EPE Association: EPE 2013 - DS3j: Electric Traction and Ship Propulsion

EPE 2013 - DS3j: Electric Traction and Ship Propulsion
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 19: Electrical systems in aerospace, space, surface and marine transport (not road) > EPE 2013 - DS3j: Electric Traction and Ship Propulsion

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   A new high power transformer-less voltage source converter proven on a marine electric propulsion
By Emmanuel LELEU [View]
[Download]

Abstract: This paper deals with a transformer-less Variable Speed Drive based on High Power Medium Voltage PWM Voltage Source Converters connected to a distribution network without transformer. This technology represents the new generation of high efficient and compact power conversion solution. The transformer-less “architecture” of this variable speed drive was proposed thanks to a global system study combining several domains (power electronic, control, magnetic component design & circuit topology) and was applied to the diffential mode circuit study as well as the common mode circuit study. We detail the main key-point of the transformer-less solution, but above all, thanks to a complete qualification campaign on a real propulsion system, we improve our theoretical models and our assumptions to the measurements in order to validate our transformer-less solution. We describe the main concordances and explain the differences.

   Control System for Doubly Fed Induction Machine in Electrical Naval Propulsion
By Mustapha DEBBOU, Jules GILLET, Tahar ACHOUR, Maria PIETRZAK-DAVID [View]
[Download]

Abstract: This paper deals with the use of the Doubly Fed Induction Machine (DFIM) in Electrical Naval Propulsion. The advantages of the proposed architecture are described and exploited in order to guarantee more power efficiency of this propulsion system. The two control strategies are: the Dual Stator Field Oriented Control (SFOC) and Dual Direct Torque Control. The load torque propeller model is developed and the Saber simulation results of all system are presented and discussed. The methodology called “pseudo experimentation” is used to validate the performances of the system.

   Modelling and Simulation of Hybrid Electric Ships with DC Distribution Systems
By Bijan ZAHEDI, Lars NORUM [View]
[Download]

Abstract: DC power system in ship applications is an emerging technology, which provides new opportunities for reducing fuel consumption and emission. However, the resulted power electronic-based system on board the ship requires effective analysis tools to facilitate a full-realization of the advantages. This paper reviews the modelling of hybrid electric ship components including mechanical and electrical elements. Power electronic converters are modeled by nonlinear averaging methods to suit system-level studies. A unified model for bidirectional converters is proposed to avoid transitions between two separate models. A simulation platform using the derived models is developed for system-level analysis of hybrid electric ships. Simulation results of a hybrid electric ship with two diesel generators, a fuel cell, and an energy storage module are presented for different modes of operation.

   Renewable energy systems for racing sailboats- from simulations to an experimental device
By Sebastien WASTERLAIN, Philippe BARRADE, Alfred RUFER [View]
[Download]

Abstract: Providing racing sailboats with renewable energy sources deals with boat performances, reliability and skipper’s security. In this study, an innovative solution is presented to feed a sailboat with green energy by using a hydro-generator. This paper also interests on energetic efficiency and presents the close relationship with control strategy. A new control strategy for HG is proposed and experimentally validated.

   Study on a Control Method of the Power Converter for Constant Power Transmission by Single-pulse PWM mode.
By Satoshi KITAZAWA, Keiichiro KONDO, Takayuki KASHIWAGI [View]
[Download]

Abstract: In the case of contactless power transfer system with the electromagnetic induction, the coupling coefficient between the coils is reduced by the misalignment of the receiving coils. This results in reduction of the output voltage and the active power in the coils. To cope with this problem, an instantaneous current control method is applied to the PWM rectifier of a single-phase contactless power transformer system. The switching loss increases due to higher operating frequency. In this paper, PWM rectifier with the control method is operated with single-pulse PWM mode to reduce the switching losses. It is revealed by experimental tests over a power range of several tens of watts that the proposed control method is effective even if the PWM rectifier is operated with single-pulse mode.

   Vector Control of Fixed Joint Double Fifteen-Phase Induction Motors System With Propeller Load
By Zicheng LIU, Zedong ZHENG, Ling PENG, Yongdong LI [View]
[Download]

Abstract: Two fifteen-phase induction motors fixed on a single shaft is used in a ship propulsion system, and drive system of fixed joint motors with propeller load is studied in this paper. Fifteen-phase induction motor and propeller load are analyzed and modeled. Vector control system is designed, which can regulate the power allocation between two motors. Two working conditions of the ship are studied, and simulation results demonstrate that the two motors can work at equal or proportioned power respectively in four quadrants.

   Voltage Regulation and Power Sharing Control in Ship LVDC Power Distribution Systems
By Bijan ZAHEDI, Lars NORUM [View]
[Download]

Abstract: DC distribution systems are emerging in ship applications in order to facilitate fuel saving and low emission. As opposed to the conventional shipboard ac power systems, in a ship dc power system, the generators can rotate independently. This makes the voltage regulation and power sharing to be implemented differently. This paper presents dc voltage control in a shipboard dc power system, while the power sharing between the sources are also controlled.

