Relevant bibliographies by topics / Dq-frame

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Dq-frame'

Author: Grafiati
Published: 11 December 2022
Last updated: 25 January 2023

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Journal articles on the topic "Dq-frame"

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Qi, Huanruo, Ningkang Zheng, Xiangyang Yan, and Yilong Kang. "Study on High Performance Control of the Machine-Side Converter of Doubly-Fed Turbines under Grid Distortion." E3S Web of Conferences 185 (2020): 01060. http://dx.doi.org/10.1051/e3sconf/202018501060.

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Two control strategies of DFIG under grid distortion are firstly summarized, namely, the control strategy of PI-R current controller based on dq reference frame and the control strategy of PI current controller based on the multiple rotating dq reference frame, and their advantages and disadvantages are analysed. On the basis of dynamic modelling of DFIG under grid distortion, in view of the defect that DFIG coupling is not considered in the control strategy of PI-R current controller based on dq reference frame, an improved control strategy considering motor coupling is proposed. In the end, the modelling and simulation of the unimproved and improved control strategies of PI-R current controller based on dq reference frame are carried out, and the simulation results verified the effectiveness of the improved control strategy.
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Zou, Changyue, Bangyin Liu, Shanxu Duan, and Rui Li. "Stationary Frame Equivalent Model of Proportional-Integral Controller in dq Synchronous Frame." IEEE Transactions on Power Electronics 29, no. 9 (September 2014): 4461–65. http://dx.doi.org/10.1109/tpel.2013.2296789.

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Jiang, Baohong, and Xinian Li. "A Novel Fast Voltage Sequence Component Detector of Unbalanced Three-Phase System." MATEC Web of Conferences 173 (2018): 01036. http://dx.doi.org/10.1051/matecconf/201817301036.

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The fast and accurate voltage sequence component detection of unbalanced three-phase system is of major importance for the industrial continuous processing. The traditional method is to calculate the voltage in dq synchronous reference frame. This results in low order harmonics and long detection time. A novel fast voltage sequence components detector is proposed in this paper. It is to calculate the sequence component projection on dq rotating reference frame with h times the fundamental angular velocity. Simulation results demonstrate the validity of the algorithm.
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Li, Xiaobo, Mingxian Li, Hua Chai, and Binbing Wu. "Noise Immunity Analysis and Improvement of dq Frame Based Open-Loop Phase Detection Scheme." Energies 13, no. 5 (March 3, 2020): 1145. http://dx.doi.org/10.3390/en13051145.

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To improve the noise immunity of a dq frame based open-loop phase detection (OPD) under high-frequency noise grid conditions, this paper develops a detailed model to quantitatively evaluate the phase detection error and noise immunity. It is found that the OPD behaves differently in terms of noise immunity when the dq frame is in different angle positions with the grid voltage. When the grid voltage coincides with the d axis, the high-frequency noise has the smallest impact on the phase detection accuracy, and the OPD thus has the strongest noise immunity. Inspired by this conclusion, an improved OPD algorithm is proposed in this paper, which can effectively reduce the phase detection error by fine-tuning the rotation angle of the dq frame to ensure that the angle between the voltage vector and d axis is always close to 0. The improved OPD algorithm has a fast and precise character to detect the phase information with less error and is flexible for application. Under heavy noise grid conditions, it can also effectively shorten the dynamic response time in the phase-detecting process using a low-pass filter (LPF) with a higher cut-off frequency. The correctness of the noise immunity analysis and the effectiveness of the improved OPD algorithm are verified by the simulations and experimental results in MATLAB and RT-LAB.
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Costa, Israel D. L., Danilo I. Brandao, Lourenço Matakas Junior, Marcelo G. Simões, and Lenin M. F. Morais. "Analysis of Stationary- and Synchronous-Reference Frames for Three-Phase Three-Wire Grid-Connected Converter AC Current Regulators." Energies 14, no. 24 (December 10, 2021): 8348. http://dx.doi.org/10.3390/en14248348.

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The current state of the art shows that unbalance and distortion on the voltage waveforms at the terminals of a grid-connected inverter disturb its output currents. This paper compares AC linear current regulators for three-phase three-wire voltage source converters with three different reference frames, namely: (1) natural (abc), (2) orthogonal stationary (αβ), and (3) orthogonal synchronous (dq). The quantitative comparison analysis is based on mathematical models of grid disturbances using the impedance-based analysis, the computational effort assessment, as well as the steady-state and transient performance evaluation based on experimental results. The control scheme devised in the dq-frame has the highest computational effort and inferior performance under negative-sequence voltage disturbances, whereas it shows superior performance under positive-sequence voltages among the reference frames evaluated. In contrast, the stationary natural frame abc has the lowest computational effort due to its straightforward implementation, with similar results in terms of steady-state and transient behavior. The αβ-frame is an intermediate solution in terms of computational cost.
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Macana, Carlos A., Eduardo Mojica-Nava, Hemanshu R. Pota, Josep M. Guerrero, and Juan C. Vasquez. "A Novel Compact dq-Reference Frame Model for Inverter-Based Microgrids." Electronics 8, no. 11 (November 11, 2019): 1326. http://dx.doi.org/10.3390/electronics8111326.

