EPE Association: EPE 2005 - Topic 14-3: Variable speed generators

EPE 2005 - Topic 14-3: Variable speed generators
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 14: POWER ELECTRONICS IN ELECTRICAL ENERGY GENERATING SYSTEMS > EPE 2005 - Topic 14-3: Variable speed generators

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   Analysis of a 300 MW Variable Speed Drive for Pump-Storage Plant Applications
By BOCQUEL AureLie; JANNING JoeRg [View]
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Abstract: A 300 MW drive system consisting of a cyclo-converter driven doubly-fed induction machine for pump-storage stations operating in Goldisthal, Germany, is presented. The cyclo-converter supplied by ALSTOM is one of the largest in the world. Major benefits of this innovative concept are the increase of the turbine efficiency by means of speed variation and the high dynamic power control for the stabilisation of the grid. Major benefits compared to classical approaches are identified. Emphasis is placed on the behaviour of the drive at grid failures. A new modified topology is proposed to meet the grid code requirements at various grid failures.

   Polyphased Modular Direct-Drive Wind Turbine Generator
By BRISSET StePhane; LALOY Daniel; KESTELYN Xavier; VIZIREANU Darius; MILET Yves; BROCHET Pascal [View]
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Abstract: The goal of the paper is to study the possibility of increasing the power capability of direct-drive PM wind generators with respect to the established quality criteria: electromagnetic torque and the power transferred to the grid. The studied solution is a polyphased system with a phase number multiple by 3, i.e. a multi-star system. The influence of the number of stars and their phase shift are investigated.

   Variable Speed Intergated Generator VSIG as Modern Controlled and Decoupled Generation System of Electrical Power
By A; KOCZARA Wlodzimierz [View]
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Abstract: The paper presents variable speed generation system producing standardised 400V/230V/50Hz voltage. An internal combustion engine (Diesel engine) is driving a permanent magnet axial flux generator. An AC/AC power electronic system converts variable frequency and amplitude the permanent magnet generator AC voltage to the standardised AC voltage. The axial flux generator is very short, light, shaftless and bearingless. The generator is integrated to the engine without any flywheel. Laboratory tests of 40kVA genset shows steady state and transient operation. There are cases related to stand alone (autonomous) and distorted voltage grid connection.

EPE 2005 - Topic 14-3: Variable speed generators
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2005 - Conference > EPE 2005 - Topic 14: POWER ELECTRONICS IN ELECTRICAL ENERGY GENERATING SYSTEMS > EPE 2005 - Topic 14-3: Variable speed generators
	[return to parent folder]

	Analysis of a 300 MW Variable Speed Drive for Pump-Storage Plant Applications By BOCQUEL AureLie; JANNING JoeRg	[View] [Download]
Abstract: A 300 MW drive system consisting of a cyclo-converter driven doubly-fed induction machine for pump-storage stations operating in Goldisthal, Germany, is presented. The cyclo-converter supplied by ALSTOM is one of the largest in the world. Major benefits of this innovative concept are the increase of the turbine efficiency by means of speed variation and the high dynamic power control for the stabilisation of the grid. Major benefits compared to classical approaches are identified. Emphasis is placed on the behaviour of the drive at grid failures. A new modified topology is proposed to meet the grid code requirements at various grid failures.

	Polyphased Modular Direct-Drive Wind Turbine Generator By BRISSET StePhane; LALOY Daniel; KESTELYN Xavier; VIZIREANU Darius; MILET Yves; BROCHET Pascal	[View] [Download]
Abstract: The goal of the paper is to study the possibility of increasing the power capability of direct-drive PM wind generators with respect to the established quality criteria: electromagnetic torque and the power transferred to the grid. The studied solution is a polyphased system with a phase number multiple by 3, i.e. a multi-star system. The influence of the number of stars and their phase shift are investigated.

	Variable Speed Intergated Generator VSIG as Modern Controlled and Decoupled Generation System of Electrical Power By A; KOCZARA Wlodzimierz	[View] [Download]
Abstract: The paper presents variable speed generation system producing standardised 400V/230V/50Hz voltage. An internal combustion engine (Diesel engine) is driving a permanent magnet axial flux generator. An AC/AC power electronic system converts variable frequency and amplitude the permanent magnet generator AC voltage to the standardised AC voltage. The axial flux generator is very short, light, shaftless and bearingless. The generator is integrated to the engine without any flywheel. Laboratory tests of 40kVA genset shows steady state and transient operation. There are cases related to stand alone (autonomous) and distorted voltage grid connection.