Simulation Method of Inductor and Nonlinear Equivalent Circuit Model of Inductor

A technology of equivalent circuit model and simulation method, which is applied in the direction of instruments, electrical digital data processing, complex mathematical operations, etc., can solve problems such as poor impedance characteristics, unsuitable circuit simulation, and excessive difference, and achieve the effect of simple structure

Active Publication Date: 2018-05-15
MURATA MFG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] This ideal C circuit model is not suitable for circuit simulation due to the large difference between the impedance characteristics of actual components and components, especially in the high frequency band, but it is very convenient for the initial stage of circuit design or the prediction of circuit characteristics

Method used

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  • Simulation Method of Inductor and Nonlinear Equivalent Circuit Model of Inductor
  • Simulation Method of Inductor and Nonlinear Equivalent Circuit Model of Inductor
  • Simulation Method of Inductor and Nonlinear Equivalent Circuit Model of Inductor

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Embodiment approach 2

[0121] In the passive equivalent circuit model and the nonlinear equivalent circuit model of Embodiment 2, in the induction element L 1 with resistive element R 1 The inductive element L is connected in parallel on the series circuit of 2 with resistive element R 2 A series circuit of , thereby constituting a passive circuit element representing an equivalent circuit of an inductor as a simulation object. And, in the nonlinear equivalent circuit model shown in (b) of the same figure, the control voltage source B 1 connected in series to the sensing element L 1 and resistive element R 1 A series circuit, and with the control voltage source B 1 same control voltage source B 2 connected in series to the sensing element L 2 and resistive element R 2 series circuit. That is, in each equivalent circuit model of the second embodiment, the control voltage source B 1 and passive circuit components L 1 , R 1 A series circuit, and the control voltage source B 2 and passive c...

Embodiment approach 4

[0150] In Embodiment 4 Figure 17 In the passive equivalent circuit model shown in (a), in Figure 12 by the circuit element R X1 , R X2 , L X1 , L X2 The resistive element R and the inductive element L represented by are composed of a passive circuit element R that does not depend on the DC superimposed current Idc and can be regarded as a constant 1 , R 2 , L 1 , L 2 To represent. Figure 17 In the nonlinear equivalent circuit model shown in (b), the control voltage source B 1 connected in series to the sensing element above L 1 and resistive element R 1 A series circuit, with the control voltage source B 1 same control voltage source B 2 connected in series to the sensing element above L 2 and resistive element R 2 series circuit, which means Figure 12 The circuit element R X1 , R X2 , L X1 , L X2 . In each equivalent circuit model of Embodiment 4, with Figure 5 In the equivalent circuit models of the second embodiment shown, the control voltage sourc...

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Abstract

An inductor simulation method and nonlinear equivalent circuit model enabling dynamic simulation of nonlinear characteristics when a direct current is superimposed with high precision. An equivalent circuit of an inductor is represented using a series circuit of passive circuit elements. Characteristic change ratios of the passive circuit elements when a direct current is superimposed are expressed as an approximate function on the basis of actually measured values. A reference current measured by each of voltage source models is referred to by a control voltage source connected in series to the passive circuit elements. The characteristic change ratios are calculated in accordance with the reference current Iref. Difference voltages are generated on the basis of the characteristic change ratios and voltages occurring when no direct current is superimposed, they are superimposed on the voltages VL1 and VR1 occurring when no direct current is superimposed, thereby simulating the nonlinear characteristics.

Description

technical field [0001] The present invention relates to an inductor simulation method for simulating the nonlinear characteristics of the inductor when direct current is superimposed, and a nonlinear equivalent circuit model of the inductor used for the simulation. Background technique [0002] In the past, such electronic component simulation methods and equivalent circuit models were used in circuit simulation in electronic circuit design. Circuit emulators such as SPICE (Simulation Program with Integrated Circuit Empahsis: general-purpose analog circuit emulator) are used in circuit simulation, and some of the circuit emulators can be used on homepages of electronic component manufacturers. The user uses the circuit emulator by accessing the homepage of the electronic component manufacturer through the Internet from a terminal such as a personal computer. [0003] Conventionally, as such a simulation method and an equivalent circuit model, there is a simulation method an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367G06F17/10
Inventor 日高青路山长功
Owner MURATA MFG CO LTD
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