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Journal articles on the topic 'Active compensation'

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Author: Grafiati

Published: 14 March 2023

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1

Ginn, Herbert L., and Guangda Chen. "Flexible Active Compensator Control for Variable Compensation Objectives." IEEE Transactions on Power Electronics 23, no. 6 (November 2008): 2931–41. http://dx.doi.org/10.1109/tpel.2008.2005385.

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2

Tępiński, Jarosław. "Converter Compensation of Reactive Power Consumed by the Induction Generato." Safety & Fire Technology 57, no. 1 (2021): 64–79. http://dx.doi.org/10.12845/sft.57.1.2021.5.

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Purpose: The purpose of the article is to present a reactive power compensation for small hydropower plants with an induction generator. The classic compensation with capacitors is discussed and its improvement is proposed. Instead of capacitors, a three level power electronic converter connected in parallel to the induction generator can be used to provide reactive power compensation. The purpose of the paper is to present the developed structure of an active compensator and its control method. The developed control method was verified on a laboratory stand. The project and the methods: As part of research, an active compensator was built as a three-level power electronic converter in topology with Neutral Point Clamped. Laboratory tests of a converter compensator were carried out on a stand equipped with an induction generator with a power of 7.5 kW. Laboratory system measurements were made using a power analyzer and an oscilloscope. Results: A control structure of an active compensator based on a voltage-oriented method was presented and discussed. The operation of the con- verter compensator has been verified on a laboratory stand equipped with a 7.5 kW induction generator. The compensator current reduces the reactive (inductive) component of the current consumed from a power grid to a value equal to zero. The reactive power compensator ensures that the tgφ power factor is maintained at a set value of zero, which corresponds to the total compensation of inductive reactive power consumed by an induction generator working in a hydropower plant. Operation of the active compensator did not cause a significant increase in the harmonic content in the current consumed from the power grid. Conclusions: The paper presents the issues regarding reactive power compensation in hydropower plants with induction generators. Commonly used capacitor compensation has been covered and as a result, it is proposed to replace it with power electronics converter compensation of reactive power connected in parallel induction generators. Active compensator provides compensation for the entire reactive power consumed by the induction generator. The use of the converter compensator of reactive power significantly contributes to the reduction of costs for reactive power incurred by the owners of hydropower plants. The reactive power compensator also has a positive impact on the operation of the entire power grid, power losses from the reactive component of the current on the impedances of power grid components are limited. Keywords: renewable source of electricity, reactive power, active compensator, induction generator Type of article: original scientific article

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3

Fatyga, Karol, and Dariusz Zieliński. "Sensorless Current Pulsation Compensation in a Hybrid Energy Storage." Applied Sciences 13, no. 4 (February 9, 2023): 2252. http://dx.doi.org/10.3390/app13042252.

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This paper presents a dual active bridge DC/DC converter used as an AC current compensator in a hybrid energy storage application. The AC current in the DC link appears when a three-phase, four-wire inverter operates with unbalanced output currents—for example, when trying to compensate for grid voltage unbalance. This AC current has adverse effects on the operation of the electrochemical energy storage, and it should be compensated. To achieve this, a compensator is introduced into the DC link circuit of the inverter—a DC/DC converter with a capacitor bank. The DC/DC converter is responsible for compensating the AC pulsation by creating its own pulsation with the opposite phase. In the paper, the genesis of this pulsation is explained, and a compensation circuit is proposed along with a sensorless compensation algorithm. The algorithm is based on symmetrical decomposition and is used to generate a reference signal for the compensator. The numerical analysis of the algorithm is presented, and the operation of the compensator is verified on the laboratory bench.

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Wang, Dazhi, Tianqing Yuan, Xingyu Wang, Xinghua Wang, and Wenhui Li. "A Composite Vectors Modulation Strategy for PMSM DTC Systems." Energies 11, no. 10 (October 12, 2018): 2729. http://dx.doi.org/10.3390/en11102729.

