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© Siemens AG 2012.
Mauricio Gómez
Accionamientos eficientes para aplicaciones minería
M.Sc Mauricio GómezE-mail: mauricio.gomez@siemens.com
Energy Efficiency
Antofagasta, Julio 2012
© Siemens AG 2012.
Mauricio Gómez
•Ejemplos de aplicación (sinasave)
Temario
•Alcances
•Antecedentes y regulación
•Eficiencia en motores y portafolio
•Eficiencia variadores + motor
© Siemens AG 2012Industry SectorMauricio Gómez
Energy Efficiency Reasons
EnvironmentPrices / costsLegislation and standardsIncreasing energy costsDemand for a higher degree of productivity
Climate change
© Siemens AG 2012Industry SectorMauricio Gómez
Energy Saving Cost Break-Down
The percentage of energy in the complete costsfor a motor in operation is greater than 95%.
12 15 20 Stat. motor lifetime
Source: Stat. motor lifetime DKI information brochure 09/99, Page 10
PurchaseInstallation&
Maintenance
Operation:
Energy
Costs for a motor
Rated power [kW]
© Siemens AG 2012Industry SectorMauricio Gómez
Energy Saving Potential
Electric drive systems represent approx. 70 % of industrial power consumption
Source: ZVEI 2006 / Siemens Large Drives 2010
© Siemens AG 2012Industry SectorMauricio Gómez
Electric drive systems represent approx. 70 % of industrial power consumption
Sou
rce:
ZV
EI 2
006
Cost-saving possibilities through: Avoids:
Percentage component of the total energy-saving potential
Environment-friendly and cost-effective production by lowering the operating costs
high efficient motors
efficient drives
mechanical system optimization
CO2 savings 2000 - 2010
© Siemens AG 2012.
Mauricio Gómez
•Ejemplos de aplicación (sinasave)
Temario
•Alcances
•Antecedentes y regulación
•Eficiencia en motores y portafolio
•Eficiencia variadores + motor
© Siemens AG 2012Industry SectorMauricio Gómez
Background - Introduction of efficiency Classes acc. to CEMEP
After the example set by the USA with the EPACT law, the EU took the initiative in co-operation with CEMEP1) to implement measures for improving the efficiency levels of electrical drives. Motive: Reduction of the emission of CO2.
CEMEP described efficiency classification for 2-pole and 4-pole motors in the power range from 1.1 to 90 kW. Efficiency was subdivided into three classes so that 2 characteristics define the three classes: – "eff1" (High-efficiency motors)– "eff2" (Improved-efficiency motors)– "eff3" (Standard motors)
The Europe Union develop new standard IEC 60034-30: 2008 and defines efficiency classes for 50 and 60 Hz and stipulates, worldwide, which motors are involved and which exceptions apply. The EU Regulation is essentially based on this standard.
1) CEMEP = European Committee of Manufacturers of Electrical Machines and Power Electronics; Efficiency determined as before according to EN 60034-2
© Siemens AG 2012Industry SectorMauricio Gómez
Efficiencies Initial Situation Worldwide
Goal of IEC 60034-30 Unification to ONE worldwide efficiency standard
USA, Canada & Mexico (NEMA)
Europe (CEMEP)
Russia (GOST)
Japan (JIS)
Taiwan (CNS)
Korea (KEMCO)
China (CCC)
Australia (AS/NS)
South Africa (SABS)
India (IS)
Brazil (ABNT)
© Siemens AG 2012Industry SectorMauricio Gómez
Which asynchronous motors are affected? – All changes at a glance
mandatory from
16.06.2011
© Siemens AG 2012Industry SectorMauricio Gómez
New Efficiency Standards in Europe and USA
New efficiencies in Europe & USA do have an major impact on the
motor world
comparison EFF vs. IE
IE1-IE3 efficiencies, 4-pole 50 Hz
© Siemens AG 2012Industry SectorMauricio Gómez
Eficiencia Energética en Chile
En Chile, la Superintendencia de Electricidad y Combustibles estableció, a través de la Resolución Exenta N° 204112, la obligatoriedad de adoptar a partir del 4 de enero de 2010 los Protocolos PE N° 7/01 y PE N° 7/01/02 en el área de Seguridad y en el área de Eficiencia de Motores Trifásicos de Inducción Jaula de Ardilla, respectivamente.
Alcance:
Motores de inducción (con rotor de jaula) trifásico que:
2, 4 y 6 polos
Frecuencia de 50 Hz
BT, marcados como 380/400/420/440/460/690 Volts
Potencia nominal entre 0,75 kW y 7,5 kW
Ciclo de servicio : S1(de acuerdo a la clasificación de la norma IEC 60034-1)
Tipo de envolvente : Abierta o cerrada (> IP 21) con autoventilación
© Siemens AG 2012Industry SectorMauricio Gómez
El protocolo PE N° 7/01/02 13 se basa en la norma de ensayo IEC 60034-2-1 y en la norma chilena de clasificación y etiquetado NCh 3086. El campo deaplicación del protocolo es restringido (0,75 kW hasta 7,5 kW) y se sustituyen
las tablas de clasificación de eficiencia de la norma NCh 3086 por las tablas de clasificación de la norma IEC 60034-30 para 50 Hz.
