Thomas Heine – 06/09/2011€¦ · Thomas Heine – 06/09/2011 AIRAH - EC-fans and speed control...
Transcript of 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
EC-TechnologyWhat is an EC-motor?
• 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
EC-TechnologyWhat is an EC-motor?
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
EC-TechnologyEC motor – premium efficiency
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 [%]
EC-TechnologyEC motor – premium 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
EC-TechnologyEC motor – premium efficiency
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
EC-TechnologyWhat is an EC-motor?
•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
EC-TechnologyWhat is an EC-motor?
bridge rectifier•DC-link capacitor • driver unit for
power stage
Power Input P13050 W
AC EC
EC-TechnologyEC motor – premium efficiency
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
EC-TechnologyEC motor – premium efficiency
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
EC-TechnologyEC motor – premium efficiency
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
Re