Posted
on July 17, 2009, 11:27 pm,
by Paweł Szymula,
under
ABB.
ABB has recently introduced a new medium voltage drive – ACS 2000. It is IGBT based five-level diode-clamped* voltage source inverter. Main product features according to the manufacturer documentation are:
- AFE 5-level IGBT rectifier with transformerless design** (direct-to-line connection is possible), two-winding input transformer is an alternative,
- full load/speed input power factor correction and regenarative braking ability,
- possible retrofit of existing MV motors** – acceptable output dv/dt and common mode voltage,
- 6000-6900V input voltage rating, 0-6900V output voltage rating,
- nine-level output voltage waveform,
- common DC-link,
- MV IGBT design,
- power range – 315-800kW (430-1090HP).
More detailed ACS 2000 information can be found in ABB MV drives section.
As always – I appreciate your comments and clarifications.
* – my conclusion on the probable topology (confirmation necessary) – 5-level diode-clamped inverter means that it consists of 24 IGBTs, 36 clamping diodes (assuming the same voltage rating for diode/IGBT) and 4 DC-link capacitors
** – transformerless design and possible retrofit of existing MV motors might mean use of CMVE (common-mode voltage elimination) circuit in a drive DC link section that could comprise special design common-mode choke, auxiliary choke (if necessary), resistor and active switches (if necessary)
Rockwell Automation manufactures three medium voltage drive types – all of them are CSI topology. The main differences between types are: power range, input section configuration, cabinets design – footprint, cooling and control voltage.
| PowerFlex 7000A ‘A’ Frame |
| Topology |
Current Source Inverter |
| Input section |
PWM SGCT based rectifier with input capacitors, 6-pulse SCR rectifier, 6 SCRs/SGCTs for 2400V (2 per phase); 12 SCRs/SGCTs for 3300V and 4160V (4 per phase); 18 SCRs/SGCTs for 6600V (6 per phase); integral input contactor + line reactor (RPDTD, RPLR, R6LR), integral or remote isolation transformer (RPTX, RPTXI, R6TX, R6TXI), inherent regenerative braking capability |
| Input voltage |
2400V, 3300V, 4160V, 6600V |
| Efficiency |
>98% 6-pulse rectifier at rated load, >97.5% PWM rectifier at rated load |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements – installation of passive LC input filters is necessary – current THD<6% with filters, PWM meets IEEE 519 – current THD<5%, PF>0.98 for 30-100% load |
| DC link section |
DC link reactor or DC link Common Mode Choke in Direct-to-Drive technology |
| Output section |
PWM SGCT based inverter with output capacitors, 6 SGCTs for 2400V (2 per phase); 12 SGCTs for 3300V and 4160V (4 per phase); 18 SGCTs for 6600V (6 per phase); |
| Output power |
0.15-0.9MW (200-1200HP) |
| Output voltage |
0-2300V, 0-3300V, 0-4160V, 0-6600V |
| Output freuency |
0.2-75Hz |
| Field weakening |
no data |
| Switching frequency |
SGCTs<540Hz |
| Output waveform |
sinusoidal, output capacitors are used |
| Motor type |
induction or synchronous |
| Overload |
110% rated current for 1 min. every 10 minutes or 150% rated current for 1 min. every 10 minutes for Heavy Duty drives (applications with constant torque) |
| Cooling |
forced air |
| Control scheme |
IFOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.1% without encoder, 0.01-0.02% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
SHE (preffered) or SVM in rectifier, TPWM at low speed (0,5-37Hz) and SHE at high speed (>37Hz) in inverter |
| Special features |
Small footprint, integral input starter or integral input transformer |
| PowerFlex 7000 ‘B’ Frame |
| Topology |
