EPE Association: EPE 2013 - DS3a: Power System Integration

EPE 2013 - DS3a: Power System Integration
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 03: Power system integration > EPE 2013 - DS3a: Power System Integration

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   A simplification method of a modeling of stray magnetic couplings in EMC filters
By Takashi MASUZAWA, Eckart HOENE [View]
[Download]

Abstract: Electromagnetic Compatibility (EMC) filters for power electronic devices are strongly influenced by magnetic couplings between all components in the system. Therefore, several methods were proposed to predict these influences. Although a precise simulation can be realized utilizing the past methods, it is not practical to consider the all existing couplings especially for a development process in industry due to its high complexity and required empirical knowledge. This paper proposes a simplification method that identifies the most significant influences and reduces an investigative effort remarkably.

   Analysis and Optimization of Module Integrated MPPT Converter Based Residential PV System
By Feng WANG, Pengju KONG, Fred C. LEE, Fang ZHUO [View]
[Download]

Abstract: This paper addresses the power loss issue results from mismatch case which is critical to improving overall efficiency of the residential PV system. In general, a dedicated DC-DC converter with an extra distributed MPPT (Max Power Point Tracking) algorithm, what is called a MIMC (Module Integrated MPPT Converter), is connected to each panel to reduce the mismatch impact. However, even by adopting the MIMCs, it is not always possible to guarantee all the panels working at their MPP operation points. In this paper, the characteristic of the MIMC based residential PV system is analyzed firstly. After that, the criteria for ensuring that all the MIMCs working on their MPPs are also derived. Then, an optimized MIMC system configuration is proposed to allow all the PV panels to work on its individual MPP (Max Power Point) regardless of the mismatch case. Finally, the simulation and experimental results validated the proposed system structure.

   Concept and design of hybrid interleaved and isolated micro-converter for low power applications
By Zijian XIAO, Lyubomir KERACHEV, Marc COUSINEAU, Jean-Christophe CREBIER, Emmanuel SARRAUTE, Yves LEMBEYE, Thierry MEYNARD [View]
[Download]

Abstract: In this paper, a hybrid interleaved and isolated micro-converter (5V/2A/1MHz) dedicated to low power conversion is presented. Its structure allows the implementation of planar coupler with highly reduced dimensions. The control module and the power module of micro-converter are integrated in two chips respectively in order to illustrate the system integrability and to reduce the complexity of the micro-converter.

   Control of Grid-Connected Power Converters Based on Virtual Admittance and Active Power Synchronization
By Pedro RODRIGUEZ, Ignacio CANDELA, Costantino CITRO, Catalin GAVRILUTA, Joan ROCABERT, Alvaro LUNA [View]
[Download]

Abstract: The connection of electronic power converters to the electrical network is increasing mainly due to massive integration of renewable energy systems. However, the electrical dynamic performance of these converters does not match the behavior of the network, which is mainly formed by generation facilities based on big synchronous generation systems. Depending on the desired electrical operation mode different control structures can be implemented in the converters in order to get adapted with the grid conditions. However, changing between different control structures and operation is not an optimal solution, as the resulting system results complex and is not highly robust. As an alternative, this paper presents a new control technique for grid connected power converters based on the concept of virtual admittance. The proposed control permits to emulate the electrical performance of generation facilities based on classical synchronous generators with a power converter, with no need of implementing different control structures, giving rise to a system that provides a friendly and robust operation with the network.

   Extended Methodology to Synthesize High Step-up Integrated DC-DC Converters
By Antonio Manuel ANDRADE, Luciano SCHUCH, Jacson DREHER, Mario Lucio SILVA MARTINS, Rafael BELTRAME [View]
[Download]

Abstract: This paper proposes an extended methodology to generate high step-up DC/DC converters. The methodology is based on integration of the common circuits of the standard non-isolated DC/DC converters and association of the converters output sections. For the integration of two non-isolated converters, the output sections are series connected, meanwhile parallel and cascaded connection are only possible for the integration of one isolated converter with a non-isolated one. Further simulation and experimental analyses are carried out for the Integrated boost-Zeta and Integrated boost-flyback converters.

   Frequency Domain Prediction of Conducted EMI in Power Converters with front-end Three-phase Diode-bridge
By Junsheng WEI, Dieter GERLING, Marek GALEK [View]
[Download]

Abstract: This paper investigates the frequency domain prediction of conducted EMI within power converters supplied by front-end three-phase diode-bridge. Noise source, noise propagation path and noise receiver are identified. Difficulty due to the presence of diode-bridge is analyzed and a method is proposed and verified by measurement to take the variation of propagation path into account while still enable the simulation to be carried out in frequency domain.

