VARIABLE SPEED DRIVES FOR INSTRUMENTATION AND CONTROL SYSTEMS
VARIABLE SPEED DRIVES FOR INSTRUMENTATION AND CONTROL SYSTEMS
Hotel Ibis, Yogyakarta | 7 – 9 February 2012 | IDR 6.500.000 per participant
Hotel Ibis, Yogyakarta | 6-8 March 2012 | IDR 6.500.000 per participant
Hotel Ibis, Yogyakarta | 14-16 Mei 2012 | IDR 6.500.000 per participant
Hotel Ibis, Yogyakarta | 05-07 June 2012 | IDR 6.500.000 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.
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.
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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