Automation and Drives Standard Drives Automation and Drives tandard Drives Saving energy with innovative electric drives S We reserve the right to make technical changes!
Transcript
Slide 1
Automation and Drives Standard Drives Automation and Drives
tandard Drives Saving energy with innovative electric drives S We
reserve the right to make technical changes!
Slide 2
Automation and Drives 21 February 2006 A&D SD Standard
Drives Contents 1 (CEMEP - EU) - Background 2EPACT Main Objectives
3Comparison of EPACT / CEMEP Measures 3EPACT/ CEMEP Motors not
covered 4Measures 5Motor selection of efficiency 6Saving energy by
optimising the system 7Profiting from Energy-Saving Potential
8Checklist for EFF2 and EFF1 motors 9Mechanical efficiency
10Siemens Motor Sources
Slide 3
Automation and Drives 21 February 2006 A&D SD Standard
Drives EU CEMEP Background Background - Introduction of efficiency
classes acc. to CEMEP - EU After the example set by the USA with
the EPACT law, the EU is now taking the initiative in co-operation
with CEMEP 1) to implement measures for improving the efficiency
levels of electrical drives. Motive: Reduction of the emission of
CO 2. CEMEP prescribes efficiency classification for 2-pole and
4-pole motors in the power range from 1.1 to 90 kW. Efficiency is
subdivided into three classes so that 2 characteristic curves
define the three classes: "eff1" (High-efficiency motors) "eff2"
(Improved-efficiency motors) "eff3" (Standard motors) 1) CEMEP =
European Committee of Manufacturers of Electrical Machines and
Power Electronics; Efficiency determined as before according to EN
60034-2
Slide 4
Automation and Drives 21 February 2006 A&D SD Standard
Drives (Source: ZVEI brochure) : Electrical Drives: Cost savings
instead of regulation Voluntary Agreement (EU) Main motives for
efficiency classification The main objectives of the motor
manufacturers are : Increase in customer benefits by achieving
savings in energy costs Market transparency for customers and users
Facilitation of motor selection for the user
Slide 5
Automation and Drives 21 February 2006 A&D SD Standard
Drives Comparison of EPACT / CEMEP Law/ Voluntary commitment EPACT
- USACEMEP - Europe Status Motors covered Legally prescribed
minimum efficiency Voluntary undertaking to classify efficiency
drastically reduce EFF3 motors 2-, 4- and 6-pole 60 Hz
squirrel-cage motors 1 to 200HP (0.75 to150kW) 2- and 4-pole 50 Hz
squirrel- cage motors 1.1 to 90 kW Efficiency determined acc. to
Marking required IEEE 112 B Individual-loss procedure in acc. with
IEC 60034-2 Rating plate with Efficiency ( N ) and CC032A
Efficiency class on rating plate of motor N, 3/4 load and
efficiency class in documentation Efficiency ( Tol.) Tolerance in
acc. with IEC 60034-1 Nominal value N acc. to NEMA MG1
Slide 6
Automation and Drives 21 February 2006 A&D SD Standard
Drives Comparison of EPACT / CEMEP Motors not covered EPACT -
USACEMEP - Europe Motors 90 kW Motors > 4-pole Voltages and
frequencies different to 400 and 525 V 50Hz Special
motors/constructions Pole-changing motors Brake motors,
single-phase motors Variable-speed drives Force - cooled motors
Integrated geared motors Intermittent operation Special
environmental conditions Ex motors Hollow-shaft motors Motors 200
HP Motors > 6-pole Voltages and frequencies different to 230V,
460 V/ 60 Hz Motors with flange Special motors/ constructions
Pole-changing motors Brake motors, single-phase motors
Variable-speed drives Force-cooled motors Geared motors
Intermittent operation Partially and completely overhauled motors
NEMA - design C and D (i.e. MA > MK)
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Automation and Drives 21 February 2006 A&D SD Standard
Drives EPACT Rating plate Frenstat Efficiency class (CEMEP) 60 Hz
(EPACT) 50 Hz (CEMEP) Only when ordered as design UL (Option
D31)
Slide 8
Automation and Drives 21 February 2006 A&D SD Standard
Drives Measures Siemens and CEMEP, 4- pole
Slide 9
Automation and Drives 21 February 2006 A&D SD Standard
Drives EFF2 - Rotor EFF2 - Stator EFF1 - Rotor EFF1 - Stator
Measures Comparison of active components
Slide 10
Automation and Drives 21 February 2006 A&D SD Standard
Drives Measures Reducing individual losses Better quality of
laminations used Reduced magnetic stress Larger core assembly P Fe1
~ K Fe * B 2 B 2 ~ 1/ m 2 Fe INPUT Active power from mains OUTPUT
Mechanical output Winding resistance reduced due to larger wire
cross-section Winding resistance reduced due to larger rotor slots
(section geometry) P R Improved bearings and fans P CU1 ~ I 1 2 * R
1 P CU2 ~ I 2 2 * R 2 Stator Rotor Efficiency increase due to
better use of active materials
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Automation and Drives 21 February 2006 A&D SD Standard
Drives Voluntary Agreement (EU Project) Facilitation of motor
selection EU-efficiency classes for motors: High-efficiency
Improved- efficiency Standard The consequence: Siemens already
stopped producing EFF3-standard-motors and just produces the
energy-saving motors EFF1 and EFF2 instead Subdivision into three
efficiency classes according to the EU/CEMEP-agreement Trend [%]
[kW]
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Automation and Drives 21 February 2006 A&D SD Standard
Drives Saving energy by optimising the system Example: turbo
machine drive Flow control by throttle Power input Flow control by
rotational speed M Power input ~ ~ Transformer Motor Pump Throttle
valve Effective output X Losses in: Transformer Inverter Pump
Losses in: Motor M 100% 160% 281% 285% Effective output 100% 158%
160% 152% 142% 265%
Slide 13
Automation and Drives 21 February 2006 A&D SD Standard
Drives
Slide 14
Automation and Drives 21 February 2006 A&D SD Standard
Drives Profiting from the energy-saving potential Checklist for
choosing drives efficiently Always control the energy saving
balance. The purchase of a frequency converter for automatic speed
control will often be amortised shortly by saving energy. From 2000
operating hours per year on, energy-saving motors EFF1 generally
are the more economic alternative. For short operating times (e.g.
