This 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
• Trouble shooting and maintenance of variable speed drives
• Protection of motors and drives

By the end of this training course, participants should be able to:

• To define the operation and construction of AC electrical motors and the electrical drives based on modern state-of-the-art inverter technology, and their characteristics that need to be matched with those of loads
• Choosing the Best Type of Variable Frequency Drive (VFD)
• Explain the operating parameters of the Motor Control Centers and VFD's.
• Explain the reasons for routine maintenance of Motor Control Centers and VFD's.
• Explain the common maintenance tasks carried out on Motor Control Centers and VFD's.
• Select the appropriate tools and test equipment.
• Demonstrate how to evaluate and interpret performance of Motor Control Centers and VFD's.
• Demonstrate response to abnormal conditions and take action
• Properly Matching A Drive to A Machine
• Identify & Correct Drive System Problems
• Identify & Test Major Drive Components
• Perform Start-Up of an AC Drive
• Program & Adjust the Drive for Desired Operation
• To share case studies and learn from such experience
• To review maintenance procedures both for motors and drives following well-established industrial procedures as outlined in standards
• To illustrate with troubleshooting methods for both motors and drives following methodologies that have been developed by manufacturers in order to reduce downturn time dramatically
• To analyze and familiarize on how to utilize single-line drawings and other documentation to successful perform commissioning, maintenance and troubleshooting

This training course is suitable to a wide range of professionals but will greatly benefit for:

• Electrical & Instrument Engineers
• Electrical & Instrument Supervisors
• Maintenance Technicians & Manger
• Project Technicians & Manger
• Principal Electrical Equipment & Apparatus Maintenance Foreman
• Senior Electrical Equipment & Apparatus Maintenance Engineer
• Senior Electrical Equipment & Apparatus Maintenance Foreman
• Assistant Equipments & Appliances Maintenance Engineer
• Electrical Equipment & Apparatus Maintenance Foreman

This interactive training course includes the following training methodologies as a percentage of the total tuition hours:

• 25 % Class room Lectures
• PowerPoint
• Projector and white board
• 45 % In-Class exercise works and Practical Sessions (Simulation Software / Practical Exercises)
• Individual & Group Exercises
• Simulation Case
• 30 % Field Cases (any VFD brand)
• Check operation input output
• Check voltage apply and frequency input
• Check output values of Voltage and frequency ratio
• Check internal configuration of VFD
• Check Diodes by AVO
• Check thyristor by AVO
• Check DC link
• Measure Harmonics values
• Check the effect of Filters (in and out)
• Check loss connection effect
• Measure the values of heat produced from SCR

Module One:

• Pre-test
• Introduction to power system
• Power system Voltage levels According to IEC & IEEE
• Motor control circuits construction
• Ac Motor Types
• Idea of Operation AC Motor
• Medium Voltage AC motor construction
• AC Motor component
• Rotor
• Stator
• Bearing
• Coil winding
• Winding insulation level
• Electric insulation & Temp. insulation
• Motor Mechanical basics
• Developing a rotating magnetic field

 Module Two:

• MV Motor problems of starting
• Types of Motors start
• Direct on line
• Star / Delta System
• Auto transformer
• Stator Resistance
• Rotor Resistance
• Soft starter

Module Three:

• Introduction to power electronics
• Types of electronics switches and converters
• Difference between various types of VFDs
• VFD components
• Rectifier
• DC link
• Inverter
• VFD types
• VFD effect of Motor Operation
• Component Identification
• Variable Frequency drives parameter programming and applications

 Module Four:

• Power Electronic components
• Diode
• Rectifier Configuration
• 6 pulse rectifier
• Modern technology 12 , 18 & 24 pulse rectifier

 Module Five:

• Coil and capacitor configuration
• Effect of DC link
• Operations of DC link energy and inverters, regeneration or dynamic slowdown, dynamic breaking, plugging
• Sizing of capacitor effect

 Module Six:

• Thyristor (SCR), IGBT, MOSFET operation concept
• Thyristor (SCR), IGBT, MOSFET configuration
• Thyristor (SCR), IGBT, MOSFET, types
• Inverter configuration
• Pulse Width Modulation PWM concept
• Control of frequency
• Control of voltage
• V/F ratio control

 Module Seven:

• Control Mimic
• Space heaters & Cooling fan
• Control wiring
• LED induction lamp
• Line notching
• Harmonics
• Operator interfaces
• Bypass systems

BTS attendance certificate will be issued to all attendees completing a minimum of 80% of the total course duration.

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