tandard Drives Saving energy with innovative electric drives
Automation and Drives Standard Drives Automation and Drives tandard Drives Saving energy with...
20
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!
-
Upload
madelynn-shackford -
Category
Documents
-
view
229 -
download
0
Transcript of Automation and Drives Standard Drives Automation and Drives tandard Drives Saving energy with...
- 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)
- Slide 7
- 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
- Slide 11
- 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]
- Slide 12
- 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
- Slide 18
- 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
- Slide 20
- Automation and Drives 21 February 2006 A&D SD Standard Drives The Cost Saving Motor from Siemens Thank You