Control of a Stand Alone Variable Speed Wind Turbine with a Permanent Magnet Synchronous Generator

ABSTRACT:

A tale control methodology for the activity of a changeless magnet synchronous generator (PMSG) based independent variable speed wind turbine is exhibited in this paper,. The immediate drive PMSG is associated with the heap through a switch mode rectifier and a vector controlled heartbeat width regulated (PWM) IGBT-inverter. The generator side switch mode rectifier is controlled to accomplish greatest power from the breeze. The heap side PWM inverter is utilizing a moderately mind boggling vector control plan to control the abundancy and recurrence of the inverter yield voltage. As there is no matrix in an independent framework, the yield voltage must be controlled as far as abundancy and recurrence. The independent control is included with yield voltage and recurrence controller equipped for taking care of variable load. A clammy resistor controller is utilized to disperse abundance control amid blame or over-age. The potential abundance of intensity will be scattered in the moist resistor with the chopper control and the dc interface voltage will be kept up. Broad recreations have been performed utilizing Matlab/Simpower. Reenactment results demonstrate that the controllers can extricate most extreme power and manage the voltage and recurrence under fluctuating burden condition. The controller performs extremely well amid dynamic and relentless state condition.

 

BLOCK DIAGRAM:

Figure 1.Control Structure of a PMSG based standalone variable speed wind turbine.

 

EXPECTED SIMULATION RESULTS:

Figure 2. Response of the system for a step change of wind speed from 10 m/s to 12 m/s to 9 m/s to 10 m/s.

Figure 3. Voltage and current responses at a constant load.

Figure 4. Frequency response, DC link voltage and modulation index at a constant load.

Figure 5. Voltage and current responses when load is reduced by 50%.

Figure.6. Frequency response, DC link voltage and modulation index when load is reduced by 50%.

 

CONCLUSION:

Control methodology for an independent variable speed wind turbine with a PMSG is introduced in this paper. A basic control methodology for the generator side converter to separate greatest power is examined and executed utilizing Simpower dynamic framework reenactment programming. The controller is fit to boost yield of the variable speed wind turbine under fluctuating breeze. The heap side PWM inverter is controlled utilizing vector control plan to keep up the sufficiency and recurrence of the inverter yield voltage. It is seen that the controller can keep up the heap voltage and recurrence great at steady load and under shifting burden condition. The creating framework with the proposed control procedure is appropriate for a little scale independent variable speed wind turbine establishment for remote region control supply. The reenactment results exhibit that the controller works great and shows great dynamic and consistent state execution

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