ACS large drive family

1. ACS large drive family

ACS6000c
AC/AC
•direct AC to AC converter(cyclo), no DClink
•SCR Thyristor
•synchronous motor(AC motor with DC
excitation)
•high power and low speed, example
roughing mills and ship main propulsion
AC/AC
SM
AC/AC
ACS6000sd
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•AC/DC/AC drive with DC-link
•IGCT semiconductor which is gate
commutated
•synchronous motor(AC motor with DC
excitation)
•best possible performance with DTC
•cold rolling mills and mine hoists
ACS6000ad / ACS1000
•AC/DC/AC drive with DC-link
•IGCT semiconductor
•induction motor(no excitation)
•6000ad for marine application
•1000 for pumps and fans
AC/DC
DC/AC
SM
AC/DC
DC/AC
IM

2. ACS6000c cycloconverter drive

Main components of cycloconverter drive:
• Main circuit breaker
• Transformers to connect the drive to high
voltage network 6..36kV.
• Cycloconverter
• High speed circuit breakers
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• 3 or 2*3 phase Synchronous motor(ACmotor) with DC-excitation

3. ACS6000c transformers

• 2, 3 or 4 winding
transformers
• Primary voltage from 6 to
36kV
• In metals air cooled
• In marine water cooled
•Auxiliaries
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• Dehydrating Breathers
• Fans/pumps
• Gas Relays
• Oil Level Indicators
• Pressure Relief Devices and
Over-pressure Swithes
• Tap Changers
• Thermometers & PT 100

4. ACS6000c system description

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Basic 3-phase cycloconverter
three phase units
one water or air cooling unit
two control units
one excitation unit

5. ACS6000c system description

2 ) 6-pulse, 3-phase motor, separated
phase windings
1 ) 6-pulse, 3-phase motor
6p 6p
6p 6p
6p 6p
SM
6p 6p
6p 6p
6p 6p
3 ) 6-pulse, 2*3-phase motor, separated
stators
4 ) 12-pulse, 3-phase motor
6p 6p
6p 6p
6p 6p
6p 6p
6p 6p
6p 6p
SM
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SM
6p 6p
6p 6p
6p 6p
6p 6p
6p 6p
6p 6p
SM

6. ACS6000c cycloconverter drive

Phase
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current
Excitation current
(DC current)
Positive bridge
Negative bridge

7. ACS6000c Phase unit main parts

3 phase supply(1000..1200VAC)
3 overvoltage suppressors
PAI
12 (24 if parallel) fuses
GDR
12 thyristor’s
12 RC circuits
12 pulse transformers
2 Gate DRiver boards
1 Pulse Amplifier Interface board
1 Thyristor STAtus measurement
board
1 voltage tranducer
1 shunt and current tranducer
To CCB
STA
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U
Neutral point of
cycloconveter
I
HSCB/motor

8. ACS6000c thyristor

Thyristor
thyristor
module
type
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W1-49-10
W2-73-10
W2-84-10
W3-96-10
A2-49-10
A2-73-10
A3-73-10
A3-84-10
A3-96-10
max.
overload 60 s [A]
continuous (preload 1/2 * I60s )
current [A]
1600
2850
4150
5200
1420
2300
2700
3750
4500
Micro switch
Fuse
overload
preload
1850
3400
5250
6700
1760
3050
3200
4500
5600
925
1700
2625
3350
880
1525
1600
2250
2800
Thyristor type
5STP1242F0000
5STP1842F0001
5STP2842F0017
5STP3842F0007
5STP1242F0000
5STP1242F0000
5STP1842F0001
5STP2842F0017
5STP3842F0007

9. ACS6000c Excitation unit main parts

3 phase supply(400..690VAC)
1 contactor
PAI
3 overvoltage suppressors
GDR
6 fuses
6 thyristor’s
6 RC circuits
6 pulse transformers
1 Gate DRiver boards
1 Pulse Amplifier Interface board
1 Thyristor STAtus measurement
board
1 shunt and current tranducer
1 voltage tranducer
To CCB
STA
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U
I
To slip rings

