Application of the second order generalized integrator in digital control systems

Możdżyński, Kamil; Rafał, K.; Bobrowska-Rafał, M.

doi:10.2478/aee-2014-0031

Cited by 22 publications

(9 citation statements)

References 18 publications

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“…Possible alternative detections methods may include zero-crossing detection, band-pass filtering with envelope detection, or spectral techniques such as the zoom or sliding DFT. This paper utilizes an infinite impulse response (IIR) bandpass filter [8], followed by a phase-locked loop (PLL) that uses a second order generalized integrator (SOGI) as the phase detector [9][10][11][12][13]. This is chosen due to its robustness and low computational burden as an additional control loop, where the SOGI phase detection helps alleviate the digital input filter burden due to its natural bandpass filtering around its resonant frequency.…”

Section: Detection Methodsmentioning

confidence: 99%

Low Frequency Injection as a Method of Low-Level DC Microgrid Communication

Davidson

Benigni

2020

Energies

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This paper provides a simple low-level unidirectional global communication method for DC microgrids, and requires no hardware modifications to the microgrid and interfacing power electronic converters. The underlying premise to this communication method is injecting low-frequency low-voltage sinusoidal components into the DC microgrid power lines. This method deviates from the common bit-level communication scheme by relating parameters and commands with certain frequency components. Communication structures are included as a basis for communication protocols, and a detection method is proposed for detecting the injected frequencies. The injection method, communication structure, and detection method are implemented on a live-scale DC microgrid.

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Section: Detection Methodsmentioning

confidence: 99%

Low Frequency Injection as a Method of Low-Level DC Microgrid Communication

Davidson

Benigni

2020

Energies

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“…Dibandingkan dengan algoritma PLL lainnya [4]- [10], Second Order Generalized Integrator-Phase Locked Loop (SOGI-PLL) memiliki karakteristik adaptive-filtering dalam penyesuaian informasi fase ketika jaringan mengalami gangguan sehingga dapat meningkatkan performa sistem PLL tegangan satu fasa [7] [8].…”

Section: Pendahuluanunclassified

“…Implementasi kedalam bentuk digital diberikan menggunakan persamaan euler forward. Berikut adalah persamaan dalam proses diskritisasi struktur SOGI-QSG [8]. [7].…”

Section: Gambar 1 Diagram Blok Algoritma Sogi-pll Satu Fasa Dengan Kunclassified

“…Proses pembangkitan sinyal pada blok SOGI-QSG terjadi secara feedback tertutup. Pemilihan parameter K dalam Penelitian ini digunakan K = 0,999 karena menghasilkan filter keluaran sinyal yang paling baik [8]. Hasil akhir dari blok SOGI-QSG berupa sinyal Vα dan Vβ yang kemudian masuk kepada blok algoritma kontrol pada Gambar 5.…”

Section: Gambar 4 Diagram Blok Simulink Sogi-qsgunclassified

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Desain Dan Implementasi Second Order Generalized Integrator-Phase Locked Loop (Sogi-Pll) Untuk Tegangan Satu Fasa Menggunakan Dspic30f4011 Dengan Kontrol Proportional Integral

2019

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AbstrakGrid Side Converter (GSC) merupakan perangkat konverter daya yang berperan penting dalam sistem konversi energi listrik terutama dalam pemanfaatan sumber energi terbarukan untuk dapat terkoneksi dengan grid. Berdasarkan kebutuhan interkoneksi jaringan, sistem GSC harus tetap dapat beroperasi dan terkoneksi meskipun jaringan mengalami interferensi. Berdasarkan masalah tersebut, dibutuhkan metode yang memiliki kemampuan mendeteksi gangguan secara cepat dalam sistem sinkronisasi antara GSC dengan grid secara akurat, yaitu dengan menggunakan metode Phase Locked Loop (PLL) yang dapat menyediakan informasi tegangan jaringan. Dibandingkan dengan algoritma PLL lainnya, Second Order Generalized Integrator-Phase Locked Loop (SOGI-PLL) memiliki karakteristik adaptive-filtering dalam penyesuaian informasi fase ketika jaringan mengalami gangguan. Metode SOGI-PLL dalam Penelitian ini akan diimplementasikan untuk sistem tegangan satu fasa menggunakan mikrokontroler dsPIC30F4011 dengan kontroler PI. Kontroler PI diharapkan mampu memiliki respon yang cepat terhadap perubahan yang terjadi, dikarenakan tujuan dari kebutuhan PLL itu sendiri adalah mendapatkan informasi tegangan jaringan berupa magnitude, frekuensi, dan fase secara realtime. Hasil pengujian algoritma SOGI-PLL melalui penggunaan sensor ZMPT101B menunjukkan informasi magnitude, frekuensi, dan fase sesuai dengan tegangan jaringan. Hasil estimasi fase ini juga sudah diimplementasikan pada proyek pengembangan produk inverter, sehingga tegangan keluaran inverter sudah sefase terhadap tegangan jaringan. AbstractGrid Side Converter (GSC) is a power converter device that have important role in electrical energy conversion systems especially in the utilization of renewable energy sources in order to be connected to the grid. Based on the grid connection requirements, the GSC should be able to operate even if the grid is experiencing interference. Based on the problem, the GSC control system technically should have ability to detect grid disturbances quickly by using Phase Locked Loop (PLL) method that can provide grid voltage information. Compared with other PLL algorithms, the Second Order Generalized Integrator-Phase Locked Loop (SOGI-PLL) has adaptive-filtering characteristics in adjusting phase information. The SOGI-PLL method in this final project will be implemented for single phase system using dsPIC30F4011 microcontroller with PI controller. PI controller is expected to make the system has a fast response to the changes that occur, because the purpose of the PLL's own needs is to get the results of grid voltage information such as magnitude, frequency, and phase in realtime. As the results, the SOGI-PLL algorithm through the use of ZMPT101B sensor shows the magnitude, frequency, and phase information is suitable with the grid voltage. The result of phase estimation have also been implemented in the inverter product development project, so that the output voltage inverter is in phase with the grid voltage.

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“…To achieve that, several methods have been proposed in the literature. The Dual second order generalized integrator (DSOGI-FLL) methods proposed in [31][32][33] is used to separate the positive and negative sequences (PNSC) of voltage and current. When the proposed method is applied in the DC distribution system.…”

Section: (20) (21)mentioning

confidence: 99%

An overall Control of BDFIG using Direct Power Control for WECS under Unbalanced Grid Voltage Conditions

2018

IJERAT

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Application of the second order generalized integrator in digital control systems

Cited by 22 publications

References 18 publications

Low Frequency Injection as a Method of Low-Level DC Microgrid Communication

Low Frequency Injection as a Method of Low-Level DC Microgrid Communication

Desain Dan Implementasi Second Order Generalized Integrator-Phase Locked Loop (Sogi-Pll) Untuk Tegangan Satu Fasa Menggunakan Dspic30f4011 Dengan Kontrol Proportional Integral

An overall Control of BDFIG using Direct Power Control for WECS under Unbalanced Grid Voltage Conditions

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