   Hybrid Time-Frequency EMI Noise Sources Modeling Method
By Clement MARLIER, Arnaud VIDET, Nadir IDIR, Houmam MOUSSA, Regis MEURET [View]
[Download]

Abstract: The electrical power aboard aircraft tends to increase thanks to the progress in switched-mode power converters. The generalization of the use of power converters leads to EMI issues. The EMC standards compliance is often obtained by adding an EMI filter after a measurement on a prototype. Since prototyping is costly and time consuming, it is interesting to evaluate the level of EMI without prototyping. To achieve this goal, frequency-domain simulation is interesting, but classical method can not give a good representation of non-linear transition of the power switches. That is why a new frequency domain method is proposed. This method uses two equivalent generators topologies and combine them to obtain an accurate results. The combination is based on the use of validity functions associated with each topology. This paper is focused on the impact of the validity functions on the final result.

   Implementation of High Speed Control Network with Fail-Safe Control and Communication Cable Redundancy in Modular Multilevel Converter
By Chuen Ling TOH, Lars NORUM [View]
[Download]

Abstract: A simple and fast internal communication system (ring communication network) had been proposed to simplify the wiring system in complex multilevel converter, such as Modular Multilevel Converter (MMC). This paper will present a fail-safe control and communication system for a MMC. A fail-safe control is demanded to ensure MMC continue operating without interruption when a malfunction power switch is detected. On the other hand, if a section of the communication cable breaks, the data transfer will be interrupted. Hence, a communication cable redundancy protocol must be enhanced in a ring control interface to increase the reliability of the MMC.

   Improving the voltage profile of a medium voltage grid using distributed generation units
By Georgios TSENGENES, Georgios ADAMIDIS, Athanasios KARLIS [View]
[Download]

Abstract: In this paper the impact of photovoltaic (PV) system connected to the medium voltage distribution gird using three-phase three-level inverter and step-up transformer will be investigated. The PV inverter is capable to control active and reactive power independently. The impact to the grid voltage profile of both active and reactive power regulation of the PV system will be examined. In order to simplify the control scheme and improve the performance of the converters the p-q theory has been chosen due to the ability to compensate the reactive power of the load. The proposed electric power system was investigated via simulation results during steady state and transient response. The analysis will be focused on the grid voltage profile improvement regarding of the of the inverter’s active and reactive power injection.

   Input impedance investigation of a DC-DC converter on a large frequency range: a novel analytical approach
By Achour ALES, Genevieve FRANTZ, Jean-Luc SCHANEN, Djelloul MOUSSAOUI, James ROUDET [View]
[Download]

Abstract: This paper proposes to investigate the Differential Mode (DM) input impedance of a DC-DCconverter. This parameter is crucial for network analysis, in a wide frequency range, from very lowfrequency for network stability analysis up to several tens of MHz for EMC studies. Analyticalapproach based on signal processing theory is developed, validated by PSPICE simulations andexperimental measurements. The results are discussed in comparison with an "off-line" impedancemeasurement, the converter being disconnected from the DC source.

   Integrated Buck-Boost Converter with Matrix-POL Architecture
By Ryota SHIBAHARA, Yoichi ISHIZUKA, Seiya ABE, Tamotsu NINOMIYA [View]
[Download]

Abstract: In this study, integrated buck-boost converter with the Matrix-POL power supply system is proposed.From the simulation results, the validity of the Matrix-POL is revealed. The results revealed that thefast response to the load current and the voltage change can be done with duty and parallel numbercontrol by the proposed system.

   Reducing of parasitic inductive couplings effects in EMI filters
By Laurent TAYLOR, Wenhua TAN, Xavier MARGUERON, Nadir IDIR [View]
[Download]

Abstract: This paper presents a method to improve EMI filters performances, based on the optimization of the component layout. It's well known that the EMI filter insertion losses are highly degraded by the high frequency stray couplings between filter passive components. The latter can be reduced by acting on these components' placement. This paper proposes a method that allow to determine the components' positions for minimizing the parasitic coupling between them. Their placement is deduced from the study of current distributions and magnetic field induced by these components. This method examines more specifically the parasitic inductive couplings between inductors and capacitors. The choice of the placement that minimizes couplings in 3D is determined to achieve better performance. Some prototypes are realized and characterized to validate the proposed method. EMC/EMI, EMI filter, Passive component, Design

