This training course will benefit all levels of professional in an electrical installation. It will enable them to understand the operation, maintenance and troubleshooting of AC motors and drives
This training course is suitable for a wide range of technical professionals but will greatly benefit:
This training course in Dubai covers all topics relating to both AC motors and their drives. AC motors represent the industry's workhorse in all applications. It is no exaggeration to suggest that more than half of the energy consumed worldwide is converted by AC motors into work and these are controlled by drives.
Understanding maintenance and troubleshooting procedures of such vital industrial equipment means that reduced downtime and increased productivity for the company. The protection is a requirement along with their function and integration with the overall system ensures that such expensive apparatus is well guarded against failures which further offer safety for operations personnel as well.
This training course will feature:
Understanding types of AC motors and their starting methods
Principle of operation of variable speed drives
Identification of the various types of variable speed drive
Troubleshooting and maintenance of variable speed drives
Protection of motors and drives
Objectives
By the end of this training course, participants will be able to:
Understand the various types of AC motors and starters
Determine the components and operations of variable speed drives
Explain the different types of variable speed drives
Analyze the common faults in a variable speed drive
Design the protection requirements for motors and drives
Methodology
This training course will utilise a variety of proven adult training techniques to ensure maximum understanding, comprehension and retention of the information presented. This includes presentation and discussion of latest videos and technologies on variable speed drives.
Questions are encouraged throughout, particularly at the daily wrap up sessions. This provides opportunities for participants to discuss with the Presenter specific issues and, if possible, find appropriate solutions. Specific goals of each participant will be discussed to ensure that their needs are fulfilled whenever practicable.
Course Outline
Day One: AC Motors
Fundamentals of rotating machines theory, principles of operation of AC motors and their construction, rotor slip and torque-speed characteristic
Three-phase AC induction motors, types, construction, characteristics and applications
Starting of induction motors and associated techniques and acceleration
Speed control requirements of AC motors
Selection of AC motors for industrial applications and service factor
Medium voltage AC motors and applications
Day Two: Troubleshooting and Maintenance of Motors
Characteristics of motors, enclosures and cooling methods
Predictive maintenance, motor troubleshooting and diagnostic testing
Failures in three-phase stator windings, rewind scenarios when a motor fails
Troubleshooting and maintenance of AC motors, routine care
Slow acceleration or refusal to starting of an AC motor, overheating and noise
Modern motor diagnostics and testing instruments
Day Three: Drives
Fundamental principles and understanding of AC Variable Speed Drives
Power semiconductors, diode, thyristor (SCR), IGBT, MOSFET, GTO and others.
Voltage-source, current-source and pulse width modulated (PWM) inverters
Benefits and applications of VSD
Two-level PWM, regeneration and dynamic braking, volts per hertz control
Medium voltage VSDs, switching transients, harmonics and power factor
Day Four: Troubleshooting and Maintenance of Drives
Soft starters and selecting the correct VSD
VSD analysers for converter failures, inverters and rectifiers
Troubleshooting techniques and maintenance for VSD
VSD parameter guidelines and settings
VSD bearing failures and remedies
Testing instruments and scope meters for VSD
Day Five: Protection of Motors and Drives
Importance of protection of AC motors requirement and overload protection
Motor overload relay classes
Numerical relays and motor protection
Protection of inverters and electronic converters in VSDs
Case studies, selection, and design of systems and their protection
