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The.main types of wind turbines-generators in the power supply system
Published 2022-01-01“…The DC component of the primary current and the presence of residual magnetic induction of the current transformer provides the largest content of the magnetization current, the largest angular error and also the largest content of the second harmonic component in the secondary short-circuit current.…”
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Adaptive VSG Control Strategy of Sending End for Large-Scale Renewable Energy Connected to Weakly-Synchronized Support VSC-HVDC System
Published 2024-05-01“…Secondly, an improved virtual synchronous generator (VSG) control algorithm for constructing virtual reactance adaptive adjustment items using electrical quantities such as alternating voltage (AC) change rate and voltage difference is proposed, which can improve the equivalent short-circuit ratio of the AC system at the sending end while ensuring that the equivalent impedance of the system is inductive, so as to improve the overall performance of the system. …”
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A novel virtual inductor optimization methodology of virtual synchronous generators for enhanced power decoupling
Published 2025-04-01“…This model facilitates the analysis of power stability under different control parameters and resistance-to-inductive reactance ratios in the grid line. It enables the preliminary regulation of the system’s steady-state and dynamic characteristics. …”
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Sub-Synchronous Oscillation Phenomenon Analysis of Grid-Connected Direct Drive-Doubly Fed Hybrid Wind Farms via VSC-HVdc System
Published 2025-01-01“…When integrating offshore wind farms, comprising either direct-drive or doubly fed induction generators, into onshore power grids via voltage source converter-based high-voltage direct current (VSC-HVDC) transmission, subsynchronous oscillation (SSO) may occur, compromising system stability. …”
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Study on Impedance Characteristics of Aircraft Cables
Published 2016-01-01“…The changing trends of the four core parameters of interest are analyzed: resistance, inductance, reactance, and impedance. The research results can be used as reference for the applications in Variable Speed Variable Frequency (VSVF) aircraft electric power system.…”
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Modeling of an Electromagnetic Cannon using ATP-EMTP and ATPDraw
Published 2025-07-01“…Employing the Voltage Behind Reactance (VBR) methodology, each coil is modeled as a dynamic equivalent circuit comprising a resistance, an inductance, and an electromotive force source. …”
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Secondary-Side Switching Control for Efficient Constant-Current Dynamic Wireless Charging
Published 2025-01-01“…This paper presents a novel switching-based secondary-side control strategy for dynamic wireless electric vehicle (EV) charging, aimed at achieving precise constant current (CC) charging and optimizing system efficiency under varying mutual inductance conditions. By dynamically adjusting the conduction angle (ϕ) and phase shift (θ) of the semiactive rectifier, the proposed method effectively eliminates secondary-side reactance, ensuring stable power transfer and high energy efficiency. …”
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ANALYSIS OF APPLICABILITY OF EXTERNAL NETWORK SIMPLIFIED MODELS FOR DEFINITION OF SHORT CIRCUIT CURRENTS IN SYSTEMS OF RAILROAD TRACTION POWER SUPPLY
Published 2018-04-01“…For delimitation of simplified equivalent models applicability authors made comparative calculations of emergency operation by means of models constructed in phase coordinates and using external electric power supply equivalent reactances. Determination of SC currents in system of 27,5 kV tractive electric power supply of rather simple configuration is carried out in three options: on formulas of "Guide-line on relay protection of tractive electric supply ", on full-function estimated scheme of Fazonord complex considering wires capacity and inductive interferences and on specified analytical formula. …”
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Stability Analysis of the EFIE-IBC Formulation and Regularization via Spatial Filtering
Published 2025-01-01“…However, the standard Electric-Field Integral-Equation formulation of the IBC boundary-value problem (EFIE-IBC) has been shown to lead to numerical instabilities for some impedance ranges of practical interest, in particular inductive reactances. This contribution shows that the numerical instabilities are due to an intrinsic ill-conditioning of the EFIE-IBC operator for the concerned surface impedance values, that can degenerate into an ill-posedness that does not allow for definite solution. …”
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