Introduction to Magnetism - The Basics and Magnetic Component Design Explained
8 Enrollments Level : AdvancedRelevance
Magnetic components are fundamental to modern electrical and power systems, playing a crucial role in energy conversion, signal processing, and power transmission. From transformers in power grids to inductors in power supplies, magnetic components are integral to ensuring the efficiency and reliability of electrical circuits. A strong understanding of magnetics is essential for engineers and designers working in power electronics, electrical engineering, and related fields.
Abstract
This building block provides a comprehensive introduction to the fundamentals of magnetics, covering essential principles, definitions, and key formulas. An overview of magnetic concepts such as flux, permeability, inductance, and the BH curve, ensuring a strong theoretical foundation, is taught. Practical examples illustrate the widespread use of magnetic components in electrical and power systems. Beyond theoretical insights, this building block delves into the practical aspects of magnetic component design. It outlines a step-by-step methodology for designing magnetic components and gives an insight into how to implement the design methodology by designing a DC inductor from scratch. Critical design considerations, including core material selection, wire selection, and power loss and temperature rise minimisation, are explored to ensure optimal performance. By bridging theory with application, this building block equips learners with the knowledge and tools needed to develop efficient and effective magnetic components for various engineering applications.
Learning Outcomes
Understand Fundamental Magnetic Concepts
Define and explain key magnetic principles, including flux, permeability, inductance, and BH curve characteristics, etc.
Apply fundamental equations related to magnetics in engineering applications.
Analyse the Role of Magnetic Components in Electrical Systems
Identify and describe the functions of essential magnetic components such as DC inductors.
Examine practical applications of magnetic components in electrical and power systems.
Apply Design Methodologies for Magnetic Components
Apply a step-by-step approach to designing magnetic components, including DC inductors.
Evaluate the impact of core material selection, wire selection, and other design parameters on component performance.
Optimise Magnetic Component Performance
Assess and mitigate losses in magnetic components to enhance efficiency.
Implement thermal management strategies like core and wire size considerations to ensure reliable operation.
Bridge Theory and Practical Application
Utilise theoretical knowledge to solve real-world engineering challenges in magnetic component design.
Develop necessary skills for designing efficient and effective magnetic components for various engineering applications.
Prior Knowledge
Basic Electrical Engineering Concepts
Understanding of voltage, current, resistance, and power.
Familiarity with Ohm’s Law and Kirchhoff’s Laws.
Electromagnetism Fundamentals (recommended but not required)
Basic knowledge of electromagnetic fields and forces.
Understanding of Faraday’s Law, Lenz’s Law, and Ampère’s Law.
Circuit Analysis
Familiarity with passive components such as resistors, capacitors, and inductors.
Mathematical Skills
Proficiency in algebra and trigonometry for analysing waveforms, trends and solving equations.
Basic knowledge of calculus, particularly differentiation and integration, for understanding magnetic component behaviour and calculation of magnetic design parameters.
Introduction to Power Electronics (recommended but not required)
Awareness of common power electronic devices, such as converters and inverters.
Awareness of the functionality of magnetic components in power electronic devices.
General understanding of energy conversion principles.
Keywords
- Basics of Magnetics
- Magnetics
- Magnetic Component Design
- power electronics
- DC Inductors
Elements
1. About this Building Block
Descriptor BB - Introduction to Magnetism - The Basics and Magnetic Component Design Explained
2. Presentations
Presentation - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 1
Presentation - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 1
Within this slideshow, the concept of magnetism will be taught.
Next to this, you will be able to:
identify magnetic poles and understand the interaction between them
describe the formation and properties of a magnetic field
understand the relationship between magnetic induction, flux density, and flux
and comprehend the concept of electromagnetism
Presentation - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 2
Within this slideshow, for magnetic permeability, the concept will be taught.
