EPE Association: Pelincec 2005 - 20: Dialog II

Pelincec 2005 - 20: Dialog II - Hybrid Energy Systems
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 20: Dialog II - Hybrid Energy Systems

   [return to parent folder]

   Energy management strategy for automotive electric power system
By A. Del Pizzo, F. Esposito, V. Isastia, S. Meo [View]
[Download]

Abstract: The target of any energy management strategy is to prioritize real-time power requests from the loads and allocate power resources available from the generation and storage devices in an optimized manner in order to minimize fuel consumption and/or emissions. The paper deals with the application of the optimal control theory for the reduction of the fuel consumption in a conventional vehicle. The results show a reduction of 2% in fuel use. The strategy can be applied also for hybrid vehicles and also for minimizing both fuel consumption and emissions.

   High performance three-phase dc-to-dc resonant converter
By M. R. Ramteke, H. M. Suryawanshi, S. S. Tanavade, V. B. Borghate, M. M. Renge [View]
[Download]

Abstract: In this paper, a three-phase dc-dc converter using high frequency modified series-parallel resonant converter topology is proposed. A systematic design procedure for the converter is outlined and prototype converter of 2.5 KW rating is built-up using the design procedure. To evaluate the performance, the converter is simulated in PSIM. The simulation & experimental results are presented to show its performance under variable load condition. To regulate output voltage, variable frequency control using digital signal processor (DSP) is implemented. The proposed converter maintains zero-voltage switching for the complete range of load variation and requires a narrow variation in the switching frequency for its output voltage regulation. The converter has good part load efficiency and reduced device stresses.

   Artificial Neural Network (ANN) for Control and Energy management of hybrid sources: supercapacitors and batteries.
By J. N. Marie-Francoise, H. Gualous, A. Berthon [View]
[Download]

Abstract: This paper presents a simulation and experimental realization of 42V hybrid power source. The control and power management are realized by using Artificial Neural Network. For energy storage, a pack of supercapacitors is used in parallel with battery. For simulation, the mathematical models of battery, DC/DC converters and supercapacitors are developed using MATLAB/SIMULINK ® . An experimental power test bench has been designed. Simulation results and experimental ones are presented, compared and analysed.

   Internal Combustion Engine vehicle starting with supercapacitors
By H. Gualous, J. N. Marie-Francoise, R. Gallay, A. Berthon [View]
[Download]

Abstract: This paper deals with supercapacitor pack thermal and electrical modelling and characterization. This pack is used to start an Internal Combustion Engine vehicle (ICE). This approach presents the advantage of reducing the CO2 emission and other pollutants from ICE vehicles.

   Implementation of a DSP Controlled Four-Leg Voltage Source Inverter for a Hybrid Power System
By Octavian Curea, Ionel Vechiu, Haritza Camblong, Brayima Dakyo [View]
[Download]

Abstract: In this paper the implementation of a voltage source inverter is presented. It is a part of a small-scale test bench for a 70 kW hybrid power system. Simulink blocks with models corresponding to all the system modules have been developed. Control laws have been implemented to ensure the optimal power retrieval, the system stability and the output power quality. At the beginning, the test bench will be used to validate the models and the control strategies. Thereafter it will be used for the hybrid power system behaviors analysis. The three-phase hybrid power system output is realized with a four-leg voltage source inverter drive by a DSP board. A special procedure is implemented to ensure the elimination of the unbalanced loads effects.

   Current assessment of primary energy source degradation
By Konrad Skowronek, Piotr Szymkowiak [View]
[Download]

Abstract: The paper contains an example of using a non-linear modeling of internal impedance of a NiMH cell for forecasting its life-time. The paper also includes a review of the solutions used till now, together with critical assessment of the proposed methodology. The verification has been carried out based on definite measurements of a set of batteries of equal type and degree of wear.

