# Questions tagged [modelling]

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### Cuk Converter Average Model

I would like to create average model of Cuk converter but not getting any reference. Can anyone give any reference or some idea to start with? "Generally Cuk converter is 4th order but if we use ...
1 vote
1 answer
65 views

### Lumped model of a load and source connected by two long paralel wires

I want to understand how to skecth an equivalent circuit model circuit composed of a load (resistor to make it simple) connected to a soruce bia two long paralel wires. Take the following figure as a ...
• 334
1 vote
0 answers
50 views

### Model Microcontroller's Power Consumption

I am currently building a simulator (time-domain model) that includes a System-on-Chip, a constant voltage source and a series resistor. Current solution: My initial intuition was to model the SoC's ...
• 31
3 votes
1 answer
233 views

### What is the effect of tachometer feedback (derivative feedback) on the time constant of a control system? Does it increase or decrease?

I was going through some practice problems on Control System Modelling and came across this problem. It seems like the answer to this question is that the time constant is "reduced" but the ...
• 31
0 votes
0 answers
67 views

### Modelling two real capacitors in parallel

I am currently trying to model parts of an electronic system in Simulink using standard (discrete) blocks. I'd like to model two capacitors connected in parallel incl. their series resistances (ESR). ...
• 31
2 votes
3 answers
922 views

### What are the rationales behind real wire (transmission line model), real capacitor and real inductor model?

I have been pondering about how the real model of circuit elements (wire, capacitors and inductors) and transmission model are derived through intuition (based on physics). Here are my references from ...
• 83
2 votes
2 answers
349 views

### Model positive exponential current curve on LTSPICE

I am trying to model the inrush current for a contactor. From the specifications I should get something like this: The hold current is 0.13A and the inrush current is 3.2A. This is controlled using R3 ...
• 2,227
0 votes
0 answers
28 views

### BMS BQ25731 modelling using datasheet [duplicate]

How Can I design model for BQ25731 BMS using Datasheet? What procedure I need to follow Or what should I look for in a datasheet? Any suggestion or any Application note you recommend. I'm asking this ...
• 25
1 vote
1 answer
127 views

### Modelling of current flow in a plate or plane

Is there an FEA technique for modelling current flow in an irregularly shaped conductor, other than by applying nodal (or mesh) analysis? I want to create a model of the current flowing in a PCB that ...
• 11
0 votes
1 answer
267 views

### LED lighting for use in miniature tanks

Novice, built a model for a popular wargame. I built a modular tank using magnets for multiple variants from 1 kit. I hope to add some LEDs (max of 20 3V) & fibre optic lights on the vehicle and ...
0 votes
1 answer
225 views

### 3 phase cable equivalent circuit

I am trying to build an equivalent circuit for a 3-ph+N cable. Could you help me to identify the parameters. In the picture, you can find the primitive impedance matric for the cable and the proposed ...
0 votes
0 answers
56 views

### Help with SPICE parameter (in)dependence and real transistors

I am simulating an IC off a manufactures datasheet schematic using suggested integrated BJT Spice parameter values from a textbook. The simulation works well BUT i need to increase storage time and ...
• 21
0 votes
0 answers
263 views

### Pressure to current conversion

I was trying to convert the pressure values (in psi) into 4-20mA current. The range of pressure values I have chosen is between 0-10Psi. But according to the link given below the pressure from 3-15Psi ...
• 11
0 votes
0 answers
37 views

### Maglev Modelling and Control System Design

Im trying to model a Maglev system (schematic seen below) the system paramentres are below aswell. Im aiming to try and get a state space represetation for the system. This is what i have done by ...
• 79
1 vote
1 answer
2k views

### Linearization of Non Linear State Space Model

Im designing a PI controller for a Maglev experiement but im a little stuck on how to linearize the non linear state space model. I have developed the state equations (seen below) and i know the ...
• 79
0 votes
2 answers
80 views

### What interesting application areas utilise electrical engineering simulation tools, e.g modelling mechanical analogues? [closed]

Electrical simulation methods have been developed extensively to simulate electrical and electronic circuits. It is commonly recognised that there are electrical analogs to mechanical components ...
• 624
5 votes
1 answer
5k views

### Lookup tables in LTspice

I'm trying to implement at fuel cell in LTspice, using the lookup table function and a Arbitrary Behavioural Voltage Source (ABVS). I specify the I-V relationsship from the datasheet as: V = table(I,...
2 votes
1 answer
414 views

### Modified Gummel-Poon BJT Modelling Issue

First of all, sorry for my bad english. Output for Vb: From the schematic above, I redrew the 2N3904 BJT into the modified Gummel-Poon model. Output for Vb: The equation for B1, B2 and B3 were ...
0 votes
2 answers
312 views

### Overlay plots from PSpice - SIMetrix or SIMetrix to PSpice

I wanted to verify the accuracy of a identical model which I modelled, between PSpice and SIMetrix simulator I ran model in Pspice and SIMetrix separately and probed required nets (net names are ...
• 307
0 votes
1 answer
52 views

### Harmonics modelling in electrical machines

I am currently working with a permanent magnet synchronous machine and I am trying to model the harmonics caused by magnetic saturation, dead time, and non linearities of the frequency inverter. It ...
3 votes
2 answers
353 views

### What is wrong with my inverted pendulum?

I have been making an inverted pendulum using LQR. Here's a list of my hardware: Microcontroller: Microchip WiFIRE (PIC 32) Motor Control: L298N Encoders (2x): US Digital shaft encoders (4095 ...
0 votes
3 answers
231 views

### Modelling the equivalent series resistance's voltage in a circuit

Say a 2H inductor has an equivalent series resistance of 2000 ohm at a particular frequency. Logically to me, that inductor would be modeled as an inductor in series with a resistor. However, that ...
1 vote
1 answer
133 views

### How determinate parameters for thermal-model battery (Advanced question about battery modelling)

I'm trying to simulate an electrical model based on Ceraolo battery model for lead-acid battery. The challenge in this model is to determine the parameters that describe it. I can understand and ...
• 157
2 votes
2 answers
125 views

### Calibrating DAQs

I'm using some of National Instruments' DAQs for some measurements, but their calibration is slightly off. To work around this I am hoping to factor in any imperfections into the measurements such ...
• 1,856