SovietRxiv · Open Access in English
Rediscovering the Soviet scientific archive, in English
25357 full-text translations 14926 English PDFs 22539 abstracts
Showing 50 of 25357 papers
This paper examines design parameters and operating modes of three winding autotransformers, including block step-up units, step-up units with medium-voltage primaries, and step-down units with high-voltage primaries. Using approximate formulas based on equal current density, it derives winding curr…
This paper develops a method for calculating instantaneous currents in the circuits of an electrostatic generator with conveyor conductors operating under short-circuit conditions. Treating the generator as a quasistatic system with lumped, time-dependent capacitance parameters, the authors separate…
This paper examines the long-term stability of the output voltage and current of a compact self-excited electrostatic generator intended for continuous operation under active loads. Experimental specimens with modified rotor, stator, and collector arrangements were tested for periods from several ho…
This paper addresses the calculation of electric field strengths in the rotor, stator gap of a direct current capacitive generator, where dielectric strength is especially critical for reliable high voltage operation. Using previously obtained approximate potential functions based on variational fie…
This paper examines how vacuum level affects dielectric strength and breakdown behavior in the gaps of an electrostatic generator intended for high-vacuum operation, motivated by the limitations of compressed-gas generator enclosures and the needs of spacecraft power sources. Using an experimental g…
This paper investigates a compact electrostatic generator designed without rotating parts, using a movable and a fixed plate housed in a small glass cylinder. The authors derive estimates for deposited charge, charging capacitance, and load voltage, then compare these calculations with experimental …
This paper describes a compact electrostatic high-voltage source intended for operation in deep vacuum, motivated by the need for reliable electrical supplies for studies and devices associated with space-flight conditions. The proposed generator replaces rotating mechanisms with an oscillating capa…
This paper addresses the calculation of current and voltage harmonics in ferromagnetic voltage converters used in relay protection, where nonsinusoidal currents and voltages arise especially under asymmetrical network faults. It applies the point transformation method to the nonlinear differential e…
This paper develops an approximate analytical method for calculating the stator component of the electric field in a capacitive electrostatic generator with a dielectric rotor. The field in the generator working volume is formulated as a Dirichlet problem for Laplace’s equation with prescribed stato…
This paper examines control circuits for stabilized secondary power supplies of nonstandard frequency using autonomous inverters with duration control. It compares two structural approaches to pulse-width regulation, emphasizing the problem of output-pulse asymmetry in circuits with two comparison c…
This paper examines how the wholesale prices of semiconductor elements used in static converters depend on their main rated parameters, voltage and current. Using price list data, the authors fit separate power function correlation relationships for several device types and assess them by mean appro…
The paper examines quasi-steady operating modes of an induction motor fed by a static inverter whose output voltage is nonsinusoidal, with particular attention to pulse-width modulation. It formulates phase and line voltages through inverter switching functions and uses the generalized voltage vecto…
This paper develops an interpolation based framework for analyzing linear time varying dynamic systems described by differential equations with variable coefficients. The method represents input and output signals as vectors of values at interpolation nodes, uses exponential Chebyshev polynomials to…
The paper presents a standard program for the Minsk-1 computer intended to assess the existence and strength of a stochastic relationship between two random variables from a correlation table of paired observations. It describes the computation of empirical regression lines in both directions, initi…
This paper presents a computational procedure for finding all roots of a polynomial of degree up to 20 with complex coefficients on the Minsk-1 computer. It formulates root finding as minimization of the modulus of the polynomial and applies a steepest descent iteration, supplemented by a circular s…
This paper addresses the limited program memory of the Promin digital computer and proposes a hardware scheme for operating with two program matrices while preserving logical control transfers between them. The method uses the state of trigger T9 to select the active matrix, controls interrogation p…
The article presents a method for organizing the execution of a software system whose components are more naturally represented as an acyclic directed graph than as a linear program sequence, particularly in planning and control applications. It defines a hierarchical notation for program graphs, su…
This paper addresses operational scheduling for a stamping section within an automated enterprise management system, where shop-level plans must be refined to part-operation schedules. It formulates the problem for groups of interchangeable presses processing batches according to known technological…
This paper addresses the need for computer generation of large random graphs to support testing, simulation, and evaluation of graph-analysis programs, especially in scheduling, network planning, transportation, and automated control applications. It argues that random network generators can help de…
The paper addresses the problem of converting and merging graph representations used in network models for automated management systems, where algorithms may require direct mappings, inverse mappings, or arc lists. It formulates the more general task of stitching several product network graphs into …
This paper describes the design and operation of ASUP-Tomsk, an automated enterprise management system intended for large-batch, batch, and small-batch production. The authors present its principal planning and control functions and formulate operational calendar planning through a network productio…
This paper investigates the dynamics of an induction motor supplied by a rectangular voltage waveform, representing operation from a frequency converter with a 180 degree conduction angle. Using an MN-14 analog computer and a flux-linkage differential-equation model in stationary stator coordinates,…
This paper examines methods for compensating load reactive energy in voltage inverters and their influence on voltage regulation, current continuity, and harmonic content. Using an idealized single-phase inverter model with individual commutation and feedback diodes, the authors derive limiting cond…
This paper compares two methods for compensating load reactive energy in current-forming inverters that reproduce a sinusoidal load current within a specified error band. Using simplifying circuit assumptions, linearized sinusoidal and exponential approximations, and elementary-function fitting, it …
This paper compares the energy performance of thyristor switches with controlled rectifiers having the same number of controlled valves, for single-phase and three-phase rectifier circuits. Under idealized assumptions of instantaneous commutation, smoothed load current, and a lossless transformer, i…
