence speed, ease o...
Conference Paper
The constantly increasing interest towards the electric and plug-in hybrid electric vehicles will increase the voltage unbalance and overvoltages in the distribution grids and therefore, the power quality of the grid voltage might be put in a danger. To overcome this issue more sophisticated control strategies for the battery chargers must be used...
Conference Paper
In this paper, a new smart system has been designed that can monitor and control the power injected to grid from a three-phase photovoltaic inverter (a smart monitoring and controlling system (SMCS)). The system is designed as two units. Firstly, the control system unit: this unit connects directly across the inverter in order to measure the status...
Article
Large inrush currents can be harmful to equipment subjected to it and can also disturb other devices through voltage dips. Traditional ways of dealing with large inrush currents include the usage of parasitic elements in the supply, NTC resistances and start-up relays. These solutions have several disadvantages amongst which are a non-negligible st...
Conference Paper
Full-text available
This paper presents a new operating type of a three phase photovoltaic PID current control system connected to the low voltage distribution grid. This operating type introduces a 120-degree bus clamp PWM control method (120° BC-PWM). A 120° BC-PWM is a special switching sequences technique employing bus clamp sequences that use only one phase under...
Conference Paper
Low voltage power applications suffer from losses in diode voltage drops. For example, the Lundell car alternator has a low efficiency, partly due to a high-current diode voltage drop of 1.1V, being 2.2V in a bridge configuration, resulting in 15% of output voltage and corresponding losses. Schottky diodes have a lower drop, but are quite fragile a...
Article
The nature of losses in ferrites has not been fully revealed yet. To achieve means for further investigation of ferrite core loss due to E-field, we investigated the response of middle and side legs, cut from commercially available PQ core halves, to an applied electric field, by injecting a sine wave current in the samples. Using conventional labo...
Article
This paper presents a new operating type of a three phase photovoltaic PID current control system connected to the low voltage distribution grid. This operating type introduces a 120-degree bus clamp PWM control method (120° BC-PWM). A 120° BC-PWM is a special switching sequences technique employing bus clamp sequences that use only one phase under...
Article
Nowadays, most three-phase, “of the shelf” inverters use electrolytic capacitors at the DC bus to provide short term energy storage. However, this has a direct impact on inverter lifetime and the total cost of the photovoltaic system. Tis article proposes a novel control strategy called a 120∘ bus clamped PWM (120BCM). Te 120BCM modulates the DC bu...
Article
Full-text available
A proportional integral derivative (PID) controller is the most commonly used in integrating process, where the time delay is inevitable. In order to tune a PID controller, several factors should be taken into account such as time delay, mathematic model and the feedback signals. Some existed tuning methods failed to obtain the correct parameters w...
Conference Paper
Full-text available
Climate change, sea level rise and pollution are actual concerns. However, most of people are not aware how much things have changed at the North Pole region, where the ice volume probably first disappears in the month of September in the years 2020-2025 and 50% of the year around 2040. The solutions are to drastically reduce CO2 and CH4 emissions....
Poster
Full-text available
The aim of this work is to design a smart monitoring and control system. The smart voltage and current monitoring system that used for three phase home application is implemented and has been tested successfully. The aim of this work is to design a smart monitoring and control system by Internet of Things (IOT) technology.
Article
Full-text available
The influence of operating frequency on parameters of power electronic transformers is investigated. An improved fast design algorithm is used to calculate competitive transformer designs based on ferrite cores and round wires under the same input parameters, while varying the operating frequency in a wide range (25 kHz to 400 kHz). Two sets of des...
Article
Full-text available
A fast and reliable current control is often the base of power electronic converters. The traditional constant frequency peak control is unstable above 50 % duty ratio. In contrast, the constant off-time peak current control (COTCC) is unconditionally stable and fast, so it is worth analyzing it. Another feature of the COTCC is that one can combine...
Conference Paper
Full-text available
The objectives of this article were to design a low-cost three-phase AC voltage measurement circuit and new Android smartphone application to monitor the measuring voltage from a safe distance. The smart distance power electronic measurement (SDPEM) system was designed based on an Arduino UNO R3 board used as a microcontroller to read and calculate...
Conference Paper
Full-text available
Dedicated wide band current transformers exist. However, in this paper, an evaluation is made of the characteristics of a current transducer based on a standard available common mode filter inductor. Based on the inductance and resonance frequency, a frequency span of 0.5 Hz up to 50 MHz can be achieved. The performance is possible by the fact that...