Simulation of magnetics for power electronics using Python

Name: Simulation of magnetics for power electronics using Python
Rating: 4.6 (43 reviews)

Simulation of inductors and transformers using Python Power Electronics

Created byShivkumar Iyer

Last updated 6/2020

English

What you'll learn

Basics of magnetic circuits in electrical engineering
Solving basic magnetic circuits
Creating a custom inductor model with magnetic circuit details
Understanding the concept of magnetic coupling
Generating a mathematical model for coupled inductors using basic physics
Simulating coupled inductors
Basics of transformers
Generating a mathematical model for a transformer
Simulating a transformer
Simulating step-up and step-down transformers
Understanding dot polarities of transformer windings
Simulating multi winding transformer windings
Topology and operation of a flyback converter
Simulating a flyback converter

Course content

6 sections • 80 lectures • 16h 36m total length

Course overview8:43
Expected goals3:03
Course requirements and prerequisites8:31
Course audience10:39
Completing the course9:47

Introduction3:57
Inductor Basics10:55
Magneto motive force of a coil6:09
Flux in the core of an inductor14:46
Solving magnetic circuits9:17
B-H Equation7:18
B-H curve10:39
Approach to modeling an inductor12:39
Installing the circuit simulator18:07
Getting started with simulating a resistor-inductor (R-L) circuit11:01
Simulating the inductor from the library16:02
Creating the custom inductor component18:09
Simulating the custom inductor component21:27
Numerical integration techniques and output impedance impact18:25
Simulating an inductor with the magnetic core details23:38
Simulating an inductor core with an air gap21:02
Conclusion4:26

Introduction3:38
Concept of magnetic coupling12:04
Transfer of energy between coupled coils11:34
Expressing coupling between coils mathematically13:12
Mutual inductance10:49
Approach to modeling coupled inductors5:53
Editing the schematics of the coupled inductor simulation15:07
Coding the magnetic circuit of the coupled inductors24:59
First analysis of coupled inductor simulation results21:27
No load simulation showing input power factor and magnetization current13:54
Short circuit of the second coil with voltage collapse17:52
Impedance matching25:28
Connecting an R-L load to the output coil11:13
Impedance matching of the output coil for the R-L load7:27
Simulating coupled coils with different number of turns14:48
Simulating coils wound in opposing senses13:19
Expressing equations in a matrix form16:28
Converting a matrix to upper triangular form24:31
Solving matrix equations27:17
Optimizing the solution method12:33
Conclusions6:24

Introduction4:27
Transformer basics16:38
Transformer winding inductances11:08
Transformer winding turns ratio8:27
Setting up the transformer simulation11:59
Editing transformer circuit parameters9:57
Transformer model configuration and control code15:23
Coding the transformer parameters14:11
Verifying control code and interpreting parameters11:36
Running the transforming simulation and verifying the results8:40
Transformer inrush current9:41
Simulating a step-up transformer7:23
Understanding current transformation in transformers12:22
Including the core loss component in the simulation model12:23
Include the core loss component in the simulation model by adding a magnetic loss resistor across the winding to represent core losses, alongside the winding parasitic resistance to improve accuracy.
Dot polarities in transformer windings10:23
Simulating a transformer with opposing dot polarities10:27
Multi winding transformer - creating circuit schematics11:50
Editing circuit parameters of a multi winding transformer9:53
Editing the magnetic model of a multi winding transformer19:26
Analyzing the simulation results of a multi winding transformer11:52
Conclusions4:28

Introduction3:30
Applications of power converters8:46
Flyback converter topology and operation12:08
Explore the flyback converter topology: how energy stores in the magnetizing inductance during on-time and discharges through the secondary to charge the output, with multiple windings and a regulated output.
High frequency transformers10:57
Creating the circuit of a flyback converter20:15
Design and simulate a flyback converter circuit in a Python-based magnetics framework, integrating input and interface circuits, transformer windings, switches, capacitors, and output load.
Editing the circuit parameters of the flyback converter13:12
Using Pulse Width Modulation to control the switch13:41
Verifying the switched voltage across the primary of the flyback transformer14:59
Verify the switched voltage on the flyback transformer primary by analyzing pulse width modulation signals in a python-based magnetics simulation, noting duty cycle effects and leakage spikes.
Modifying the dot polarities of the flyback transformer7:10
Coding the parameters of a high frequency transformer10:34
Solving simulation instability by decreasing integration time step16:51
Observing the transformer winding voltages11:01
Observing the charge and discharge of the output capacitor21:20
Examining transient waveforms of the output7:16
Conclusions4:20

Requirements

Basic Python programming
Basic power electronics knowledge
Simulating power electronic circuits with control loops in Python Power Electronics

Description

This course covers the theory of transformers by simulating them. The simulation models are built from first principles using fundamental laws of physics. To ease the process of bridging the gap between theory and simulation, we will begin with simple inductors and compare simulation results with theory. The course contain several code along sessions with all simulation models built using Python and with the free and open source circuit simulator Python Power Electronics. The final session contains a case study of a flyback converter where besides the theory of operation of the converter, the simulation also covers the high frequency transformer used.

Who this course is for:

Students of electrical engineering - undergraduates and graduates
Practicing electrical engineers
Power supply engineers

Simulation of magnetics for power electronics using Python

What you'll learn

Explore related topics

Course content

Introduction5 lectures • 41min

Modeling and simulation of an inductor17 lectures • 3hr 48min

Modeling Coupled Inductors21 lectures • 5hr 10min

Modeling and simulating transformers21 lectures • 3hr 53min

Flyback converter15 lectures • 2hr 56min

Conclusions1 lecture • 9min

Requirements

Description

Who this course is for: