A single-stage three-phase grid-connected photovoltaic system with fast grid voltage regulation

Foroushani, Hossein Mohammadian; Mohammadrezaei, Mohammad; Madani, Seyed M.; Sayyar, Anahita

doi:10.1109/ipsc.2015.7827764

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…In the synchronous reference frame method, phase currents are decoupled to I d and I q components through Park transformation to independently control the inverter dc‐link and PCC voltages, respectively. However, there are cross‐coupling and feed‐forward terms in the control algorithm that increase the complexity of the approach and make that incapable of mitigating low‐ordered harmonics . In the stationary reference frame method, grid currents are transformed from 3‐phase domain to the αβ reference frame via Clarke Matrix.…”

Section: Introductionmentioning

confidence: 99%

“…There are mainly 4 control strategies applied to the inverters of grid‐connected PV systems to regulate PCC voltage. The methods are based on synchronous (or dq ) reference frame, stationary (or αβ ) reference frame, instantaneous reactive power or pq , and natural (or abc ) reference frame . In the synchronous reference frame method, phase currents are decoupled to I d and I q components through Park transformation to independently control the inverter dc‐link and PCC voltages, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…However, there are cross-coupling and feed-forward terms in the control algorithm that increase the complexity of the approach and make that incapable of mitigating low-ordered harmonics. 6 In the stationary reference frame method, grid currents are transformed from 3-phase domain to the αβ reference frame via Clarke Matrix. Two closed-loop current controllers proposed in Perera et al 8 dynamically control the active and reactive power of PV system to regulate the PCC voltage.…”

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confidence: 99%

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A new method to point of common coupling voltage control in distribution grid-connected photovoltaic systems

Ghorbani

Mosallanejad

Mohamadian

2017

Int Trans Electr Energ Syst

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Summary Nowadays, in addition to providing active power to the local loads, photovoltaic systems are helping the grid to control the point of common coupling voltage. In this paper, a new version of instantaneous reactive power theory has been proposed to control the point of common coupling voltage. The advantages of using this method are the absence of phase‐locked loop and the application of simple calculations to raise the speed of the system response. Moreover, the proposed method is in such a way so that it allows the system to mitigate the symmetrical and asymmetrical voltage sag and swell; consequently, the quality of power delivered by photovoltaic system to the grid will be improved. On the other hand, the proposed structure, in addition to increasing the reliability of power injection, maintains providing of balanced active power in the presence of unbalanced reactive power without the need to additional controllers. To validate the proposed structure, the system has been tested on IEEE 33‐bus radial distribution grid and the results are presented from a dynamic simulation by using MATLAB/SIMULINK. According to the results, the proposed method regulates the point of common coupling voltage with a response time of about 0.2 second that is faster than conventional control strategies.

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Section: Introductionmentioning

confidence: 99%