© 2011 Power Electronics. Todos los derechos reservados. ® ENERGY EFFICIENCY IN ELECTRIC MOTORS HIGH ENERGY EFFICIENCY SYSTEMS IN ELECTRIC MOTORS 25 November.

© 2011 Power Electronics. Todos los derechos reservados.

®

ENERGY EFFICIENCY IN ELECTRIC MOTORSHIGH ENERGY EFFICIENCY SYSTEMS

IN ELECTRIC MOTORS25 November of 2011


®

1 Introduction

2 Savind and EE in Motorsa) EU MEPS Schemesb) Efficient motors

3 Variable Speed Drives

4 Power Electronics WorldWide

Index


®

01. Introduction Global energy distribution

Source: International Energy Agency


®




®



Source: Comisión Nacional de la Energía (CNE)


® 01. Introduction Industrial Sector – Consumption and Applications.

32%

23%

8%

14%

15%8%

Pumps

Fans

Air compressors

Other compressors

Transporters

Others

Pumps

Fans

Conveyor belts

Compressors

Mills

Dryers

Propulsion

Winders

Lamination

Perforation

Others….


®

01. Introduction Tertiary Sector – Consumption and Applications.

ACS pumps

Heating pumps

Cooling towers fans

Air treatment unit

Heat pumps compressor

Elevators

Escalators

Hoods

Compressors

Others….


®

1 Introduction

2 Saving and EE in Motorsa) EU MEPS schemesb) Efficient motors



Index


®

02. Saving and energy efficiency in motors EU MEPS (European Minimum Energy Performance Standard)

2010 2011 2012 2013 2014 2015 2016 2017 2018

The European Commission decides to apply the requirements ECO DESIGN to 3 PHASE MOTORS of 2-, 4- and 6-poles, from 0.75 to 375 kW

PHASE 1: All the MOTORS sold must present an efficiency level IE2

PHASE 2: MOTORS 7.5kW - 375kW sold must present an efficiency level IE3 or IE2 with VARIABLE SPEED DRIVE

PHASE 3: MOTORS 0.75kW - 375kW sold must present an efficiency level IE3 or IE2 with VARIABLE SPEED DRIVE


®

1 Introduction

2 Saving and EE in Motors3 EU MEPS schemesa) Efficient Motors



Index

10


®

02. Saving and energy efficiency in motors Efficient Motors

Fuente: ABB

▲ 2 % Performance


®

1 Introduction

2 Saving and EE in Motorsa) EU MEPS Schemeb) Efficient Motors



Index


®

03 Variable Speed Drives. Pumps and fans


®

Donde: Q = Flow

n = Motor Speed

P = Power

h = Height

PUMPS AND FANS ACCORDING TO SIMILARITY LAWS

Q n

h n2

P n3

03 Variable Speed Drives. Pumps and fans - Similarity laws

3

10080 100

80

n

nPP nn


®

Stat

ic h

eigh

t 20

met

ers

03 Variable Speed Drives. Pumps and fans – Valve control vs VSD

0

Height in m H2O n = 1480 RPM

H-Qcurves

System curves

10 20 30 Q Flow m3/min

CAUDAL70

60

50

40

30

20

10

80

1 X n

0.9 X n

0.8 X n

0.7 X n

0.6 X n

0.5 X n

0.4 X n

100%50%0

Height in m H2O

70

60

50

40

30

20

10

80

1 X n

0.9 X n

0.8 X n

0.7 X n

0.6 X n

0.5 X n

0.4 X n

10 20 30100%50%

100%90%80%70%60%50%

H-Q Curves

kWP 10050 kWPP 25150

403

5040 .

3

35 50

3534.3

50P P kW


®

Flow(%)

Valve control demand ( kW)

Demand with SD700 VFD

(kW)

Demand saving(kW)

Energy saving

(%)

Cost saving

(€/1000 h)

100% 100 100 - - -

90% 95 72,9 22,1 23 % € 3.315

80% 83 51,2 31,8 38 % € 4.770

70% 77 34,3 42,7 55 % € 6.405

60% 73 21,6 51,4 70 % € 7.710

50% 68 12,5 55,5 81 % € 8.325

Pump Power : 110 kW Electric cost: 150 €/MWh

03 Variable Speed Drives. Pumps and fans – Energy saving


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03 Variable Speed Drives. Conveyor belts, compressor, mills, others


®

Where: T = Torque

n = Motor speed

P = Power

T cnst.

P n

03 Variable Speed Drives. Conveyor belts, compressor, mills, others

P ( kW)

N ( rpm)1.000 2.000

50

100

Speed(%)

Demand with SD700 VFD

(kW)

Energy saving

(%)

Costsaving

(€/1000 h)

100% 100 - -

90% 90 10 % € 1.500

80% 80 20 % € 3.000

70% 70 30 % € 4.500

60% 60 40 % € 6.000

50% 50 50 % € 7.500

Pump power : 110 kW Electric cost: 150 €/MWh


®

03 Variable Speed Drives. Benefits

QUALITY AND PERFORMANCE IMPROVEMENT: Introducing a torque and a speed motor control, the damages in the process disappear and the process performance increase.

ENERGY SAVINGS: up to 60% in comparison with traditional DOL control systems

REDUCE MAINTENANCE AND INCREASE MOTOR LIFE TIME : The high number of starts and the overcurrent suffered by induction motors reduce its working life and increases their maintenance costs.

DECREASE THE ENVIRONMENTAL IMPACT AND IMPROVE THE CORPORATIVE IMAGE: The electric and fossil fuels energy savings reduces the company greenhouse gases emission.


®

1 Introduction

2 Saving and EE in Motors3 EU MEPS Schemesa) Efficient Motors



Index


®04 Power Electronics Worldwide

CHILESantiago

GERMANYNürnberg

AUSTRALIABrisbane

BRASILSao Paulo

SPAINBarcelonaLleidaLas PalmasLa CoruñaValenciaCastellónMurciaVizcayaMadridSevilla

CHILEAntofagasta

CHINABeijing

CHINAHong Kong

KOREASeúl

INDIAMadurai

MEXICOTlalnepantla

NEW ZELANDChristchurch

ITALYMilano

SERVICE365 days

CUSTOMERSsupport

Immediatedelivery

© 2011 Power Electronics. Todos los derechos reservados. ® ENERGY EFFICIENCY IN ELECTRIC MOTORS HIGH ENERGY EFFICIENCY SYSTEMS IN ELECTRIC MOTORS 25 November.

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