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The operation performance of permanent magnet synchronous motors (PMSMs) driven by direct torque control (DTC) are affected by torque error compensation and flux error compensation in each control period. The error compensational effects provided by different vectors under different control strategies are analyzed in this paper. The precondition of accurate error compensation is applied to the proposed novel composite vectors modulation strategy (CVM) for a PMSM DTC system. In CVM-DTC, the operating conditions of PMSM are divided into three cases according to the relationships between the errors and the actual error compensations, including steady-state case, dynamic-state case, and transient-state case. In order to establish the novel CVM-DTC strategy smoothly, the effect factors are introduced and used to represent the error compensational effects, which are obtained through the proposed effect factors’ controller. The analysis of error compensational effects provided by single active vector and synthetic voltage vector are described in detail while the PMSM is operated in different operation conditions. Finally, the effectiveness of the novel CVM-DTC strategy is verified through the experimental results in a 100-W PMSM drive system.

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5

Mullen, Anne. "Passive consumption or active compensation." Nature Food 3, no. 5 (May 2022): 305. http://dx.doi.org/10.1038/s43016-022-00528-5.

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6

Makris, C. A., and C. Toumazou. "Current-mode active compensation techniques." Electronics Letters 26, no. 21 (1990): 1792. http://dx.doi.org/10.1049/el:19901148.

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7

Brecher, C., D. Manoharan, and W. Klein. "Active compensation for portal machines." Production Engineering 4, no. 2-3 (March 6, 2010): 255–60. http://dx.doi.org/10.1007/s11740-010-0212-y.

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8

Demirdelen, T., R. I. Kayaalp, and M. Tumay. "A Modular Cascaded Multilevel Inverter Based Shunt Hybrid Active Power Filter for Selective Harmonic and Reactive Power Compensation Under Distorted/Unbalanced Grid Voltage Conditions." Engineering, Technology & Applied Science Research 6, no. 5 (October 23, 2016): 1133–38. http://dx.doi.org/10.48084/etasr.777.

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In recent years, shunt hybrid active power filters are being increasingly considered as a viable alternative to both passive filters and active power filters for compensating harmonics. In literature, their applications are restricted to balanced systems and low voltage applications and therefore not for industrial applications. This paper investigates the performance of a modular cascaded multilevel inverter based Shunt Hybrid Active Power Filter (SHAPF) for reactive power compensation and selective harmonics elimination under distorted/unbalanced grid voltage conditions in medium voltage levels. In the proposed control method, reactive power compensation is achieved successfully with a perceptible amount and the performance results of harmonic compensation are satisfactory. Theoretical analysis and simulation results are obtained from an actual industrial network model in PSCAD. The simulation results are presented for a proposed system in order to demonstrate that the harmonic compensation performance meets the IEEE-519 standard.

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9

Ma, You Jie, Min Pan, and Xue Song Zhou. "Overview on Control Methods of Active Power Filter." Advanced Materials Research 749 (August 2013): 610–13. http://dx.doi.org/10.4028/www.scientific.net/amr.749.610.

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With the wide application of power electronic devices, especially the use of non-linear device, a large number of harmonics and reactive current injected into the grid, which will cause power grid pollution, and the power quality problems have become increasingly serious .Active Power Filter (APF) is an important device for the power system harmonics and reactive power compensating. The real-time control and accuracy is a key to achieving effective compensation. Several suitable for active power filters basic principle of the compensation current control strategy is introduced in this paper, the paper carries on the contrast analysis, and points out the advantages and disadvantages of each, The development of the control strategy of the active filter can achieve a better performance and a wider range of application.

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10

Liu, Nixuan, Siqi Cao, and Juntao Fei. "Fractional-Order PID Controller for Active Power Filter Using Active Disturbance Rejection Control." Mathematical Problems in Engineering 2019 (July 1, 2019): 1–10. http://dx.doi.org/10.1155/2019/6907570.

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This paper proposed a fractional-order PID controller and active disturbance rejection control (ADRC) method for the current compensation of active power filter (APF). The control method consists of two closed loops. One is a reference current tracking loop based on the ADRC controller, which can treat the internal and external uncertainties of the system as a whole. The other is the voltage control loop with the fractional-order PID controller for more flexibility. Simulation results demonstrate that the proposed control method has a stronger robustness and higher compensating precision comparing with the double-loop PID control method.

