EPE Association: EPE 2014 - DS3j: Industry Specific Energy Conversion and Conditioning Technologies

EPE 2014 - DS3j: Industry Specific Energy Conversion and Conditioning Technologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2014 ECCE Europe - Conference > EPE 2014 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2014 - DS3j: Industry Specific Energy Conversion and Conditioning Technologies

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   Comparison of electric motor types for realising an energy efficient pumping system
By Tero AHONEN, Jussi TAMMINEN, Juho MONTONEN [View]
[Download]

Abstract: Energy efficiency in pumping is partially affected by the electric motor efficiency. In addition to low losses, the chosen electric motor type should have feasible reliability and dimensions for pumping systems. This paper studies the applicability of common electric motor types to a future pumping system by comparing motor characteristics with each other; both a qualitative and quantitative evaluation is performed for a 15 kW induction, synchronous reluctance and permanent magnet synchronous motor. Another main object of this paper is to provide basic information for designing a next generation, more energy efficient pumping system.

   Complete Solution of Full 4-level Flying Capacitor Converter for medium-voltage drives with Active Voltage Balancing Control with Phase Disposition PWM
By Dusan JANIK, Tomas KOSAN, Petr KAMENICKY, Vojtech BLAHNIK, Zdenek PEROUTKA, Michal DANEK [View]
[Download]

Abstract: This paper presents three-phase four-level FLC based electric motor drive for mining application supplieddirectly from a 6 kV ac-grid. It describes complete control algorithms of the drive with active voltage balancing control. The proposed control is verified by experiments carried out on down-scale drive prototype of rated power of 35 kVA.

   Modeling switched-linear power circuits using parametrized curves for real-time simulation
By Xinhua KE, Roxana IONUTIU [View]
[Download]

Abstract: A new method for modeling switched-linear systems is presented: switching devices are modeled ideally using parametrized curves, and an efficient implementation for real-time simulation is proposed. Experiments on a rectifier topology for traction converters demonstrate the methods performance in terms of accuracy, stability and execution time, with a 50us step-size.

   Power Converters Design and Analysis for High Power Piezoelectric Ultrasonic Transducers
By POOYA DAVARI, Negareh GHASEMI, Firuz ZARE [View]
[Download]

Abstract: High power piezoelectric ultrasonic transducers have been widely exploited in a variety ofapplications. The critical behaviour of a piezoelectric device is encapsulated in its resonant frequenciesbecause of its maximum transmission performance at these frequencies. Therefore power electronicconverters should be tuned at those resonant frequencies to transfer electrical power to mechanicalpower efficiently. However, structural and environmental changes cause variations in the deviceresonant frequencies which can degrade the system performance. Hence, estimating the deviceresonant frequencies within the incorporated setup can significantly improve the system performance.This paper proposes an efficient resonant frequency estimation approach to maintain the performanceof high power ultrasonic applications using the employed power converter. Experimental validationsindicate the effectiveness of the proposed method.

   Power electronics for a sulfur plasma lamp working by acoustic resonance : full scale prototype experimental results.
By Serge GAVIN, Mauro CARPITA, Gilles COURRET [View]
[Download]

Abstract: In this paper, the power electronics for a sulfur plasma lamp is presented. The plasma is obtained by heating the sulfur using microwaves generated by a magnetron. A custom high voltage (5 kV) power supply has been developed to supply the magnetron. To protect the bulb from melting, a suitable modulation technique has been implemented.

   Resonant Converter Based Modulator Control for Magnetron with Variable Load
By Nourdeen ABODHIR, Alan WATSON, Jon CLARE, Chao JI [View]
[Download]

Abstract: This paper presents an efficient compact resonant power supply and control methodology for highvoltage applications such as a magnetron modulator in an industrial microwave source. The paperconsiders the control of the converter in applications which have a variable load nature which cannegatively affect the efficiency of the power conversion.

   Sequence Impedance of Feeder in Different Configurations for Variable Frequency Power Systems
By Mengdi CAI, Ligang RUAN, Shanshui YANG, Li WANG [View]
[Download]

Abstract: The research on feeder sequence impedance can enhance power quality, reduce the weight of power system and improve the electromagnetic compatibility. In this paper, the sequence impedance with the airplane skin as neutral is analyzed in the large-capacity variable frequency power system. The skin factor and proximity factor which affect resistance, as well as inductance in different frequencies are compared. Finally, the sequence impedances in several typical configurations are contrasted, and some conclusions are obtained.