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The development and the experimental validation of a novel dynamic model of an islanded three-phase Inverter-based Microgrid (IMG) is presented in this paper. The proposed model reproduces the relevant system dynamics without excessive complexity and enough accuracy. The dynamics of the IMG are captured with a compact and scalable dynamic model, considering inverter based distributed generators with d-current droop primary and proportional resonant inner controllers. The complete development of the model, the practical assumptions, and the accurate proportional power sharing of the primary control technique are shown. The accuracy performance was verified in experiments performed at the Aalborg Intelligent Microgrids Laboratory for an islanded IMG case.
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Moungkhum, Nopparat, and Wanchai Subsingha. "Voltage Control by DQ Frame Technique of SVPWM AC- DC Converter." Energy Procedia 34 (2013): 341–50. http://dx.doi.org/10.1016/j.egypro.2013.06.762.

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Poza, J., E. Oyarbide, D. Roye, and M. Rodriguez. "Unified reference frame dq model of the brushless doubly fed machine." IEE Proceedings - Electric Power Applications 153, no. 5 (2006): 726. http://dx.doi.org/10.1049/ip-epa:20050404.

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Abad, Gonzalo, Alain Sanchez-Ruiz, Juan José Valera-García, and Aritz Milikua. "Analysis and Design Guidelines for Current Control Loops of Grid-Connected Converters Based on Mathematical Models." Energies 13, no. 21 (November 9, 2020): 5849. http://dx.doi.org/10.3390/en13215849.

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Having a method for analyzing and designing regulators of controls that contain many current loops such as active filters is not a trivial task. There can be many parameters of regulators and filters that must be carefully selected in order to fulfill certain desired requirements. For instance, these can be stability, dynamic response, robustness under uncertainty of parameters, and rejection capability to switching harmonics. Hence, this paper provides general analysis guidelines for designing current control loops by using mathematical models in an αβ reference frame. Then, by using the proposed modeling tool, a multi-objective tuning algorithm is proposed that helps obtain all the control loops’ regulator and filter parameters, meeting all the desired requirements. Thus, the proposed analysis and design methodology is illustrated by applying it to three different controls conceived in a dq rotating reference frame with PI (Proportional Integral) regulators. The first control presents two current loops (simple dq current control), the second control uses four current loops (dual vector control, for unbalanced loads), while the third control presents eight current loops (active filter controlling current harmonics). Several experimental and simulation results show the effectiveness and usefulness of the proposed method. Since the mathematical model employed is in the αβ reference frame, it can also be easily applied to controls conceived in a αβ reference frame using resonant regulators, providing also a common comparative framework.
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Kumar, Mahender, M. A. Uqaili, Z. A. Memon, and Bhagwan Das. "Mathematical Modeling of THD Mitigation Using HAPF for UPS System with Experimental Analysis via Hybrid Interface of Optical USB and Power Quality Meter." Mathematical Problems in Engineering 2021 (September 29, 2021): 1–15. http://dx.doi.org/10.1155/2021/3981287.

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This paper discusses a novel analysis scheme based on the hybrid interface of Optical USB and Power Quality Meter for measuring Total Harmonic Distortion (THD) that exists in the Uninterruptable Power Supply (UPS) system and connected load. The designed hybrid interface experimentally analyzes the power quality and harmonics of the Uninterrupted Power Supply (UPS) system, and mitigation is proposed with the proposed Single-Phase Hybrid Active Power Filter (HAPF) based on instantaneous Power Theory (PQ) with hysteresis control technique and synchronous frame reference (DQ) with hysteresis control techniques at nonlinear load. This study authenticates and gives appropriate measurements in analyzing the harmonics and voltage distortion during conversion of power. The designed work offers the compensation and elimination of harmonic currents using PQ and DQ theory at different nonlinear loads. The proposed HAPF for the UPS system has demonstrated the significant reduction in THD using proposed Power Theory (PQ) with hysteresis control technique from 46.58% to 1.51% and by using DQ theory with hysteresis control technique has reduced THD from 46.58% to 1.38%. Finally, the results are compared between PQ and DQ. It is validated via results that DQ theory eliminated harmonics and also having less THD as compared to PQ-theory. Furthermore, one of the key aspects of the work is the analysis of power quality using Optical USB Interface (OC4USB) and FLUKE series power quality analyzer.
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Dissertations / Theses on the topic "Dq-frame"

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Roshan, Arman. "A Dq Rotating Frame Controller for Single Phase Full-Bridge Inverters Used in Small Distributed Generation Systems." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/33728.