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11

Dobrucky, Branislav, Slavomir Kascak, Michal Frivaldsky, and Michal Prazenica. "Determination and Compensation of Non-Active Torques for Parallel HEV Using PMSM/IM Motor(s)." Energies 14, no. 10 (May 12, 2021): 2781. http://dx.doi.org/10.3390/en14102781.

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The paper deals with the determination and compensation of non-active torques of parallel HEV using an auxiliary electrical PMSM or IM motor. The non-active oscillating torque generating by the ICE engine was estimated, and consequently, the compensating torque component of the current was determined. Based on real measured data, the four regimes of operation have been investigated: compensating non-active torques, parallel operation, regenerating for PMSM, and both parallel operations, together with compensation. Using of p-q theory, the power of fundamental harmonic is presented by average values PAV, QAV of total power waveforms p(t), and q(t). Worked-out simulation results are used for sizing and dimensioning of PMSM machine, VSI inverter, and traction accumulator-battery. Circuit simulator Matlab/Simulink was used for all simulation experiments.

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12

Wang, Guo, Ming Xing Tian, En En Ren, and Li Na Ding. "Comprehensive Analysis of Active Electrified Railway Compensation." Advanced Materials Research 204-210 (February 2011): 1675–78. http://dx.doi.org/10.4028/www.scientific.net/amr.204-210.1675.

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Traction load in electrified railway result in the power supply system contains a lot of negative sequence, harmonic and reactive current. It is necessary to analysis the compensation principle based on active compensation of electrified railway traction power supply system. According to the relation between primary winding and secondary winding of regular traction transformer, we deduced general voltage and general current transform formula, and then deduced completely and negative sequence compensation formulas. It also gives the method of reduce active compensation capacity.

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13

Takeda, Kazuyuki, Yutaka Tabuchi, Makoto Negoro, and Masahiro Kitagawa. "Active compensation of rf-pulse transients." Journal of Magnetic Resonance 197, no. 2 (April 2009): 242–44. http://dx.doi.org/10.1016/j.jmr.2008.12.012.

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14

Wilson, G. "Compensation improvements in RC-active integrators." IEE Proceedings G Circuits, Devices and Systems 136, no. 1 (1989): 1. http://dx.doi.org/10.1049/ip-g-2.1989.0001.

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15

Baydur, Ahmet, Catherine S. H. Sassoon, and Claire M. Stiles. "Active Inspiratory Impedance and Load Compensation." Anesthesia & Analgesia 65, no. 1 (January 1986): 1???8. http://dx.doi.org/10.1213/00000539-198601000-00001.

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16

Li, Jia-Wang, Tong Ge, and Xu-Yang Wang. "Active Heave Compensation Control of ROVS." Asian Journal of Control 15, no. 2 (July 17, 2012): 543–52. http://dx.doi.org/10.1002/asjc.575.

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17

Lauria, D., and E. Tironi. "Some considerations on active compensation devices." European Transactions on Electrical Power 3, no. 3 (September 7, 2007): 235–40. http://dx.doi.org/10.1002/etep.4450030307.

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18

Sun, Qiuye, Jianguo Zhou, Xinrui Liu, and Jun Yang. "A Novel Load-Balancing Method and Device by Intelligent Grouping Compound Switches-Based Capacitor Banks Shunt Compensation." Mathematical Problems in Engineering 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/347361.

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A novel compensator topology is proposed for three-phase unbalanced loads in the distribution networks. The negative and zero sequence compensation networks are proposed using delta-connected and star-connected capacitor banks. The compensation networks are paralleled with the unbalanced load to achieve a perfect balancing of active power and a complete compensation of reactive power of the unbalanced load. Intelligent grouping compound switches are implemented to control the capacitors, where, therefore, each capacitor can be switched between phases or phase and ground. Wireless sensors are also applied to acquire the load quantities. The compensation method proposed is based on symmetrical component theory. In addition, the load compensation based on instantaneous symmetrical component theory with positive sequence online extraction is proposed under unbalanced and distorted source voltages. The proposed load-balancing method and device are applied to Liaoning, Neimenggu, and Jilin provinces. The application results are provided to validate the performance of the proposed compensator topology and compensation method.

