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In this paper three supplementary Sub-synchronous damping controllers (SSDC) are proposed for damping out sub-synchronous torsional oscillations in power system with capacitor compensated transmission line. Capacitor compensation has widely been used as a very valuable way of escalating the power transfer capability and improving stability of power systems. Capacitor compensation in long transmission...
The sudden change in loads cause power system parameters such as voltage, current and power factor to vary. The magnitude of these variations depend upon the load rating. These fluctuations leads to loss in power quality and ultimately blackouts. Dynamic addition of capacitor banks brings solution to this problem. In this paper, the Dynamic Power Factor Control (DPFC) of single phase AC system is...
This paper presents a power transfer technique for Inductively Coupling Power Transfer (ICPT) Systems by searching suitable switching frequency based on the maximum DC power supply current. To verify the proposed control strategy, an ICPT system is implemented by a full-bridge resonant inverter that is compensated its switching losses by capacitors on both primary and secondary sides. The analysis...
This paper presents a loosely coupled inductive power transfer (IPT) system for low power applications. Two separated coils form an inductive power transfer through an air gap due to the magnetic coupling. The primary circuit uses a Class E converter circuit to drive the non-linear load, which theoretically produces zero switching losses. In order to ensure the magnetic flux leakage is minimized,...
The contactless transformer is the core of the Contactless Electrical Energy Transmission (CEET) system, and it forms a loosely coupled system. The transmission performance of contactless transformer is relatively low, but the method of capacitor compensation can change its performance. Using the mutual inductance model of contactless transformer to analyze the circuit structure, we can get different...
The paper presents the dynamic modeling and coordinated control strategy for an integrated micro grid scheme using Photo Voltaic PV, Fuel Cell FC, and backup Diesel generation with additional battery backup system. The integrated scheme is fully stabilized using a novel FACTS based green filter compensators that ensures stabilized DC bus voltage, minimal inrush current conditions, and load excursions...
The transmission line de-icing method based on adjusting electric load is studied by using controllable inductor and capacitor compensation, in order to reduce and avoid the impact of the freezing rain and ice disaster. The technical and economic feasibilities of various ice-melting methods are briefly compared and analyzed between inductor-adjusting-load, short-circuit and over-current. The theoretical...
The reduction of timing jitter has become a primary goal in the design of Phase Locked Loops (PLLs) and Delay Locked loops (DLLs) for high data rate systems. Timing jitter causes a decrease in timing margin and reduces the maximum achievable frequency of operation for digital circuits. This paper proposes a capacitor compensation scheme to reduce accumulated jitter in PLLs. The focus of this investigation...
An accurate method for the evaluation of 50-Hz magnetic fields produced by overhead power lines is presented. The method, which is based on the matrix formalism of multiconductor transmission lines (MTL), allows for a correct evaluation of all the currents flowing in the MTL structure, including the currents in the subconductors of each phase bundle, the currents in the ground wires, the currents...
This paper studies the influence of location and capacity sizing of distributed generation during service restoration. It is assumed that after the occurrence of fault at particular section of a distribution network, the loads get disconnected and are left unsupplied. Service should be restored to the affected loads through a network reconfiguration procedure. In this study, network reconfiguration...
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