En síntesis, en Chile se sigue la tendencia de armonización en un estándar Internacional único basado en la norma 60034-2-1 para los ensayos y la normaIEC 60034-30 para la clasificación en categorías de eficiencia energética. Lasparticularidades nacionales se refieren principalmente al diseño de la etiqueta
que es similar al de las normas de clasificación y etiquetado de otros productos nacionales–y al campo de aplicación obligatoria, que es limitado.
Eficiencia Energética en Chile
© Siemens AG 2012.
Mauricio Gómez
•Ejemplos de aplicación (sinasave)
Temario
•Alcances
•Antecedentes y regulación
•Eficiencia en motores y portafolio
•Eficiencia variadores + motor
© Siemens AG 2012Industry SectorMauricio Gómez
Energy Saving in Drive Technology
Customer benefits?
An investment in energy-efficient drive technology has an extremely short payback time – depending on the particularapplication, already less than two years.
One thing is especially important when selecting the optimumdrive technology: The analysis of the lifecycle costs. For drive technology, the subsequent/follow-on costs areespecially high when compared to the initial purchase price.
© Siemens AG 2012Industry SectorMauricio Gómez
Energy Saving Cost Break-Down
The percentage of energy in the complete costsfor a motor in operation is greater than 95%.
12 15 20 Stat. motor lifetime
Source: Stat. motor lifetime DKI information brochure 09/99, Page 10
PurchaseInstallation&
Maintenance
Operation:
Energy
Costs for a motor
Rated power [kW]
© Siemens AG 2012Industry SectorMauricio Gómez
P1 = 3 x U x I x cos
P2 = M x n9,55
= P2P1
Losses are the difference between input and output power. Heat loss is dissipated via the enclosure
PFe
Pcu1
Rotor
Stator
Padd 1
Pcu2
PR
Padd2
(electrical energy)
(mechanical energy)
CONCEPTOS GENERALESEficiencia
© Siemens AG 2012Industry SectorMauricio Gómez
Motores IEC BT Siemens Alta Eficiencia
© Siemens AG 2012Industry SectorMauricio Gómez
Motores IEC BT Siemens Alta Eficiencia
© Siemens AG 2012Industry SectorMauricio Gómez
AC motors
Motores Baja Tensión Siemens
120 W - 1000 kWUp to 1000 V63M ... 450
IE1 / IE2 / IE3Aluminium/Cast iron
LowLow--voltage AC motorsvoltage AC motors
120W - 1000 kWAll of the usual voltages
63M ... 450Aluminium/Cast iron
ATEX motorsATEX motors
Customized motors Customized motors
The technical specifications fulfill your
requirements
Aluminium/Cast iron
NEMA motorsNEMA motors
NEMA 140 ... 4401 ... 400 HP
3-PhaseEPAct/NEMA PremiumAluminium/Cast iron
Smoke extraction motors0.37 kW to 200 kW
Ship’s motors 0.06 kW - 1000 kWRoller table motors 4 kW - 66 kWCrane motors 1,1kW - 481 kW
Aluminium/Cast iron
Motors for specific sectorsMotors for specific sectors
HighspeedHighspeedStandardStandard
NN--compactcompactIECIEC
200 - 1000 kW
400 - 690 V2 – 8 Pole
ANEMAANEMA
150 - 1340 HP
460 – 575 V2 – 8 pole
squirrel-cage rotor
caste frame withcooling ribsIP55/TEFC
ODP, WP I, WP II, TEAAC/TEWAC
(high-voltage motor frame with low-voltage winding)
250 - 1250 kW0-5000 min-1
400 - 690 V2 Polesquirrel-cage rotor
caste frame withcooling ribsIP23, IP55 IP55
750 W - 22 kW690 V
100M ... 160IE1 / IE2
Aluminium
1 LE1 IEC motors 1 LE1 IEC motors High Efficiency
© Siemens AG 2012Industry SectorMauricio Gómez
Series 1LA7,1LG4, 1LE2 y 1LG0, en stock disponibles con nuestrosdistribuidores (IEC y NEMA)
Motores Baja Tensión Siemens IEC Distribución
Product range FS 63 71 80 90 100 112 132 160 180 200 225 250 280 315 315 355 400 450High Efficiency IE2 - AluminiumHigh Efficiency IE2 - AluminiumStandard Efficiency IE1 - AluminiumStandard Efficiency IE1 - Aluminium
1LG6 IE2/ 3
Energysaving motors IE2/IE3 - Cast Iron --> new 1LE15/6Standard Efficiency IE1 - Cast IronEx e II - motors - AluminiumEx e II - motors - Cast IronEx de IIC- motors - Cast Iron
1LA7 1LA5
1LE1002
1LG6 1LA8 IE2/3
1LA6 1LG4
1LE15/6
High Efficiency IE2 - Cast Iron
1MJ6 1MJ7 1MJ1 /1MJ8
1MA7
1MA6 1MA6
1LA9
1LE1001
© Siemens AG 2012.