   Stochastic Tram Model Based on Real Traffic Data for Energy Storage System Designing
By Lubo STREIT, Jakub TALLA, Pavel DRABEK [View]
[Download]

Abstract: This paper describes the stochastic tram model development on a real traffic data. The trams traffic data are measured on the tram without energy storage system in Pilsen (Czech Republic). The model can reliable simulate power flow, line losses and energy storage system efficiency for trams with supercapacitors.

   Variable speed drive-based pressure optimization of a pumping system comprising individual branch flow control elements
By Jussi TAMMINEN, Tero AHONEN, Antti KOSONEN, Jero AHOLA, Jukka TOLVANEN [View]
[Download]

Abstract: Circulation pumping systems hold energy savings potential, which can be seized with intelligent control. In this paper, a novel variable speed drive based method for minimizing the required pump pressure of a pumping system that has individual branch flow control elements is introduced. The method can be used to save energy for example in central heating circulation applications. Moreover, the presented method is purely software-based and can be implemented using a variable speed drive. The operation of the method was verified with simulations and a laboratory test setup and compared with proportional pressure control.

   Variable speed genset with full rated power converter using readily available industrial products
By Thomas VAN MAERHEM, Bram ROTTHIER, Johan DRIESEN, Jan CAPPELLE [View]
[Download]

Abstract: Although a classic diesel genset may reach 35\% efficiency at nominal load, it has very poor efficiency at low load conditions. Still, these conditions often occur in real world applications when combining gensets with variable autonomous loads. Previously, the authors built a hybrid genset prototype achieving fuel consumption reductions of over 30\%. As an alternative to this hybrid genset, this paper reports on a variable speed genset prototype. To demonstrate a higher fuel efficiency, a prototype 50 kVA variable speed genset has been built using readily available industrial products. A diesel internal combustion engine supplies power to a PM synchronous generator to produce variable voltage, variable frequency AC. Using a four-quadrant variable-frequency drive and transformer this electrical energy is converted to produce an autonomous 4-wire 50 Hz 3x400 V grid. Operation principle, prototype implementation, first load tests (speed response and power quality) and possible improvements are discussed in this paper.

EPE 2014 - DS3j: Industry Specific Energy Conversion and Conditioning Technologies
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2014 ECCE Europe - Conference > EPE 2014 - Topic 09: Industry-Specific Energy Conversion and Conditioning Technologies > EPE 2014 - DS3j: Industry Specific Energy Conversion and Conditioning Technologies
	[return to parent folder]

	Comparison of electric motor types for realising an energy efficient pumping system By Tero AHONEN, Jussi TAMMINEN, Juho MONTONEN	[View] [Download]
Abstract: Energy efficiency in pumping is partially affected by the electric motor efficiency. In addition to low losses, the chosen electric motor type should have feasible reliability and dimensions for pumping systems. This paper studies the applicability of common electric motor types to a future pumping system by comparing motor characteristics with each other; both a qualitative and quantitative evaluation is performed for a 15 kW induction, synchronous reluctance and permanent magnet synchronous motor. Another main object of this paper is to provide basic information for designing a next generation, more energy efficient pumping system.

	Complete Solution of Full 4-level Flying Capacitor Converter for medium-voltage drives with Active Voltage Balancing Control with Phase Disposition PWM By Dusan JANIK, Tomas KOSAN, Petr KAMENICKY, Vojtech BLAHNIK, Zdenek PEROUTKA, Michal DANEK	[View] [Download]
Abstract: This paper presents three-phase four-level FLC based electric motor drive for mining application supplieddirectly from a 6 kV ac-grid. It describes complete control algorithms of the drive with active voltage balancing control. The proposed control is verified by experiments carried out on down-scale drive prototype of rated power of 35 kVA.

	Modeling switched-linear power circuits using parametrized curves for real-time simulation By Xinhua KE, Roxana IONUTIU	[View] [Download]
Abstract: A new method for modeling switched-linear systems is presented: switching devices are modeled ideally using parametrized curves, and an efficient implementation for real-time simulation is proposed. Experiments on a rectifier topology for traction converters demonstrate the methods performance in terms of accuracy, stability and execution time, with a 50us step-size.

