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Papers by Jeroen Van den Keybus

Research paper thumbnail of Time-domain homogenization of litz-wire bundles in FE calculations

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

Research paper thumbnail of Grid-connected photovoltaics in the urban environment. An experimental approach for system optimization

Proceedings of European meeting about City of Tomorrow, 1999

ABSTRACT

Research paper thumbnail of Virtual circuit control for active damping of LCL resonance in grid-connected voltage source converters

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016

This paper presents a virtual circuit controller (VCC), which provides a systematic structured me... more This paper presents a virtual circuit controller (VCC), which provides a systematic structured method to stabilize the resonance of an LCL filter in a grid-connected voltage source converter. The semiconductor switches are controlled to mimic the behaviour of a virtual reference circuit. The properly-damped circuit by a resistor in parallel with a filter capacitor is focused on and selected as the reference circuit. A linear transformation matrix is introduced indicating the resemblance between the physical and virtual circuits, and is employed to map the states between both circuits. Accordingly both analog and digital control laws are systematically computed. The insight into the feedback of the capacitor current and voltage through proportional gains is clarified. While the consequence of the former is conventionally known to emulate a resistor for damping purpose, the latter is newly used to emulate an inductor for adjusting the inner-loop control bandwidth and improving the robustness. A Kalman filter is used to deal with the inherent time delay. The detailed discrete-time state-space model of the complete system is derived. The design example of the proportional current controller is demonstrated. The simulation results illustrate the effectiveness of the damping and the robustness of the system against component-value variations.

Research paper thumbnail of Virtual circuit control for multi-converter smart grid applications

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), 2016

This paper presents a scalable synchronous buck converter design. Innovation lies with the design... more This paper presents a scalable synchronous buck converter design. Innovation lies with the design method and control algorithms. Firmware makes the converter's half-bridges switch as to emulate a resistively terminated ladder network. This actively damps filter resonances and prevents circulating currents when multiple converters operate in parallel.

Research paper thumbnail of Definitions using a DSP based Prototyping

This paper presents and compares the outcome of the two most elaborated power definitions in the ... more This paper presents and compares the outcome of the two most elaborated power definitions in the frequency domain. For this study the electrical power quantities proposed in the new IEEE Standard 1459-2000 and developed by L. Czarnecki are considered. These definitions are implemented and applied to some case studies in real life measurements. The general structure of the in-house DSP/FPGA based system used for the prototyping 01 the measurement device and the software environment used to support power measuring algorithms performed on a low voltage distribution grid are discussed. Finally, a THD decomposition depending on the distortion origin will be presented.

Research paper thumbnail of Common Mode Poles and Eigenmodes for Various Grounding Configurations in Motor Applications with Variable Speed Drives

Proceedings of 16th …, 2004

... 200 −100 0 100 200 Figure 29: Inverter voltage V3 [V] versus time [µs] ... J. Knockaert works... more ... 200 −100 0 100 200 Figure 29: Inverter voltage V3 [V] versus time [µs] ... J. Knockaert works at the Laboratory for EMC at the Katholieke Hogeschool Brugge-Oostende (KHBO), Department of Industrial Sciences and Technology, under supervision of prof. JA Catrysse. ...

Research paper thumbnail of Rapid prototyping platform for distributed power technology frond-ends

Research paper thumbnail of Ontwikkeling van een universeel meet- en stuurplatform voor elektrische energie in een geliberaliseerde elektriciteitsmarkt

Research paper thumbnail of Energy consumption of domestic refrigerators using electronic energy saving devices

Research paper thumbnail of A DSP-based electricity metering system

Research paper thumbnail of Digital control of a single-phase voltage source inverter for renewable energy sources

Research paper thumbnail of DSP-based energy measurement system with power line communication interface

Research paper thumbnail of Using a C6000 DSP in educating motor control: the electric go-kart project (on CDRom)

Research paper thumbnail of Power quality measurements for grid connected wind turbines using a DSP based prototyping system

Research paper thumbnail of Design of a small personal electric vehicle as an educational project

Engineering education should comprise more than theoretical knowledge. A design project with clos... more Engineering education should comprise more than theoretical knowledge. A design project with close relationship to present technology and the student’s environment provides hands-on engineering experience and training of general engineering skills. Electric vehicles are an example of technology. Building an electric go-kart is an economical and real-life educational design project.