   NiMH battery modeling for hybrid electric vehicle application
By Chang Yuhua, Piotr Piórkowski, Ewa Jankowska [View]
[Download]

Abstract: This paper presents the approach based on prof. Antoni Szumanowski method of determining electromotive force (EMF) and battery internal resistance as a function of state of charge (SOC). The model is based on the discharge characteristics under different constant discharge current tested by experiment in CLAiO. The accuracy of the model in battery operating range for HEV application is higher than 97% (lacking 3% is a difference between experimental and computed values)

   Analysis of selected parameters of photovoltaic modules under random operation conditions with regard to the effect of instantaneous disturbances
By K. Skowronek, G. Trzmiel [View]
[Download]

Abstract: The paper presents the results of the consideration regarding influence of variable operation conditions on diagnosing the condition of a photovoltaic module. The reasons of the need of diagnosing under laboratory conditions are given. Additionally, the need of distinguishing a difference between a temporary disturbance and a permanent defect of a part of the module surface is analyzed, making use of a dynamical method of assessment of residues. In order to take into account a random change in utilized operating surface of the module the standard equivalent photovoltaic module was properly modified.

   THE METHANOL FUEL CELL SYSTEM
By Janusz T. Ciesliñski, Bartlomiej Kras, Piotr Biczel, Tomasz Dzik, Michal Przybyszewski, Maciej Kwiatkowski, Pawel Irzmañski [View]
[Download]

Abstract: The design of the fuel cell system supplied both by the hydrogen and methanol is described in this paper. The using of the methanol as a fuel is a consequence of the next stage of commercializing the fuel cells. Methanol is liquid comparable to hydrogen, which can be easier and more safe stored. Therefore it makes the fuel cell systems more useful to the potential users.

   Direct Power Control of Three-Level PWM Converter Connecting PMSG with Grid
By Mariusz Malinowski [View]
[Download]

Abstract: This paper proposes a simple direct power control using space vector modulation (DPC-SVM) for three-phase threelevel neutral point clamped (3L-NPC) PWM converter connecting a permanent magnet synchronous generator (PMSG) with grid. The active and reactive powers are used as the control variables instead of the currents applied in conventional control method. Moreover, grid voltage sensors are replaced by a virtual flux (VF) and filter-capacitor voltage estimators. The theoretical principles of this method as well as active damping (AD) solution are discussed. It is shown that the proposed method exhibits several features as: simple and robust algorithm as well as simple tuning procedure of AD. Furthermore the paper presents a LCL-filter, which fulfils IEEE-SCR 20-50 recommendation. Simulation results have proven an excellent performance and verified the validity of the proposed system.

   Energy flow control system based on neural compensator in the feedback path for autonomous energy source
By Lech M. Grzesiak, Jakub Sobolewski [View]
[Download]

Abstract: In this paper an artificial neural network, which realizes a nonlinear adaptive control algorithm, has been applied in a control system of variable speed generating system. The speed is adjusted automatically as a function of load power demand. The controller employs a single layer neural network to estimate the unknown plant nonlinearities online. Optimization of the controller is difficult because the plant is nonlinear and no stationary. Furthermore it deals with the situation where the plant becomes uncontrollable without any restrictive assumptions. In contrast to previous work [1] on the same subject, the number of neural networks has been reduced to only one network. The number of the neurons in a network structure as well as choosing certain design parameters was specified a priori. The computer test results have been presented to show performance of proposed neural controller.

   New High-Speed CPU Modules and Versatile Micromodules for Power Electronics and Motion Control Applications
By Leszek Debowski [View]
[Download]

Abstract: A flexible architecture of advanced digital control system (DLH) is presented. The system is designed for controlling power electronic converters of various, even very complex architectures requiring real-time processing of sophisticated control algorithms. The idea is based on advanced integrated circuits dedicated for signal processing: digital signal processors (DSP) and programmable logic devices (CPLD/FPGA). The paper summarizes basic features of high-performance DSPs. New designs of high-speed CPU modules equipped with the latest DSPs and CPLDs/FPGAs are described in details. A novel architecture of ìDLH micromodules family is introduced. The ìDLH micromodules are deditcated for the basic DLH flexible control system support, for simple autonomous applications and educational purposes. The most important features of DSP controllers are summarized and ìDLH micromodules are discussed. Selected application examples of DLH system and future designs are presented.