10. ACS6000c brushless excitation

• Both brushless excitation and
excitation with sliprings and
brushes are available
• When performance requirements
are high excitation with sliprings
and brushes will be used
• Brushless excitation is the
alternative e.g. in fan, compressor
and pump drives
• Explosive environments require
brushless excitation
Stator
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Rotor
Diodes

11. ACS6000c brushless excitation

Converter
Exciter machine
Synchronous machine
1
ieu_s
i_f
4
3
uf_uv
iev_s
BOD
6
3r
uf_vw
Excitation current
(DC current)
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6r
5
2
5r
2r
Measured
Calculated

12. ACS6000c brushless excitation

Thyristors
Pulse transformers
Supply fuses
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Supply cables

13. ACS6000c Water cooling unit

bar
PT
mA
Drainage valve
V19
PE
PI [bar & psi]
V15
Water cooling benefits:
V18
TE
to thyristor
bridges
V5
F
1-0
FT
FI
V17
[l / min]
Filling
valve
BV2
V2
V4
V16
CI
mA
CE
CP2
no
dust filtering problems or
maintenance needs
ET
FD
V8
V7
V6
practically
PH
DT
from thyristor
bridges
smaller
V9
FI
TE
WATER COOLING UNIT
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air-conditioning
V3
ADV
= Automatic deaeration valve
= Back valve
= Conductivity sensor
= Conductivity indication
= Centrifugal pump
= Conductivity transmitter
= Deaeration tank
= Expansion tank
= Deionization filter
= Flow indication
= Mechanichal filter
= Flow transmitter
= Pressure sensor
= Plate heat exchanger
= Pressure indication
= Pressure transmitter
= Temperature sensor
= Valve (black=normally closed)
minimum
needed
CT
ADV
BV
CE
CI
CP
CT
DT
ET
FD
FI
FM
FT
PE
PH
PI
PT
TE
V
thyristor
loadability
V14
CP1
V1
[ S / cm]
increased
V13
FM
Deaeration
valve
BV1
F
[l / min]
1-0
FT
[l / min]
F
1-0
FI
V11
FT
TE
V12
V10
Raw water pipe
no
noiseless
cubicles
fans needed - better
efficiency

14. ACS6000c Water cooling unit

Expansion vessel
Two pumps
Ion-compound
ion-compound water flow
meter
Pressure sensors
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External water cooling
connection

15. ACS6000c air cooling

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ACS6000c air cooling
Common air channel through max. three phase cabinets
Redundant blower option

16. ACS6000c high speed circuit breakers(HSCB)

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ACS6000c high speed circuit breakers(HSCB)
Made by Secheron,
Geneva, Switzerland
Nominal voltages up to
4000V
Maximum rated currents
up to 6000A
More selective protection
in case of short circuit in
motor or commutation
failure during
regenerating(loss of supply
voltage)
Voltage level of the fuses
lower. 1.25kV instead of
2.0kV without HSCB

17. ACS6000c HSCB operation

ARC CHUTE
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MOVING CONTACT
COIL
Fork
TRIPPING DEVICE

18. ACS6000c HSCB wearing

ARC CHUTE
Fixed contact
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Pole
Moving
contact

19. ACS6000c HSCB setting

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ACS6000c HSCB setting
Trip limit=
1.41 × maximum motor current ×1.3
1.41 × 2100A × 1.3=3850A
Phase current

20. ACS6000c HSCB installation

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METALS
MARINE

21. ACS6000c, Synchronous motor compared to DC

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Smaller mechanical size
No commutation problems
Lower losses
Full overload up to max speed
Less maintenance
Moment of inertia can be kept low: long
rotor, small diameter
AC-Synchronous motor is thermally less
critical
Stator monitored with Pt-100
elements
Rotor construction is not thermally
critical
Gearless solutions: noise - losses

22. ACS6000c, SM rotor design

Salient pole motor with high
overloadability and easy cooling of
rotor
means smaller inertia and lower weight
means lower losses in the rotor
means higher margins to the pole angle
limit (90 degrees)
direct cooling of the excitation windings
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Salient pole rotor with removable
poles
means only a pole as a spare part, not
the whole rotor
means that the rotor can be repaired at
site