This paper analyzes the operation of a three-phase synchronous reluctance motor connected to a single-phase supply through a star-connected stator winding and series capacitor. Using symmetrical components and equivalent circuits for positive and negative sequence synchronous operation, it derives e…
This paper describes a thyristor independent inverter with an autonomous commutation unit intended to supply synchronous reluctance motor drives requiring accurate frequency and voltage regulation. The proposed circuit uses a quartz-controlled frequency source, pulse-width stabilization of the outpu…
This paper addresses the difficulty of argon arc welding thin light alloy sheets with a nonconsumable electrode on alternating current, where low currents cause arc instability, oxide film disruption is inadequate, and higher continuous heat input leads to burn-through and distortion. It presents a …
This paper examines pulse control of slip in wound-rotor induction motors using additional resistances in either the direct-current or alternating-current rotor circuit. It derives expressions for rotor-current pulsation coefficients as functions of commutation timing, circuit time constants, slip, …
This paper presents a control system for regenerative braking of the ER-22 direct-current electric train with uncompensated traction motors operating from an unstable contact network. The authors formulate braking control from the commutation constraint of constant maximum interlamellar emf and a su…
This paper examines relay automatic control systems for regulating starting and braking currents in DC series-wound traction motors, addressing limitations caused by sensor speed and hysteresis in comparison devices. It describes systems using thyristor switching, a saturable multivibrator current s…
This paper examines electromagnetic transients in a relay automatic current control system for a series-excitation traction motor when supply voltage suddenly disappears and is restored during starting-current regulation. The authors formulate nonlinear armature and magnetizing-circuit equations tha…
This paper analyzes energy losses in a limited-power DC source supplying multiple identical active-inductive loads controlled by pulse-width modulation through either synchronous or phase-shifted power switches. Under idealized assumptions for switches, diodes, load currents, and battery resistance,…
This paper analyzes commutation processes in a pulsed thyristor DC converter whose commutating inductance is a saturating choke on a core with a rectangular hysteresis loop. Using an equivalent commutation circuit and simplifying assumptions for saturated and unsaturated core states, the authors der…
The paper addresses the problem of inertia and voltage ripple in arc-power control devices for electric arc steelmaking furnaces, especially when conventional regulators are replaced by faster actuator drives and thyristor amplifiers. It analyzes the limitations of existing rectified power-setpoint …
This paper evaluates the economic efficiency of introducing the AZAT-2 automated two-channel unit for charging automobile storage batteries at a motor-transport enterprise, using existing VSA-5 rectifier installations as the comparison baseline. The authors calculate changes in charging-cycle durati…
This paper describes the development and implementation of the AZAT-2 automated two-channel unit for charging automotive lead-acid batteries at large motor-transport enterprises. It addresses shortcomings of existing group charging rectifiers, including low productivity, bulk, unreliability, and ins…
This paper describes an 80 kVA static three-phase stabilized DC voltage source developed for electrolytic heating baths, intended to replace motor-generator power supplies that are bulky, inefficient, and difficult to protect under unstable loads. The source uses a transformer regulated by magnetic-…
This paper addresses the design of high-power, low-voltage transformers regulated by premagnetization of a magnetic shunt, intended for industrial installations requiring voltage regulation, load matching, and galvanic isolation. It develops a calculation procedure for determining transformer geomet…
This paper compares design variants of single-phase transformers regulated by shunt magnetization for use in automatic installations, emphasizing weight, volume, and manufacturability criteria that earlier comparisons treated less fully. The authors develop a unified geometric method for estimating …
This paper analyzes discrete control of semiconductor and ferromagnetic voltage regulators without DC biasing, focusing on a switching method in which the control winding is short-circuited at the beginning of each period for no more than a half-period. Using idealized magnetic and circuit assumptio…
This paper analyzes ferromagnetic biased devices, such as magnetic amplifiers and biased transformers, controlled by narrow unipolar voltage pulses from a class D semiconductor intermediate amplifier. Using equivalent circuits, superposition, and simplified limiting assumptions, it derives current w…
This article addresses the practical difficulty of recording spark and arc discharge voltages at the trailing edge of brushes in commutator electric machines using the established method with an auxiliary measuring brush. It proposes a contactless alternative in which a capacitive sensor, mounted ne…
This paper analyzes reactive inductive-capacitive circuits that are dual to Boucherot converters, intended to transform a current source into a voltage source. Using phasor relations and vector diagrams, the authors derive expressions for two single-phase converter variants and show that, under the …
This paper examines electromechanical transients in low-speed synchronous reluctance motors, focusing on starting, pull-in to synchronism, and operating stability under parameter and load disturbances. Because the governing equations are nonlinear when rotor speed varies, the authors formulate the m…
This paper analyzes how the relative inductances of armature reaction and leakage affect a synchronous reluctance machine supplied at variable frequency, taking account of armature resistance. Using a modified equivalent circuit and relative machine characteristics, the authors derive expressions fo…
This article proposes a modified procedure for accelerated durability testing of winding insulation in stators and armatures of electrical machines. The method introduces test conductors or turns made from the same winding wire and placed in the winding sections before assembly, so that turn-to-turn…
The paper presents a probabilistic method for estimating the reliability of insulation in random-wound windings of general-purpose induction motors during the running-in period and early normal operation. It models turn, ground, and phase-to-phase insulation failures as functions of technological de…
This paper investigates switching overvoltages that arise in the windings of low-voltage asynchronous motors during switching-on, with attention to their possible role in revealing or causing insulation defects. The authors measure overvoltage pulses on motors of several frame sizes and pole numbers…
The paper addresses reliability estimation for low-voltage induction motors with random-wound windings, focusing on winding insulation as the dominant source of electrical-machine failures. It argues that insulation reliability can be evaluated through theoretical probabilistic methods based on the …
