VFD Training Courses | Online VFD Training

This is the best among all VFD Training courses that you can find

  • Self paced e-learning course with download option.
  • Free exam and certification
  • Easy to understand graphics & animations – it is not just a video.
  • Real life examples and calculations.
  • Structured in 7 modules that cover everything that you need to understand.

Are you interested in knowing more about AC Variable Frequency Drives (known as VFDs for short)? These are also called by other names like  Variable Speed Drives, AC Drives, Inverter Drives, Frequency Drives, Adjustable Speed Drives and other similar terms. Our course will make you an expert in these drives.

A Variable Frequency Drive is an important part of any manufacturing plant or facility today. Nowadays you see them being increasingly used in all kinds of places, not just manufacturing plants and industries, but also in office buildings, warehouses and other commercial places.

It is very important that you get yourself trained on variable frequency drives. You can now easily do this online. Find out how below.

 The Abhisam VFD course gives you all that you need to easily learn and master Variable Frequency Drives. This excellent e-learning course is a great option for those who need drives training, but do not want to attend an in-person classroom training course.

We call it an XPRTU. (It makes you an expert).

Key Benefits of the Course

Earn Certificates and Badges

“I have worked in the International Oil and Gas Industry as a technical instructor for more than thirty years. I have both used and recommended the products of Abhisam. I recommend them highly to all engineers and technicians in our industry. No praise is too great!!
John Longden
GCGI LCGI. Senior Trainer
Petroleum Training Institute, UK

Who takes Abhisam courses?

Abhisam self paced e-learning courses are taken by learners from all over the world, including those from marquee companies like the ones below.

Choose from any of the versions.

Scroll below to see complete contents.


For one learner
$ 199
  • Course Duration: 10 hours of self paced learning (Earn 10 PDH)
  • Access the course online 24/7 via any device for one year
  • Exam & Certification for one learner
  • Lifelong Valid Certificate


For one learner
$ 299
  • Everything in Standard plus
  • Download course to any Windows 10 PC
  • 3 year license

Get Trial Access to all Abhisam courses, including this AC Variable Frequency Drives course for $7. You will NOT be billed automatically after trial ends.

