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Influence of Conductor Arrangement and Termination Loads on Modal Redundancy Efficiency in a Four-Conductor Modal Filter

Influence of Conductor Arrangement and Termination Loads on ...

引用

2024 International Russian Automation Conference, RusAutoCon 2024

作者： Lakoza, Alexandr M. Kosteletskii, Valerii P. Chernikova, Evgeniya B. Tomsk State University of Control Systems and Radioelectronics Dept. of Microwave and Quantum Radio Engineering Tomsk Russia

This paper presents the results of analyzing a four-conductor modal filter under trapezoidal noise influence on the time response at the device output. Thus, the use of matched terminations loads at the ends of far conductors allows to obtain 2.5% lower amplitudes at the output of the device relative to closely located ones. For the case of closely spaced conductors, the smallest amplitudes at the device output are observed with a combination of short circuit terminations loads at the far end and open circuit at the near end. Such allows to obtain up to 36.5% lower amplitudes relative to the far ones. Using the outer conductors as active conductors further reduces the amplitudes at the output of the device by up to 16.8 per cent percent. The terminations loads of conductors located through the air gap have no effect on the signal amplitude at the output of the protective device. © 2024 IEEE.

关键词： Signal interference

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Method for Improving the Performance of Operational Amplifier with HA2700 Microchip Architecture

Method for Improving the Performance of Operational Amplifie...

引用

2024 International Conference on Electrical engineering and Photonics, EExPolytech 2024

作者： Kuznetsov, Dmitry V. Titov, Alexey E. Sergeenko, Marsel A. Prokopenko, Nikolay N. Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia Southern Federal University Dept. of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia

ISBN: (纸本)9798350388879

A circuit technique for increasing the maximum output voltage slew rate (SR) of an integrated operational amplifier (OpAmp) with the HA2700 microchip architecture based on the modernization of the input differential stage (DS) is considered. An OpAmp architecture is proposed in which the influence of parasitic capacitances of DS reference current sources and capacitances on the transistor substrate on the SR is minimized. This allows the use of micron technological processes in the fabrication of CBJT OpAmps, which are widely used to improve the radiation resistance of microchips. Computer simulation of the proposed OpAmp is performed, which shows that the SR of the new circuit differs from the SR of the well-known serial OpAmp by more than 40 times and reaches values of about 800 V/μs at the emitter current of the input transistors of the DC in the range of up to 80-100 μA. The developed OpAmp is recommended for practical use in discrete-to-analog filters on switched capacitors. © 2024 IEEE.

关键词： Operational amplifiers

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Influence of Cross-Section Geometrical Parameters on the Structures Characteristics Protecting in Differential and Common Modes 3

Influence of Cross-Section Geometrical Parameters on the Str...

引用

3rd IEEE International Conference on Problems of Informatics, Electronics and Radio engineering, PIERE 2024

ISBN: (纸本)9798331516321

The paper presents an analysis of the influence of the geometrical parameters of the cross-section on the characteristics of protection devices operating in differential and common modes. A protection device is defined as a structure comprising 6- and 8-conductor structures with inhomogeneous dielectric filling, connected in such a way that protection is provided in two modes. The study presents the dependencies of attenuation coefficients in differential and common modes, per-unit-delay delays and time intervals between decomposition pulses on parameter variations. It was found that the combined thickness of the dielectric substrate and the width of the conductors has the greatest influence on the attenuation coefficients in differential and common modes. Furthermore, the dielectric thickness has a significant impact on the time intervals and per-unit-length delays. The analysis of the obtained data enabled the key parameters of the investigated cross-sections and their ranges to be determined, which will inform further optimization. © 2024 IEEE.

关键词： Geometry

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Evaluation of the Efficiency of Conductor Placement Under Different Types of Pulse Interference in Differential and Common Modes

Evaluation of the Efficiency of Conductor Placement Under Di...

引用

2024 International Conference on Industrial engineering, Applications and Manufacturing, ICIEAM 2024

作者： Lakoza, Alexandr M. Kosteletskii, Valerii P. Tomsk State University Of Control Systems And Radioelectronics Dept. Of Microwave And Quantum Radio Engineering Tomsk Russia

ISBN: (纸本)9798350395013

This paper investigates of the efficiency of using different ways of placing conductors with identical and unequal characteristics before and after switching under different types of pulse disturbances in differential and common modes of influence, obtained on the example of a four-wire modal filter (MF). The results show that the location of the main and redundant conductors in the MF and the type of the interfering signal significantly affect its efficiency. When a digitized interference signal C9-11 is used, an increase in the amplitude at the output of the structure is observed for two configurations in common (by 11.3% and 10.4%, respectively) and one in differential modes (by 18.7%). However, when a bipolar pulse is used, amplitude changes are observed for only one configuration, in differential mode (2.4 % increase). U sing the conductor configurations discussed above can help account for channel degradation due to aging or component wear, allowing prediction of performance degradation in different modes of operation. Switching to the appropriate configuration at the right time allows the performance changes to be compensated for. © 2024 IEEE.