Research paper thumbnail of Development of an Experimental Tool to Measure Power Quantities

Renewable Energy and Power Quality Journal

Research paper thumbnail of Frequency-domain homogenization for impedance characterization of litz-wire transformers in 2-D finite element models

2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER), 2016

Research paper thumbnail of Performance of Real-Time Power Electronic Converter Control Algorithms Implemented on a Personal Computer

2006 IEEE International Symposium on Industrial Electronics, 2006

ABSTRACT Standard personal computer (PC) platforms are increasingly used as a digital signal proc... more ABSTRACT Standard personal computer (PC) platforms are increasingly used as a digital signal processing unit in research and industrial applications. An important class of these applications is closed-loop system control. This paper reports on the performance of computer generated system controller programs running on a Linux based real-time operating system (RTOS). In these tests, two induction motor control algorithms control a power drive using the peripheral component interconnect (PCI) interface. It is shown that loop control frequencies of up to 10 kHz are easily achievable under moderate hardware requirements

Research paper thumbnail of DSP and FPGA based platform for rapid prototyping of power electronic converters and its application to a sampled-data three-phase dual-band hysteresis current controller

2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289), 2002

A platform for prototyping industry relevant power electronic converters and systems is presented... more A platform for prototyping industry relevant power electronic converters and systems is presented. The use of a digital signal processor (DSP) and programmable logic (field programmable gate array-FPGA-and complex logic device-CPLD) shortens implementation time and reduces electromagnetic interference (EMI) susceptibility. The design concept is demonstrated with an implementation of a modified three-phase dual hysteresis band current controller

Research paper thumbnail of Small-signal stability of grids with distributed low-inertia generators taking into account line phasor dynamics

18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005

Research paper thumbnail of Time-domain homogenization of litz-wire bundles in FE calculations

2016 IEEE Energy Conversion Congress and Exposition (ECCE)

Research paper thumbnail of Grid-connected photovoltaics in the urban environment. An experimental approach for system optimization

Proceedings of European meeting about City of Tomorrow, 1999

ABSTRACT

Research paper thumbnail of Virtual circuit control for active damping of LCL resonance in grid-connected voltage source converters

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016

This paper presents a virtual circuit controller (VCC), which provides a systematic structured me... more This paper presents a virtual circuit controller (VCC), which provides a systematic structured method to stabilize the resonance of an LCL filter in a grid-connected voltage source converter. The semiconductor switches are controlled to mimic the behaviour of a virtual reference circuit. The properly-damped circuit by a resistor in parallel with a filter capacitor is focused on and selected as the reference circuit. A linear transformation matrix is introduced indicating the resemblance between the physical and virtual circuits, and is employed to map the states between both circuits. Accordingly both analog and digital control laws are systematically computed. The insight into the feedback of the capacitor current and voltage through proportional gains is clarified. While the consequence of the former is conventionally known to emulate a resistor for damping purpose, the latter is newly used to emulate an inductor for adjusting the inner-loop control bandwidth and improving the robustness. A Kalman filter is used to deal with the inherent time delay. The detailed discrete-time state-space model of the complete system is derived. The design example of the proportional current controller is demonstrated. The simulation results illustrate the effectiveness of the damping and the robustness of the system against component-value variations.

Research paper thumbnail of Virtual circuit control for multi-converter smart grid applications

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe), 2016

This paper presents a scalable synchronous buck converter design. Innovation lies with the design... more This paper presents a scalable synchronous buck converter design. Innovation lies with the design method and control algorithms. Firmware makes the converter's half-bridges switch as to emulate a resistively terminated ladder network. This actively damps filter resonances and prevents circulating currents when multiple converters operate in parallel.