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19

Li, Shengwen, Xiao Chang, Haoqing Wang, Ning Liu, Yizhao Liu, Yang Yang, and Qing Duan. "Dynamic Voltage Restorer Based on Integrated Energy Optimal Compensation." Electronics 12, no. 3 (January 19, 2023): 531. http://dx.doi.org/10.3390/electronics12030531.

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This paper presents an advanced dynamic voltage restorer with integrated energy optimal compensation (EOC-DVR), which combines the advantages of pre-sag compensation and energy minimization compensation. The performance parameters of the EOC-DVR, such as the compensatory capability, loss of energy, and duration of compensation, can be balanced by this optimal compensation strategy. Additionally, the impact on the load is further reduced by the proposed method. By analyzing the working process of optimal comprehensive energy, the compensation limit of the strategy is discussed. After that, both the voltage and active power of the system for compensating are obtained by analyzing the compensation characteristics of the strategy. Therefore, the relations of the formula and curve between the related physical quantities can be obtained. Finally, simulation results based on MATLAB/Simulink are provided to verify the effectiveness of proposed compensation method.

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20

Song, Ming Zhen, and Zhi Bin Chen. "Fuzzy Recursive Integral PI Control for Three-Phase Four-Wire Shunt Active Power Filter." Applied Mechanics and Materials 494-495 (February 2014): 1414–17. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.1414.

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This paper focuses on the current tracking control of three-phase four-wire active power filter (APF). The conventional PI control method usually causes a large deviation of the harmonic compensational current, and results in a slow response, which means that harmonic compensational performance under the conventional PI control is not ideal. In order to improve the compensation performance and the dynamic response speed of APF, the authors present a new control strategy by integrating the parameters online tuning of fuzzy adaptive with the recursive integral PI control algorithm. New algorithm takes full advantages of the characteristic of integrating the deviation of each sample-point of the recursive integral PI control and the adaptive merits of the parameters online tuning algorithm. The simulation experiments indicate that the control algorithm is feasible and can effectively improve the harmonic compensation performance of active power filter.

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21

Zhu, Xue Ling, Wen Si Cao, and Xiao Ming Zhou. "Research on Methods of Reactive Compensation for Unbalanced Current in Three-Phase Four-Wire Low-Voltage Distribution System." Advanced Materials Research 347-353 (October 2011): 1156–60. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1156.

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Different condition of unbalanced current of three-phase four-wire low-voltage distribution system is analysed in this paper. The model of unbalanced reactive power compensation is built which is fit for the three-phase four-wire system ,Using phase-to-phase or phase-to-earth capacitance or inductance can transfer active power. Control the neutral current to be zero and three-phase current balanced by means of reactive power compensation. A compensating phase judgment approach is presented, the mathematic model of calculating phase current, phase compensating capacity line current and line-to-line compensating capacity is gave. Simulation result of physical system shows that the neutral current can be controlled to be zero and the phase current balanced. It substantiate that this compensation method is valid and optimize the operation condition of loads.

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22

Hassan, Zahid, and Gagan Deep Yadav. "Reactive Power Compensation and Limiting Harmonic Current using Shunt Active Power Filter." International Journal of Trend in Scientific Research and Development Volume-2, Issue-4 (June 30, 2018): 50–54. http://dx.doi.org/10.31142/ijtsrd12958.

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23

Ji, Ling. "Design of Active Filter Based on the Active Power Balance." Applied Mechanics and Materials 596 (July 2014): 709–12. http://dx.doi.org/10.4028/www.scientific.net/amm.596.709.

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In order to eliminate harmonics generated by the power electronic devices, from a functional point of view the amount of the balance, the use of filters to supply current and DC voltage is sampled in a controlled manner to achieve harmonic compensation, the establishment of a single-phase active power filter the control system of the model and the theoretical analysis of the program by Saber simulation software has been validated in simulation, based on a prototype developed, according to the single-phase shunt active filter to achieve our scheme can effectively harmonic compensation for pollution caused by the rectifier with inductive load, simulation and experimental results show that this method can be controlled harmonic distortion at 5.8%.

