EPE Association: EPE 2009 - Subtopic 14-3 - LS: 'Full Power Generator Drives'

EPE 2009 - Subtopic 14-3 - LS: 'Full Power Generator Drives'
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2009 - Conference > EPE 2009 - Topic 14: 'Electrical Energy Generating Systems, Renewable Energy Systems' > EPE 2009 - Subtopic 14-3 - LS: 'Full Power Generator Drives'

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   A modular direct-drive permanent magnet wind generator system eliminating the grid-side transformer
By xibo YUAN, yongdong LI, jianyun CHAI, MINZHENG MA [View]
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Abstract: This paper has presented a modular converter for multi-coil direct-drive permanent magnet wind generator system. The converter modules are connected in series to achieve medium voltage output, thus eliminating the grid-side step-up transformer. The generator coils with 90 degree phase shift are rectified through Power Factor Correction (PFC) circuit and connected in parallel to get unit power factor and stable dc-link power. The generator armature inductance is used as the AC-side PFC boost inductor, reducing the system size and cost. The required value of the inductor is derived based on the current ripple and zero-crossing distortion. The H-bridge inverters are cascaded to achieve multilevel voltage output and the vector control scheme is adopted to regulate the converter active and reactive power transferred to the grid. Simulation results with a 1.5MW wind system and experimental results with a scaled 3kW system validate the proposed topology and control method.

   Integrated Simulation of Doudly Fed Induction Generator Wind Turbine
By Montserrat MATA-DUMENJO, Javier SANCHEZ-NAVARRO, Michele ROSSETTI, Oriol GOMIS-BELLMUNT, AdriÃ JUNYENT-FERRE [View]
[Download]

Abstract: The present paper deals with the integration of electrical, control and mechanical models in a single platform to evaluate the response of wind turbines to different classes of voltages sags. Models of all the wind turbine parts are described and integrated in two different platforms. Mechanical and aerdynamics are modeled using GH Bladed while electrical and control parts are modeled using Matlab Simulink and later compiled and included into GH Bladed by means of a DLL. The integrated model has been simulated with different voltage sags and compared to real tests with the ECO-74 Alstom-Ecotecnia wind turbine.

   Next generation variable speed pump-storage power stations
By JÃ¶rg JANNING, Alexander SCHWERY [View]
[Download]

Abstract: The drive system of a variable speed pump-storage power station consisting of a doubly-fed induction machine with a 3-level voltage source inverter feeding the rotor is presented. The advantages of variable speed pump-storage power stations are outlined. After a short comparison with the classical cyclo-converter solution the voltage source inverter solution is described in detail covering various aspects like grid code requirements, protection, start-up and black start operation. The presented solution fulfils all requirements of a modern pump storage power station.

EPE 2009 - Subtopic 14-3 - LS: 'Full Power Generator Drives'
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2009 - Conference > EPE 2009 - Topic 14: 'Electrical Energy Generating Systems, Renewable Energy Systems' > EPE 2009 - Subtopic 14-3 - LS: 'Full Power Generator Drives'
	[return to parent folder]

	A modular direct-drive permanent magnet wind generator system eliminating the grid-side transformer By xibo YUAN, yongdong LI, jianyun CHAI, MINZHENG MA	[View] [Download]
Abstract: This paper has presented a modular converter for multi-coil direct-drive permanent magnet wind generator system. The converter modules are connected in series to achieve medium voltage output, thus eliminating the grid-side step-up transformer. The generator coils with 90 degree phase shift are rectified through Power Factor Correction (PFC) circuit and connected in parallel to get unit power factor and stable dc-link power. The generator armature inductance is used as the AC-side PFC boost inductor, reducing the system size and cost. The required value of the inductor is derived based on the current ripple and zero-crossing distortion. The H-bridge inverters are cascaded to achieve multilevel voltage output and the vector control scheme is adopted to regulate the converter active and reactive power transferred to the grid. Simulation results with a 1.5MW wind system and experimental results with a scaled 3kW system validate the proposed topology and control method.

	Integrated Simulation of Doudly Fed Induction Generator Wind Turbine By Montserrat MATA-DUMENJO, Javier SANCHEZ-NAVARRO, Michele ROSSETTI, Oriol GOMIS-BELLMUNT, AdriÃ JUNYENT-FERRE	[View] [Download]
Abstract: The present paper deals with the integration of electrical, control and mechanical models in a single platform to evaluate the response of wind turbines to different classes of voltages sags. Models of all the wind turbine parts are described and integrated in two different platforms. Mechanical and aerdynamics are modeled using GH Bladed while electrical and control parts are modeled using Matlab Simulink and later compiled and included into GH Bladed by means of a DLL. The integrated model has been simulated with different voltage sags and compared to real tests with the ECO-74 Alstom-Ecotecnia wind turbine.

	Next generation variable speed pump-storage power stations By JÃ¶rg JANNING, Alexander SCHWERY	[View] [Download]
Abstract: The drive system of a variable speed pump-storage power station consisting of a doubly-fed induction machine with a 3-level voltage source inverter feeding the rotor is presented. The advantages of variable speed pump-storage power stations are outlined. After a short comparison with the classical cyclo-converter solution the voltage source inverter solution is described in detail covering various aspects like grid code requirements, protection, start-up and black start operation. The presented solution fulfils all requirements of a modern pump storage power station.