Relevant bibliographies by topics / Orthogonal-signal generator (OSG)

Academic literature on the topic 'Orthogonal-signal generator (OSG)'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Orthogonal-signal generator (OSG)"

1

Kunzler, Luccas M., and Luiz A. C. Lopes. "Wide Frequency Band Single-Phase Amplitude and Phase Angle Detection Based on Integral and Derivative Actions." Electronics 9, no. 10 (September 26, 2020): 1578. http://dx.doi.org/10.3390/electronics9101578.

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Numerous applications, such as the synchronization of distributed energy resources to an existing AC grid, the operation of active power filters or the amplification of signals for Power-Hardware-In-The-Loop (PHIL) systems require a few tasks in common. Amplitude, phase angle and frequency detection are crucial for all these applications and many more. Various techniques are presented for three-phase and single-phase applications but only a few of them are able to identify the signals’ attributes for a wide range of frequencies and amplitudes. Single-phase systems are typically burdensome, considering the challenge to create an internal signal, orthogonal with the input, in order to perform the phase angle detection. This matter is even more critical when the amplitude and frequency of the input signal varies in a wide range. This paper presents an Orthogonal Signal Generator (OSG) based on integral and derivative actions. It includes a detailed design procedure and a design example. The performance of a single-phase wide range amplitude and frequency detector based on the discussed OSG is experimentally validated under steady state and dynamic conditions.
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2

Ding, Bao, Gong Zhang, Yong Ming Zhang, and Liang Zhao. "A Phase Locked Loop Method for Low Voltage Ride-Through Control in Three-Phase Three-Wire Photovoltaic Grid System." Applied Mechanics and Materials 415 (September 2013): 174–79. http://dx.doi.org/10.4028/www.scientific.net/amm.415.174.

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Low voltage ride through (LVRT) is regarded as one of the biggest challenges in photovoltaic grid equipments designing, manufacturing and control technology. The fast and accurate automatic phase locked control is the premise to achieve photovoltaic grid low voltage ride through. Considering that the traditional phase locked loop method is difficult to adapt the performance requirements of low voltage ride through (LVRT) in three-phase three-wire photovoltaic grid system, this paper presents a new three-phase unbalanced phase locked loop method. Improved second order generalized integral orthogonal signal generator (SOGI-OSG) is used for line voltage detection; Synchronous reference frame for phase locked loop (SRF-PLL) is used for line voltage phase locked and phase angle detection; Heron formula and Sine theorem is adopted to calculate the three-phase phase voltage amplitude and phase angle. Research results show that when grid voltage dips, this phase locked loop method can detect the fault signal accurately. It provides a technical support for photovoltaic grid low voltage ride through system.
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3

Iqbal, Muhammad, Iwan Setiawan, and Agung Nugroho. "PERANCANGAN SISTEM MONITORING DAYA UNTUK INVERTER SATU FASA GUNA PENGUKURAN DAYA TERALIR SECARA REALTIME." TRANSIENT 7, no. 3 (May 18, 2019): 761. http://dx.doi.org/10.14710/transient.7.3.761-767.

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Penggunaan energi listrik secara global meningkat dari tahun ke tahun dan efek emisi gas rumah kacapun masih dirasakan akibat pembakaran bahan bakar fosil. Hal tersebut mendorong peningkatan teknologi terhadap instalasi dengan sumber energi terbarukan berupa pembangkit listrik photovoltaic (PV) yang mempunyai potensi terbesar di Indonesia. Namun, sistem pada PV masih berupa DC sehingga diperlukan inverter untuk merubah sistem menjadi AC. Namun, ketika inverter menyuplai beban daya ada kemungkinan melebihi spesifikasinya. Oleh karena itu, penelitian ini merancang sistem monitoring daya secara realtime dan akurat untuk memastikan kualitas penyaluran daya sudah optimal dan sesuai spesifikasi. Metode yang diterapkan pada penelitian ini adalah metode Orthogonal Signal Generator (OSG) yang diproses oleh STM32F103C8T6. Metode tersebut menggunakan delay ¼ periode untuk mendapatkan nilai daya keluaran. Hasil pengujian diperoleh error daya aktif 1% pada beban 9,6 ohm dan 1,64% pada Beban 47,5 Ohm, sedangkan pada daya reaktif didapat selisih 0,83 VAR pada beban 9,6 Ohm dan 0,89 VAR pada beban 47,5 Ohm. Berdasarkan buku PLN dikategorikan dalam alat kerja.
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4

Rochim, Basten Bastory, Abdul Syakur, and Budi Setiyono. "PERANCANGAN OTOMASI VARIABLE TRANSFORMATOR UNTUK MENGATUR TEGANGAN KELUARAN BERBASIS MIKROKONTROLER." TRANSIENT 7, no. 4 (May 25, 2019): 925. http://dx.doi.org/10.14710/transient.7.4.925-932.