	Power Converters Design and Analysis for High Power Piezoelectric Ultrasonic Transducers By POOYA DAVARI, Negareh GHASEMI, Firuz ZARE	[View] [Download]
Abstract: High power piezoelectric ultrasonic transducers have been widely exploited in a variety ofapplications. The critical behaviour of a piezoelectric device is encapsulated in its resonant frequenciesbecause of its maximum transmission performance at these frequencies. Therefore power electronicconverters should be tuned at those resonant frequencies to transfer electrical power to mechanicalpower efficiently. However, structural and environmental changes cause variations in the deviceresonant frequencies which can degrade the system performance. Hence, estimating the deviceresonant frequencies within the incorporated setup can significantly improve the system performance.This paper proposes an efficient resonant frequency estimation approach to maintain the performanceof high power ultrasonic applications using the employed power converter. Experimental validationsindicate the effectiveness of the proposed method.

	Power electronics for a sulfur plasma lamp working by acoustic resonance : full scale prototype experimental results. By Serge GAVIN, Mauro CARPITA, Gilles COURRET	[View] [Download]
Abstract: In this paper, the power electronics for a sulfur plasma lamp is presented. The plasma is obtained by heating the sulfur using microwaves generated by a magnetron. A custom high voltage (5 kV) power supply has been developed to supply the magnetron. To protect the bulb from melting, a suitable modulation technique has been implemented.

	Resonant Converter Based Modulator Control for Magnetron with Variable Load By Nourdeen ABODHIR, Alan WATSON, Jon CLARE, Chao JI	[View] [Download]
Abstract: This paper presents an efficient compact resonant power supply and control methodology for highvoltage applications such as a magnetron modulator in an industrial microwave source. The paperconsiders the control of the converter in applications which have a variable load nature which cannegatively affect the efficiency of the power conversion.

	Sequence Impedance of Feeder in Different Configurations for Variable Frequency Power Systems By Mengdi CAI, Ligang RUAN, Shanshui YANG, Li WANG	[View] [Download]
Abstract: The research on feeder sequence impedance can enhance power quality, reduce the weight of power system and improve the electromagnetic compatibility. In this paper, the sequence impedance with the airplane skin as neutral is analyzed in the large-capacity variable frequency power system. The skin factor and proximity factor which affect resistance, as well as inductance in different frequencies are compared. Finally, the sequence impedances in several typical configurations are contrasted, and some conclusions are obtained.

	Stochastic Tram Model Based on Real Traffic Data for Energy Storage System Designing By Lubo STREIT, Jakub TALLA, Pavel DRABEK	[View] [Download]
Abstract: This paper describes the stochastic tram model development on a real traffic data. The trams traffic data are measured on the tram without energy storage system in Pilsen (Czech Republic). The model can reliable simulate power flow, line losses and energy storage system efficiency for trams with supercapacitors.

	Variable speed drive-based pressure optimization of a pumping system comprising individual branch flow control elements By Jussi TAMMINEN, Tero AHONEN, Antti KOSONEN, Jero AHOLA, Jukka TOLVANEN	[View] [Download]
Abstract: Circulation pumping systems hold energy savings potential, which can be seized with intelligent control. In this paper, a novel variable speed drive based method for minimizing the required pump pressure of a pumping system that has individual branch flow control elements is introduced. The method can be used to save energy for example in central heating circulation applications. Moreover, the presented method is purely software-based and can be implemented using a variable speed drive. The operation of the method was verified with simulations and a laboratory test setup and compared with proportional pressure control.

	Variable speed genset with full rated power converter using readily available industrial products By Thomas VAN MAERHEM, Bram ROTTHIER, Johan DRIESEN, Jan CAPPELLE	[View] [Download]
Abstract: Although a classic diesel genset may reach 35\% efficiency at nominal load, it has very poor efficiency at low load conditions. Still, these conditions often occur in real world applications when combining gensets with variable autonomous loads. Previously, the authors built a hybrid genset prototype achieving fuel consumption reductions of over 30\%. As an alternative to this hybrid genset, this paper reports on a variable speed genset prototype. To demonstrate a higher fuel efficiency, a prototype 50 kVA variable speed genset has been built using readily available industrial products. A diesel internal combustion engine supplies power to a PM synchronous generator to produce variable voltage, variable frequency AC. Using a four-quadrant variable-frequency drive and transformer this electrical energy is converted to produce an autonomous 4-wire 50 Hz 3x400 V grid. Operation principle, prototype implementation, first load tests (speed response and power quality) and possible improvements are discussed in this paper.