Next to this, you will be able to:
understand magnetic field strength and the principle of Ampère’s Law
recognise ferromagnetic materials and their properties
and comprehend the concept of a BH magnetisation curve and its remarks
Presentation - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 3
Within this slideshow:
we will first look at the concept of Hopkinson’s Law
then you will learn how to determine magnetic reluctance
next, for the Lorentz Force, the formation and properties will be taught
and lastly, you will be able to understand the concept of motional EMF, Faraday-Lenz’s Law, self-induction voltage, and inductance
Presentation - Introduction to Magnetism - DC Inductor Design Procedure Explained - Part 1
Within this slideshow, you will learn:
the basic concepts for designing magnetic components
and the step-by-step design flow to design a DC inductor
Presentation - Introduction to Magnetism - DC Inductor Design Procedure Explained - Part 2
Within this slideshow, you will learn more about the derivation of DC inductor design parameters, like:
the area product
the related energy
both the maximum and AC flux density
the core loss by using Steinmetz
and the copper loss by using Dowell’s equation
Presentation - Introduction to Magnetism - DC Inductor Design Procedure Explained - Part 3
Within this slideshow, you will learn:
to work with the step-by-step design procedure of a DC inductor, as explained in the two previous slideshows, by looking at a DC inductor design example
REMARK: These slideshows are also available as a video recording that contains the same content.
3. Video and knowledge clips
Video - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 1
Video - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 1
Within this video, the concept of magnetism will be taught.
Next to this, you will be able to:
identify magnetic poles and understand the interaction between them
describe the formation and properties of a magnetic field
understand the relationship between magnetic induction, flux density, and flux
and comprehend the concept of electromagnetism
Video - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 2
Within this video, for magnetic permeability, the concept will be taught.
Next to this, you will be able to:
understand magnetic field strength and the principle of Ampère’s Law
recognise ferromagnetic materials and their properties
and comprehend the concept of a BH magnetisation curve and its remarks
Video - Introduction to Magnetism - Basics of Electromagnetism Explained - Part 3
Within this video:
we will first look at the concept of Hopkinson’s Law
then you will learn how to determine magnetic reluctance
next, for the Lorentz Force, the formation and properties will be taught
and lastly, you will be able to understand the concept of motional EMF, Faraday-Lenz’s Law, self-induction voltage, and inductance.
Video - Introduction to Magnetism - DC Inductor Design Procedure Explained - Part 1
Within this video, you will learn:
the basic concepts for designing magnetic components
and the step-by-step design flow to design a DC inductor
Video - Introduction to Magnetism - DC Inductor Design Procedure Explained - Part 2
Within this video, you will learn more about the derivation of DC inductor design parameters, like:
the area product
the related energy
both the maximum and AC flux density
the core loss by using Steinmetz
and the copper loss by using Dowell’s equation
Video - Introduction to Magnetism - DC Inductor Design Procedure Explained - Part 3
Within this video, you will learn:
to work with the step-by-step design procedure of a DC inductor, as explained in the two previous videos, by looking at a DC inductor design example
REMARK: These videos are also available as a slideshow that contains the same content.
4. Exercises
exercises
Exercise 1 - Introduction to Magnetism - Ampère's Law
This exercise allows you to practice the basics of magnetism and learn how to apply Ampère’s Law.
Exercise 2 - Introduction to Magnetism - Hopkinson's Law
This exercise allows you to practice the basics of magnetism and learn how to apply Hopkinson’s Law.
Exercise 3 - Introduction to Magnetism - Faraday-Lenz's Law
This exercise allows you to practice the basics of magnetism and learn how to apply Faraday-Lenz’s Law.
Exercise 4 - Introduction to Magnetism - Steinmetz Parameter Curve Fitting
This exercise allows you to practice the basics of magnetism and learn how to determine the Steinmetz parameters necessary for magnetic core loss prediction.
5. Self-assessments
Self assessments
Self Assessment Exercise - Introduction to Magnetism - DC Inductor Design
This self-assessment allows you to practice the basics of magnetism and learn how to design a DC inductor based on the step-by-step design procedure.