Reactor modelling with saturation characteristic and inter-phase magnetic coupling

Khalilifar, M.; Shahrtash, S. Mohammad; Fateminia, M.; Ranjbar, A.M.

doi:10.1016/j.ijepes.2020.106228

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…A shunt reactor is a type of electrical device used in power systems to compensate for reactive power. Reactive power is the power that oscillates between the generation and consumption of electric energy due to the presence of inductive or capacitive elements in the system [1]- [4]. Shunt reactors are specifically designed to consume or produce reactive power, the reactor bank should be switched off during periods of high load on the transmission line, based on the power system's needs [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Impact of grading capacitor on transient recovery voltage due to shunt reactor de-energization for different values of current chopping

Al-Tak,

Ain,

Al-Yozbaky

et al. 2024

IJPEDS

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This paper investigates the impact of grading capacitors on transient recovery voltage (TRV) during shunt reactor switching in high voltage systems, considering different levels of current chopping. Shunt reactor de-energization can result in voltage surges and instability due to current chopping effects. The study utilizes simulation models using ATP-Draw software to assess the effectiveness of grading capacitors in mitigating TRV under various operating conditions as well as of using a proposed method to mitigate the excessive TRV across the circuit breaker. The findings provide valuable insights into managing TRV during shunt reactor switching, enhancing power system stability and reliability. The results obtained showed that the TRV across the circuit breaker decreased by 61.5% by using circuit modification as well as adding a grading capacitor.

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Section: Introductionmentioning

confidence: 99%

Impact of grading capacitor on transient recovery voltage due to shunt reactor de-energization for different values of current chopping

Al-Tak,

Ain,

Al-Yozbaky

et al. 2024

IJPEDS

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“…In order to increase the power density and reduce the weight of modern SMPS, the operation of inductors in such converters under moderate saturation is gaining interest. The behavior of inductors approaching saturation has already been of interest for low-frequency applications [2], [3] due to its influence on the current in the circuit where it is employed. Also, in higher frequency applications concerning SMPS, the inductor can be advantageously exploited outside of the linear zone to reduce its cost and weight [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Non-Linear Inductors Characterization in Real Operating Conditions for Power Density Optimization in SMPS

Scirè¹,

Ventimiglia²,

Lullo³

et al. 2023

Preprint

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The exploitation of power inductors outside their linear region in switching converters can be achieved by raising the current until a decreasing of the inductance can be noticed. It allows using a smaller magnetic core increasing the power density of the converter. On the other hand, a detailed description of the magnetization curve including the temperature is required. Since this information is often not included in the inductor’s datasheets, this paper shows how to identify the behavior of an inductor when it is operated up to saturation and its temperature rises. In order to characterize the inductor in real operating conditions, a dedicated measurement rig has been developed. It consists of a switching converter that encompasses the inductor under test and is controlled by a virtual instrument developed in LabVIEW. The characterization system was tested by retrieving the inductance and the magnetization curves vs. current for two commercial inductors at core tem-peratures up to 105°C. The magnetic core is then characterized by the saturation current versus inductance, obtaining an expression for the whole family of inductor sharing the same core. Finally, we analyzed experimentally the thermal transient of the inductors in operating conditions con-firming the fundamental role of temperature in changing the current profiles and the core saturation condition.

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“…This operation, where the differential inductance is reduced to half of its maximum value, is gaining attention. The behavior of inductors approaching saturation has already been of interest for low-frequency applications [3,4] due to its influence on the current in the circuit where it is employed. Additionally, in higher-frequency applications concerning SMPS, the inductor can be advantageously exploited outside of the linear zone to reduce its cost and weight [2,5,6].…”

Section: Introductionmentioning

confidence: 99%

Non-Linear Inductors Characterization in Real Operating Conditions for Power Density Optimization in SMPS

et al. 2021

View full text Add to dashboard Cite

The exploitation of power inductors outside their linear region in switching converters can be achieved by raising the current until a decrease in the inductance can be noticed. This allows using a smaller magnetic core, increasing the power density of the converter. On the other hand, a detailed description of the magnetization curve including the temperature is required. Since this information is often not included in the inductor’s datasheets, this paper shows how to identify the behavior of an inductor when it is operated up to saturation and its temperature rises. In order to characterize the inductor in real operating conditions, a dedicated measurement rig was developed. It consists of a switching converter that encompasses the inductor under test and is controlled by a virtual instrument developed in LabVIEW. The characterization system was tested by retrieving the inductance and the magnetization curves vs. current for two commercial inductors at core temperatures up to 105 °C. The magnetic core was then characterized by the saturation current vs. inductance, obtaining an expression for the whole family of inductors sharing the same core. Finally, we experimentally analyzed the thermal transient of the inductors in operating conditions, confirming the fundamental role of the temperature in changing the current profiles and the core saturation condition.

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Reactor modelling with saturation characteristic and inter-phase magnetic coupling

Cited by 3 publications

References 12 publications

Impact of grading capacitor on transient recovery voltage due to shunt reactor de-energization for different values of current chopping

Impact of grading capacitor on transient recovery voltage due to shunt reactor de-energization for different values of current chopping

Non-Linear Inductors Characterization in Real Operating Conditions for Power Density Optimization in SMPS

Non-Linear Inductors Characterization in Real Operating Conditions for Power Density Optimization in SMPS

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