Motor & VFD Principles

Upcoming Motor & VFD Courses in 2025

May: Thursday, June 03, 2025.

November: Thursday November 13th, 2025.

Course Outline

Electric motors are a key driver within a plant’s rotating machinery applications. Safe and reliable operation, of the electric motor and the components that control them, are key to plant success. With the industry’s push for more efficient systems with higher automation, the requirement to use electric motors with VFDs is becoming more popular. This course will educate the participant on the general function, application, installation, maintenance and troubleshooting of the electric motor and VFD as a system. It will also cover the interaction the motor and the VFD have with key turbo machinery applications.

  • Motor 
    • General Function
      • Motor Operation
      • Motor Components
      • Accessories
      • Efficiency
      • Industry Standards (NEMA/IEC)
    • Application Considerations
      • Service Factor
      • Installation System
      • Motor Torque Curves
      • Load Types
      • Starting
      • Enclosure
      • Mounting
    • Installation
      • Protective Devices
      • Mechanical Installation
      • Start-up and Commissioning
      • Grounding
    • Maintenance and Troubleshooting
      • Safety
      • Maintenance Schedules
      • Long-Term Storage
      • General Troubleshooting Techniques
      • Power Quality
  • Drive 
    • General Function
      • Terms
      • System Architecture
      • Voltage Class
    • Application Considerations
      • Environments
      • Electrical System
      • VFD Features
      • Harmonics
    • Installation
      • Cooling
      • Environment
      • Grounding
      • Power Quality (Input and Output)
      • Controlling of VFD
      • Powering VFD (TVSS, SPD, CB/Fuses) (Open Delta, Corner Grounded)
      • Motor Cables
      • Cable Routing
    • Maintenance and Troubleshooting
      • Safety
      • VFD Diagnostics
      • Preventative Maintenance
  • Power Drive System 
    • General Function
      • Definition of PDS
      • General interaction
      • Interaction with driven equipment
      • Why to use a PDS
      • Industry Standards (NEMA /IEC)
    • Application Considerations
      • Motor considerations with PWM
      • Sizing drives for motors
      • Sizing Motors for application
      • Special transmission considerations
      • Resonance
      • Speed range
      • Duty cycle
      • Feedback options
      • Efficiency with variable speed
    • Installation
      • Power quality
      • Cabling
      • Grounding
      • Protective Devices
      • Mechanical Installation
      • Start-up and Commissioning
    • Maintenance and Troubleshooting
      • Safety
      • PDS maintenance considerations
      • General Troubleshooting Techniques