Technical Electrodynamics最新文献_第6页

REDUCING THE COST OF IMBALANCES OF THE BALANCING GROUP OF PRODUCERS FROM RENEWABLE ENERGY SOURCES 降低可再生能源生产商平衡群体失衡的成本

Technical Electrodynamics Pub Date : 2023-01-09 DOI: 10.15407/techned2023.01.062

I. Blinov, V. Miroshnyk, S.S. Loskutov

引用次数: 0

STUDY OF THE ENERGY EFFICIENCY OF ELECTRO-MECHANICAL WATER SUPPLY SYSTEM OF A MULTI-STOREY BUILDING WITH TWO-LEVEL RISERS 双层立管多层建筑机电给水系统能效研究

Technical Electrodynamics Pub Date : 2023-01-09 DOI: 10.15407/techned2023.01.042

O. Popovych, R. Yashyn

引用次数: 0

DETERMINATION OF CONDITIONS FOR REDUCING ENERGY ACCUMULATION IN THE OUTPUT CIRCUITS OF POWER SOURCES OF POWERFUL GAS-DISCHARGE INSTALLATIONS 减少大功率气体放电装置电源输出电路中能量积累的条件的确定

Technical Electrodynamics Pub Date : 2023-01-09 DOI: 10.15407/techned2023.01.018

V. Martynov

{"title":"DETERMINATION OF CONDITIONS FOR REDUCING ENERGY ACCUMULATION IN THE OUTPUT CIRCUITS OF POWER SOURCES OF POWERFUL GAS-DISCHARGE INSTALLATIONS","authors":"V. Martynov","doi":"10.15407/techned2023.01.018","DOIUrl":"https://doi.org/10.15407/techned2023.01.018","url":null,"abstract":"The energy intensity of the output circuit of a high-voltage pulse source for a gas-discharge load is determined by the totality of energies accumulated in its reactive elements in operating or transient modes. During breakdowns in the output circuit of high-voltage power supplies, the accumulated energy can be released uncontrollably and lead to ele-ment failures or technological defects. The relationship between the magnitude of the output voltage ripple, the load resistance, the parameters of the inductive-capacitive output filter, the power of the power source and the frequency of its conversion has been established. Analytical expressions are obtained that make it possible to calculate the parame-ters of the output filter of a high-voltage powerful power supply based on the allowable energy that can accumulate in the output filter while providing allowable voltage ripples at the output of the converter. It has been established that the lower the attenuation coefficient of transient processes, the more energy must be accumulated in the filter elements to ensure the required quality of the output energy. On a calculated example of a power supply with a voltage of 30 kV, a power of 450 kW, a conversion frequency of 20 kHz and output ripples of less than 1%, it is shown that for implementa-tion without oscillatory transients with significant changes in load current, the energy intensity of the output filter can exceed 1 J/kW. With an increase in the equivalent conversion frequency, this indicator can be significantly reduced. References 13, figures 4.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45877133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

STABILITY ANALYSIS OF THE VOLTAGE STABILIZATION SYSTEM ON THE STORAGE CAPACITOR OF THE THREE-PHASE SHUNT ACTIVE FILTER 三相并联有源滤波器储能电容稳压系统的稳定性分析

