Suppression of harmonic distortions in second order generalised integrator based PLLs for grid connected converters

Colombage, Kalhana; Wang, Jiabin; Edo, T. B.; Sen, Bhaskar

doi:10.1049/cp.2016.0347

Cited by 2 publications

(4 citation statements)

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“…It is based on the quadrature signal generation. 23 In dynamic condition, this PLL is more stable than the other two mentioned in Sections 3.1 and 3.2 for the given AC system. As the name suggested, it has two SOGI-PLL loop, and integrators inside one loop will behave like band-pass filter.…”

Section: Control Algorithm Based On Maf-pllmentioning

confidence: 79%

“…Figure 3A shows a partial part of complete control algorithm based on DSOGI‐PLL, which is used to track the phase angle from input quantity. It is based on the quadrature signal generation 23 . In dynamic condition, this PLL is more stable than the other two mentioned in Sections 4 and 8 for the given AC system.…”

Section: Control Algorithmsmentioning

confidence: 99%

“…22 Among this PLLs, the SOGI-based PLLs have been concluded to have high disturbance rejection capability, fast dynamic response, good filtering capability, and good harmonic extraction. 23 A single phase frequency fixed SOGI-based PLL has been implemented for a grid connected converter. The control satisfactorily functions and computes the fixed frequency of the grid during unhealthy condition 24 .…”

Section: Introductionmentioning

confidence: 99%

“…Further, three‐phase PLLs are compared and analysed like multiple SRF‐PLL, complex coefficient filter PLL (CCF‐PLL), and second‐order generalized integrator (SOGI)–based PLLs 22 . Among this PLLs, the SOGI‐based PLLs have been concluded to have high disturbance rejection capability, fast dynamic response, good filtering capability, and good harmonic extraction 23 . A single phase frequency fixed SOGI‐based PLL has been implemented for a grid connected converter.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phase lock loop–based algorithms for DSTATCOM to mitigate load created power quality problems

Arya

Patel

Alam

et al. 2019

Int Trans Electr Energ Syst

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Summary This paper describes about implementation of phase‐locked loop (PLL)–based control algorithms for distribution static compensator (DSTATCOM) used to mitigate power quality issues due to unbalanced and non‐linear load. Three control algorithms based on moving average filter PLL (MAF‐PLL), double second order generalized integrator PLL (DSOGI‐PLL), and adaptive filter with frequency estimation loop PLL (AFFEL‐PLL) are used in this paper. These are more suitable to mitigate the power quality problems created by non‐linear and unbalanced loads in distribution system. The reason behind selection in this application is explained as follows. The MAF‐PLL has great filtering quality with less computational burden on processor which is verified using total harmonic distortion (THD) performance. AFFEL‐PLL has variable integral gain that prevents large phase jump during frequency drift and load transient condition, this gives fast response. DSOGI‐PLL uses both orthogonal components and prevents oscillatory error and gives more stable operation. The MAF‐PLL and AFFEL‐PLL uses only quadrature axis “q” component for reduction of phase error and detection of theta. To mitigate power quality issues, continuous monitoring of AC grid system is required, which provide information in terms of frequency, phase, and fundamental voltage magnitude. Out of all, the phase detecting methods using PLL is standard method to extract such information. All the PLLs mentioned here extract the required grid information. Further, DSOGI‐PLL converts the distorted three‐phase load current into respective orthogonal components. All the control algorithms mentioned are implemented using MATLAB and performance of most effect algorithm is recorded in laboratory environments.

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Section: Control Algorithm Based On Maf-pllmentioning

confidence: 79%

Section: Control Algorithmsmentioning

confidence: 99%