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EE - 89

5 days

Doha

29 October, 2023

11900 QAR

Electrical Motors & Drives: Protection, Maintenance & Troubleshooting for Industrial Applications

Course Overview

The course 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 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.

Course Objectives

By the end of this training, participants will be able:

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

Who Should Attend?

This course will benefit all levels of professionals in electrical installation. It will enable them to understand the operation, maintenance, and troubleshooting of AC motors and drives, also benefit for:

- Electricians
- Electrical supervisors
- Plant electricians
- Operations & maintenance engineers, supervisors & technicians
- Maintenance technicians

Course Content

Module (01) Introduction to AC Motors

Fundamentals of Rotating Machines Theory
Principles of Operation of AC motors
construction, Rotor Slip and Torque-Speed Characteristic
Single-phase and 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
Selection of AC motors for industrial applications and service factor
Medium voltage motors and applications

Module (02) 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
Standards and testing instruments

Module (03) 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

Module (04) Troubleshooting and Maintenance of Drives

Soft starters and selecting the correct VSD
VSD analyzers 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

Module (05) Protection of Motors and Drives

Protection of AC motors, requirement and overload protection
Fuses, circuit breakers, magnetic and thermal overload, and solid-state
Motor protection curves, backup protection
Protection of inverters and electronic converters driving motors
Case studies, selection, and design of systems and their protection

Electrical Motors & Drives: Protection, Maintenance & Troubleshooting for Industrial Applications

TRAINING PLAN FORM