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24

Peng, F. Z., Masakazu Kohata, and Hirofumi Akagi. "Compensation Characteristics of Shunt Active and Series Active Power Filters." IEEJ Transactions on Industry Applications 113, no. 1 (1993): 33–40. http://dx.doi.org/10.1541/ieejias.113.33.

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25

Peng, F. Z., Masakazu Kohata, and Hirofumi Akagi. "Compensation characteristics of shunt active and series active power filters." Electrical Engineering in Japan 114, no. 2 (1994): 104–13. http://dx.doi.org/10.1002/eej.4391140210.

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26

Morais, Vítor A., João L. Afonso, Adriano S. Carvalho, and António P. Martins. "New Reactive Power Compensation Strategies for Railway Infrastructure Capacity Increasing." Energies 13, no. 17 (August 25, 2020): 4379. http://dx.doi.org/10.3390/en13174379.

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In AC railway electrification systems, the impact of reactive power flow in the feeding voltage magnitude is one aspect contributing to the quality of supply degradation. Specifically, this issue results in limitations in the infrastructure capacity, either in the maximum number of trains and in maximum train power. In this paper, two reactive power compensation strategies are presented and compared, in terms of the theoretical railway infrastructure capacity. The first strategy considers a static VAR compensator, located in the neutral zone and compensating the substation reactive power, achieving a maximum capacity increase up to 50% without depending on each train active power. The second strategy adapts each train reactive power, achieving also a capacity increase around 50%, only with an increase of the train apparent power below 10%. With a smart metering infrastructure, the implementation of such compensation strategy is viable, satisfying the requirements of real-time knowledge of the railway electrification system state. Specifically, the usage of droop curves to adapt in real time the compensation scheme can bring the operation closer to optimality. Thus, the quality of supply and the infrastructure capacity can be increased with a mobile reactive power compensation scheme, based on a smart metering framework.

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27

Mustafa, Mohammed Obaid, and Najimaldin M. Abbas. "Harmonic suppression compensation of photovoltaic generation using cascaded active power filter." Eastern-European Journal of Enterprise Technologies 6, no. 8 (114) (December 24, 2021): 60–68. http://dx.doi.org/10.15587/1729-4061.2021.248276.

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The wide spectrum of electromagnetism that explains current and voltage at specific time and location in a power system is referred to as power quality. Alternative energies are becoming more popular due to concerns about power quality, safety, and the environment, as well as commercial incentives. Moreover, photovoltaic (PV) energy is one of the most well-known renewable resources since it is free to gather, unlimited, and considerably cleaner. Active power filter (APF) is an effective means to dynamically suppress harmonics and solve power quality problems caused by the DC side voltage fluctuation. Therefore, this paper describes a substantial advancement in the harmonic suppression compensation algorithm, as well as the cascaded active power filter. Also, this paper focuses on compensating the error of photovoltaic grid-connected generation based on optimized H-bridge cascaded APF. The details of the working principle and topological structure of the APF used as the compensation device are analyzed. The H-bridge cascaded APF is optimized using the segmented variable step-length conductance increment (SVSLCI) algorithm. The overall cascaded APF control strategy is designed and simulated using MatLab/Simulink environment. By the simulation results comparing the existing traction network power quality control measures, before and after compensation, the effectiveness of the proposed control strategy is verified. The proposed controller strengthens the compensation of specific odd harmonics to improve the system work models and criteria to improve power quality. Moreover, the proposed algorithm showed positive significance for optimizing the quality of photovoltaic grid-connected power, reducing the current harmonic, and improving the equipment utilization of photovoltaic inverters.

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28

Wang, Congsi, Haihua Li, Kang Ying, Qian Xu, Na Wang, Baoyan Duan, Wei Gao, Lan Xiao, and Yuhu Duan. "Active Surface Compensation for Large Radio Telescope Antennas." International Journal of Antennas and Propagation 2018 (2018): 1–17. http://dx.doi.org/10.1155/2018/3903412.

