Course Description
On completion of this Averest training course participants will be able to perform maintenance and troubleshooting of AC motors, VFD and soft starters. This will enable them to understand the operation of the components in the VFD and benefits.
What Do Participants Learn?
- Understand the factors controlling the speed of an induction motor
- Explain the construction and operation principles of VFD
- Determine the benefits of the VFD
- Understand the VFD technologies
- Explain the importance VFD maintenance
Who Should Attend?
- Electrical engineers
- Maintenance technicians
- Management professionals
- Project engineers
What Will the Learning Experience Include?
Phase: 1
Introduce
- Comprehensive pre-program activities include:
- Web-based information forms & surveys completed by attendee.
- Direct consultation with the attendee about the expectations.
- During the training, participants engage in data, activities, and conversations that lead to insight and knowledge.
- Participants learn from expert trainers who have both academic and business experiences.
- Highly applicable training content & instructive activities for adding depth to training topics.
- **A half-day site visit for integrating the experience & plan next steps. Opportunities to provide connections, ideas & support.
Phase: 2
Explore & Practice
Phase: 3
Apply
- Apply & sustain the learning experience by using this ongoing support:
- To ensure participant has new skills or behavior progress.
- Optional, fee-based mentoring & coaching with the trainer.
- Training materials & additional documents (e-books, pdf files, presentations and articles)
- Evaluate your training experience by giving us feedbacks and help us to reach our organizational goals.
- Participant's Evaluation
- Trainer's Evaluation
Phase: 4
EVALUATE
Section One: – FUNDAMENTALS OF THREE PHASE AC MOTORS, STARTERS AND FACTORS CONTROLLING SPEED
- Three-phase AC motors, types, construction, characteristics and applications
- Starting of induction motors and associated techniques and acceleration
- Speed control requirements of AC motors and load matching
- Soft starters characteristics
- Selection of AC motors for industrial applications and service factor
- Medium voltage motors and applications
Section Two: – CONSTRUCTION AND OPERATIONS OF VARIABLE FREQUENCY DRIVES
- Fundamental principles and understanding of VFDs
- Power semiconductors, diode, the thyristor (SCR), IGBT, MOSFET, GTO and others.
- Voltage-source, current-source and pulse width modulated (PWM) inverters
- Benefits and applications of VFD
- Two-level PWM, regeneration and dynamic braking
- Medium voltage VFD
Section Three: – CHARACTERISTICS AND FUNCTIONALITIES OF PULSE WIDTH MODULATION
- The rectification process
- The DC bus process and functionalities
- The inverter types, process and functionalities
- Volts per hertz operation
- The Megadrive -Load commutated inverters
- PWM technology in Megadrive-LCI
Section Four: – TROUBLESHOOTING AND MAINTENANCE OF DRIVES
- Soft starters and selecting the correct VFD
- VFD analyzers for converter failures, inverters and rectifiers
- Troubleshooting techniques and maintenance for VFD
- VFD parameter guidelines
- VFD parameter settings and settings
- VSD bearing failures and remedies
Section Five: – MAINTENANCE AND TESTING INSTRUMENTS FOR VFD
- Importance of maintenance
- Testing instruments and ScopeMeters for VFD
- Shaft ground rings
- Protection of inverters and electronic converters driving motors
- Case studies, selection and design
- Q&A and wrap up session