Title:
REACTIVE POWER MANAGEMENT FOR WIND TURBINE APPLICATIONS
Document Type and Number:
WIPO Patent Application WO/2011/161692
Kind Code:
A3
Abstract:
The present invention provides pre-determined reactive power to asynchronous generator of a wind turbine, through a feedback controlled inverter by eliminating the usage of capacitor banks and is installable in remote places where grid (G) power is not available. A novel control system with 3 phase inverter setup using power transistors or IGBT's as switching elements provides reactive power for excitation to maintain sustained generation. Negative slip is controlled based on the reference DC voltage generated through the freewheeling diodes of the IGBT's. In grid (G) connected system, better efficiency is achieved by pumping reactive power from the 3 phase inverter in synchronization with power grid (G) line frequency. The system can also be used in non-grid (G) connected wind turbines to provide electrical power to local loads and in grid (G) connected systems the generated power from the Wind Turbine is exported fully/partially after usage for local loads.
Inventors:
RAGHUNATHAN V R (IN)
Application Number:
PCT/IN2011/000405
Publication Date:
June 21, 2012
Filing Date:
June 16, 2011
Export Citation:
Assignee:
RAGHUNATHAN V R (IN)
International Classes:
F03D9/00; H02J3/18
Foreign References:
| US20080001408A1 | 2008-01-03 | |||
| FR2753019A1 | 1998-03-06 |
Other References:
JAYARAMAIAH G V ET AL: "Novel Voltage Controller for Stand-alone Induction Generator using PWM-VSI", THE 2006 IEEE INDUSTRY APPLICATIONS CONFERENCE FORTY-FIRST IAS ANNUAL MEETING, CONFERENCE RECORD OF, IEEE, PISCATAWAY, NJ, US, 1 October 2006 (2006-10-01), pages 204 - 208, XP031026035, ISBN: 978-1-4244-0364-6, DOI: 10.1109/IAS.2006.256524
ZHENHUA JIANG ET AL: "Modeling and control of an integrated wind power generation and energy storage system", POWER&ENERGY SOCIETY GENERAL MEETING, 2009. PES '09. IEEE, IEEE, PISCATAWAY, NJ, USA, 26 July 2009 (2009-07-26), pages 1 - 8, XP031538736, ISBN: 978-1-4244-4241-6
ZHENHUA JIANG ET AL: "Modeling and control of an integrated wind power generation and energy storage system", POWER&ENERGY SOCIETY GENERAL MEETING, 2009. PES '09. IEEE, IEEE, PISCATAWAY, NJ, USA, 26 July 2009 (2009-07-26), pages 1 - 8, XP031538736, ISBN: 978-1-4244-4241-6
Attorney, Agent or Firm:
JHABAKH, Kalyan (International Law Center61-63 Dr. Radhakrishnan Salai,Mylapore, Chennai 4, IN)
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