Comparison of Four Different Types of Ferromagnetic Materials for Fault Current Limiter Applications

Prigmore, Jay; Mendoza, Jorge Augusto Gamboa; Karady, G.G.

doi:10.1109/tpwrd.2013.2249537

Cited by 20 publications

(17 citation statements)

References 8 publications

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“…The Jiles–Atherton method of hysteresis is implemented in PSCAD using the equations found in and implemented in to model the nonlinearities of the NdFeB core. The nonlinear core permeability of the NdFeB core produces a nonlinear inductance and is the key property used to limit the fault current.…”

Section: Simulation Resultsmentioning

confidence: 99%

A neodymium hybrid fault current limiter

Prigmore

Mendoza

Karady

2014

Int. Trans. Electr. Energ. Syst.

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This dissertation presents a new hybrid fault current limiter (FCL) topology that is primarily intended to protect single-phase power equipment. It can however be extended to protect three phase systems but would need three devices to protect each individual phase. In comparison against the existing fault current limiter technology, the salient features of the proposed topology are: a) provides variable impedance that provides a 50% reduction in prospective fault current; b) near instantaneous response time which is within the first half cycle (1-4 ms); c) the use of semiconductor switches as the commutating switch which produces reduced leakage current, reduced losses, improved reliability, and a faster switch time (ns-µs); d) zero losses in steady-state operation; e) use of a Neodymium (NdFeB) permanent magnet as the limiting impedance which reduces size, cost, weight, eliminates DC biasing and cooling costs; f) use of Pulse Width Modulation (PWM) to control the magnitude of the fault current to a user's desired level. g) experimental test system is developed and tested to prove the concepts of the proposed FCL.This dissertation presents the proposed topology and its working principle backed up with numerical verifications, simulation results, and hardware implementation results. Conclusions and future work are also presented.ii DEDICATION

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Section: Simulation Resultsmentioning

confidence: 99%

A neodymium hybrid fault current limiter

Prigmore

Mendoza

Karady

2014

Int. Trans. Electr. Energ. Syst.

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“…The relative permeability of the magnetic iron core (μ r-core ) and consequently the associated time-varying inductance (L) can be expressed as follows [7,18,27]:…”

Section: Design Features and Superior Advantages Of Compact Cross Delmentioning

confidence: 99%

Compact designs of permanent‐magnet biased fault current limiters

Eladawy

Metwally

2020

IET Electric Power Applications

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This study proposes two novel compact designs of three-phase permanent-magnet biased fault current limiters (PMFCLs), namely, delta-shaped and compact cross delta PMFCLs. The actual representation of neodymium permanent magnet (PM) is based on the Jiles-Atherton modelling for the demagnetisation behaviour in the second quadrant of its actual non-linear B-H hysteresis loop. This PM is a preliminary representation validated through experimental measurements to ensure the trends and behaviour of PMFCL during its entire pre-fault, fault and post-fault recovery durations. Comprehensive time-domain, electromagnetic finite-element simulations, through COMSOL multiphysics package, have been conducted to study the relative effect of the constructive controlling parameters on the general performance of these proposed PMFCLs. However, the general performance of PMFCL can be characterised through the voltage drop and power losses of normal operation, and the fault current clipping ratio during the fault condition. Results reveal that the compact cross delta design has superior performance and enhanced capability of limiting any type of fault current, either symmetrical or unsymmetrical, with leading advantages of significant reduction of the voltage drop across PMFCL and power losses during the normal operation of the grid.

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“…The FCL is one of the protection devices, which is used to limit the fault current. The FCL should limit the fault current passing through it within the first half-cycle and the best FCL should limit the fault current before the first peak [3]. However, high price, power losses, continuous current after fault current flow limitation, and harmonic distortion are some of the main problems of typical FCLs.…”

Section: Introductionmentioning

confidence: 99%

A Compound Current Limiter and Circuit Breaker

et al. 2019

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The protection of sensitive loads against voltage drop is a concern for the power system. A fast fault current limiter and circuit breaker can be a solution for rapid voltage recovery of sensitive loads. This paper proposes a compound type of current limiter and circuit breaker (CLCB) which can limit fault current and fast break to adjust voltage sags at the protected buses. In addition, it can act as a circuit breaker to open the faulty line. The proposed CLCB is based on a series L-C resonance, which contains a resonant transformer and a series capacitor bank. Moreover, the CLCB includes two anti-parallel power electronic switches (a diode and an IGBT) connected in series with bus couplers. In order to perform an analysis of CLCB performance, the proposed structure was simulated using MATLAB. In addition, an experimental prototype was built, tested, and the experimental results were reported. Comparisons show that experimental results were in fair agreement with the simulation results and confirm CLCB’s ability to act as a fault current limiter and a circuit breaker.

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Comparison of Four Different Types of Ferromagnetic Materials for Fault Current Limiter Applications

Cited by 20 publications

References 8 publications

A neodymium hybrid fault current limiter

A neodymium hybrid fault current limiter

Compact designs of permanent‐magnet biased fault current limiters

A Compound Current Limiter and Circuit Breaker

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