Current Source Inverter |
| Input section |
PWM SGCT based rectifier with input capacitors, 6-pulse SCR rectifier, component count: 6 SCRs/SGCTs for 2400V (2 per phase); 12 SCRs/SGCTs for 3300V and 4160V (4 per phase); 18 SCRs/SGCTs for 6600V (6 per phase);
18-pulse SCR rectifier, component count: 6 SCRs for 2400V, 3300V, 4160V and 6600V;
line reactor (RPDTD, RPLR, R6LR), isolation transformer (RPTX, R6TX, R18TX), inherent regenerative braking capability |
| Input voltage |
2400V, 3300V, 4160V, 6600V |
| Efficiency |
>98% 6-pulse and 18-pulse rectifier at rated load, >97.5% PWM rectifier at rated load |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements – installation of passive LC input filters is necessary – current THD<6% with filters, 18-pulse meets IEEE 519 – current THD <5.6%, PWM meets IEEE 519 – current THD<5%, PF>0.98 for 30-100% load |
| DC link section |
DC link reactor or DC link Common Mode Choke in Direct-to-Drive technology |
| Output section |
PWM SGCT based inverter with output capacitors, 6 SGCTs for 2400V (2 per phase); 12 SGCTs for 3300V and 4160V (4 per phase); 18 SGCTs for 6600V (6 per phase); |
| Output power |
0.15-4.1MW (200-5500HP) |
| Output voltage |
0-2300V, 0-3300V, 0-4160V, 0-6600V |
| Output freuency |
0.2-85Hz |
| Field weakening |
no data |
| Switching frequency |
SGCTs<540Hz |
| Output waveform |
sinusoidal, output capacitors are used |
| Motor type |
induction or synchronous |
| Overload |
110% rated current for 1 min. every 10 minutes or 150% rated current for 1 min. every 10 minutes for Heavy Duty drives (applications with constant torque) |
| Cooling |
forced air |
| Control scheme |
IFOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.1% without encoder, 0.01-0.02% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
SHE (preffered) or SVM in rectifier, TPWM at low speed (0,5-37Hz) and SHE at high speed (>37Hz) in inverter |
| Special features |
- |
| PowerFlex 7000L ‘C’ Frame |
| Topology |
Current Source Inverter |
| Input section |
PWM SGCT based rectifier with input capacitors, component count: 12 SGCTs for 4160V (4 per phase); 18 SGCTs for 6600V (6 per phase);
18-pulse SCR rectifier, component count: 6 SCRs for 4160V and 6600V;
line reactor (RPDTD, RPLR), isolation transformer (R18TX), inherent regenerative braking capability |
| Input voltage |
4160V, 6600V |
| Efficiency |
>98% 18-pulse rectifier at rated load, >97.5% PWM rectifier at rated load |
| Input power quality |
18-pulse meets IEEE 519 – current THD <5.6%, PWM meets IEEE 519 – current THD<5%, PF>0.98 for 30-100% load |
| DC link section |
DC link reactor or DC link Common Mode Choke in Direct-to-Drive technology |
| Output section |
PWM SGCT based inverter with output capacitors, 12 SGCTs for 4160V (4 per phase); 18 SGCTs for 6600V (6 per phase); |
| Output power |
2.2-6.3MW (3000-8500HP) |
| Output voltage |
0-4160V, 0-6600V |
| Output freuency |
0.2-85Hz |
| Field weakening |
no data |
| Switching frequency |
SGCTs<540Hz |
| Output waveform |
sinusoidal, output capacitors are used |
| Motor type |
induction or synchronous |
| Overload |
110% rated current for 1 min. every 10 minutes or 150% rated current for 1 min. every 10 minutes for Heavy Duty drives (applications with constant torque) |
| Cooling |
liquid |
| Control scheme |
IFOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.1% without encoder, 0.01-0.02% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
SHE (preffered) or SVM in rectifier, TPWM at low speed (0,5-37Hz) and SHE at high speed (>37Hz) in inverter |
| Special features |
- |
Please let me know or write your comments if something should be corrected or clarified.