23. ACS6000c control

AMC3 with DDCS -Optic Links
Fieldbus Adapter
to other systems
or link to the
Advant Controller
RS485
Application and Motor
Controller, AMC3
Control panel
PC Link
CONVERTER
CONTROL
BOARDS
(CCB)
S800 I/O Station
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Temperature measurement
Gray encoder interface
Pulse encoder interface
Position feedback
Speed feedback
PT100
PAI
Converter PAI
PAI
Unit 1
Converter
Excitation
Unit
N
Unit

24. ACS6000c control

PROCESS AND USER I/O
COMMON ELECTRONICS
S800 I/O STATION
TO ADVANT
CONTROLLER
TB820
FIELDBUS
ADAPTER
TACHOM.
BOARD
NTAC-02
PROCESS I/O
GRAY ENC. BASIC I/O
BOARD
UNITS
(GRB)
(BIO1...3)
CDP
312
DRIVE CONTROL
D
D
C
S
D
D
C
S
R
S4
85
D
D
C
S
CONVERTER UNIT 1
LOCAL
I/O
D
D
C
S
CONVERTER
CONTROL
BOARD (CCB)
MUB MUB
CONVERTER UNIT 3
STA
STA
STA
APPLICATION AND MOTOR
CONTROL BOARD (AMC3)
MUB MUB
CONVERTER UNIT 2
CONVERTER
CONTROL
BOARD (CCB)
POWER
SUPPLY
PULSE AMPL. GDR
INTERFACE
GDR
(PAI)
LOCAL
I/O
POWER
SUPPLY
PULSE AMPL. GDR
INTERFACE
GDR
(PAI)
LOCAL
I/O
POWER
SUPPLY
PULSE AMPL. GDR
INTERFACE
GDR
(PAI)
EXCITATION UNIT
STA
LOCAL
I/O
POWER
SUPPLY
PULSE AMPL. GDR
INTERFACE
(PAI)
DDCS
DDCS
DDCS
DDCS
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MEAS.UNIT
INTERF.(MUI)
MTR
MEAS.UNIT
INTERF.(MUI)
1...8
1...8
1...8
1...8
MTR
MTR
MTR

25. ACS6000c speed and current control loops

AMC3
Speed controller and
current reference
calculation
CCB
Phase unit
Current
controller
Synchronization
and firing logic
Speed
reference
Current
measurement
Motor
SM
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Rotor position
measurement
SE
Speed
measurement
PG

26. ACS6000c control in MARINE application

AC110
AMC3
CCB
Phase unit
Current
controller
Power limitation
Torque reference
Auxiliary control
Synchronization
and firing logic
Current
reference
calculation
Current
measurement
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Motor
Rotor position
measurement
SM
SE

27. ACS6000c control

Rotor position
Torque reference
from AC110
Current
references
for each
AMC
phase
marine
AMC
Metals
CCB
Actual
currents/
voltages
for vector
control
Motor speed
Rotor position
Speed reference from
automation system
AMC
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CCB
MUB
MUI
STA
PAI
GDR
MTR
ISOAMP
MUB
Actual
currents/
voltages
and synch
voltages
MUB
To voltage
transformers 100V
To transformer
secondary(1000V)
Control unit
Phase unit
MUI
STA-BOARD
PAI
GDR
Firing
pulses to
each
phase
Speed and vector control
(MARINE:Only vector control)
Current control, synchronization
AD conversion of measured signals
Connection of measurements
Thyristor status measurement
Pulse transmission to gate driver, local IO
Gate drives
Voltage measuring transducer
Current transducer
Fiber optic
Flat cable
Hardwired
Synchronization trafo
PULSE
TRAFO
GDR
PULSE
TRAFO
PULSE
TRAFO
Actual
voltage
Actual
current
MTR
ISOAMP
PULSE
TRAFO
PULSE
TRAFO
PULSE
TRAFO