Table of Contents

  • Welcome
  • Introduction to the Course
  • Introduction to AC Motor Drives
  • Better Load Matching
  • Focus on AC Motors
  • What you will learn
  • VFDs, VSDs, ASDs, VVVF Converters, Inverters
  • AC Motors-1
  • An ac induction motor
  • An AC Induction Motor working
  • Speed Control of ac induction motors
  • Speed of an AC Induction Motor
  • Power, Speed and Torque
  • Torque
  • Lifting Torque
  • Torque for different types of loads
  • Locked Rotor Torque
  • Motor characteristics and types
  • Design A Motor
  • Design B Motor
  • Design C Motor
  • Design D motor
  • Design E Motor
  • Which type is best for my application?
  • Load torque characteristics for different kind of loads
  • Load torque characteristics Animation
  • Classification of loads
  • Constant Torque loads
  • Variable Torque loads
  • Constant Power loads
  • Four Quadrant Operation
  • Overview of AC motor controls
  • DOL starter (Direct On Line starter)/Across the line starter
  • Star (Wye) and Delta connections
  • Control with a VFD
  • Why use VFDs?
  • Advantages of using a VFDs
  • Disadvantages of VFDs
  • Industrial applications of VFDs
  • Self Assessment Test
  • Introduction to the module
  • Overall Design
  • Rectifier Block
  • DC Link Block
  • Inverter Block
  • Controller Block
  • How it all works together
  • VFD parts & VFD components
  • Diode
  • Diode Curve
  • Switching frequency of diodes
  • Rectifier Circuits
  • Freewheeling Diode
  • Full Wave Rectifier
  • Three Phase Rectifiers
  • Rectifier Circuits-Representation
  • Thyristors (Silicon Controlled Rectifiers-SCRs)
  • Thyristor Firing Angle
  • Three Phase Thyristor Rectifiers
  • DC link block
  • Soft Charge Circuit
  • Inverter Block
  • Transistor (BJT)
  • Working model of a transistor
  • Transistor as an amplifier
  • Transistor as a switch
  • IGBT
  • Pulse Width Modulation
  • How does PWM work
  • PWM Waveform Generation
  • Changing the PWM amplitude
  • Changing the PWM frequency
  • Noise effects of PWM inverters
  • Self Assessment
  • Introduction to the module
  • Introduction
  • Schematic of a typical VFD
  • Starting/Stopping of the motor
  • Acceleration/Deceleration
  • Ramping
  • Speed Limits
  • Speed Changing
  • Forward/Reverse operation
  • Motor Thermal Overload Protection
  • Braking
  • Braking- Electrical or Mechanical?
  • Electrical Braking using VFDs
  • Motoring and regeneration
  • Braking Resistor
  • Dynamic Braking
  • Regenerative Braking
  • Slip Compensation
  • Application Example
  • Open Loop Control
  • Closed Loop Control
  • Control schemes in VFDs
  • V/f Control
  • Vector Control
  • Sensorless vector control
  • Flux Vector control (Closed loop)
  • Shaft encoders
  • PID Control
  • Anti-windmill protection and Flying Start
  • Skip Frequencies
  • Torque Control
  • How does DTC work?
  • Advantages and Disadvantages of DTC
  • Self Assessment
  • Energy Saving using VFDs
  • Types of Loads
  • Pumps, Fans and Blowers
  • Traditional flow control
  • Control of Centrifugal Pumps
  • Centrifugal Pump basics
  • Pump Characteristic Curve
  • System Curve
  • Operating Point
  • Throttling the flow
  • Control Valve
  • Effect of discharge throttling
  • Throttled Flow Curve
  • Energy Savings
  • Other energy savings due to VFDs
  • Shorter Duty Cycles
  • Self Assessment
  • Introduction
  • Selection Process Flowchart
  • Load considerations
  • Evaluate VFD benefits versus traditional motor controls
  • VFD features for maximum benefit
  • Derating of VFDs
  • Temperature Derating
  • Altitude Derating
  • Protection
  • Harmonics due to VFD installations
  • Total Harmonic Distortion
  • Problems due to harmonics
  • What could be the PCC? Says who?
  • Measurement of harmonics
  • Harmonics in PWM type drives
  • Mitigation of harmonics
  • Supply Voltages
  • Number of Starts
  • Fuse Disconnects & Bypasses
  • Bypass Circuit
  • Panels and Enclosures
  • Installation in Panels & Enclosures
  • Earthing
  • Maximum Cable lengths
  • Self Assessment
  • Introduction
  • Communication Networks
  • VFDs used in process plants
  • Digital Communication
  • Agitator Control via DCS Example
  • Implementation-1
  • DCS Configuration
  • Implementation-Option
  • Digital Communications
  • Profibus
  • Modbus
  • Functional Safety
  • Self Assessment

This a separate Self Assessment Test (other than the one in every module). This can be used to practice for the final Certification Exam.

Still Have Questions? No Problem, Here's A List Of Our Most Frequently Asked Questions (FAQ).

What is this? Is it just a power point presentation?

No, it is NOT a power point presentation at all! It is a full fledged, comprehensive e-learning course that we call as an XPRTU. It has text, graphics, animations, exercises that form a complete learning course.

How will I get access to the course?

The course is available in three versions. The Online Version gives you a one year access to the course via the internet via any browser. The Download version is a Windows program that you can download and install on your own Windows 10 machine.  The Enterprise version is ideal for organizations that need to train larger numbers .

What Operating Systems will it work on?

The Standard Download version will work on any Windows 10 PC. The Online and Enterprise versions are accessible from any device (including Macs) that have a browser.

How do I get  Certified?

Simply take the Abhisam online exam within the validity of the license period. On passing you get an Electronic Certificate (pdf) as well as a Badge  that you can display online on places such as LinkedIn or Facebook.

What is the ordering process?

When you click on the Buy Now button, you will be taken to the Fast Spring  secured payment site. Ordering is completely secure. You can pay online by either Credit Card or wire transfer/manual order. Note that you will get the license key to activate only after payment is approved.

Still Have Questions?

No Problem. Contact Us by filling the form below and we will get back to you.

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