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Today, small distributed power generation (DG) systems are becoming more common as the need for electric power increases. Small DG systems are usually built close to the end-user and they take advantage of using different energy sources such as wind and solar. A few examples are hybrid cars, solar houses, data centers, or hospitals in remote areas where providing clean, efficient and reliable electric power is critical to the loads. In such systems, the power is distributed from the source side to the load side via power electronic converters in the system. At low and medium power applications, the task is often left to single phase inverters where they are the only interface between sources connected to DC bus and loads connected to an AC bus. Much has been done for the control of single phase inverters in the past years; however, due to the requirements of stand alone systems and the time-varying nature of the converter, its controller design is still quite difficult, and especially so if its critical functionality within the system is taken into consideration. Part of the challenge is also due to the fact that the load is not known at all time, further complicating the controller design. This thesis proposes a different method of control for single phase inverters used in low and medium power DG systems. The new control method takes advantage of the well-known DQ transformation and analysis mostly employed for three phase convertersâ analysis and control design. Providing a time-invariant model of single phase inverters is the main feature of DQ transformation. In addition to that, control design of the inverter in DQ frame becomes similar to those of DC-DC and three phase converters making it easier to achieve superior performance under different operation conditions while achieving a robust controller. The transformation requires at least two independent phases for each state variable in the system; thus a second phase must be created. This thesis proposes the creation of an imaginary circuit based on the real circuit of the inverter to provide the second required phase for transformation. The state variables of the imaginary circuit are obtained by differentiating the state variables of the main inviterâ s circuit. The differentiation can be implemented in DSP so there is no need for additional hardware in the system, making it more attractive and cost effective method. The DQ controller not only provides superior transient response, it also provides zero steady-state error as well as low output voltage THD under nonlinear load operation. The entire controller can be implemented in a digital control board which is becoming more common in power electronics converters within the past decade. Analysis and design of a DQ controller for a 2.5kW single phase full-bridge inverter is presented in this study with the final results implemented in a FPGA/DSP based digital controller board.
Master of Science
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Husain, Tausif. "Rotating Reference Frame Control of Switched Reluctance Machines." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1375286539.

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Ladjavardi, Marjan. "Improving small signal stability of power systems in the presence of harmonics." Thesis, Curtin University, 2008. http://hdl.handle.net/20.500.11937/511.

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This thesis investigates the impact of harmonics as a power quality issue on the dynamic behaviour of the power systems. The effectiveness of the power system stabilizers in distorted conditions is also investigated. This thesis consists of three parts as follows:The first part focuses on the operation of the power system under distorted conditions. The conventional model of a synchronous generator in the dq-frame of reference is modified to include the impact of time and space harmonics. To do this, the synchronous generator is first modelled in the harmonic domain. This model helps in calculating the additional parts of the generator fundamental components due to the harmonics. Then the Park transformation is used for calculating the modified fundamental components of the synchronous generator in dq axes. The modified generator rotor angle due to the presence of harmonics is calculated and the impact of damper windings under the influence of harmonics is investigated. This model is used to study the small-signal stability of a distorted Single Machine Infinite Bus (SMIB) system. The eigenvalue analysis method is employed and the system state space equations are calculated by linearizing the differential equations around the operating point using an analytical method. The simulation results are presented for a distorted SMIB system under the influence of different harmonic levels. The impact of damper windings and also harmonics phase angles are also investigated.In the second part of the thesis, the effectiveness of the power system damping controllers under distorted conditions is studied. This investigation is done based on a distorted SMIB system installed with a Static Synchronous Series Compensator (SSSC). In the first step, the system state space equations are derived. A Power Oscillation Damping (POD) controller with a conventional structure is installed on the SSSC to improve the system dynamic behaviour. A genetic-fuzzy algorithm is proposed for tuning the POD parameters. This method along with the observability matrix is employed to design a POD controller under sinusoidal and distorted conditions. The impact of harmonics on the effectiveness of the POD controller under distorted conditions is investigated.In the last part, the steady state and dynamic operation of an actual distributed generation system under sinusoidal and distorted conditions are studied. A decoupled harmonic power flow program is employed for steady state analysis. The nonlinear loads are modelled as decoupled harmonic current sources and the nonlinear model of synchronous generator in harmonic domain is used to calculate the injected current harmonics. For the system dynamic stability study, the power system toolbox with the modified model of the synchronous generator is used. The system eigenvalues are calculated and the effectiveness of the installed Power System Stabilisers (PSS) is investigated under sinusoidal and distorted conditions. Simulation results show that in order to guarantee the effectiveness of a PSS in distorted conditions, it is necessary to consider the harmonics in tuning its parameters.
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Book chapters on the topic "Dq-frame"

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Katta, Pradeep, Arun, D. Atul Kumar Mishra, and H. Vignesh. "PID Control of SAPF for Elimination of Harmonics in Power System Based on DQ Reference Frame Theory." In Lecture Notes in Electrical Engineering, 679–87. New Delhi: Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2119-7_66.