关键词： Efficiency

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Circuit Design Method of Rate Increase in Operational Amplifiers Based on the MH2XA031 Array Chip and CBJT Technological Routes

Circuit Design Method of Rate Increase in Operational Amplif...

引用

2024 Conference of Young Researchers in Electrical and Electronic engineering, ElCon 2024

作者： Titov, Alexey E. Kleimenkin, Dmitriy V. Prokopenko, Nikolay N. Southern Federal University Dept. of Automatic Control Systems Rostov-on-Don Russia Don State Technical University Dept. of Scientific Research Dept. of Information Systems and Radio Engineering Rostov-on-Don Russia

ISBN: (纸本)9798350360646

It has been revealed that in the conditions of small-scale production of discrete-analog filters on switched capacitors and ADC-drivers, it is most advisable to design high-speed operational amplifiers (OAs) based on the CBJT technological route and the MH2XA031 array chip, which allows operation in conditions of low temperatures and exposure to radiation. It has been established that most commercially produced O A s provide an average value of the slew rate (SR, up to 200 div 300 ~V / μ s). This is largely due to the limitations of the technologies used, and most importantly, to the irrational design of circuits. We study the maximum performance parameters of a CBJT OA with one integrating capacitor, which ensures the stability of the O A, and a differentiating transient correction circuit, which is implemented by connecting additional small capacitors to the original circuit. In this case, the S R of the O A increases by more than 500 times (up to 4000 ~V / μ s). © 2024 IEEE.

关键词： array chip CBJT operational amplifier slew rate

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INTERNALIZING PUMPED STORAGE HYDROPOWER LOSSES INTO THE ELECTRICITY MARKET 23

INTERNALIZING PUMPED STORAGE HYDROPOWER LOSSES INTO THE ELEC...

引用

23rd Wind and Solar Integration Workshop, WIW 2024

作者： Minotsu, Shinichiro Baba, Jumpei Dept. of Electrical Engineering and Information Systems Graduate School of Engineering Tokyo Japan Dept. of Advanced Energy Graduate School of Frontier Sciences The University of Tokyo Tokyo Japan

ISBN: (纸本)9781837242689

Demand for point-to-point power transfer services is expected to increase with the integration of variable renewable energy sources and the retirement of conventional thermal power generation. Storage batteries and pumped storage hydropower plants have the advantage of being able to provide power transport services with absorption of surplus power, which is not possible with conventional thermal power. One major problem is that pumped storage hydropower plants may not recover the costs necessary to compensate for the pumping losses that occur during time-to-time power transport. This problem does not occur with power transport services that transmit power from point-to-point. This paper proposes a formulation for pumped storage hydropower plants and a procedure for calculating power market prices to internalize pumping losses into the power market. The annual total revenue of pumped storage hydropower plants is compared based on the conventional marginal price by point and the market price calculated by the proposed method. The results show that the proposed method partially integrates the value of time transportation of pumped storage hydropower plants into the electricity market. © Energynautics GmbH.

关键词： Pumped storage power plants

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Indoor Occupancy Estimation Based on Synergy of Physical Modeling, Environmental Data Fusion, and Machine Learning Frameworks 11

Indoor Occupancy Estimation Based on Synergy of Physical Mod...

引用

11th International Conference on Electrical, Electronic and Computing engineering, IcETRAN 2024

作者： Popović, Ivan Krčmar, Igor Rakić, Aleksandar University of Belgrade School of Electrical Engineering Dept. of Electronics Belgrade Serbia University of Banja Luka Faculty of Electrical Engineering Dept. of Control Systems Banja Luka Bosnia and Herzegovina University of Belgrade School of Electrical Engineering Dept. of Signals and Systems Belgrade Serbia

ISBN: (纸本)9798350386998

In a modern society, driven by both economic interests and a concern for personal privacy, indoor occupancy, either at workspace or in other type of accommodation, became a matter of stressed research interest. Though various methodologies have been developed so far, the proposed solutions of a technical problem of occupancy estimation still suffer from narrow perspectives and partial solutions, usually formulated as an optimization of a chosen mathematized problem. This paper considers the broader context of the problem, particularly its physical background, basic assumptions for the effective use of the environmental variables in occupancy estimations and the viable frameworks, either conventional or modern machine learning ones, that are to meet those assumptions. The approach is experimentally verified in a case study. © 2024 IEEE.