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With the development of radio telescope antennas with large apertures, high gain, and wide frequency bands, compensation methods, such as mechanical or electronic compensation, are obviously essential to ensure the electrical performance of antennas that work in complex environments. Since traditional compensation methods can only adjust antenna pointing but not the surface accuracy, which are limited for obtaining high surface precision and aperture efficiency, active surface adjustment has become an indispensable tool in this field. Therefore, the development process of electrical performance compensation methods for radio telescope antennas is introduced. Further, a series of analyses of the five key technologies of active surface adjustment is presented. Then, four typical large antennas that have been designed with active main reflector technology are presented and compared. Finally, future research directions and suggestions for reflector antenna compensation methods based on active surface adjustment are presented.

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29

Wei, Kunlin, Tjeerd M. H. Dijkstra, and Dagmar Sternad. "Stability and Variability: Indicators for Passive Stability and Active Control in a Rhythmic Task." Journal of Neurophysiology 99, no. 6 (June 2008): 3027–41. http://dx.doi.org/10.1152/jn.01367.2007.

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Using a rhythmic task where human subjects bounced a ball with a handheld racket, fine-grained analyses of stability and variability extricated contributions from open-loop control, noise strength, and active error compensation. Based on stability analyses of a stochastic-deterministic model of the task—a surface contacting the ball by periodic movements—open-loop or dynamic stability was assessed by the acceleration of the racket at contact. Autocovariance analyses of model and data were further used to gauge the contributions of open-loop stability and noise strength. Variability and regression analyses estimated active error compensation. Empirical results demonstrated that experienced actors exploited open-loop stability more than novices, had lower noise strength, and applied more active error compensations. By manipulating the model parameter coefficient of restitution, task stability was varied and showed that actors graded these three components as a function of task stability. It is concluded that actors tune into task stability when stability is high but use more active compensation when stability is reduced. Implications for the neural underpinnings for passive stability and active control are discussed. Further, results showed that stability and variability are not simply the inverse of each other but contain more quantitative information when combined with model analyses.

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30

Sun, Yan Ping, Mo Zhou, and Guo Wang. "Study on a Novel Three-Phase Two-Leg Active Inverter for Electrified Railway." Applied Mechanics and Materials 734 (February 2015): 868–72. http://dx.doi.org/10.4028/www.scientific.net/amm.734.868.

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A novel topology circuit of active compensation was discussed to be used to manage negative sequence caused by locomotive load in electrified railway. The main circuit used a three-phase two-leg compensator as active elements of shunt hybrid active compensator topology. The number of switch device in this topology was reduced by comparing with three-phase full-bridge active inverter and the cost was lower. The simulation model was developed with SIMULINK. The simulating results indicates that the shunt hybrid active compensator can restrain the problem of negative sequence which generated by locomotive load, and reduces the effect of reactive power, negative sequence, improves electric energy quality and verifies the correctness of the proposed structure and control method.

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31

Freitas, Stefani, Luis Carlos Oliveira, Priscila Oliveira, Bruno Exposto, José Gabriel Pinto, and Joao L. Afonso. "New Topology of a Hybrid, Three-Phase, Four-Wire Shunt Active Power Filter." Energies 16, no. 3 (January 30, 2023): 1384. http://dx.doi.org/10.3390/en16031384.

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With a view to reducing harmonic content in electrical power systems, and, consequently, improving power quality level, filters and other harmonic compensation devices are widely used. In the category of filters, they can be distinguished into two classes that are related to the operating mode, active or passive, both widely known and applied in electrical power grids and in the most diverse industry sectors. In this sense, taking into account the use of compensating devices in four-wire electrical systems feeding single-phase, non-linear loads, this paper presents a new hybrid arrangement of harmonic compensation that incorporates both active and passive filtering, which performs all functions concerning the harmonic compensation of a four-leg shunt active power filter. In this hybrid arrangement, the harmonic filtering of positive and negative sequence components is performed by a three-leg shunt active power filter, while the filtering of zero-sequence harmonics is attributed to the electromagnetic zero-sequence suppressor. The results, which confirm the effectiveness of the proposed hybrid arrangement, are proven through simulations and experimental tests in different operating scenarios, revealing a substantial improvement in the system’s power factor, as well as a reduction in harmonic distortions.