Technical Electrodynamics Pub Date : 2023-01-09 DOI: 10.15407/techned2023.01.012

T. Mysak

{"title":"STABILITY ANALYSIS OF THE VOLTAGE STABILIZATION SYSTEM ON THE STORAGE CAPACITOR OF THE THREE-PHASE SHUNT ACTIVE FILTER","authors":"T. Mysak","doi":"10.15407/techned2023.01.012","DOIUrl":"https://doi.org/10.15407/techned2023.01.012","url":null,"abstract":"The object of the study is a three-phase shunt active power filter, which consists of a two-level voltage inverter, a capacitive storage device and a damping RL-link. Decomposition of the object of study according to the rate of motion of a dynamic system makes it possible to divide this system into two subsystems, interconnected by control. The influence of the dynamic characteristics of the low-pass filter, which acts as a subsystem of communication between the voltage stabilization circuit on the capacitor of the three-phase shunt active power filter and the circuits of compensating current, on the stability of the system is considered. The formation of the compensation current is carried out by forcing the introduction of sliding modes of the first order. The mathematical model of the voltage stabilization subsystem on the capacitor using the vector of the equivalent control under the assumption of the existence of a sliding mode in the formation of the compensation current was built. The analysis of the stability of the voltage stabilization system using a low-pass filter of the second order on the first approximation was performed. To do this, the characteristic equation of a closed system for which an interval characteristic polynomial was constructed, the Kharitonov theorem, and the Rauss-Hurwitz method for a family of these polynomials was used. To confirm the theoretical assumptions, a simulation model was built and the results of digital modeling were analyzed. References 9, figure 1.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47072480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SPECIFICATION OF DETERMINATION THE INDUCTION MOTOR TORQUE BY THE MAGNETIC CORE MODES IN THE SATURATED AREA 饱和区磁芯模式感应电动机转矩测定规范

Technical Electrodynamics Pub Date : 2022-10-27 DOI: 10.15407/techned2022.06.026

O. Popovych, І.V. Golovan

{"title":"SPECIFICATION OF DETERMINATION THE INDUCTION MOTOR TORQUE BY THE MAGNETIC CORE MODES IN THE SATURATED AREA","authors":"O. Popovych, І.V. Golovan","doi":"10.15407/techned2022.06.026","DOIUrl":"https://doi.org/10.15407/techned2022.06.026","url":null,"abstract":"The error value of the formula for calculating the electromagnetic moment under the assumption of equality of magnetic energies and coenergies has been investigated under the operation conditions of induction motor (IM) the magnetic core in the saturated region. For serial motors, under nominal conditions, the error does not exceed 5%, with a voltage increase of 75%, the error increases to 40%. The specified value of the electromagnetic moment is determined by calculating the value of the integral dependences of the magnetic coenergy on the angle of the rotor rotation in the process of calculating the dynamic mode of attenuation the currents in the windings. To improve the efficiency of refined calculation method of the electromagnetic moment, the dependence of the correction coefficient in the Magneto-Motive Forse (MMF) function of the motor is proposed for use. The use of this pre-determined dependence significantly speeds up refined calculations. The substantiation of the results reliability of the refined definition of electromagnetic moment without the assumption of the equality of magnetic energies and coenergies is carried out by comparing the results of the nominal operating modes caculation of serial motors with two and six poles, which have a significant difference in the degree of saturation. References 17, tables 2, figures 2.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48988620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

POWER COMPENSATION MODES RESEARCH IN GENERALIZED ELECTRICAL SUPPLY SYSTEM 广义供电系统功率补偿模式研究

Technical Electrodynamics Pub Date : 2022-10-27 DOI: 10.15407/techned2022.06.063

V. Yagup, K. Yagup

引用次数: 1

THE STUDY OF CONTROL PRINCIPLES OF THE SWITCHED RELUCTANCE PUMPING EQUIPMENT DRIVE WITH CYCLIC LOAD 循环负载下开关磁阻泵送设备驱动控制原理的研究