   Problems of active compensation of shock currents in IT type networks.
By Lech Dorobczynski [View]
[Download]

Abstract: In then paper were discussed selected problems of active compensation of capacity currents. Some laboratory results concerning to identification of grounded phase wire were presented.

   DC VOLTAGE HYBRID GENERATION SYSTEMS
By Piotr Biczel, Jozef Paska [View]
[Download]

Abstract: One of the EU energy policy goals is development of utilization of renewable and small local power sources. Local balancing of power production and consumption is aimed due to power transmission loses minimization. In other words all energy consumed in separated small area (cottage, town and commune) should be produced within this area. Research it has been done so far shows that it is very hard, in particular using unstable renewable power based on solar and wind energy, to reach the aim with keeping very high quality factors, high efficiency and low costs. Renewables like solar and sun energy have many disadvantages. To avoid these disadvantages sources are connected together into hybrid systems. The hybrid systems can be realized as AC or DC current. An idea of DC current solution is presented in the paper. In authors opinion such system using power electronics converters and advanced control systems allows easier effective connection of different power sources as AC current. In particular there are no problems like reactive power control, voltage and current distortion, reactive loses etc.

   The Flywheel Energy Storage with Brushless DC Motor.
By Stanislaw Piróg, Tomasz Siostrzonek, Adam Penczek [View]
[Download]

Abstract: This paper presents the first results of research of the rotating energy accumulator. In the study the brushless DC mo-tor with permanent magnet (PN=2,98kW) was used as the motor-generator . The rotating mass made up the steel pipe. This accu-mulator stored about 5MJ energy, which was a kinetic energy. The rotation speed was 6000 rpm.

Pelincec 2005 - 20: Dialog II - Hybrid Energy Systems
You are here: EPE Documents > 05 - EPE Supported Conference Proceedings > Pelincec 2005 > Pelincec 2005 - 20: Dialog II - Hybrid Energy Systems
	[return to parent folder]

	Energy management strategy for automotive electric power system By A. Del Pizzo, F. Esposito, V. Isastia, S. Meo	[View] [Download]
Abstract: The target of any energy management strategy is to prioritize real-time power requests from the loads and allocate power resources available from the generation and storage devices in an optimized manner in order to minimize fuel consumption and/or emissions. The paper deals with the application of the optimal control theory for the reduction of the fuel consumption in a conventional vehicle. The results show a reduction of 2% in fuel use. The strategy can be applied also for hybrid vehicles and also for minimizing both fuel consumption and emissions.

	High performance three-phase dc-to-dc resonant converter By M. R. Ramteke, H. M. Suryawanshi, S. S. Tanavade, V. B. Borghate, M. M. Renge	[View] [Download]
Abstract: In this paper, a three-phase dc-dc converter using high frequency modified series-parallel resonant converter topology is proposed. A systematic design procedure for the converter is outlined and prototype converter of 2.5 KW rating is built-up using the design procedure. To evaluate the performance, the converter is simulated in PSIM. The simulation & experimental results are presented to show its performance under variable load condition. To regulate output voltage, variable frequency control using digital signal processor (DSP) is implemented. The proposed converter maintains zero-voltage switching for the complete range of load variation and requires a narrow variation in the switching frequency for its output voltage regulation. The converter has good part load efficiency and reduced device stresses.

	Artificial Neural Network (ANN) for Control and Energy management of hybrid sources: supercapacitors and batteries. By J. N. Marie-Francoise, H. Gualous, A. Berthon	[View] [Download]
Abstract: This paper presents a simulation and experimental realization of 42V hybrid power source. The control and power management are realized by using Artificial Neural Network. For energy storage, a pack of supercapacitors is used in parallel with battery. For simulation, the mathematical models of battery, DC/DC converters and supercapacitors are developed using MATLAB/SIMULINK ® . An experimental power test bench has been designed. Simulation results and experimental ones are presented, compared and analysed.

