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الأهداف
At the end of the course participants will be:
- Understand AC & DC motor operation and construction
- Specify, select and install motors
- Specify protection requirements for motors
- Install and commission motors
- Fix faults on motors
- Interpret motor performance curves
- Interface control circuits of motors with PLCs/DCSs
- Reduce downtime on electrical motors
- Improve plant safety
- Improve plant throughput
- Reduce your spares usage and requirements
الخطوط العريضة
Day 1:
FUNDAMENTALS OF MOTOR TECHNOLOGY
DC MOTOR THEORY, CONSTRUCTION AND MAINTENANCE
- Basic construction and physical configuration and windings
- Principles of operation and performance
- Theory of operation
- Types of DC motors
- Separately excited motors
- Series motors
- Shunt motors
- Compound motors
- Long compound motors
- Short compound motors
- Insulation and cooling requirements
Day 2:
AC MOTOR THEORY, CONSTRUCTION AND MAINTENANCE
- Basic construction and physical configuration and windings
- Principles of operation and performance
THREE PHASE AC INDUCTION MOTORS
- Components
- Theory of operation
- Induction motor design
- Duty cycles
- Insulation and cooling requirements
- Starting methods
- Selecting motors
- Maintenance of AC machines
- Types of faults, fault finding and testing of AC machines
- Testing instrumentation
Day 3:
PROTECTION OF DC & AC MOTORS
- Protective devices
- Thermal overload
- Over current/overload
- Under-voltage/over-voltage
- Under frequency for AC machine
- Current unbalance for 3-phase machine
- Earth fault protection
- Pole slip/out of step
- Stall protection/acceleration time/start
Day 4:
SPEED CONTROL OF ELECTRICAL MOTORS
- DC Motor Control
- Induction Motor Control
- Introduction to variable speed drives or
- power electronic converters
- Types and designs of variable speed
- Synchronous Motor Control
- Resonance
- Reluctance Machine (Concepts and Torque & Current of RM)
- Stepping Motors (Concepts and Torque & Current of Stepping Motors)
THE SELECTION OF AC CONVERTORS FOR VARIABLE
- SPEED DRIVE APPLICATIONS
- Selection procedure
- Nature of the load
- Selection of correct size motor and converter
Day 5:
Maintenance and Troubleshooting of Motors
- Characteristics of motors
- Enclosures and cooling methods
- Design characteristics
- Insulation of AC motors
- Failures in three-phase stator windings
- Predictive maintenance
- Motor troubleshooting
- Diagnostic testing for motors
- Repair and refurbishment of AC induction motors
- Motor Temperature Classification
- Motor Insulation Classification
- Frame classification
- Variable speed drives ( VFD - Frequency controllers Principle of operation )
- Vibration analysis •
من ينبغى أن يحضر
Typical personnel who would benefit are:
- Plant Engineers
- Operations Personnel
- Electrical Maintenance Technicians
- Mechanical Engineers
- Service & Maintenance Technicians
- Electrical Maintenance Supervisors
المدة
5 أيام
