BD‐VSS individual weighting factor sign based adaptive filter control for power quality improvement in weak distribution grid

Singh, Sunaina; Kewat, Seema; Singh, Bhim; Panigrahi, Bijaya Ketan; Kushwaha, Manoj Kumar

doi:10.1049/iet-gtd.2018.6337

Cited by 4 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Take Equation (8) into Equation 2, and the sum symbol can be eliminated using the following formula:…”

Section: Of 20mentioning

confidence: 99%

“…Therefore, power quality problems in the weak power grid should be well handled. Among the several power quality improvement measures, the shunt active power filter (SAPF), based on the principle of the controlled current source, provides a flexible and effective solution for the weak grid [6][7][8]. It can inject a compensation current characterized by the equal amplitude and the opposite phase compared with the load-side reactive and harmonic current to ensure the grid-side unity power factor and sinusoidal current.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Applying Directly Modified RDFT Method in Active Power Filter for the Power Quality Improvement of the Weak Power Grid

Hou

Song

et al. 2020

Energies

View full text Add to dashboard Cite

The recursive discrete Fourier transformation (RDFT) method can be used for grid voltage phase-locking and harmonic current detection in a shunt active power filter (SAPF). However, in weak power grids such as microgrids, significant errors might occur in the amplitude and phase detection due to grid frequency deviation. In this study, to resolve this problem, a directly modified RDFT (DMRDFT) method is proposed for SAPF weak grid application. Through theoretical analysis, the errors of phase and amplitude detection were found to consist of fixed error and fluctuating error. The fixed error is only determined by frequency deviation, whereas the fluctuating error is also related to the recursive pointer and the initial phase. The DMRDFT algorithm can obtain the real grid frequency through the calculation of the phase angle difference for two consecutive periods. Then it can employ the grid frequency deviation and the recursive pointer value to directly correct the detection results gathered by the conventional RDFT algorithm. As a result, DMRDFT can yield accurate amplitude and phase information of the grid voltage or current with a simple calculation. Simulation results verify the high precision of the proposed DMRDFT method in both steady and dynamic situations. Experimental results show that the DMRDFT method can significantly increase the SAPF compensation performance when grid frequency shifts.

show abstract

“…Take Equation (8) into Equation 2, and the sum symbol can be eliminated using the following formula:…”

Section: Of 20mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Applying Directly Modified RDFT Method in Active Power Filter for the Power Quality Improvement of the Weak Power Grid

Hou

Song

et al. 2020

Energies

View full text Add to dashboard Cite

show abstract

“…Several publications have addressed these challenges and have come up with control objectives to reduce their effect on the system performance [19]. DFIG working at non‐ideal grid conditions also injects unbalanced and harmonically polluted currents into the grid, which increases ohmic loss and reduces the utilisation capacity of the distribution network [20]. The unbalance, if remains unchecked, can propagate deeper into the distribution network through transformers [21].…”

Section: Introductionmentioning

confidence: 99%

Reduced sensor operation and power quality improvement in grid‐tied doubly fed induction generator using composite and twin frequency generalised integrators

Das

Puchalapalli

Singh

2021

IET Renewable Power Gen

Self Cite

View full text Add to dashboard Cite

This study presents a strategy involving a reduction in the stator current sensor count for control of power converters, in a doubly fed induction generator (DFIG)‐based wind energy conversion system (WECS). The reduced sensor vector control scheme is effectively used in lieu of the conventional vector control algorithm during sensor failure without any change in the overall control structure. This keeps the system operational in case of sensor failure. The reduced sensor scheme necessitates precise estimation of stator flux amplitude and an orientation angle, for control of power converters under all operating conditions. A composite generalised integrator phase‐locked loop is presented to estimate accurately the stator flux amplitude and orientation angle, even at operating system irregularities such as unbalanced voltages, lower‐order harmonics in the grid voltage, DC bias in sensing circuitry, and so forth, which otherwise lead to distortions in flux and orientation angle. The grid‐side converter control is based on a twin frequency improved second‐order generalised integrator. It enables fast and accurate power quality improvement in DFIG‐based WECS during load and grid abnormalities. A laboratory prototype is developed to validate the control of the system.

show abstract

Lyapunov based harmonic compensation and charging with three phase shunt active power filter in electrical vehicle applications

Çelík

2022

International Journal of Electrical Power & Energy Systems

View full text Add to dashboard Cite

BD‐VSS individual weighting factor sign based adaptive filter control for power quality improvement in weak distribution grid

Cited by 4 publications

References 17 publications

Applying Directly Modified RDFT Method in Active Power Filter for the Power Quality Improvement of the Weak Power Grid

Applying Directly Modified RDFT Method in Active Power Filter for the Power Quality Improvement of the Weak Power Grid

Reduced sensor operation and power quality improvement in grid‐tied doubly fed induction generator using composite and twin frequency generalised integrators

Lyapunov based harmonic compensation and charging with three phase shunt active power filter in electrical vehicle applications

Contact Info

Product

Resources

About