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"Appendix B Analytical Background for Rotating DQ Frame." In High-Voltage Direct-Current Transmission, 388–98. Chichester, UK: John Wiley & Sons, Ltd, 2015. http://dx.doi.org/10.1002/9781118846704.app2.

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Taha, Hussein A., M. E. Ammar, and M. A. Moustafa Hassan. "Modeling, Analysis, of Induction Motor's Stator Turns Fault Using Neuro-Fuzzy." In Advances in Systems Analysis, Software Engineering, and High Performance Computing, 498–520. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-5788-4.ch020.

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This chapter discusses modeling and analysis methods for fault detection and diagnosis of stator inter-turn short circuit in three-phase induction machines. dq frame was used to model the induction motor for both health and fault cases to facilitate recognition of motor current and simulate motor environment. Fault diagnosis system was designed with adaptive neuro-fuzzy inference system (ANFIS) to provide an efficient online diagnostic tool. ANFIS diagnostic tool was trained with simulated data that generated by induction motor healthy and faulty models. Approached tool is verified online with a motor under different loading conditions. It determines the fault severity values using the motor current signature analysis (MCSA). Developed tool performance is investigated with a case study of two HP three-phase induction motor using Matlab/Simulink® software.
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Conference papers on the topic "Dq-frame"

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Sinha, Yashwant, and Ashok Nampally. "Averaged model of modular multilevel converter in rotating DQ frame." In 2016 IEEE International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, 2016. http://dx.doi.org/10.1109/icrera.2016.7884559.

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Vieto, Ignacio, and Jian Sun. "On system modeling and analysis using DQ-frame impedance models." In 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE, 2017. http://dx.doi.org/10.1109/compel.2017.8013378.

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Wang, Quansheng, Hua Ye, and Guomin Zhang. "Analysis of the circulating current characteristics of MMC in DQ frame." In 2017 IEEE Conference on Energy Internet and Energy System Integration (EI2). IEEE, 2017. http://dx.doi.org/10.1109/ei2.2017.8245582.

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Traore, D., J. De Leon, A. Glumineau, and L. Loron. "Interconnected observers for sensorless induction motor in dq frame: Experimental tests." In IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics. IEEE, 2006. http://dx.doi.org/10.1109/iecon.2006.347907.

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Peng, Ying, Kai Li, Jiancheng Zhao, and Chuan Xie. "Passivity Enhancement for Three-Phase Grid-Connected Inverter in dq-frame." In 2018 IEEE 4th Southern Power Electronics Conference (SPEC). IEEE, 2018. http://dx.doi.org/10.1109/spec.2018.8635954.

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Saritha, B., and P. A. Jankiraman. "Observer based current control of single-phase inverter in DQ rotating frame." In 2006 International Conference on Power Electronic, Drives and Energy Systems. IEEE, 2006. http://dx.doi.org/10.1109/pedes.2006.344427.

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Rasheduzzaman, Md, Poria Fajri, Jonathan W. Kimball, and Ainul Anam Shahjamal Khan. "Voltage Mode Control of Single-Phase Boost Inverter in $dq$ Reference Frame." In IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2018. http://dx.doi.org/10.1109/iecon.2018.8591695.

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Weixing Lin and D. Jovcic. "Modelling of VSC Converters in the Rotating dq Frame for DC Fault." In 11th IET International Conference on AC and DC Power Transmission. Institution of Engineering and Technology, 2015. http://dx.doi.org/10.1049/cp.2015.0014.

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Yao, Tong, Youyuan Jiang, and Raja Ayyanar. "Single phase DQ frame glover McFarlane H infinity robust droop controller design." In IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2014. http://dx.doi.org/10.1109/iecon.2014.7049257.

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Manrique Machado, Sebastian de J., Sergio Augusto Oliveira da Silva, Jose R. B. A. Monteiro, and Azauri A. de Oliveira. "Enhanced Space-State Reduced-Order Microgrid Model in Common DQ-Reference Frame." In 2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC). IEEE, 2019. http://dx.doi.org/10.1109/cobep/spec44138.2019.9065355.

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