High-frequency models of ferrite core inductors

Bartoli, Matteo; Reatti, Alberto; Kazimierczuk, Marian K.

doi:10.1109/iecon.1994.398065

Cited by 36 publications

(26 citation statements)

References 4 publications

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“…This capacitance and the capacitance realized at the terminals of an inductor is collectively called as distributed capacity or capacitance of the inductor. This distributed capacitance introduces dielectric losses which can be modeled by adding a frequency dependent series resistance to the inductor as described in [23] and [3]. Further this frequency dependent series resistor also models the skin and proximity effects that cause the wire resistance to increase with frequency as in [4].…”

Section: Wired Micro Coil Modelmentioning

confidence: 99%

Wireless Measurement System for Extracting Open Loop Micro Coil Parameters

2011

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We report here the wireless extraction of an open ended micro coil inductance L, parasitic capacitance C and resistance R using an inductively coupled passive system which consists of an electrically small magnetic loop antenna as a sensor coil and an open ended test micro coil. Wireless analytical model is developed which includes the gimmick effects generated due to parasitic coupling capacitances. The micro coil parameters i.e. inductance, inter winding capacitance and resistance are extracted from the wirelessly measured impedance signal and then compared with the analytical model. Further the inductively coupled system is simulated using COMSOL multiphyscics in ACDC module.

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Section: Wired Micro Coil Modelmentioning

confidence: 99%

Wireless Measurement System for Extracting Open Loop Micro Coil Parameters

2011

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“…Assuming that a solid round wire is used, the chosen wire must have an inner diameter d i greater than d i(min) given by (20) which can be selected from a wire datasheet. In addition, the average length per turn l T of the winding wound around the core is estimated.…”

Section: Winding Designmentioning

confidence: 99%

“…4) Predict the winding and core power losses; hence, the total power loss [16]- [19]. 5) Identify an appropriate model that best represents the inductor behavior over a range of operating frequencies and to be able to predict the ac characteristics [20]- [25]. This paper presents a comprehensive procedure to design the choke inductors such as those used in class-E power inverters.…”

mentioning

confidence: 99%

Analysis and Design of Choke Inductors for Switched-Mode Power Inverters

Saini

Ayachit

Reatti

et al. 2018

IEEE Trans. Ind. Electron.

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Abstract-This paper presents the design, analytical estimation of power losses, and experimental measurement of choke inductors for switched-mode power inverters. The described approach is applicable to a wide variety of circuits such as Class-E inverters and converters. The expressions required to design the magnetic core in the choke inductor using the area-product ( A p ) method are given. The equations for the dc resistance, ac resistance at high frequencies, and dc and ac power losses are provided for the solid round winding wire. To validate the presented approach, an example class-E zero-voltage switching power inverter with practical specifications is considered. A core with air gap is selected to avoid core saturation in the choke inductor, which conducts dc current and a small ac current. The gapped core power loss density and power loss are estimated using Steinmetz empirical equation. It is shown that the winding power loss due to the dc current is dominant for the given design. A comparison between the area-product A p method and the preexisting core geometry coefficient K g method is presented. The measured magnitude of the inductor impedance has shown that the designed choke is useful up to ten times the switching frequency.

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“…However, as the frequency increases, the magnetic field near the center of the wire increases the local reactance. The charge carriers then move towards the edge of the wire, decreasing the effective area and increasing the apparent resistance of the inductor winding [87], [88], capacitor [89], and resistor.…”

Section: G Componentsmentioning

confidence: 99%

Coupling for Power Line Communications: A Survey

Costa¹,

Queiroz²,

Adebisi³

et al. 2017

JCIS

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The advent of power line communication (PLC) for smart grids, vehicular communications, internet of things and data network access has recently gained ample interest in industry and academia. Due to the characteristics of electric power grids and regulatory constraints, the effectiveness of coupling between the power line and PLC transceivers has become a very important issue. Coupling devices used to inject or extract data communication signals into or from power lines are very important components of a PLC system. There is, however, an obvious gap in the literature for a detailed review of existing PLC couplers. In this paper, we present a comprehensive review of couplers, which are required for narrowband and broadband PLC transceivers. Prevailing issues that protract the design of couplers and consequently subtended the inventions of different types of couplers are clearly described. We also provide a useful classification of PLC couplers based on the type of physical couplings, voltage levels, frequency bandwidth, propagation modes and a number of connections. This survey will guide researchers, as well as designers alike, into a quicker resourcing when studying coupling in narrowband and broadband PLC systems.

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High-frequency models of ferrite core inductors

Cited by 36 publications

References 4 publications

Wireless Measurement System for Extracting Open Loop Micro Coil Parameters

Wireless Measurement System for Extracting Open Loop Micro Coil Parameters

Analysis and Design of Choke Inductors for Switched-Mode Power Inverters

Coupling for Power Line Communications: A Survey

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