EPE 2013 - DS3j: Electric Traction and Ship Propulsion
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2013 ECCE Europe - Conference > EPE 2013 - Topic 19: Electrical systems in aerospace, space, surface and marine transport (not road) > EPE 2013 - DS3j: Electric Traction and Ship Propulsion
	[return to parent folder]

	A new high power transformer-less voltage source converter proven on a marine electric propulsion By Emmanuel LELEU	[View] [Download]
Abstract: This paper deals with a transformer-less Variable Speed Drive based on High Power Medium Voltage PWM Voltage Source Converters connected to a distribution network without transformer. This technology represents the new generation of high efficient and compact power conversion solution. The transformer-less “architecture” of this variable speed drive was proposed thanks to a global system study combining several domains (power electronic, control, magnetic component design & circuit topology) and was applied to the diffential mode circuit study as well as the common mode circuit study. We detail the main key-point of the transformer-less solution, but above all, thanks to a complete qualification campaign on a real propulsion system, we improve our theoretical models and our assumptions to the measurements in order to validate our transformer-less solution. We describe the main concordances and explain the differences.

	Control System for Doubly Fed Induction Machine in Electrical Naval Propulsion By Mustapha DEBBOU, Jules GILLET, Tahar ACHOUR, Maria PIETRZAK-DAVID	[View] [Download]
Abstract: This paper deals with the use of the Doubly Fed Induction Machine (DFIM) in Electrical Naval Propulsion. The advantages of the proposed architecture are described and exploited in order to guarantee more power efficiency of this propulsion system. The two control strategies are: the Dual Stator Field Oriented Control (SFOC) and Dual Direct Torque Control. The load torque propeller model is developed and the Saber simulation results of all system are presented and discussed. The methodology called “pseudo experimentation” is used to validate the performances of the system.

	Modelling and Simulation of Hybrid Electric Ships with DC Distribution Systems By Bijan ZAHEDI, Lars NORUM	[View] [Download]
Abstract: DC power system in ship applications is an emerging technology, which provides new opportunities for reducing fuel consumption and emission. However, the resulted power electronic-based system on board the ship requires effective analysis tools to facilitate a full-realization of the advantages. This paper reviews the modelling of hybrid electric ship components including mechanical and electrical elements. Power electronic converters are modeled by nonlinear averaging methods to suit system-level studies. A unified model for bidirectional converters is proposed to avoid transitions between two separate models. A simulation platform using the derived models is developed for system-level analysis of hybrid electric ships. Simulation results of a hybrid electric ship with two diesel generators, a fuel cell, and an energy storage module are presented for different modes of operation.

	Renewable energy systems for racing sailboats- from simulations to an experimental device By Sebastien WASTERLAIN, Philippe BARRADE, Alfred RUFER	[View] [Download]
Abstract: Providing racing sailboats with renewable energy sources deals with boat performances, reliability and skipper’s security. In this study, an innovative solution is presented to feed a sailboat with green energy by using a hydro-generator. This paper also interests on energetic efficiency and presents the close relationship with control strategy. A new control strategy for HG is proposed and experimentally validated.

	Study on a Control Method of the Power Converter for Constant Power Transmission by Single-pulse PWM mode. By Satoshi KITAZAWA, Keiichiro KONDO, Takayuki KASHIWAGI	[View] [Download]
Abstract: In the case of contactless power transfer system with the electromagnetic induction, the coupling coefficient between the coils is reduced by the misalignment of the receiving coils. This results in reduction of the output voltage and the active power in the coils. To cope with this problem, an instantaneous current control method is applied to the PWM rectifier of a single-phase contactless power transformer system. The switching loss increases due to higher operating frequency. In this paper, PWM rectifier with the control method is operated with single-pulse PWM mode to reduce the switching losses. It is revealed by experimental tests over a power range of several tens of watts that the proposed control method is effective even if the PWM rectifier is operated with single-pulse mode.

	Vector Control of Fixed Joint Double Fifteen-Phase Induction Motors System With Propeller Load By Zicheng LIU, Zedong ZHENG, Ling PENG, Yongdong LI	[View] [Download]
Abstract: Two fifteen-phase induction motors fixed on a single shaft is used in a ship propulsion system, and drive system of fixed joint motors with propeller load is studied in this paper. Fifteen-phase induction motor and propeller load are analyzed and modeled. Vector control system is designed, which can regulate the power allocation between two motors. Two working conditions of the ship are studied, and simulation results demonstrate that the two motors can work at equal or proportioned power respectively in four quadrants.

	Voltage Regulation and Power Sharing Control in Ship LVDC Power Distribution Systems By Bijan ZAHEDI, Lars NORUM	[View] [Download]
Abstract: DC distribution systems are emerging in ship applications in order to facilitate fuel saving and low emission. As opposed to the conventional shipboard ac power systems, in a ship dc power system, the generators can rotate independently. This makes the voltage regulation and power sharing to be implemented differently. This paper presents dc voltage control in a shipboard dc power system, while the power sharing between the sources are also controlled.