Technical Electrodynamics Pub Date : 2022-10-27 DOI: 10.15407/techned2022.06.036

L. Mazurenko, O. Bibik, M. Shykhnenko

{"title":"THE STUDY OF CONTROL PRINCIPLES OF THE SWITCHED RELUCTANCE PUMPING EQUIPMENT DRIVE WITH CYCLIC LOAD","authors":"L. Mazurenko, O. Bibik, M. Shykhnenko","doi":"10.15407/techned2022.06.036","DOIUrl":"https://doi.org/10.15407/techned2022.06.036","url":null,"abstract":"The electromechanical water supply system of a multi-storey building based on a switched reluctance motor is considered. A simulation model of the hydraulic network and criteria for evaluating the quasi-steady modes effectiveness of pumping equipment are given. A study of a centrifugal pump operational and energy characteristics has been carried out when adjusting its rotational speed to determine the frequencies at which the compliance of the pump pressure and flow with the hydraulic network requirements is ensured. Simulation models of control systems have been developed that provide the switched reluctance motor speeds at levels corresponding to specified flow rates of the hydraulic system pumping equipment, by means the phase voltage pulse-width regulation or the phase current limitation level adjustment. Comprehensive studies and comparative analysis of the switched reluctance centrifugal pump drive control principles were carried out according to the criteria for evaluating energy efficiency when regulating the rotational speed and changing the switching angles. As a result of this study, it was found that both pumping unit drive control principles provide its necessary productivity and are close in efficiency - a slightly higher efficiency can be achieved using the phase voltage pulse-width regulation of the switched reluctance motor with a changing the switching angles. References 10, figures 8.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47513402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A FOUR TERMINAL AXIAL-BISHIELDED NETWORKS 一种四端轴双屏蔽网络

Technical Electrodynamics Pub Date : 2022-10-27 DOI: 10.15407/techned2022.06.077

O. Mikhal

引用次数: 0

FEATURES OF TRANSIENTS IN SECOND-ORDER CIRCUITS WITH A NONLINEAR MODEL OF SPARK-EROSION LOAD UNDER CONDITIONS OF FORCED LIMITATION OF THEIR DURATION 二阶电路中瞬变的特征及其持续时间强制限制条件下的非线性火花侵蚀负载模型

Technical Electrodynamics Pub Date : 2022-10-27 DOI: 10.15407/techned2022.06.003

N. Shydlovska, S. Zakharchenko, O. Cherkaskyi

{"title":"FEATURES OF TRANSIENTS IN SECOND-ORDER CIRCUITS WITH A NONLINEAR MODEL OF SPARK-EROSION LOAD UNDER CONDITIONS OF FORCED LIMITATION OF THEIR DURATION","authors":"N. Shydlovska, S. Zakharchenko, O. Cherkaskyi","doi":"10.15407/techned2022.06.003","DOIUrl":"https://doi.org/10.15407/techned2022.06.003","url":null,"abstract":"In the Mathlab Simulink software environment a model of a second-order discharge-pulse system with a nonlinear de-scription of the equivalent electrical resistance of a spark-erosion load was created. Under conditions of forced limita-tion of the duration of discharge pulses for a series of values of the inductance and capacitance of the discharge circuit, as well as the initial conditions in them, transients in the system are calculated. In groups of modes with fixed values of the initial voltage on the working capacitor and in groups of modes with fixed values of voltage amplitude of the free discharges on load, the dependences on duration of the discharge pulses of their energy, pulse power in the load, and the rate of its change are plotted and analyzed. It is shown that in both groups of modes for each set of parameter val-ues of: the duration of the discharge pulses, the capacitance of the working capacitor and the initial voltage on it, there is a value of the inductance of the discharge circuit, which provides the highest values of the rate of change of the pulse power in the load. In the groups of modes with fixed values of the voltage amplitude of free discharges on the load, for the set of parameters described above, there are also values of the discharge circuit inductance that provide the highest values of energy and pulse power in the load. For three values of the inductance of the discharge circuit, the problems of increasing the above pulse parameters are graphically solved. References 27, figures 11.","PeriodicalId":38557,"journal":{"name":"Technical Electrodynamics","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44388989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ANALYSIS OF TRANSIENT PROCESSES DURING ENERGISATION OF THE AC OVERHED TRANSMITION LINE IN THE HIBRID POWER SYSTEMS HIBRID电力系统交流架空输电线路通电过程的瞬态分析

Technical Electrodynamics Pub Date : 2022-10-27 DOI: 10.15407/techned2022.06.058

O.G. Shpolianskii

引用次数: 0