Mauricio Gómez
•Ejemplos de aplicación (sinasave)
Temario
•Alcances
•Antecedentes y regulación
•Eficiencia en motores y portafolio
•Eficiencia variadores + motor
© Siemens AG 2012Industry SectorMauricio Gómez
With converters and efficient motors costs are reduced and processes improved
Converters
Up to 70% energy cost saving for a payback time of< 2 years
M
~
~
Energy-saving motors from IE1 to IE3 with up to 10% higher efficiency than standard motors
LV trans-standard motors
HV-motors H-compact, H-compact plus
LV torque motors HT-direct
Special energy-saving motors
Motors
Low-voltage convertersMICROMASTER and SINAMICS
Medium-voltage convertersSINAMICS GM/SM, Perfect Harmony
© Siemens AG 2012Industry SectorMauricio Gómez
Energy saving Flow control using a throttle in a close system
Power fed in
Trans-former
Motor
Pump
Throttle
Useful (net) power
X
Losses in the:
M
100%
160%
281%
285%
265%
The drive process represents the main energy saving potential!Example:For a conventional fixed-speed drive with flow control using a throttle, 285 % of the power used is supplied in the form of electrical energy. The energy balance of a pump, operated at constant speed, becomes increasingly more unfavorable, the lower the quantity of medium to be pumped.
Throttle valve controlFixed speedI
t
It
Operation, direct online
Energy saving
© Siemens AG 2012Industry SectorMauricio Gómez
Energy savingFlow control using speed control in a close system
M
Power fed in
~~
Trans-former
Driveconverter
Pump
Motor
Useful (net) power
100%
158%
160%
152%
142%
Losses in the:
The drive process represents the main energy saving potential!Example:With electronic speed control, the power fed in is only 160% of the power required to pump the medium and the total losses are reduced to 1/3.
The process quality is also improved.
Operation from a drive converter
Variable-speed controlVariable speed
It
I
tIt
Energy saving
© Siemens AG 2012Industry SectorMauricio Gómez
Reduce costs and improve processes using frequency converters on Pumps, Fans, Compressors
For traditional, mechanical control concepts, the motor always operates with a fixed speed that has been designed for the maximum flow rate – although this is only infrequently required in practice. The consequence: High energy losses.
By changing the speed, the flowratecharacteristic is precisely located where the process optimally requires it. As a consequence, the motor only draws the power that is presently required at any particular operating point.
It especially makes sense to use frequency converters for applications with a square-law torque characteristic (e.g. pumps, fans, compressors): The frequency converters precisely and always adapt the motor speed to the currently required flow rate.
Flowcontrol with Frequency converters and flowmeters save up to 70 % energy and often have payback times of just a few months
© Siemens AG 2012Industry SectorMauricio Gómez
Summary: High Energy Saving in The Partial Load Range
© Siemens AG 2012.
Mauricio Gómez
•Eficiencia VDF + motor
Temario
•Alcances
•Antecedentes y regulación
•Eficiencia en motores y portafolio
•Ejemplo de aplicación (SINASAVE)
© Siemens AG 2012Industry SectorMauricio Gómez
Converter operation
Energy-saving
potential
Can be downloaded at no charge underwww.siemens.com/sinasave
Calculating energy-saving in drive technology using SinaSave
Breakevenpoint
© Siemens AG 2012Industry SectorMauricio Gómez
Ahorro Energético-Ejemplos
1er Caso: ¿Cuanto es el tiempo de amortización, en horas, de la adquisición de un motor eficiencia IE2 en comparación con un motor IE1? De acuerdo a los siguientes requerimientos:
Potencia 15 kW
Número de polos 4
Motor de Aluminio
Carga 100%
Horas de operación por año
Costo energía 0,155 USD/kWh
Datos a utilizar en SinaSave!!
© Siemens AG 2012Industry SectorMauricio Gómez
Ahorro Energético-Ejemplos
1,73
© Siemens AG 2012Industry SectorMauricio Gómez
Ahorro Energético-Ejemplos
1,73
© Siemens AG 2012.
Mauricio Gómez
Ahorro de energía en accionamientos eléctricos
M.Sc Mauricio GómezE-mail: mauricio.gomez@siemens.com
Energy Efficiency
Junio 2012
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