EPE 2013 - DS3a: Power System Integration
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 03: Power system integration > EPE 2013 - DS3a: Power System Integration
	[return to parent folder]

	A simplification method of a modeling of stray magnetic couplings in EMC filters By Takashi MASUZAWA, Eckart HOENE	[View] [Download]
Abstract: Electromagnetic Compatibility (EMC) filters for power electronic devices are strongly influenced by magnetic couplings between all components in the system. Therefore, several methods were proposed to predict these influences. Although a precise simulation can be realized utilizing the past methods, it is not practical to consider the all existing couplings especially for a development process in industry due to its high complexity and required empirical knowledge. This paper proposes a simplification method that identifies the most significant influences and reduces an investigative effort remarkably.

	Analysis and Optimization of Module Integrated MPPT Converter Based Residential PV System By Feng WANG, Pengju KONG, Fred C. LEE, Fang ZHUO	[View] [Download]
Abstract: This paper addresses the power loss issue results from mismatch case which is critical to improving overall efficiency of the residential PV system. In general, a dedicated DC-DC converter with an extra distributed MPPT (Max Power Point Tracking) algorithm, what is called a MIMC (Module Integrated MPPT Converter), is connected to each panel to reduce the mismatch impact. However, even by adopting the MIMCs, it is not always possible to guarantee all the panels working at their MPP operation points. In this paper, the characteristic of the MIMC based residential PV system is analyzed firstly. After that, the criteria for ensuring that all the MIMCs working on their MPPs are also derived. Then, an optimized MIMC system configuration is proposed to allow all the PV panels to work on its individual MPP (Max Power Point) regardless of the mismatch case. Finally, the simulation and experimental results validated the proposed system structure.

	Concept and design of hybrid interleaved and isolated micro-converter for low power applications By Zijian XIAO, Lyubomir KERACHEV, Marc COUSINEAU, Jean-Christophe CREBIER, Emmanuel SARRAUTE, Yves LEMBEYE, Thierry MEYNARD	[View] [Download]
Abstract: In this paper, a hybrid interleaved and isolated micro-converter (5V/2A/1MHz) dedicated to low power conversion is presented. Its structure allows the implementation of planar coupler with highly reduced dimensions. The control module and the power module of micro-converter are integrated in two chips respectively in order to illustrate the system integrability and to reduce the complexity of the micro-converter.

	Control of Grid-Connected Power Converters Based on Virtual Admittance and Active Power Synchronization By Pedro RODRIGUEZ, Ignacio CANDELA, Costantino CITRO, Catalin GAVRILUTA, Joan ROCABERT, Alvaro LUNA	[View] [Download]
Abstract: The connection of electronic power converters to the electrical network is increasing mainly due to massive integration of renewable energy systems. However, the electrical dynamic performance of these converters does not match the behavior of the network, which is mainly formed by generation facilities based on big synchronous generation systems. Depending on the desired electrical operation mode different control structures can be implemented in the converters in order to get adapted with the grid conditions. However, changing between different control structures and operation is not an optimal solution, as the resulting system results complex and is not highly robust. As an alternative, this paper presents a new control technique for grid connected power converters based on the concept of virtual admittance. The proposed control permits to emulate the electrical performance of generation facilities based on classical synchronous generators with a power converter, with no need of implementing different control structures, giving rise to a system that provides a friendly and robust operation with the network.

	Extended Methodology to Synthesize High Step-up Integrated DC-DC Converters By Antonio Manuel ANDRADE, Luciano SCHUCH, Jacson DREHER, Mario Lucio SILVA MARTINS, Rafael BELTRAME	[View] [Download]
Abstract: This paper proposes an extended methodology to generate high step-up DC/DC converters. The methodology is based on integration of the common circuits of the standard non-isolated DC/DC converters and association of the converters output sections. For the integration of two non-isolated converters, the output sections are series connected, meanwhile parallel and cascaded connection are only possible for the integration of one isolated converter with a non-isolated one. Further simulation and experimental analyses are carried out for the Integrated boost-Zeta and Integrated boost-flyback converters.

	Frequency Domain Prediction of Conducted EMI in Power Converters with front-end Three-phase Diode-bridge By Junsheng WEI, Dieter GERLING, Marek GALEK	[View] [Download]
Abstract: This paper investigates the frequency domain prediction of conducted EMI within power converters supplied by front-end three-phase diode-bridge. Noise source, noise propagation path and noise receiver are identified. Difficulty due to the presence of diode-bridge is analyzed and a method is proposed and verified by measurement to take the variation of propagation path into account while still enable the simulation to be carried out in frequency domain.

