VARIABLE SPEED DRIVES

VARIABLE SPEED DRIVES for Instrumentation and Control Systems

Dafam Fortuna Hotel, Yogyakarta | 23 – 26 Juni 2015 | IDR 7,000,000
Dafam Fortuna Hotel, Yogyakarta | 17 – 20 November 2015 | IDR 7,000,000

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 drives 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 drives 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 VARIABLE SPEED DRIVES

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

Dafam Fortuna Hotel Jl. Dagen 60 Malioboro Yogyakarta
19 – 22 January 2015
23 – 26 Maret 2015
23 – 26 Juni 2015
17 – 20 November 2015
4 days – 08 am – 04 pm

COURSE FEE

IDR 7,000,000.00 per participant non residential

FACILITY

Module / Handout Variable Speed Drives Training
Certificate
Souvenir
Training Kit

Formulir Permintaaan Informasi Lanjutan / Pra-Pendaftaran Public Training

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VARIABLE SPEED DRIVES