actuator) energy-saving motors EFF2 are sufficient. By exchanging
existing motors into energy-saving motors, the energy-costs
decrease. If the motor needs to be repaired, check, if it is more
economical to buy a new energy-saving motor.
Slide 15
Automation and Drives 21 February 2006 A&D SD Standard
Drives Efficiency Comparison at 100% and 75% of Rated Power
Slide 16
Automation and Drives 21 February 2006 A&D SD Standard
Drives Customer Benefits ENERGY SAVING Example: 1500kW, 2 pole,
6600V Motor (actual info) Siemens eff. 97.2% Comp. Eff. 95% Running
time: 24 hours per day, 365 days per Year Energy cost: R0,2 per kWh
Saving with an improved efficiency R62 612 pa
Slide 17
Automation and Drives 21 February 2006 A&D SD Standard
Drives Source of Supply - Imported Czech Republic, Mohelnice
Factory From 2.2 kW to 18,5 kW ( CI and Al type ) 100 to 160 Frame
size 2 to 8 pole 400V to 690 Statistics 1,91 million motors
manufactured annually 1800 employees ISO 9001 and ISO 14000
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Automation and Drives 21 February 2006 A&D SD Standard
Drives Source of Supply - Imported Czech Republic, Frenstadt
Factory From 22 kW to 250 kW 180 to 315 Frame size 2 to 8 pole 400V
to 690V Statistics 95 000 motors manufactured annually 800
employees ISO 9001 and ISO 14001
Slide 19
Automation and Drives 21 February 2006 A&D SD Standard
Drives of AC Motors acc. IEC and ANEMAANEMA 150 - 1340 HP 460 575 V
2 - 8 pole Squirrel cage Cast iron housing with cooling ribs
IP55/TEFC ODP, WP I, WP II, TEAAC/TEWAC (MV-motors with LV-winding)
H-compactIEC 200 - 3000 kW 2 - 11 kV 2 - 12 pole Squirrel cage Cast
iron housing with cooling ribs IP55 H-modyn IEC, ANEMA 7000 - 50000
kW 9390 67000HP 6 - 13.2 kV 2 - 12 pole Squirrel cage Synchronous
Base frame, Water cooling IP55, WP II Series1R.5/S.5IEC 7000 -
10000 kW 3.3 - 13.2 kV 4 - 24 pole Squirrel cage slip ring rotor
Synchronous Cast iron-/ Steel housing, cooler assembly IP55, WP II
Cast iron housing with cooling ribs N-compactIEC 200 - 1000 kW 400
- 690 V 2 - 8 pole Squirrel cage Cast iron housing with cooling
ribs IP23, IP55 H-compactPLUS IEC, ANEMA 1000 - 7000 kW 1340 9390
HP 3.3 - 13.2 kV 2 - 12 pole Squirrel cage Cast iron-/ Steel
housing, cooler assembly IP23, IP55, WP II Specialmotors 2000 -
65000 kW 690 V - 13.2 kV Squirrel cage synchronous Example: Motor
for main cooling pump ANEMA 150 - 2500 HP 0.2 11 kV 2 - 16 pole
Squirrel cage Cast iron housing with cooling ribs IP55/TEFC 200 -
10000 HP 0.2 - 13.8 kV 2 - 16 pole Squirrel cage Cast iron housing
cooler assembly ODP, WP I, WP II, TEAAC/TEWAC ANEMA
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Automation and Drives 21 February 2006 A&D SD Standard
Drives The Cost Saving Motor from Siemens Thank You