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32

Yao, Xin, Zai Lin Yao, and Xin Ying Teng. "Based on Delay Compensation System for Shunt Active Power Filter Research." Advanced Materials Research 860-863 (December 2013): 2050–53. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2050.

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APF harmonic detection is the study of the most important parts of the core , quickly and accurately detect the harmonic current is able to quickly output harmonic compensation circuit current of the premise. Delay compensation system is based on the increase in the method specified time compensation angle , which can accurately detect the harmonic current at the same time , the low-pass filter to minimize the time delay generated by MATLAB simulation, the use of delay compensation system active Filter harmonic Detection and Compensation excellent performance, while ensuring high precision detection and compensation while ensuring at the same time , and fully complete filter real-time functionality .

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33

Chandra, B. Vijay, SK Jani Basha, SK Abdul Rasool, P. Hari Krishna, R. Veda Kumar, Ch Srinivas, K. SowjanKumar, and G. V. K. Murthy. "Hybrid Active Power Filter for Power Quality Improvement." International Journal of Innovative Research in Computer Science & Technology 10, no. 4 (July 27, 2022): 222–28. http://dx.doi.org/10.55524/ijircst.2022.10.4.28.

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A Deadbeat current controller for an LC-coupling hybrid active power filter is proposed, which can track with the reference compensation current with low steady- state error and fast dynamic response. Moreover, it can lead Hybrid Active power Filter to be operating at a fixed switching frequency with low output current ripples, thus reducing the size of the filtering circuit. The stability issue and parameter design of the proposed deadbeat current controller are analyzed and discussed. Finally, the compensating performance of the deadbeat current controller for the Hybrid Active Power Filter (LC-HAPF) is verified by simulation compared with the conventional hysteresis bandwidth modulation control, the proportional-integral (PI) control, and the proportional multi-resonant control for the LC-HAPF, which shows its effectiveness and superior compensating performances.

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34

Zhang Fan, 张帆, 侯冬 Hou Dong, 郭海鹏 Guo Haipeng, 赵建业 Zhao Jianye, and 张志刚 Zhang Zhigang. "Timing Delay Jitter Compensation of a Fiber Link with Active Delay Compensation." Acta Optica Sinica 30, no. 3 (2010): 671–75. http://dx.doi.org/10.3788/aos20103003.0671.

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35

Silva, Sérgio Augusto Oliveira da, Pedro F. Donoso-Garcia, Porfírio C. Cortizo, and Paulo F. Seixas. "A line-interactive UPS system implementation with series-parallel active power-line conditioning for three-phase, four-wire systems." Sba: Controle & Automação Sociedade Brasileira de Automatica 16, no. 2 (June 2005): 200–210. http://dx.doi.org/10.1590/s0103-17592005000200008.

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This paper presents a three-phase line-interactive uninterruptible power supply (UPS) system with active series-parallel power-line conditioning capabilities. Synchronous reference frame (SRF)-based controller is used for harmonic and reactive power compensation generated from any configuration of non-linear loads. Under normal line conditions the UPS system works with universal filtering capabilities, such as compensating the input currents and output voltages. Two three-phase pulsewidth modulation (PWM) converters, called series and parallel active filters, are used to perform the series and parallel active power-line compensation. The series active filter works as sinusoidal current source in phase with the input voltage, drawing from utility sinusoidal and balanced input currents with low total harmonic distortion (THD). The parallel active filter works as sinusoidal voltage source in phase with the input voltage, providing regulated and sinusoidal output voltages with low THD. The performance of the UPS system is evaluated in three-phase, four-wire systems. Experimental results are presented to confirm the theoretical studies.

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Wu, Yan Juan, and Lin Chuan Li. "Improving Active Output Capacity of Large-Scale Wind Farm by Installation STATCOM." Advanced Materials Research 588-589 (November 2012): 574–77. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.574.