	Internal Combustion Engine vehicle starting with supercapacitors By H. Gualous, J. N. Marie-Francoise, R. Gallay, A. Berthon	[View] [Download]
Abstract: This paper deals with supercapacitor pack thermal and electrical modelling and characterization. This pack is used to start an Internal Combustion Engine vehicle (ICE). This approach presents the advantage of reducing the CO2 emission and other pollutants from ICE vehicles.

	Implementation of a DSP Controlled Four-Leg Voltage Source Inverter for a Hybrid Power System By Octavian Curea, Ionel Vechiu, Haritza Camblong, Brayima Dakyo	[View] [Download]
Abstract: In this paper the implementation of a voltage source inverter is presented. It is a part of a small-scale test bench for a 70 kW hybrid power system. Simulink blocks with models corresponding to all the system modules have been developed. Control laws have been implemented to ensure the optimal power retrieval, the system stability and the output power quality. At the beginning, the test bench will be used to validate the models and the control strategies. Thereafter it will be used for the hybrid power system behaviors analysis. The three-phase hybrid power system output is realized with a four-leg voltage source inverter drive by a DSP board. A special procedure is implemented to ensure the elimination of the unbalanced loads effects.

	Current assessment of primary energy source degradation By Konrad Skowronek, Piotr Szymkowiak	[View] [Download]
Abstract: The paper contains an example of using a non-linear modeling of internal impedance of a NiMH cell for forecasting its life-time. The paper also includes a review of the solutions used till now, together with critical assessment of the proposed methodology. The verification has been carried out based on definite measurements of a set of batteries of equal type and degree of wear.

	NiMH battery modeling for hybrid electric vehicle application By Chang Yuhua, Piotr Piórkowski, Ewa Jankowska	[View] [Download]
Abstract: This paper presents the approach based on prof. Antoni Szumanowski method of determining electromotive force (EMF) and battery internal resistance as a function of state of charge (SOC). The model is based on the discharge characteristics under different constant discharge current tested by experiment in CLAiO. The accuracy of the model in battery operating range for HEV application is higher than 97% (lacking 3% is a difference between experimental and computed values)

	Analysis of selected parameters of photovoltaic modules under random operation conditions with regard to the effect of instantaneous disturbances By K. Skowronek, G. Trzmiel	[View] [Download]
Abstract: The paper presents the results of the consideration regarding influence of variable operation conditions on diagnosing the condition of a photovoltaic module. The reasons of the need of diagnosing under laboratory conditions are given. Additionally, the need of distinguishing a difference between a temporary disturbance and a permanent defect of a part of the module surface is analyzed, making use of a dynamical method of assessment of residues. In order to take into account a random change in utilized operating surface of the module the standard equivalent photovoltaic module was properly modified.

	THE METHANOL FUEL CELL SYSTEM By Janusz T. Ciesliñski, Bartlomiej Kras, Piotr Biczel, Tomasz Dzik, Michal Przybyszewski, Maciej Kwiatkowski, Pawel Irzmañski	[View] [Download]
Abstract: The design of the fuel cell system supplied both by the hydrogen and methanol is described in this paper. The using of the methanol as a fuel is a consequence of the next stage of commercializing the fuel cells. Methanol is liquid comparable to hydrogen, which can be easier and more safe stored. Therefore it makes the fuel cell systems more useful to the potential users.