	Hybrid Time-Frequency EMI Noise Sources Modeling Method By Clement MARLIER, Arnaud VIDET, Nadir IDIR, Houmam MOUSSA, Regis MEURET	[View] [Download]
Abstract: The electrical power aboard aircraft tends to increase thanks to the progress in switched-mode power converters. The generalization of the use of power converters leads to EMI issues. The EMC standards compliance is often obtained by adding an EMI filter after a measurement on a prototype. Since prototyping is costly and time consuming, it is interesting to evaluate the level of EMI without prototyping. To achieve this goal, frequency-domain simulation is interesting, but classical method can not give a good representation of non-linear transition of the power switches. That is why a new frequency domain method is proposed. This method uses two equivalent generators topologies and combine them to obtain an accurate results. The combination is based on the use of validity functions associated with each topology. This paper is focused on the impact of the validity functions on the final result.

	Implementation of High Speed Control Network with Fail-Safe Control and Communication Cable Redundancy in Modular Multilevel Converter By Chuen Ling TOH, Lars NORUM	[View] [Download]
Abstract: A simple and fast internal communication system (ring communication network) had been proposed to simplify the wiring system in complex multilevel converter, such as Modular Multilevel Converter (MMC). This paper will present a fail-safe control and communication system for a MMC. A fail-safe control is demanded to ensure MMC continue operating without interruption when a malfunction power switch is detected. On the other hand, if a section of the communication cable breaks, the data transfer will be interrupted. Hence, a communication cable redundancy protocol must be enhanced in a ring control interface to increase the reliability of the MMC.

	Improving the voltage profile of a medium voltage grid using distributed generation units By Georgios TSENGENES, Georgios ADAMIDIS, Athanasios KARLIS	[View] [Download]
Abstract: In this paper the impact of photovoltaic (PV) system connected to the medium voltage distribution gird using three-phase three-level inverter and step-up transformer will be investigated. The PV inverter is capable to control active and reactive power independently. The impact to the grid voltage profile of both active and reactive power regulation of the PV system will be examined. In order to simplify the control scheme and improve the performance of the converters the p-q theory has been chosen due to the ability to compensate the reactive power of the load. The proposed electric power system was investigated via simulation results during steady state and transient response. The analysis will be focused on the grid voltage profile improvement regarding of the of the inverter’s active and reactive power injection.

	Input impedance investigation of a DC-DC converter on a large frequency range: a novel analytical approach By Achour ALES, Genevieve FRANTZ, Jean-Luc SCHANEN, Djelloul MOUSSAOUI, James ROUDET	[View] [Download]
Abstract: This paper proposes to investigate the Differential Mode (DM) input impedance of a DC-DCconverter. This parameter is crucial for network analysis, in a wide frequency range, from very lowfrequency for network stability analysis up to several tens of MHz for EMC studies. Analyticalapproach based on signal processing theory is developed, validated by PSPICE simulations andexperimental measurements. The results are discussed in comparison with an "off-line" impedancemeasurement, the converter being disconnected from the DC source.

	Integrated Buck-Boost Converter with Matrix-POL Architecture By Ryota SHIBAHARA, Yoichi ISHIZUKA, Seiya ABE, Tamotsu NINOMIYA	[View] [Download]
Abstract: In this study, integrated buck-boost converter with the Matrix-POL power supply system is proposed.From the simulation results, the validity of the Matrix-POL is revealed. The results revealed that thefast response to the load current and the voltage change can be done with duty and parallel numbercontrol by the proposed system.

	Reducing of parasitic inductive couplings effects in EMI filters By Laurent TAYLOR, Wenhua TAN, Xavier MARGUERON, Nadir IDIR	[View] [Download]
Abstract: This paper presents a method to improve EMI filters performances, based on the optimization of the component layout. It's well known that the EMI filter insertion losses are highly degraded by the high frequency stray couplings between filter passive components. The latter can be reduced by acting on these components' placement. This paper proposes a method that allow to determine the components' positions for minimizing the parasitic coupling between them. Their placement is deduced from the study of current distributions and magnetic field induced by these components. This method examines more specifically the parasitic inductive couplings between inductors and capacitors. The choice of the placement that minimizes couplings in 3D is determined to achieve better performance. Some prototypes are realized and characterized to validate the proposed method. EMC/EMI, EMI filter, Passive component, Design