Research paper thumbnail of Definitions using a DSP based Prototyping

This paper presents and compares the outcome of the two most elaborated power definitions in the ... more This paper presents and compares the outcome of the two most elaborated power definitions in the frequency domain. For this study the electrical power quantities proposed in the new IEEE Standard 1459-2000 and developed by L. Czarnecki are considered. These definitions are implemented and applied to some case studies in real life measurements. The general structure of the in-house DSP/FPGA based system used for the prototyping 01 the measurement device and the software environment used to support power measuring algorithms performed on a low voltage distribution grid are discussed. Finally, a THD decomposition depending on the distortion origin will be presented.

Research paper thumbnail of Common Mode Poles and Eigenmodes for Various Grounding Configurations in Motor Applications with Variable Speed Drives

Proceedings of 16th …, 2004

... 200 −100 0 100 200 Figure 29: Inverter voltage V3 [V] versus time [µs] ... J. Knockaert works... more ... 200 −100 0 100 200 Figure 29: Inverter voltage V3 [V] versus time [µs] ... J. Knockaert works at the Laboratory for EMC at the Katholieke Hogeschool Brugge-Oostende (KHBO), Department of Industrial Sciences and Technology, under supervision of prof. JA Catrysse. ...

Research paper thumbnail of Rapid prototyping platform for distributed power technology frond-ends

Research paper thumbnail of Ontwikkeling van een universeel meet- en stuurplatform voor elektrische energie in een geliberaliseerde elektriciteitsmarkt

Research paper thumbnail of Energy consumption of domestic refrigerators using electronic energy saving devices

Research paper thumbnail of A DSP-based electricity metering system

Research paper thumbnail of Digital control of a single-phase voltage source inverter for renewable energy sources

Research paper thumbnail of DSP-based energy measurement system with power line communication interface

Research paper thumbnail of Using a C6000 DSP in educating motor control: the electric go-kart project (on CDRom)

Research paper thumbnail of Power quality measurements for grid connected wind turbines using a DSP based prototyping system

Research paper thumbnail of Design of a small personal electric vehicle as an educational project

Engineering education should comprise more than theoretical knowledge. A design project with clos... more Engineering education should comprise more than theoretical knowledge. A design project with close relationship to present technology and the student’s environment provides hands-on engineering experience and training of general engineering skills. Electric vehicles are an example of technology. Building an electric go-kart is an economical and real-life educational design project.

Research paper thumbnail of Development of an Experimental Tool to Measure Power Quantities

Renewable Energy and Power Quality Journal

Research paper thumbnail of Frequency-domain homogenization for impedance characterization of litz-wire transformers in 2-D finite element models

2016 Eleventh International Conference on Ecological Vehicles and Renewable Energies (EVER), 2016

Research paper thumbnail of Performance of Real-Time Power Electronic Converter Control Algorithms Implemented on a Personal Computer

2006 IEEE International Symposium on Industrial Electronics, 2006

ABSTRACT Standard personal computer (PC) platforms are increasingly used as a digital signal proc... more ABSTRACT Standard personal computer (PC) platforms are increasingly used as a digital signal processing unit in research and industrial applications. An important class of these applications is closed-loop system control. This paper reports on the performance of computer generated system controller programs running on a Linux based real-time operating system (RTOS). In these tests, two induction motor control algorithms control a power drive using the peripheral component interconnect (PCI) interface. It is shown that loop control frequencies of up to 10 kHz are easily achievable under moderate hardware requirements

Research paper thumbnail of DSP and FPGA based platform for rapid prototyping of power electronic converters and its application to a sampled-data three-phase dual-band hysteresis current controller

2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289), 2002

A platform for prototyping industry relevant power electronic converters and systems is presented... more A platform for prototyping industry relevant power electronic converters and systems is presented. The use of a digital signal processor (DSP) and programmable logic (field programmable gate array-FPGA-and complex logic device-CPLD) shortens implementation time and reduces electromagnetic interference (EMI) susceptibility. The design concept is demonstrated with an implementation of a modified three-phase dual hysteresis band current controller

Research paper thumbnail of Small-signal stability of grids with distributed low-inertia generators taking into account line phasor dynamics

18th International Conference and Exhibition on Electricity Distribution (CIRED 2005), 2005