关键词： Adversarial machine learning

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Assessing Uncertainty in Space Weather Forecasting Using Quantile Regression and Complex Nonlinear systems Identification Techniques 6

Assessing Uncertainty in Space Weather Forecasting Using Qua...

引用

6th International Conference on Computing, Electronics and Communications engineering, iCCECE 2023

作者： Wei, Hua-Liang Balikhin, Michael A. Boynton, Richard J. Walker, Simon N. The University of Sheffield Dept. of Automatic Control and Systems Engineering Sheffield United Kingdom

ISBN: (纸本)9798350340921

Space weather forecasting is of global interest, and its importance is well established in research community and recognized by government, industries and stockholders. Over the past years, many types of predictive models have been developed in the literature. There is a general agreement that forecasting models should not only provide point prediction but also inform the uncertainty associated with the prediction. This study presents a novel method bases on quantile regression and complex dynamic modelling for measuring uncertainties in space weather forecasting. The approach is implemented using Quantile regression and Nonlinear AutoRegressive Moving Average with Exogenous inputs (NARMAX) methods (for short the approach is called Q-NARMAX). The method is applied to Disturbance storm index (Dst) observations to examine its interpretability and capability for uncertainty analysis. Results show that the proposed Q-NARX model can produce excellent predictions of the Dst index, and meanwhile provides a measure for assessing the uncertainty in the forecast. The innovative integration of quantile regression, complex dynamic modelling and nonlinear system identification techniques enables the proposed work to have following attractive advantages and properties: 1) it can produce excellent prediction accuracy for space weather forecasting, 2) it uses transparent models to approximate (represent) black-box systems, enabling to interpret the dependent relationship between space weather indices (system outputs) and their drivers (system inputs), and 3) more importantly, it allows for uncertainty assessment and analysis of models and forecasts. © 2023 IEEE.

关键词： Uncertainty analysis

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Filtering in Projection-based Integrators for Improved Phase Characteristics 63

Filtering in Projection-based Integrators for Improved Phase...

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63rd IEEE Conference on Decision and control, CDC 2024

作者： Chu, Hoang Van Den Eijnden, S.J.A.M. Heertjes, M.F. Heemels, W.P.M.H. Eindhoven University of Technology Control Systems Technology Section Dept. Mechanical Engineering Netherlands Asml Mechatronics & Measurements Systems Veldhoven Netherlands

ISBN: (纸本)9798350316339

Projection-based integrators are effectively employed in high-precision systems with growing industrial success. By utilizing a projection operator, the resulting projection-based integrator keeps its input-output pair within a designated sector set, leading to unique freedom in control design that can be directly translated into performance benefits. This paper aims to enhance projection-based integrators by incorporating well-crafted linear filters directly into its structure, resulting in a new class of projected integrators that includes the earlier ones, such as the hybrid-integrator gain systems (HIGS), as special cases. The extra design freedom in the form of two filters in the input paths to the projection operator and the internal dynamics allows the controller to break away from the inherent limitations of a linear control design. The enhanced performance properties of the proposed structure are formally demonstrated through i) a describing function analysis, ii) mitigation of the gain-loss problem (occurring in, e.g., HIGS), and iii) numerical case studies showcasing improved time-domain properties. The describing function analysis is supported by rigorously showing incremental properties of the new filtered projection-based integrators, thereby guaranteeing the steady-state responses to be unique and asymptotically stable. © 2024 IEEE.

关键词： Describing functions

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Improvement of Corrective Agents Dispensing control systems for Thermal Power Plants

Improvement of Corrective Agents Dispensing Control Systems ...

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2024 International Ural Conference on Electrical Power engineering, UralCon 2024

作者： Merzlikina, Elena Lozbicheva, Polina Sydykov, Aktan National Research University Dept. of Automated Control Systems for Thermal Power Plants Moscow Power Engineering Institute Moscow Russia National Research University Dept. of Atuomated Control Systems for Thermal Power Plants Moscow Power Engineering Institute Moscow Russia

ISBN: (纸本)9798350386028

The paper is devoted to corrective agents dispensing control systems for thermal power plants, namely, hydrazine dispensing control system and phosphates dispensing control system. The systems mentioned are single-loop systems with PI-algorithms and they do not work efficiently enough now. Traditional variants of these system and their improvements earlier offered are described. Some new improvements, are offered and analyzed. They are prediction module using and control algorithm tuning parameters optimization. The prediction module uses the linear prediction algorithm. The transient processes and Nyquist curves for the control systems are given and analyzed. The quality indexes for the control systems are calculated. All the calculations are based on experimental data given in the papers already published. © 2024 IEEE.

关键词： Predictive control systems

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