Tags:
component count,
control schemes,
cooling,
efficiency,
market,
modulation techniques,
parameters,
producers,
speed control,
switching frequency,
topology,
torque control No Comments »
Below you will find technical data of medium voltage drives manufactured by ABB.
| ACS 1000 |
| Topology |
Voltage Source Inverter – Three-level Neutral Point Clamped |
| Input section |
Diode rectifier – 12 or 24 pulses – no regenerative braking ability |
| Input voltage |
2300V, 3300V, 4160V |
| Efficiency |
>98% at rated load excluding isolation transformer |
| Input power quality |
24 pulses meets IEEE 519 requirement, 12 pulses – passive LC harmonic filter should be used to meet IEEE 519, PF>0.95, DPF>0.97 |
| DC link section |
2 DC link capacitors, 2 di/dt clamp circuits composed of resistor, inductor, capacitor and diode, 2 IGCT switches for fuseless short-circuit protection, optional common mode choke circuit consisting resistor and inductor – to increase isolation transformer – converter cables lenght from 20-30m to 150-200m |
| Output section |
PWM, 3-level NPC IGCT based inverter, 4 IGCTs per phase with integrated freewheeling diode, 2 clamping diodes |
| Output power |
0.3-5MW (400-6700HP) |
| Output voltage |
0-2300V, 0-3300V, 0-4160V |
| Output freuency |
0-66Hz |
| Field weakening |
45-66Hz |
| Switching frequency |
IGCTs – 500Hz, output waveform switching frequency – 1000Hz due to asynchronous IGCT switching |
| Output waveform |
five level line-to-line voltage, LC output filter is used to limit dv/dt |
| Motor type |
induction |
| Overload |
110% rated current for 1 min. every 10 minutes |
| Cooling |
forced air or liquid |
| Control scheme |
DTC |
| Dynamic speed error |
<0.4% without encoder, <0.1% with encoder |
| Steady-state speed error |
<0.5% without encoder, <0.01% with encoder |
| Torque response time |
10ms |
| Torque accuracy |
2% in speed range of 2-100% and load range of 10-100% |
| Modulation technique |
hysteresis modulation |
| Special features |
no data |
| ACS 2000 |
| Topology |
Voltage Source Inverter – Five-level Diode-Clamped |
| Input section |
Active Front-End – 5-level IGBT based rectifier, 4-quadrant operation, PF correction, Direct-to-Line connection possible or two-winding isolation transformer |
| Input voltage |
6000-6900V |
| Efficiency |
97.5% converter efficiency at rated load |
| Input power quality |
AFE meets IEEE 519 harmonics requirement, adjustable PF in whole speed range |
| DC link sections |
common DC link comprised of 4 capacitors |
| Output section |
PWM, 5-level diode-clamped IGBT based inverter |
| Output power |
315-800kW (430-1090HP) |
| Output voltage |
0-6000V, 0-6600V, 0-6900V |
| Output freuency |
0-75Hz |
| Field weakening |
>15Hz |
| Switching frequency |
IGBT – 540Hz |
| Output waveform |
nine level line-to-line voltage waveform |
| Motor type |
induction |
| Overload |
110% rated current for 1 min. every 10 minutes |
| Cooling |
forced air |
| Control scheme |
DTC |
| Dynamic speed error |
<0.4% without encoder, <0.1% with encoder |
| Steady-state speed error |
<0.5% without encoder, <0.01% with encoder |
| Torque response time |
10ms |
| Torque accuracy |
2% in speed range of 2-100% and load range of 10-100% |
| Modulation technique |
hysteresis modulation |
| Special features |
Doesn’t require input isolation transformer, retrofit of existing MV motor is possible, regenarative braking ability, small footprint |
Some parameters may be not accurate. I need more information on ACS 2000 topology since I’ve used only official ABB website and ACS 2000 Brochure as a reference.
