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Sensorless Maximum Power Point Tracking in Multi-Type Wind Energy Conversion Systems

Sensorless Maximum Power Point Tracking in Multi-Type Wind Energy Conversion Systems. Presenter: Lingling Fan University of South Florida Tampa, FL 33620 USA. Outline. Objectives Two types of WECS DFIG (doubly-fed induction generator) connected with the grid

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Sensorless Maximum Power Point Tracking in Multi-Type Wind Energy Conversion Systems

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  1. Sensorless Maximum Power Point Tracking in Multi-Type Wind Energy Conversion Systems Presenter: Lingling Fan University of South Florida Tampa, FL 33620 USA

  2. Outline • Objectives • Two types of WECS • DFIG (doubly-fed induction generator) connected with the grid • PMSG (permanent magnet synchronous generator) serving a load • MPPT principles • With/wo anemometer • Case studies • Conclusion

  3. Objective • Maximum power point tracking (MPPT) of wind energy conversion systems (WECS) without anemometer to measure wind speed • Existing research • MPPT with anemometer or wind speed estimation • Control Rotor speed • MPPT without anemometer • Control torque or power

  4. fm Types of WECS - DFIG Ps RSC AC/DC GSC DC/AC Pr = sPs

  5. Types of WECS - PMSG

  6. MPPT principle • Consumed electric power should equal to the wind power generated • Maximum wind power harvested:

  7. MPPT for DFIG Changing injected voltage from the rotor side converter (RSC) can move the operating point for MPPT!

  8. MPPT for PMSG

  9. MPPT - PMSG Changing the duty cycle of the dc-dc booster D can move the operating point for MPPT!

  10. Feedback control for MPPT

  11. Case Studies • A grid-tied DFIG

  12. Case Studies • A PMSG stand-alone system

  13. Conclusion • A frame work of sensorless MPPT is built • Applications discussed • A grid-tied DFIG system • A stand alone PMSG system

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