VARIABLE SPEED DRIVES for Instrumentation and Control Systems 
Yogyakarta | 30 April 2012 | IDR 7,000,000.00 per participant
Yogyakarta | 03 May 2012 | IDR 7,000,000.00 per participant
Yogyakarta | 03-06 September 2012 | IDR 7,000,000.00 per participant

DESCRIPTION

It is estimated that electrical drives and other rotating equipment consume about 50% of the total electrical energy generated in the world today. Other estimates are that pumps, fans, blowers and compressors consume as much as 65% of this total. A large proportion of these applications are powered by fixed or constant speed drivers whose load demands often fluctuate. This poor match of speed and demand results in considerable wasted energy and significantly increased wear of system components. Variable speed drive technology is a cost effective method to match driver speed to load demands and is an excellent opportunity to reduce operating costs and improve overall efficiencies in your application. This course gives you a fundamental understanding of the installation, operation and troubleshooting of variable speed drives. Typical practical applications of VSDs in process control and materials handling, such as those for pumping, ventilation, conveyers, compressors and hoists are covered in detail. You will learn the basic setup of parameters, control wiring and safety precautions in installing a VSD. The various drive features such as operating modes, braking types, automatic restart and many others will be discussed in detail. You will learn the four basic requirements for a VSD to function properly with emphasis on typical controller faults, their causes and how they can be repaired. The concluding section of the course gives you the fundamental tools in troubleshooting VSDs confidently and effectively. Even though the focus of the course is on the direct application of this technology, you will also gain a thorough understanding of the problems that can be introduced by VSDs such as harmonics, electrostatic discharge and EMC/EMI problems.

YOU WILL LEARN HOW TO

•  The principles of AC variable speed drives for industrial speed control
• About squirrel cage induction motors
• About the latest developments in power electronic converters used for VSDs
• How to select the correct AC variable speed drive for industrial applications
• About installation and commissioning requirements
• How to identify faults on VSDs and how to rectify them
• About Flux-Vector Control and how it can be used in drive applications
• How to interface the control circuits of VSDs with PLCs/DCSs using Serial Data   Communications

WHO SHOULD ATTEND

Anyone associated with the use of Variable Speed Drive techniques in the industrial or automation environment. The workshop will also benefit those working in system design as well as site commissioning, maintenance and troubleshooting. Typical personnel who would benefit are:

• Plant Engineers
• Instrument and Control Engineers
• Instrument Technicians
• Process Control Engineers
• Operations Personnel
• Mechanical Engineers
• Maintenance Personnel
• Service Technicians
• Electrical Maintenance Technicians and Supervisors

SUMMARY OUTLINE

INTRODUCTION TO VARIABLE SPEED DRIVES

• The Need for Variable Speed Drives
• Fundamental Principles of Speed Control
• Efficiency, Torque, Inertia, Horsepower/Power Factor
• Torque-Speed Curves
• How the motor produces Torque
• Types of Variable Speed Drives

3-PHASE AC INDUCTION MOTORS

• Basic Construction and Physical Configuration
•  Principles of Operation and Performance
•  Equivalent Circuit and Fundamental Equations
• Starting, Acceleration, Running and Stopping
•  Power, Torque and Thermal Rating

POWER ELECTRONIC CONVERTERS

•  Definitions and Basic Principles
• Power Diodes and Thyristors
• Principles of Communication
• Power Electronic Rectifiers
• Power Electronic Inverters
•  Gate Commutated Converters
• Gate Controlled Devices – GTO, FCT, GTR, FET, IGBT

ELECTROMAGNETIC COMPATIBILITY (EMC)

• Sources of Electromagnetic Interference
• Harmonics on the Power Supply side of AC Converters
•  The Effect of Harmonic Distortion on other connected Equipment
• Methods of reducing the effect of Supply side Harmonics
• Electric Motor Protection
• Thermal Overload Protection – Current Sensing
• Thermal Overload Protection – Direct Temperature Sensing

PROTECTION OF MOTORS AND CONVERTERS

•  AC Frequency Converter Protection
• Fault Diagnostics
•  Electric Motor Protection
• Thermal Overload Protection – Current Sensors
• Thermal Overload Protection – Direct Temperature

CONTROL SYSTEM FOR AC VARIABLE SPEED DRIVES

• The Overall Control System
• Power Supply to the Control System
• DC Bus Charging System
•  VSD Control Loops (Open-Loop, Closed-Loop)
•  Vector control and its applications
• Current Feedback in AC Variable Speed Drives
•  Speed Feedback from the Motor

THE SELECTION OF AC CONVERTERS FOR VARIABLE SPEED DRIVE APPLICATIONS

• The Basic Selection Procedure
• Loadability of Converter Fed induction Motors
• Operation in the Constant Power Region
•  The Nature of the Machine Load
• Starting and Stopping VSDs (Motor Braking)
•  How to Calculate Acceleration Torques and Times
• How to Select the correct Motor and Converter for Pump and Fan Loads
•  How to Select the correct Motor and Converter for Constant Torque Loads, such as conveyors
• Summary of the Selection Procedure

INSTALLATION AND FAULT FINDING TECHNIQUES

• General Installation and Environmental Requirements
• Power Supply Connections and Earthing
• Where to install the Contactors in the Power Circuit
• Installing AC Converters into Metal Enclosures

SPECIAL TOPICS

• PWM Rectifier for AC Converters
• Soft Switching
•  The Matrix Converter

COURSE SPEAKER

Teguh Santoso, Ir
Teguh Santoso experienced more than 26 years in Electrical.

COURSE METHODE

• Presentation
• Discuss
• Case Study
• Evaluation
• Simulation

TIME & VENUE

• Yogyakarta,
• 30 April 2012
• 03 May 2012
• 03-06 September 2012
• 4 days – 08 am – 04 pm

COURSE FEE

IDR 7,000,000.00 per participant non residential

FACILITY

• Module / Handout
• ,Certificate
• ,Souvenir
• ,Training Kit

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Updated By Admin2 • February 7, 2012