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Some faults will result wind turbine generators off-grid due to low grid voltage , furthermore, large-scale wind farms tripping can result in severe system oscillation and aggravate system transient instability . In view of this, static compensator (STATCOM) is installed in the grid containing large-scale wind farm. A voltage feedforward control strategy is proposed to adjust the reactive power of STATCOM compensation and ensure that the grid voltage is quickly restored to a safe range. The mathematical model of the doubly-fed induction wind generator (DFIG) is proposed. The control strategy of DFIG uses PI control for rotor angular velocity and active power. 4-machine system simulation results show that the STATCOM reactive power compensation significantly improve output active power of large-scale wind farm satisfying transient stability, reduce the probability of the tripping, and improve the utilization efficiency of wind farms.

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37

Do, Cuong, and Ashwin A. Seshia. "Active Temperature Compensation for MEMS Capacitive Sensor." IEEE Sensors Journal 21, no. 17 (September 1, 2021): 18588–92. http://dx.doi.org/10.1109/jsen.2021.3089056.

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White, G. C., and Yangsheng Xu. "An active vertical-direction gravity compensation system." IEEE Transactions on Instrumentation and Measurement 43, no. 6 (1994): 786–92. http://dx.doi.org/10.1109/19.368066.

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Frechin, M. M., S. B. Ariño, and J. Fontaine. "ACTISEAT: Active vehicle seat for acceleration compensation." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 218, no. 9 (September 2004): 925–33. http://dx.doi.org/10.1243/0954407041856809.

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Ramos-Carranza, Hugo A., Aurelio Medina, and Gary W. Chang. "Real-Time Shunt Active Power Filter Compensation." IEEE Transactions on Power Delivery 23, no. 4 (October 2008): 2623–25. http://dx.doi.org/10.1109/tpwrd.2008.2002836.

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Park, Tae-Jun, Gang-Youl Jeong, and Bong-Hwan Kwon. "Shunt active filter for reactive power compensation." International Journal of Electronics 88, no. 12 (December 2001): 1257–69. http://dx.doi.org/10.1080/00207210110092735.

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Levitas, M., D. A. Horton, and T. C. Cheston. "Practical failure compensation in active phased arrays." IEEE Transactions on Antennas and Propagation 47, no. 3 (March 1999): 524–35. http://dx.doi.org/10.1109/8.768788.

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Ogonowski, Zbigniew. "Sound reflex compensation in active noise control." Journal of the Acoustical Society of America 105, no. 2 (February 1999): 1302. http://dx.doi.org/10.1121/1.424834.

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Nam, Yoonsu, and Sung Kyung Hong. "Active stick control using frictional torque compensation." Sensors and Actuators A: Physical 117, no. 2 (January 2005): 194–202. http://dx.doi.org/10.1016/j.sna.2004.06.018.

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Raparelli, Terenziano, Vladimir Viktorov, Federico Colombo, and Luigi Lentini. "Aerostatic thrust bearings active compensation: Critical review." Precision Engineering 44 (April 2016): 1–12. http://dx.doi.org/10.1016/j.precisioneng.2015.11.002.

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Cavallini, A., and G. C. Montanari. "Compensation strategies for shunt active-filter control." IEEE Transactions on Power Electronics 9, no. 6 (November 1994): 587–93. http://dx.doi.org/10.1109/63.334773.

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CIEPLIŃSKI, ŁUKASZ. "Three-Phase UPS with Active Parallel Compensation." ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA 1, no. 11 (November 5, 2018): 6–9. http://dx.doi.org/10.15199/13.2018.11.1.

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Rossi, S., S. Gazzellini, M. Petrarca, F. Patanè, I. Salfa, E. Castelli, and P. Cappa. "Compensation to whole body active rotation perturbation." Gait & Posture 39, no. 1 (January 2014): 621–24. http://dx.doi.org/10.1016/j.gaitpost.2013.06.018.

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Cok, Ronald S., and Felipe Leon. "P-180: Active Compensation for OLED Aging." SID Symposium Digest of Technical Papers 37, no. 1 (2006): 905. http://dx.doi.org/10.1889/1.2433667.

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Koch, T., and R. Alferness. "Dispersion compensation by active predistorted signal synthesis." Journal of Lightwave Technology 3, no. 4 (1985): 800–805. http://dx.doi.org/10.1109/jlt.1985.1074271.

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