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

Permanent Magnet Synchronous Generator-Based Standalone Wind Energy Supply System

ABSTRACT

In this paper, a novel calculation, in view of dc interface voltage, is proposed for successful vitality the executives of an independent permanent magnet synchronous generator (PMSG)- based variable speed wind vitality transformation framework comprising of battery, energy unit, and dump stack (i.e., electrolyzer). Additionally, by keeping up the dc connect voltage at its reference esteem, the yield air conditioning voltage of the inverter can be kept consistent regardless of varieties in the breeze speed and load. A compelling control system for the inverter, in view of the beat width adjustment (PWM) conspire, has been created to make the line voltages at the purpose of basic coupling (PCC) adjusted when the heap is uneven. Thus, an appropriate control of battery flow through dc– dc converter has been completed to diminish the electrical torque throb of the PMSG under an uneven load situation. In light of broad reproduction results utilizing MATLAB/SIMULINK, it has been set up that the execution of the controllers both in transient just as in relentless state is very palatable and I can likewise keep up most extreme power point following.

 

 BLOCK DIAGRAM

 

Fig. 1. PMSG-based standalone wind turbine with energy storage and dump load.

 EXPECTED SIMULATION RESULTS

 

Fig. 2. Response of mechanical torque for change in wind velocity.

 Fig. 3. (a) Load current; (b) wind speed.

Fig. 4. DC link voltage.

Fig. 5. RMS output voltage (PCC voltage).

Fig. 6. Instantaneous output voltage at s.

Fig. 7. Instantaneous output line current.

Fig. 8. Powers.

Fig.9. Powers.

Fig. 10. DC link voltage.

Fig. 11. Powers.

Fig. 12. DC link voltage.

 

Fig. 13. Response of controllers.

Fig. 14. Three phase currents for unbalanced load.

Fig. 15. Electrical torque of PMSG with and without dc–dc converter controller.

Fig. 16. Instantaneous line voltages at PCC for unbalanced load.

 

Fig. 17. (a) RMS value of line voltages at PCC after compensation; (b) modulation indexes.

Fig. 18. Instantaneous line voltages at PCC after compensation.

CONCLUSION

Control techniques to direct voltage of an independent variable speed wind turbine with a PMSG, battery, power device, and electrolyzer (goes about as dump stack) are displayed in this paper. By keeping up dc interface voltage at its reference esteem and controlling adjustment records of the PWM inverter, the voltage of inverter yield is kept up consistent at their evaluated qualities. From the reproduction results, it is seen that the controller can keep up the heap voltage great regardless of varieties in wind speed and load.An calculation is created to accomplish clever vitality the executives among the breeze generator, battery, power device, and electrolyzer. The impact of uneven load on the generator is examined and the dc– dc converter control plot is proposed to diminish its impact on the electrical torque of the generator. The dc– dc converter controller not just aides in keeping up the dc voltage steady yet additionally goes about as a dc-side dynamic channel and diminishes the motions in the generator torque which happen because of unequal load. PWM inverter control is consolidated to make the line voltage at PCC adjusted under an uneven load situation. Inverter control additionally helps in decreasing PCC voltage journey emerging because of moderate elements of water elctrolyzer when control goes to it. The complete consonant mutilation (THD) in voltages at PCC is about 5% which portrays the great nature of voltage produced at the client end. The recreation results exhibit that the execution of the controllers is agreeable under unfaltering state just as unique conditions and under adjusted just as lopsided load conditions.