| ACS 5000 |
| Topology |
Voltage Source Inverter – Five-level NPC/H-Bridge |
| Input section |
Diode rectifier – 36 pulses – no regenerative braking ability |
| Input voltage |
6000-6900V |
| Efficiency |
>98.5% at rated load |
| Input power quality |
36 pulses meets IEEE 519 requirement, PF>0.96 (>0.95 total) |
| DC link section |
3 isolated DC supplies – each comprised of 2 capacitors |
| Output section |
PWM, 5-level NPC/H-Bridge IGCT based inverter, 8 IGCTs per phase with integrated freewheeling diode, 4 clamping diodes per phase |
| Output power |
1.46-6MW (1960-8050HP) air cooled, 4.5-21MW (6000-28000HP) liquid cooled |
| Output voltage |
0-6000V, 0-6600V, 0-6900V, optional 0-4160V |
| Output freuency |
0-75Hz, optional 0-250Hz |
| Field weakening |
>35Hz, higher optional |
| Switching frequency |
IGCTs – 500Hz, - inverter output frequency = four time device switching frequency >2000Hz |
| Output waveform |
nine level line-to-line voltage waveform |
| Motor type |
induction, synchronous, permanent magnet synchronous |
| Overload |
110% rated current for 1 min. every 10 minutes |
| Cooling |
forced air or liquid |
| Control scheme |
DTC |
| Dynamic speed error |
<0.4% without encoder, <0.1% with encoder |
| Steady-state speed error |
<0.5% without encoder, <0.01% with encoder |
| Torque response time |
10ms |
| Torque accuracy |
2% in speed range of 2-100% and load range of 10-100% |
| Modulation technique |
hysteresis modulation |
| Special features |
no data |
Some parameters may be not accurate. I need more information on ACS 5000 topology since I’ve used only official ABB website and ACS 5000 Brochure as a reference.
| ACS 6000 |
| Topology |
Voltage Source Inverter – Three-level Neutral Point Clamped |
| Input section |
Diode rectifier – 12 pulses (LSU) – no regenerative braking ability or 6 pulse IGCT active rectifier unit (ARU) |
| Input voltage |
2x1725V for 12p rectifier, 3160V for active rectifier unit, |
| Efficiency |
>98.5% for LSU at rated load, >97.7% for ARU at rated load |
| Input power quality |
12 pulses – passive LC harmonic filter should be used to meet IEEE 519, ARU meets IEEE 519 requirement, PF=0.96 for LSU and PF=1 (adjustable) for ARU |
| DC link section |
2 DC link capacitors, 2 di/dt clamp circuits composed of resistor, inductor, capacitor and diode, 2 IGCT switches for fuseless short-circuit protection |
| Output section |
PWM, 3-level NPC IGCT based inverter, 4 IGCTs per phase with integrated freewheeling diode, 2 clamping diodes |
| Output power |
4.3-25.8MW (5800-34600HP) |
| Output voltage |
0-3000V, 0-3300V, optional 0-2300V |
| Output freuency |
0-75Hz, optional 0-250Hz |
| Field weakening |
no data |
| Switching frequency |
IGCTs – 500Hz, output waveform switching frequency – 1000Hz due to asynchronous IGCT switching |
| Output waveform |
five level line-to-line voltage, LC output filter is used to limit dv/dt |
| Motor type |
induction, synchronous, permanent magnet synchronous |
| Overload |
110% rated current for 1 min. every 10 minutes |
| Cooling |
liquid |
| Control scheme |
DTC |
| Dynamic speed error |
<0.4% without encoder, <0.1% with encoder |
| Steady-state speed error |
<0.5% without encoder, <0.01% with encoder |
| Torque response time |
10ms |
| Torque accuracy |
2% in speed range of 2-100% and load range of 10-100% |
| Modulation technique |
hysteresis modulation |
| Special features |
no data |
| MEGADRIVE-LCI |
| Topology |
Current Source Inverter – Load Commutated Inverter |
| Input section |
SCR rectifier – 6, 12 or 24 pulses – inherent regenerative capability – CSI |
| Input voltage |
