A SPICE behavioral model for current-controlled magnetic inductors

Rozanov, Evgeny; Ben‐Yaakov, S.

doi:10.1109/eeei.2004.1361160

Cited by 14 publications

(8 citation statements)

References 3 publications

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“…The method presented in this paper also describes the inductor as a function of its own current but will accept any mathematical formula. In the free software, LT-SPICE, the modeling of the inductor saturation is possible in two different ways [3].…”

Section: Related Workmentioning

confidence: 99%

Direct Modeling of Inductor Saturation Behavior in a SPICE-Like Transient Analysis

Winkler¹,

Günther²

2019

IJMO

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In this paper, we demonstrate how the saturation behavior of an inductor can be directly inserted as a software function into the mathematical description of a circuit and included in a SPICE-like numerical simulation. Within the numerical computation of the circuit, the inductance value changes in dependence on the actual inductor current, following the real-life behavior of the choke. The procedure shown provides more exact and realistic simulation results then assuming the inductance to be a constant value, which is the common way in SPICE programs. Based on an example choke, we show how any saturation curve, derived from measurement data or core manufacturer's information, can be inserted into a computational model of the inductance. This is a significant advantage over the possibilities to model inductor saturation, which different SPICE programs are offering, what is also shown in the paper. On the application of a boost converter, the impact of the consideration of the saturation on the simulation result is presented and compared with a simulation with a constant inductor.

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Section: Related Workmentioning

confidence: 99%

Direct Modeling of Inductor Saturation Behavior in a SPICE-Like Transient Analysis

Winkler¹,

Günther²

2019

IJMO

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“…4). In [11], they use the gyrator-capacitor scheme in which the nonlinear permeance is emulated by a non-linear capacitor that is built by using a nonlinear 'transformer' circuit loaded with a constant capacitance. This same method is used to emulate our nonlinear inductance with eq.…”

Section: Inductance and Detection Of Flux Density And Its Derivatimentioning

confidence: 99%

“…4, we use SPICE compatible analog behavior models with the [11]. The (+) terminal is set at the "dFlux" node.…”

Section: Inductance and Detection Of Flux Density And Its Derivatimentioning

confidence: 99%

“…There are SPICE based dynamic inductor models using analog behavior models for circuit simulation, such as the nonlinear transformer-inductance [10] and the gyrator-nonlinear capacitor [11] for emulating nonlinear inductors. However, [10,11] do not include a dynamic loss resistance or the inductance nonlinearity with frequency dependence.…”

Section: Introductionmentioning

confidence: 99%

“…However, [10,11] do not include a dynamic loss resistance or the inductance nonlinearity with frequency dependence. Our proposed model includes both.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A flexible dynamic behavior model of inductors to link time domain simulation with empirical loss equations that is instantaneous dB/dt and B(t) dependent for SPICE simulation

Yeh

2011

2011 IEEE Ninth International Conference on Power Electronics and Drive Systems

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A flexible dynamic behavior inductor circuit model that links the time domain simulation with/ and dependent empirical loss equations is proposed. For the first time, this model automatically detects dB/dt and and calculates the dynamic resistance value for a resistor that is put in parallel with an inductor whose inductance is also calculated according to its dependency on and operating frequency, all in a time domain. This circuit model is flexible since one can change the loss formula easily by replacing a "resistor" expression of an ABM (Analog Behavior Model) in the circuit. The circuit model is verified both with sinusoidal and square wave excitations at different frequencies and different excitation levels. The simulated power loss data are compared with experimental data. It shows an excellent match for all the three types of empirical equations tested in this inductor circuit model. However, the impedance behavior is found to be dependent on empirical loss equations. This proposed model is useful for circuit designs that use inductors.I.

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Reliable and optimal design of variable inductor integrated LLC converter

Wu,

Du,

Wang

et al. 2024

Circuit Theory & Apps

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The variable inductor integrated LLC (VI‐LLC) converter is able to operate at constant switching frequency and avoid wide variable frequency range and thus emerged in recent years. However, VI‐LLC converter suffers two reliability problems. First, coupling between the main winding and the control winding of variable inductor (VI) causes negative effects on the converter, which are few considered in the literature. Second, parameter fluctuation (PF) of resonant elements has negative effects on operation and gain reliability of VI‐LLC converter, causing unreliable operation and voltage gain deviation. To solve the above problems, in this paper, a reliable and optimal design methodology of VI‐LLC converter is proposed. First, the coupling effects of VI are introduced and analyzed, with a coupling index proposed to quantify and reduce the coupling effects. Then, negative effects on VI‐LLC converter caused by PF are visualized and eliminated with the filtered parameter space and the redetermined variation range of VI. Based on the above consideration, a reliable final parameter space considering PF effects and the coupling problem is established. Finally, the efficiency space referring to the final parameter space is established based on the loss model of VI‐LLC converter to determine the optimal design candidate. Experimentation has shown a good agreement with theory and proven validity of the proposed design methodology.

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A SPICE behavioral model for current-controlled magnetic inductors

Cited by 14 publications

References 3 publications

Direct Modeling of Inductor Saturation Behavior in a SPICE-Like Transient Analysis

Direct Modeling of Inductor Saturation Behavior in a SPICE-Like Transient Analysis

A flexible dynamic behavior model of inductors to link time domain simulation with empirical loss equations that is instantaneous dB/dt and B(t) dependent for SPICE simulation

Reliable and optimal design of variable inductor integrated LLC converter

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