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Sistem otomasi di zaman sekarang berkembang dengan sangat pesat hingga hampir semua aspek pekerjaan menggunakan otomasi dalam menyelesaikan pekerjaan. Untuk itu dibuatlah perancangan kontrol tegangan variable transformator ini menggunakan otomasi menggunakan mikrokontroler STM32F103C8T6 dan aktuatornya berupa servo continuous DF15RSMG. Variable transformator ini akan digunakan sebagai masukan tegangan untuk trafo sign sehingga akan menghasilkan tegangan tinggi. Sampai saat ini variable transformator yang digunakan masih dengan menggunakan metode manual yaitu menggunakan tangan untuk memutar knopnya dan membaca tegangan aslinya menggunakan multimeter. Untuk membaca nilai tegangan AC dari keluaran variable transformator menggunakan sensor ZMPT101B menggunakan penundaan T/4 OSG (Orthogonal Signal Generator) . Metode Kontrol yang digunakan adalah metode on/off dan PI(Proporsional Integral). Pada pengujian respon sistem dengan referensi tetap menggunakan kontroler PI dengan nilai Kp 1,0 dan Ki 0,05 dihasilkan Td sebesar 6 detik, Tr sebesar 14 detik, Tp sebesar 14 detik, Ts sebesar 15 detik, dan Mp yang dihasilkan adalah 0,08%. Pengujian menggunakan kontroler ini lebih baik responnya jika dibandingan dengan pengujian menggunakan kontroler lainnya. Pada pengujian respon dengan pemberian gangguan semua kontroler yang diuji dapat merespon dengan baik.
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5

Jampana, Bangarraju, Jayalaxmi Askani, and Rajagopal Veramalla. "DC Component Extraction of Notch Filter Algorithm for Active Power Filters." Journal Européen des Systèmes Automatisés​ 55, no. 2 (April 30, 2022): 207–12. http://dx.doi.org/10.18280/jesa.550207.

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This work presents a way to handle the DC component of input signals for PLL and notch filter applications, which are utilized for filtering and synchronization. The input signal of a DC component may be due to some sort of malfunction, or it may be the result of the structure and restrictions of the measurement/conversion procedures. This part makes the system's loop oscillate at low frequencies and no filter can fully filter them out because that would significantly harm the system's dynamic response. The proposal involves augmenting the PLL structure with a new loop. It is basic architecturally and in contrast to a currently presented method and it does not detract from the algorithm's high-frequency filtering level. This Orthogonal Signal Generators (OSG) control algorithm is used for active power filter to maintain unity power factor, neutral current compensation using star/three single transformer & current harmonics mitigation. The MATLAB/Simulink results are demonstrated for the above stated Power Quality (PQ) problems.
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6

Zhang, Gang, Chuan gang Wang, Guo quan Li, and Jin zhao Lin. "Design and Performance Analysis of MISO-ORM-DCSK System over Rayleigh Fading Channels." International Journal of Antennas and Propagation 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/8459109.

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A novel chaotic communication system, named Orthogonality-based Reference Modulated-Differential Chaos Shift Keying (ORM-DCSK), is proposed to enhance the performance of RM-DCSK. By designing an orthogonal chaotic generator (OCG), the intrasignal interference components in RM-DCSK are eliminated. Also, the signal frame format is expanded so the average bit energy is reduced. As a result, the proposed system has less interference in decision variables. Furthermore, to investigate the bit error rate (BER) performance over Rayleigh fading channels, the MISO-ORM-DCSK is studied. The BER expressions of the new system are derived and analyzed over AWGN channel and multipath Rayleigh fading channel. All simulation results not only show that the proposed system can obtain significant improvement but also verify the analysis in theory.
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7

Esnaola, G., J. Sáenz, E. Zorita, A. Fontán, V. Valencia, and P. Lazure. "Daily scale wintertime sea surface temperature and IPC-Navidad variability in the southern Bay of Biscay from 1981 to 2010." Ocean Science 9, no. 4 (July 19, 2013): 655–79. http://dx.doi.org/10.5194/os-9-655-2013.

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Abstract. The combination of remotely sensed gappy Sea surface temperature (SST) images with the missing data filling DINEOF (data interpolating empirical orthogonal functions) technique, followed by a principal component analysis of the reconstructed data, has been used to identify the time evolution and the daily scale variability of the wintertime surface signal of the Iberian Poleward Current (IPC), or Navidad, during the 1981–2010 period. An exhaustive comparison with the existing bibliography, and the vertical temperature and salinity profiles related to its extremes over the Bay of Biscay area, show that the obtained time series accurately reflect the IPC-Navidad variability. Once a time series for the evolution of the SST signal of the current over the last decades is well established, this time series is used to propose a physical mechanism in relation to the variability of the IPC-Navidad, involving both atmospheric and oceanic variables. According to the proposed mechanism, an atmospheric circulation anomaly observed in both the 500 hPa and the surface levels generates atmospheric surface level pressure, wind-stress and heat-flux anomalies. In turn, those surface level atmospheric anomalies induce mutually coherent SST and sea level anomalies over the North Atlantic area, and locally, in the Bay of Biscay area. These anomalies, both locally over the Bay of Biscay area and over the North Atlantic, are in agreement with several mechanisms that have separately been related to the variability of the IPC-Navidad, i.e. the south-westerly winds, the joint effect of baroclinicity and relief (JEBAR) effect, the topographic β effect and a weakened North Atlantic gyre.
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