ing. jan smets
TRANSCRIPT
Ing. Jan SmetsAtlas Copco
“Frequentiegestuurdepersluchtinstallaties"
Topics
• Why
• Which applications/sizes
• How
• Benefits
• Next step
You know what these numbers are all about?
Directive 2012/27/EU
4
20/20/20 targets by 2020 (reference year 1990)▶ 20% energy consumption
▶ 20% greenhouse gas levels
▶ 20% share of renewable energy
Directive 2012/27/EU
5
4 Focus area’s▶ Public sector
▶ Consumers
▶ Energy sector
▶ Industry
Mandatory audits for large companies ( 3 years) & incentives for the implementation
of recommended measures
Introduction of Energy Management Systems & Standards
– ISO 5001 – Energy Management
– ISO 11011 – Compressed air systems, Energy efficiency assesments
(Member States to create incentives to undergo energy audits)
Let’s try another one
9
Market structure Oil-injected screw compressors
Market size in units Unit
value
Power30 kW
Leadership in sustainable productivity: VSD
10
One last one
Solution?
Did you know that
VSD compressors from
Atlas Copco
saved100 million KWh
of electricity inBelgium alone sinceit was launched ?
13
14
VSD techniques used
Most compressor manufacturers offer VSD today…
• Standard induction motor with separate converter
• Standard induction motor with integrated converter
• Brushless DC motor with switched reluctance drive
• Hybrid permanent magnet motor
• Motor designed for application with integrated converter
• AC motor
• iPM motor (interior permanent magnet)
The Variable Speed Drive compressor
• 1994
• Revelation in energy savings, total cost of ownership
• 1 in 3 oil-injected screw compressors sold by Atlas Copco is a variable speed drive
• 35% on average
15
Laborelec tests: May-October '97
Reliability through design & Experience
Oil injected screw compressor - Flow chart
Compressor load
%100%0
Power consumption
100%
0
25..30%
20..25%
VSD
Best efficiency speed range
3..4 %
drive losses
2.5% ..5% pressure band Saving
GA VSD Advantage – Superior Regulation
VSD
Load-Unload
GA45VSD+ GA45VSD C111 GA45+ FS
SER J/l
FAD l/s
GA 45 VSD
GA 45 VSD+
GA 45+
Benefits• Energy up to -50%
• Tighter process control
• Extend life time
• Larger uptime
• Off peak incentives by utility companies
• Smaller installation (peak currents, air receivers, …)
• Less leaks due to lower working pressure
Efficiency ratings HOW
Frequency
convertor
Drive motor
Elektronikon®
MK V
Compressor
screw
elementFAD
Pressure
sensor
Customer
air net
RS-485
U & f
Power
Supply
Electrical cabinet Compressor cabinet
GA xx VSD
GA VSD - Efficiencies
Frequency
convertor
Drive motor
Elektronikon®
MK IV
Compressor
screw
elementFAD
Pressure
sensor
Customer
air net
RS-485
U & f
Power
Supply
Electrical cabinet Compressor cabinet
GA xx VSDIEC 60034-30
International standard for motor efficiencies
GA VSD - Efficiencies
Frequency
convertor
Drive motor
Elektronikon®
MK IV
Compressor
screw
elementFAD
Pressure
sensor
Customer
air net
RS-485
U & f
Power
Supply
Electrical cabinet Compressor cabinet
GA xx VSD
EN 50598 -
Efficiency ratings for CDM’s (complete drive modules)
IE ratings
Efficiency ratings for PDS’s (Power drive systems)
IES ratings
GA VSD(+) - Efficiencies
Frequency
convertor
Drive motor
Elektronikon®
MK IV
Compressor
screw
elementFAD
Pressure
sensor
Customer
air net
RS-485
U & f
Power
Supply
Electrical cabinet Compressor cabinet
GA xx VSD
Drive losses
Element losses
Pressure drops
Operating temperatures (cooling)
ISO 1217 ed 2009 ANNEX 4
Acceptance test for packaged electrical dispplacement compressors with variable drive
Next step?
• Overall mandatory efficiency ratings ?
• Meantime: CASE² !!• Compressed Air System Energy Efficiency
• Compliant with ISO 11011
