24-01-2013, 11:19 AM
TRENDS IN POWER ELECTRONICS AND DRIVES
[attachment=48259]
Introduction
“Nearly 65% of the total electric energy
produced in the USA is consumed by electric
motors.”
- R. Krishnan, “Electric Motor Drives Modeling,
Analysis, and Control” Prentice Hall,Inc.,2001
Some Applications of Electric
Drives
Hard Disk Drive, Treadmill, Air conditioner
Pumps, fans, compressors
Spindles and servos
Appliances and power tools
Cement kilns
Paper and pulp mills; textile mills
Automotive applications
Conveyors, elevators, escalators, lifts
Drive System
Four distinct elements of a drive system are :
1. The load
2. The motor
3. The Power Electronic Converter
4. The Control Electronics
Drive system development challenges:
1. Power Density
2. Performance
3. Energy Efficiency
4. Cost
5. Time to Market
Analog Controllers
Advantages:
1.Low cost if the controller is simple
2.Easy Interpretation
Disadvantages
1.Reconfigurability of the control is not possible
without changing the hardware
2.Number of passive components used are more
3.More sensitive to variation in temperature
4.Reliability is low
Digital controllers using DSP and
Microcontrollers
Advantages:
1.Reconfigurability of the control without changing the
hardware
2.Less passive components are used
3.Less sensitive to temperature variations
Disadvantages:
1.The hardware resources are fixed and it cannot be changed
once the particular DSP/Microcontroller is selected
2.Design depends more on the hardware architecture of the
processor
ATLAS
ATLAS enables device technology
engineers to simulate the electrical, optical,
and thermal behavior of semiconductor
devices. ATLAS provides a physics-based,
easy to use, modular, and extensible
platform to analyze DC, AC, and time
domain responses for all semiconductor
based technologies in 2 and 3 dimensions.
MagNet
MagNet gives complete and accurate
electromagnetic field simulations.
Engineers can design, analyze and
optimize motors transformers
actuators or any electric or
electromechanical components
regardless of how complex.
MAXWELL
Ansoft offers the Maxwell SV to help engineering
students visualize electromagnetic fields and
broaden their understanding of electromagnetic
physics. The Maxwell SV is a subset of Ansoft's
commercially distributed Maxwell 2D. Students can
perform AC/DC electromagnetic and electrostaticfield
simulation without limitation
Future Scenario
Technology advancement, cost and size reduction are
promoting extensive application of drive system in
residential, Industrial and Transportation Systems
Boost in global industrial automation
Higher cost of energy and environmental regulation will
promote energy saving by Power Electronics
Wide growth of environmentally clean wind and PV Energy
Wide growth of Electric and Hybrid Vehicles as fuel cost
increases
Power Electronics will be a key technology like computers
[attachment=48259]
Introduction
“Nearly 65% of the total electric energy
produced in the USA is consumed by electric
motors.”
- R. Krishnan, “Electric Motor Drives Modeling,
Analysis, and Control” Prentice Hall,Inc.,2001
Some Applications of Electric
Drives
Hard Disk Drive, Treadmill, Air conditioner
Pumps, fans, compressors
Spindles and servos
Appliances and power tools
Cement kilns
Paper and pulp mills; textile mills
Automotive applications
Conveyors, elevators, escalators, lifts
Drive System
Four distinct elements of a drive system are :
1. The load
2. The motor
3. The Power Electronic Converter
4. The Control Electronics
Drive system development challenges:
1. Power Density
2. Performance
3. Energy Efficiency
4. Cost
5. Time to Market
Analog Controllers
Advantages:
1.Low cost if the controller is simple
2.Easy Interpretation
Disadvantages
1.Reconfigurability of the control is not possible
without changing the hardware
2.Number of passive components used are more
3.More sensitive to variation in temperature
4.Reliability is low
Digital controllers using DSP and
Microcontrollers
Advantages:
1.Reconfigurability of the control without changing the
hardware
2.Less passive components are used
3.Less sensitive to temperature variations
Disadvantages:
1.The hardware resources are fixed and it cannot be changed
once the particular DSP/Microcontroller is selected
2.Design depends more on the hardware architecture of the
processor
ATLAS
ATLAS enables device technology
engineers to simulate the electrical, optical,
and thermal behavior of semiconductor
devices. ATLAS provides a physics-based,
easy to use, modular, and extensible
platform to analyze DC, AC, and time
domain responses for all semiconductor
based technologies in 2 and 3 dimensions.
MagNet
MagNet gives complete and accurate
electromagnetic field simulations.
Engineers can design, analyze and
optimize motors transformers
actuators or any electric or
electromechanical components
regardless of how complex.
MAXWELL
Ansoft offers the Maxwell SV to help engineering
students visualize electromagnetic fields and
broaden their understanding of electromagnetic
physics. The Maxwell SV is a subset of Ansoft's
commercially distributed Maxwell 2D. Students can
perform AC/DC electromagnetic and electrostaticfield
simulation without limitation
Future Scenario
Technology advancement, cost and size reduction are
promoting extensive application of drive system in
residential, Industrial and Transportation Systems
Boost in global industrial automation
Higher cost of energy and environmental regulation will
promote energy saving by Power Electronics
Wide growth of environmentally clean wind and PV Energy
Wide growth of Electric and Hybrid Vehicles as fuel cost
increases
Power Electronics will be a key technology like computers