2100V, 3000V, 4500V, 6000V (6 pulses rectifier, air cooled); 2100V, 3700V, 5600V, 7100V, 8500V, 9800V, 11000V (6 pulses rectifier, liquid cooled); 2x1000V, 2x1500V, 2x2300V (12 pulses rectifier, 6 pulses inverter, air cooled); 2x2100V, 2x3000V; 2x4500V; 2×6000 (12 pulses rectifier, 12 pulses inverter, air cooled); 2x2100V, 2x3700V, 2x5600V, 2x7100V, 2x8500V, 2x9800V, 2x11000V (12 pulses rectifier, 12 pulses inverter, liquid cooled); 4x1000V, 4x1800V, 4x2700V (24 pulses rectifier, 12 pulses inverter, liquid cooled) |
| Efficiency |
>99% converter + DC link at rated load |
| Input power quality |
6 and 12 pulses – passive LC harmonic filter should be used to meet IEEE 519, 24 pulses meets IEEE 519 requirement, PF=0.85 approximately at rated speed/load, DC link current is regulated by adjusting rectifier alpha – low PF at low speed – needs compensation |
| DC link section |
DC link reactor |
| Output section |
SCR inverter – 6 pulses or 12 pulses (6-phase synchronous motor) |
| Output power |
4.5-32MW (6050-43000HP) air cooled, 7-72MW (9400-97000HP) liquid cooled – higher on request |
| Output voltage |
2000V, 2700V, 4100V, 5500V (6 pulses rectifier, air cooled); 2000V, 3400V, 5000V, 6600V, 7800V, 9000V, 10200V (6 pulses rectifier, liquid cooled); 2000V, 2700V, 4100V (12 pulses rectifier, 6 pulses inverter, air cooled); 2x2000V, 2x2700V; 2x4100V; 2×5500 (12 pulses rectifier, 12 pulses inverter, air cooled); 2x2000V, 2x3400V, 2x5000V, 2x6600V, 2x7800V, 2x9000V, 2x10200V (12 pulses rectifier, 12 pulses inverter, liquid cooled); 2x2000V, 2x3400V, 2x5000V (24 pulses rectifier, 12 pulses inverter, liquid cooled) |
| Output frequency |
0-60Hz, optional 0-120Hz |
| Field weakening |
no data |
| Switching frequency |
- |
| Output waveform |
high 5th and 7th current harmonic in a drive with 6-pulses inverter, in 12-pulses inverter 5th and 7th current harmonics are canceled – 6-phase motor is used |
| Motor type |
3-phase synchronous, 6-phase synchronous |
| Overload |
no data |
| Cooling |
forced air or liquid |
| Control scheme |
more information needed |
| Dynamic speed error |
no data |
| Steady-state speed error |
no data |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
- |
| Special features |
no data |
I will update this site frequently when I get more/new information on ABB drives specification. If you are able to enhance this table I would appreciate if you contact me or post a comment.
References:
- Bin Wu, High-Power Converters and AC Drives, Institute of Electrical and Electronics Engineers, 2006
- ACS 1000 Medium Voltage AC Drives for speed and torque control of 315 to 5000 kW / 400 to 6700 hp squirrel cage induction motors. Technical Catalog
- ABB ACS 1000 – Medium Voltage AC Drives (Drives)
- Direct Torque Control – the world’s most advanced AC drive technology. Technical Guide No. 1
- ACS 5000. Medium voltage AC drive for control of motors up to 6.9 kV
- ABB ACS 5000 – Medium Voltage AC Drives (Drives)
- ACS 6000. Medium voltage AC drives for control of 3 – 27 MW motors up to 3.3 kV
- ABB ACS 6000 – Medium Voltage AC Drives (Drives)
- MEGADRIVE-LCI. Medium voltage AC drive for control and soft starting of large synchronous motors
- ABB MEGADRIVE-LCI – Medium Voltage AC Drives (Drives)
- Medium Voltage AC Drives – Product Overview
- Product note. Medium voltage AC drive. ACS 2000, 400 – 1000 kVA, 6.0 – 6.9 kV.
- Product brochure. Medium voltage AC drive. ACS 2000, 400 – 1000 kVA, 6.0 – 6.9 kV.
Tags:
control schemes,
cooling,
efficiency,
market,
parameters,
producers,
specification,
speed control,
switching frequency,
technical data,
topology,
torque control No Comments »
