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Variable Frequency Drive (VFD), How it Works?

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🌀 Exploring VFD: Uncover the Tech Magic 🌀

Welcome back to our YouTube channel! Ever wondered how electric motors work and power the machines that drive our businesses and pleasures? They run on electricity, but there’s a smart solution that not only saves energy but also reduces maintenance costs – it’s called an AC Drive.

💡 What’s a VFD – Variable Frequency Drive? 💡

Discover the world of VFD technology, also known as variable speed drives (VSD) or variable frequency drives (VFD). We’ll take you through its core principles, and how it’s placed between the electrical supply and the motor to regulate power, enabling efficient operation.

⚙️ Unleashing the Power of VFD Technology ⚙️

Now, let’s delve into the workings of a Variable Frequency Drive. You’ll understand how three phases feed into the VFD, where diodes in the rectifier create a DC power supply. The DC power is then transformed into a clean AC power supply with the help of an inverter, controlled by electronic switches. We’ll break down this process, revealing how VFDs manage to save energy and run systems efficiently.

🔧 Benefits of VFD – Energy Efficiency Unleashed 🔧

The VFD isn’t just a technical marvel; it’s a practical solution too. We’ll explore its real-world applications, such as controlling water pumps in treatment plants, where operators can fine-tune the motor speed according to demand. The magic continues as we highlight how VFDs can be seamlessly integrated with PLCs using communication protocols like RS 232 and RS 485, making processes more efficient.


Videos that you should watch in order to have the basic knowledge to understand the Working Principles of Variable Frequency Drive or VFD.
[1] How Electricity Works? – Electricity Explained – https://youtu.be/zqapTlJJWEo
[2] Understanding the Basics of Series and Parallel Circuits: A Beginner’s Guide – https://youtu.be/UL2xyIayOQg
[3] How Inverter Works? – Power Inverters Explained – https://youtu.be/_O-1Fgc_xUg


[1]✊ Become a channel member: https://www.youtube.com/channel/UCUGsMIdvF7TOX_riaBFSvnw/join
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Engineering is an exciting field, as well as a challenging one. Like many fields, many people wish to learn and grow from within. This is where class=”mention-chip ytcp-social-suggestion-input” spellcheck=”false” href=”https://studio.youtube.com/channel/UCUGsMIdvF7TOX_riaBFSvnw”> @chrvoje_engineering  comes in. The goal of the  @chrvoje_engineering  channel offers engineering videos for everyone. ⌚


00:00 –  @chrvoje_engineering  INTRO
00:06 – General info about Variable Frequency Drive (VFD)
01:12 – General about basic parts: Rectifier, DC BUS (Filter), and Inverter
02:39 – Function of Rectifier (Role of diodes in Rectifier)
05:41 – Function of DC BUS (Filter) (Role of Capacitor in DC BUS (Filter))
06:17 – Function of Inverter (Role of IGBTs in Inverter)
08:05 – Pulse Width Modulation (How to control output Voltage and Frequency in Variable Frequency Drive (VFD)
09:55 – Working Principle of Variable Frequency Drive (VFD) summarized
10:45 – Where Variable Frequency Drive (VFD) is used? – Wastewater Treatment Plants (PLC Automation)
11:51 –  @chrvoje_engineering  END


[1] Internet of Things
[2] Variable Frequency Drives Explained – VFD Basics IGBT inverter – https://www.youtube.com/watch?v=yEPe7RDtkgo&t=641s [3] What is VFD, How it works? – VFD working principle – http://www.vfds.org/what-is-vfd-how-it-works-964803.html
[4] Variable Frequency Drives Explained | VFD Basics – https://realpars.com/variable-frequency-drive/
[5] What is a variable frequency drive? – https://www.danfoss.com/en/about-danfoss/our-businesses/drives/what-is-a-variable-frequency-drive/


Research and content writing took about a week. 3D Animation and Video editing took me cca 3-4 months. The script is made from a reference source by Hrvoje Cocic


[1] Electricity – Energy Explained – https://www.youtube.com/playlist?list=PLKDDPHypZkIX92yiT7Dk4z64_F810gw6W
[2] Electrical Machines – https://www.youtube.com/playlist?list=PLKDDPHypZkIU0uaNFi8uA69C_xjnPUrob


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This software is very “user-friendly” and not so hard to use, I recommend it to everyone.
✅3D ANIMATION/RENDERING: 3D max 2015, Vray 3.0
✅ VIDEO EDITING: Adobe After Effects, Adobe Premier
✅ VOICE EDITING: Adobe Audition


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