	Direct Power Control of Three-Level PWM Converter Connecting PMSG with Grid By Mariusz Malinowski	[View] [Download]
Abstract: This paper proposes a simple direct power control using space vector modulation (DPC-SVM) for three-phase threelevel neutral point clamped (3L-NPC) PWM converter connecting a permanent magnet synchronous generator (PMSG) with grid. The active and reactive powers are used as the control variables instead of the currents applied in conventional control method. Moreover, grid voltage sensors are replaced by a virtual flux (VF) and filter-capacitor voltage estimators. The theoretical principles of this method as well as active damping (AD) solution are discussed. It is shown that the proposed method exhibits several features as: simple and robust algorithm as well as simple tuning procedure of AD. Furthermore the paper presents a LCL-filter, which fulfils IEEE-SCR 20-50 recommendation. Simulation results have proven an excellent performance and verified the validity of the proposed system.

	Energy flow control system based on neural compensator in the feedback path for autonomous energy source By Lech M. Grzesiak, Jakub Sobolewski	[View] [Download]
Abstract: In this paper an artificial neural network, which realizes a nonlinear adaptive control algorithm, has been applied in a control system of variable speed generating system. The speed is adjusted automatically as a function of load power demand. The controller employs a single layer neural network to estimate the unknown plant nonlinearities online. Optimization of the controller is difficult because the plant is nonlinear and no stationary. Furthermore it deals with the situation where the plant becomes uncontrollable without any restrictive assumptions. In contrast to previous work [1] on the same subject, the number of neural networks has been reduced to only one network. The number of the neurons in a network structure as well as choosing certain design parameters was specified a priori. The computer test results have been presented to show performance of proposed neural controller.

	New High-Speed CPU Modules and Versatile Micromodules for Power Electronics and Motion Control Applications By Leszek Debowski	[View] [Download]
Abstract: A flexible architecture of advanced digital control system (DLH) is presented. The system is designed for controlling power electronic converters of various, even very complex architectures requiring real-time processing of sophisticated control algorithms. The idea is based on advanced integrated circuits dedicated for signal processing: digital signal processors (DSP) and programmable logic devices (CPLD/FPGA). The paper summarizes basic features of high-performance DSPs. New designs of high-speed CPU modules equipped with the latest DSPs and CPLDs/FPGAs are described in details. A novel architecture of ìDLH micromodules family is introduced. The ìDLH micromodules are deditcated for the basic DLH flexible control system support, for simple autonomous applications and educational purposes. The most important features of DSP controllers are summarized and ìDLH micromodules are discussed. Selected application examples of DLH system and future designs are presented.

	Problems of active compensation of shock currents in IT type networks. By Lech Dorobczynski	[View] [Download]
Abstract: In then paper were discussed selected problems of active compensation of capacity currents. Some laboratory results concerning to identification of grounded phase wire were presented.

	DC VOLTAGE HYBRID GENERATION SYSTEMS By Piotr Biczel, Jozef Paska	[View] [Download]
Abstract: One of the EU energy policy goals is development of utilization of renewable and small local power sources. Local balancing of power production and consumption is aimed due to power transmission loses minimization. In other words all energy consumed in separated small area (cottage, town and commune) should be produced within this area. Research it has been done so far shows that it is very hard, in particular using unstable renewable power based on solar and wind energy, to reach the aim with keeping very high quality factors, high efficiency and low costs. Renewables like solar and sun energy have many disadvantages. To avoid these disadvantages sources are connected together into hybrid systems. The hybrid systems can be realized as AC or DC current. An idea of DC current solution is presented in the paper. In authors opinion such system using power electronics converters and advanced control systems allows easier effective connection of different power sources as AC current. In particular there are no problems like reactive power control, voltage and current distortion, reactive loses etc.

	The Flywheel Energy Storage with Brushless DC Motor. By Stanislaw Piróg, Tomasz Siostrzonek, Adam Penczek	[View] [Download]
Abstract: This paper presents the first results of research of the rotating energy accumulator. In the study the brushless DC mo-tor with permanent magnet (PN=2,98kW) was used as the motor-generator . The rotating mass made up the steel pipe. This accu-mulator stored about 5MJ energy, which was a kinetic energy. The rotation speed was 6000 rpm.