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Master of Science Thesis in Electric Power Engineering - page 9 / 114

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      • 3.6.1

        Current controller

      • 3.6.2

        Voltage controller

      • 3.6.3

        Complete controller

      • 3.6.4

        Nyquist and Bode diagram

      • 3.6.5

        Conclusion

    • 3.7

      Phase Locked Loop (PLL)

      • 3.7.1

        Design

      • 3.7.2

        Simulations

      • 3.7.3

        Improvements and conclusion

    • 3.8

      Grid modeling

    • 3.9

      Grid connected converter simulation

      • 3.9.1

        Simulation steps, Simulink block diagram

      • 3.9.2

        Verification

      • 3.9.3

        Simulation results

4 VOLTAGE ORIENTED CONTROL – IMPLEMENTATION

    • 4.1

      Block diagram

    • 4.2

      Principle

    • 4.3

      Simulink model modification

    • 4.4

      Running an experiment

5 CONCLUSIONS AND FUTURE WORK

REFERENCES

APPENDICES

A. Three phase system – Coordinate transformations

  • A.

    1 Voltage and current definition

  • A.

    2 Equivalent two phase system,

transformation (Clarke)

    • A.

      3 Synchronous coordinate, dq transformation (Park)

    • A.

      4 Simulation

    • A.

      5 Impedance in synchronous coordinates

  • B.

    Voltage and current control, continuous simulation

    • B.

      1 Simulink current control tests – Block diagram

    • B.

      2 Continuous voltage controller, simulation with saturation, damping

  • C.

    Digital simulation

  • D.

    Voltage and current control, discrete time simulation

  • E.

    Stability analysis cont.

    • E.

      1 Simulations

  • F.

    Grid connected converter simulation cont.

    • F.

      1 Data and simulations

    • F.

      2 Matlab Script (Vdc Step)

  • G.

    Implementation

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