thomas heine – 06/09/2011€¦ · thomas heine – 06/09/2011 airah - ec-fans and speed control...

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Thomas Heine – 06/09/2011

AIRAH - EC-fans and speed control

ebm-papst group overviewGlobal industry structure

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ebm-papst group overviewGreen Tech – a symbol that defines standards

ebm-papst group overviewebm-papst A&NZ – teams, individuals, families

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EC-TechnologyWhat is an EC-motor?

What is an EC- motor?It is abrushless, permanent magnet, synchronous motor with electronically commutation…

ELECTRONICALLY

…but we just name it

EC

LECTRONICALLYOMMUTATED motor or EC motor

Basic principle of EC technique hall IC


• permanent magnets produce magneticfield inside the rotor

• commutating occurs electronically andtherefore wear-free

• mains supply for EC-motor is DC or ACdepending on motor type

stator

Rotor

permanent magnet

winding

4

rotor

permanentmagnet


laminationstack

magnet

bearingsystem

windingcommutationelectronics

EC-TechnologyFeatures of an EC-motor

demand controller

frequency inverter

EMC filter motor supply filter

Motor protection

line filter

p

permanent magnet motor

5

80

90EC-SYSTEMS

EC-TechnologyEC motor – premium efficiency

mot

or ef

ficien

cy [%

]

40

50

60

70

80

1300 1/ iShaded Pole

1~Capacitor Motor

3~ AC Motor

shaft power [W]

10

20

30

0 50 100 150 200 250 300 350 400 450 500

approx. 1300 1/minMotor

2000

Control systems comparison - fan size: 800mm axial


800

1000

1200

1400

1600

1800

2000

Inpu

t Pow

er [W

atts

]

AC motor – with triac controllerAC motor – with transformerAC motor – with frequency inverterEC motor

AC 1900WEC 1550W

AC 800W

→ -18%

0

200

400

600

5000 7000 9000 11000 13000 15000 17000 19000

Air Performance [m³/h]

AC 800WEC 250W→ -68%

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• Comparison of induction motor> 1 5 kW MEPS 6 pole motor with VSD

Efficiency [%]


> 1.5 kW MEPS 6 pole motor with VSD=> 73% efficient

• EC motor with integrated VSD> 87% efficient

> 300 W saving

• High pole motors are more dramatic> 1.1 kW induction motor 8 pole

63% ffi i=> 63% efficient> 1.1 kW AC with VSD

=> 57% efficient> EC with integrated VSD

=> 84% efficient

87%

81%

87%

73%

84%

58%

%

100%On/Off operation

EC modulation


0%

25%

50%

75%

13% 25% 38% 50% 63% 75% 88% 100%

pow

er in

put

EC modulation

air flow 13% 25% 38% 50% 63% 75% 88% 100%

airflow capacity

Fan laws: P1 ~ n3

7

80

Fan Size A3G650

EC-TechnologyEC motor – lower noise level at reduced speed

40

50

60

70

LpA

[dB

A]

ECAC+trafoAC+FU with filterAC+PA without filterAC+PA with filter

Fan Size A3G650

10

20

30

0 2000 4000 6000 8000 10000 12000 14000air volume [m3/h]

AC PA with filter

0

EC-TechnologyEC motor – lower noise level at reduced speed

-21

-18

-15

-12

-9

-6

-3

nois

e di

ffere

nce

[dBA

]

On/Off operation

EC modulation

-2413% 25% 38% 50% 63% 75% 88% 100%

airflow capacity

EC modulation

delta Lp [dB] = 50 x log10 (n1/n2)Fan laws: delta Lp [dB] = 50 x log10 (n1/n2)

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EC-TechnologyEC motor – the only motor that follows fan laws

95.0Efficiency [%]

EC

EC-TechnologyFuture proof technology

75.0

80.0

85.0

90.0

2p EC4p EC6p EC2p MEPS4p MEPS6p MEPS8p MEPS2p HEPS4p HEPS

EC

HEPS

MEPS

65.0

70.0

0.1 1 10 100

4p HEPS6p HEPS8p HEPS

Shaft power [kW]

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EC-TechnologyThe right solution for HVAC-R applications

EC-TechnologyThe right solution for HVAC-R applications

Different applications have different signals:

Temperature sensorsHead pressure sensorsPressure sensorsSPCs..

nearly everything is possible!

0-10V

4-20mA

nearly everything is possible!

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400 V / 50 HzHead pressure sensor

sensor supply

EC-TechnologySimple speed control compared to VSD

inverter

EMC filtercontroller

motor filterAC fan

line filter

motor protection

380-480 V50/60 Hz

sensor supplyHead pressure sensor

EC-TechnologySimple speed control compared to VSD

inverter

EMC filtercontroller

motor filterebm-papst EC fan

line filter

motor protection

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EC-TechnologySpeed control with Modbus RTU

Application: RefrigerationWhat type of speed control do you need?

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Application: RefrigerationWhat type of speed control do you need?

iQ2 W1G-range• Drop-in

replacement for Q-motors

• New generation with 2 speeds

• 2 programmable speeds

S3G300 / 350• 2 speed or 0-10V control input

Do you have any questions?

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EC-TechnologySpeed control options

0..10V DC analogue control input (dial up air flow)

External

Controller

RS485, twisted pair

4..20mAclose loopsensorcontrol

LAN/Ethernet

control

Interface converter

Power input• EMC protection• bridge rectifier•DC-link capacitor

Inverter module for motor• power stage• driver unit for

Mains voltage


•DC-link capacitor power stage

Control unit and low voltage• phase failure detection• DC-link capacitor temperature control• DC-link over voltage protection• PCB temperature control

motor

Analogue inputPWM / 0-10V

Microcontroller• controlling• monitoring• communicating• access EEPROM • speed control

Interface• analogue Input / PWM• Output 0-10V• RS485

Position of hall sensor

PWM / 0 10V

Master out 0-10V

RS485 ebmBUS

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Power input• EMC protection• bridge rectifier

Inverter module for motor• power stage

Mains voltagemotor


bridge rectifier•DC-link capacitor • driver unit for

power stage

Power Input P13050 W

AC EC


air gap

Heat loss ACLamination loss 200W 80W

Copper loss 200W 120WAdditional losses

Slip loss 60W 0W

ECOutput

Power Output P2

Slip loss 60W 0WFrictional loss

+ Inverter loss ~160W 80W

System loss ~620W 280W

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Impeller diameter: 650mmDelta

2000


1000

1500

2000

inpu

t [W

]

AC+FU with filterAC+PA without filterAC+PA with filterAC+TrafoEC

1050W@ 8.000m³/h

0

500

0 2000 4000 6000 8000 10000 12000 14000air volume [m³/h]

480W@ 8.000m³/h

Voltage control is set to 100%

100


Voltage controller

Frequency inverter

EC-Controller

40

60

80

elativ

e pow

er co

nsum

ptio

n %

Fan speed %13 25 38 50 63 75 88 100

0

20

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thomas heine – 06/09/2011€¦ · thomas heine – 06/09/2011 airah - ec-fans and speed control...

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