Cyclostationary Analysis of Electric Power in a Resonant Circuit under Periodic Excitation

Guschina, Oksana

doi:10.1109/ieeeconf53456.2022.9744264

Cited by 9 publications

(4 citation statements)

References 31 publications

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“…The diagram proposed by Potier, which includes both voltages and MMF, fully describes the spatio-temporal and cause-and-effect interaction of magnetic and electrical parameters of the electric machine. Voltages and currents are recorded in effective (RMS) values [7]. The voltage is phase to neutral, the full armature current flows through the phase of the armature winding (AW) and through the load connected to the machine terminals (for the generator) or the power supply (for the motor).…”

Section: The Main Parameters Of Phasor Diagrammentioning

confidence: 99%

“…Analytical methods were algorithmized with the development of computer technologies, and as a result, computer software for automated calculation was developed. As an example of a perspective technique, one can consider a recently developed approach to power analysis [6,7] which is exploiting cyclostationary properties [8,9] of voltage and current signals. Such an approach can mitigate the arbitrary periodic excitation which may be chosen as a possible way to further improve the tool presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

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The Phasor Diagram of a Superconducting Synchronous Electrical Machine

Ilyasov

2023

Inventions

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This paper describes a universal method proposed by the author for the evaluative analytical calculation of the main parameters of synchronous electrical machines, including superconducting ones. Traditional methods for analytical calculation of parameters to build a phasor diagram of electrical machines require a calculation of all dimensions of the active zone, tooth-slot zone and frontal parts of armature windings. All sizes and local states of magnetic circuit saturation are necessary for the calculation of magnetic conductivities. Traditional analytical methods use, among other things, empirical formulas and non-physical coefficients and allow one to calculate only standard machines with classic tooth-slot zones and armature winding types. As a result of drawing a phasor diagram using traditional methods, the angle between the electromotive force and voltage is calculated, which is the machine’s internal parameter and has no major significance for users. The application of modern computer programs for simulation requires a preliminary analytical calculation in order to obtain all dimensions of the three-dimensional model. FEM simulation programs are expensive, require expensive high-performance computers and highly paid skilled personnel. Fast analytical techniques are also required to assess the correctness of the obtained automatic computer simulation results. The proposed analytical method makes it possible to quickly obtain all the main parameters of a newly designed machine (including superconducting ones and those of non-traditional design) without a detailed calculation of the dimensions of the tooth-slot zone and armature end-windings. The characteristic values of load angles are set according to the results of simple calculations, and the desired values, obtained via plotting, represent the inductive resistances of armature winding and inductive voltage drop across it. Results of practical significance, calculated from the voltage diagram, are as follows: the inductor’s magnetomotive force necessary to maintain the nominal load voltage value, regardless of the magnitude (including double overload) and type of the connected load, or the main dimensions of the active zone.

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Section: The Main Parameters Of Phasor Diagrammentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Phasor Diagram of a Superconducting Synchronous Electrical Machine

Ilyasov

2023

Inventions

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“…The time series {r d [t ]} can be treated as an implementation of a certain random process quantified by the driver's ratings r d [t ] generated by a hidden probabilistic mechanism. In this study, we do not make assumptions on the nature of the process under consideration, in particular regarding its stationary or a more complex non-stationary behavior [11,12] RN means a novice's rating during the adaptation period;…”

Section: Rating System Modelmentioning

confidence: 99%

Development of a rating system assessing the quality of the service provided by drivers in a taxi aggregator company

Shevgunov¹,

Vavilova²,

Kravchenko³

et al. 2022

Bus. Inform.

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This paper deals with the problem of quantitative description and improvement of the quality of the service provided by taxi aggregator companies working on the Russian market. This problem seems to be insufficiently addressed in open research publications due to its high specificity, though some research aiming at searching the quality metrics have been conducted for some companies worldwide. The goal of the current research is mathematical formalization of a rating system assessing the driver service quality that allows one to design a parametrically tunable model. The proposed mathematical model of the rating system is described by means of a state graph where the transition from a vertex to another happens when the explicitly written conditions are satisfied. We show that the rating evaluation for a driver remaining in the active can be carried out by means of linear filtration performed as digital signal processing of the time series consisting of the scores which are given to the driver by their passengers. The type and waveform of the filter impulse response is suggested.

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“…Currently, antenna arrays with digital beamforming are increasingly used in radio systems for various purposes [49][50][51]. There are obvious advances in the theory of digital signal processing (DSP) [52,53], as well as in the production of modern circuit components [54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Development of the Phaseless Calibration Algorithm for a Digital Antenna Array

Dobychina,

Snastin,

Savchenko

et al. 2023

Inventions

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In this paper, we will discuss a calibration algorithm for a digital antenna array that diagnoses its real performance. It can be applied at such stages of the antenna system life cycle as design, tuning, and especially maintenance. A calibration implementation using a scalar method for a multi-beam digital antenna array is proposed and investigated. On-the-fly calibration ensures a continuous improvement in beam pointing accuracy by reducing internal errors in the receiving (transmitting) channels. The purpose of the study is to experimentally examine the capabilities of digital beamforming to increase the angle-of-arrival estimation accuracy. A simulation model of the receiving antenna was created in an anechoic chamber with a planar antenna positioner. The possibility of precise estimation of the direction of arrival using the digital beamforming with electronic scanning was demonstrated. The proposed simulation model made it possible to observe the convergence of the antenna array calibration process using the proposed method for various errors in the signal paths, as well as different signal-to-noise ratios. It has been proven that even under adverse conditions early in the calibration algorithm, the phase error detection converges with high accuracy, and its value decreases uniformly even to the fractions of an angular degree.

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Cyclostationary Analysis of Electric Power in a Resonant Circuit under Periodic Excitation

Cited by 9 publications

References 31 publications

The Phasor Diagram of a Superconducting Synchronous Electrical Machine

The Phasor Diagram of a Superconducting Synchronous Electrical Machine

Development of a rating system assessing the quality of the service provided by drivers in a taxi aggregator company

Development of the Phaseless Calibration Algorithm for a Digital Antenna Array

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