1 / 22

MODELING OF THE WIND TURBINE WITH A PERMANENT MAGNET SYNCHRONOUS GENERATOR

MODELING OF THE WIND TURBINE WITH A PERMANENT MAGNET SYNCHRONOUS GENERATOR. SINDHU.C.MANOHARAN Edited By Sarath S Nair www.technologyfuturae.com. CONTENTS. Introduction How does a wind turbine work Model of wind turbine with PMSG Different types of PMSG Constructional features

kaden-cole
Download Presentation

MODELING OF THE WIND TURBINE WITH A PERMANENT MAGNET SYNCHRONOUS GENERATOR

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MODELING OF THE WIND TURBINE WITH A PERMANENT MAGNET SYNCHRONOUS GENERATOR SINDHU.C.MANOHARAN Edited By Sarath S Nair www.technologyfuturae.com www.technologyfuturae.com

  2. CONTENTS • Introduction • How does a wind turbine work • Model of wind turbine with PMSG • Different types of PMSG • Constructional features • Modeling of generator • Voltage and torque equation Permanent Magnet Synchronous Generator • Control schemes of a permanent magnet (PM) generator • AC-DC-AC Power Conversion System • Conclusion www.technologyfuturae.com

  3. INTRODUCTION • Wind energy is one of the best technologies available today to provide a sustainable supply to the world development. • In terms of the generators for wind-power application, there are different types of wind turbine are there, fixed-speed wind turbines and variable speed wind turbine • In fixed speed wind turbine, induction generators are used (application in wind farms). But the limitations of such generators are low efficiency and poor power quality • In variable speed wind turbine, doubly fed induction generators and permanent magnetic synchronous generators are used. www.technologyfuturae.com

  4. HOW DOES A WIND TURBINE WORK www.technologyfuturae.com

  5. MODEL OF WIND TURBINE WITH PMSG • VSC1=machine side power converter • T1=interface transformer • L1=inductance of the transformer • Ug=Output voltage of VSC1 • fg=electric frequency www.technologyfuturae.com

  6. DIFFERENT TYPES OF PMSG • Radial flux permanent magnet machine (RFPM) • Axial flux permanent magnet machine (AFPM) • Transverse flux permanent magnet machine (TFPM) www.technologyfuturae.com

  7. RFPM machines • The RFPM machine is producing the magnetic flux in the radial direction with PMs which are radial oriented. It is the best choice for direct drive wind turbine • AFPM machines • The AFPM machine is a machine producing magnetic flux in the axial direction with permanent magnets. (application in low speed low power range) • TFPM machines • The transverse flux (TF) principle means that the path of the magnetic flux is perpendicular to the direction of the rotor rotation. www.technologyfuturae.com

  8. CONSTRUCTION OF PMSG • Stator is composed by teeth formed by silicon iron sheets • These teeth are fixed by 2 bronze disks in their end. • Skewing is provided to avoid cogging torque www.technologyfuturae.com

  9. PRINCIPAL PARTS OF GENERATOR www.technologyfuturae.com

  10. PERMANENT MAGNET SYNCHRONOUS GENERATOR • Voltage for a PM generator in the d-q axis synchronous rotational reference frame can be expressed as www.technologyfuturae.com

  11. GENERATOR MODEL • The dynamic model of PMSG is derived from two phase synchronous reference frame ,in which q axis is 90 ahead of d axis with respect to the direction of rotation www.technologyfuturae.com

  12. l GENERATOR MODEL (cont’d) • The electrical model of PMSG in the synchronous reference frame is • Rs =stator resistance • Ld and Lq=inductance of the generator on d and q axis • Lld and Llq=leakage inductance of generator on d and q axis • We=electrical rotating speed(=Np Wg) www.technologyfuturae.com

  13. GENERATOR MODEL (cont’d) • Ld=Lds+ Lqs then equation becomes • We assume Ld=Lq=L then equation becomes www.technologyfuturae.com

  14. GENERATOR MODEL (cont’d) • ed=0 • eq=we • Apply in above equation we will get equivalent circuit as www.technologyfuturae.com

  15. TORQUE EQUATION • As the inductance of d and q axis are equal the torque can be expressed as follows… • Which shows Torque can be regulated by current through q axis www.technologyfuturae.com

  16. CONTROL STRATEGY OF WIND TURBINE • Pitch control strategy • Yaw control www.technologyfuturae.com

  17. DESIGN SPECIFICATION OF PMSG • Rated power = 2MW; • Rated wind speed = 12m/s; • Resistance: Ra =.1Ohm; • Inductance: L =0.005H; • Gear ratio: ng =77; • Number of pole pairs: np =2; • Radius of wind turbine rotor: R=41m; • Equivalent inertia: J=8000kg.m2; www.technologyfuturae.com

  18. AC-DC-AC POWER CONVERSION SYSTEM • The amplitude and frequency of the output voltage are not constant due to the variable speed and fixed excitation of the permanent magnets. • 3-phase diode rectifier is used for the AC/DC conversion. • The SPWM (sinusoidal pulse width modulated) inverter with filter is adapted for the DC/AC power conversion. • The PIC microcontroller combined with dedicated SA4828 chip is adopted to control of the SPWM inverter for a 20kW direct driven PM generator wind power generation system. www.technologyfuturae.com

  19. SUMMARY • The complete model of the variable speed wind turbine with PMSG that is scheduled to connect AC grid is discussed • The design characteristics Constructional features of PMSG is discussed • The control strategy for AC/DC/AC power conversion of the PM generator are also discussed www.technologyfuturae.com

  20. REFERENCE [1] E. Muljadi, S. Drouilhet, R. Holz and V. Gevorgian, "Analysis of permanent magnet generator for wind power battery charging,“ IEEE-IAS Annual Meeting, vol.1 , Oct. 1996 ,pp.541-548. [2] A. J. G. Westlake, J. R. Bumby, and E. Spooner, "Damping the power-angle oscillations of a permanent-magnet synchronous generator with particular reference to wind applications," IEE Proc.- Electr. Power Appl, Vol. 143, No. 3, May 1996, pp. 269-280. [3] Ozdemir Gol’ and Bijan Sobhi-Najafabadi, “Use of Impedance Models in Permanent Magnet Synchronous Generator Design” [4] Ming Yin, “Modeling of the Wind Turbine with a Permanent Magnet Synchronous Generator for Integration” [5] Rogel R. Wallace,Thomas A. Lipo, Luis A. Moran,Juan A. Tapia:Design and Construction of a Permanent Magnet Axial Flux Synchronous Generatorin Proc. IEEE PESC’90, San Antonio, TX, USA, vol. 1, pp. 325~332, Jun. 1990. www.technologyfuturae.com

  21. Technical Presentations, Research Reviews, New designs & Developments Log On to www.technologyfuturae.com TechnologyFuturae

  22. THANKYOU……… www.technologyfuturae.com

More Related