VARIABLE SPEED DRIVESFOR INSTRUMENTATION AND CONTROL SYSTEMS

Jadwal Training 2013 Selanjutnya …

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.

OBJECTIVES

Understanding of how AC Variable Speed Drives (VSD’s) work
Install VSDs properly
Select the right VSD for a given application
Troubleshoot VSDs competently
Competently explain how flux-vector control works for drive applications
Understand squirrel cage induction motors
Identify the protection and control system requirements for VSD’s
Interface VSD’s with PLCs
Understand the causes of motor burnout
Deal effectively with VSD harmonics and EMC/EMI problems

OUTLINE

1. 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

2. 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

3. 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

4. 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

5. Protection Of Motors And Converters

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

6. 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

7. 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)

8. The Selection Of Ac Converters (Continued)

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

9. 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

INSTRUCTOR

Miftakhul Huda, ST M.Eng.

WHO SHOULD ATTEND?

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

DELIVERY TYPE

Lecturing, interactive discussion,and case study.

TIME

Jadwal Training 2013

15-17 Januari / 29-31 Januari / 12-14 Februari / 27 Februari – 1 Maret / 13-15 Maret / 25-27 Maret / 9-11 April / 24-26 April / 14-16 Mei / 29-31 Mei / 12-14 Juni / 26-28 Juni / 9-11 Juli / 23-25 Juli / 13-15 Agustus / 28-30 Agustus / 4-6 September / 25-27 September / 8-10 Oktober / 22-24 Oktober / 11-13 November / 27-29 November / 4-6 Desember / 17-19 Desember 2012
Jambuluwuk Boutique Hotel – Yogyakarta

FACILITIES

Training module
Stationeries: notebook and ballpoint
Training bag or backpack
1x lunch & 2x coffee break at days of training
Exclusive T-Shirt
Certificate
Training photo
Transportation for participants from the airport/railway station to hotel/training venue (Minimal number of participants from the same company is 2 persons)

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