Converteam MV7000 medium voltage drive technical data:
| MV7000 |
| Topology |
3-level Neutral Point Clamped Voltage Source Inverter |
| Input section |
Diode 12-pulse or 24-pulse or HV IGBT based 3L-NPC AFE |
| Input voltage |
3300V or 6600V |
| Efficiency |
98.8% at rated load for drives with diode rectifier, 98.6% for active front end rectifier at PF=0.9 and excluding all auxiliary devices |
| Input power quality |
12-pulse IEEE 519 compliance – In/Isc ratio dependent, 24-pulse and AFE meets IEEE 519; PF>0.96 at rated load for diode rectifier, and PF=1 at rated load for AFE rectifier |
| DC link section |
common DC link capacitors |
| Output section |
HV IGBT based 3-level NPC voltage source inverter |
| Output power |
3300V drives: 3000-16800kW (4021-22520HP); 6600V drives: 12000-33600kW (16085-45040HP) |
| Output voltage |
0-3300V; 0-6600V |
| Output frequency |
0-90Hz; higher up to 300Hz on request |
| Field weakening |
no data |
| Switching frequency |
no data |
| Output waveform |
5-level line-to-line voltage waveform |
| Motor type |
induction or synchronous |
| Overload |
no data |
| Cooling |
water-cooled |
| Control scheme |
flux vector control |
| Dynamic speed error |
no data |
| Steady-state speed error |
<0.5% without encoder and <0.1% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
hysteresis modulation |
| Special features |
- |
References:
- MV7000. Entering a new dimension for reliability and performance in medium-voltage AC drives
Ansaldo Sistemi Industriali (ASI) medium voltage drives technical data:
| Silcovert TN |
| Topology |
3-level Neutral Point Clamped Voltage Source Inverter |
| Input section |
Diode 12-pulse or 24-pulse or HV IGBT based 3L-NPC AFE |
| Input voltage |
3300V |
| Efficiency |
>98% at rated load for drives with diode rectifier, AFE – no data |
| Input power quality |
12-pulse IEEE 519 compliance – In/Isc ratio dependent, 24-pulse and AFE meets IEEE 519; PF>0.96 at rated load for diode rectifier, >0.98 for active front end |
| DC link section |
common DC link capacitors |
| Output section |
HV IGBT based 3-level NPC VSI |
| Output power |
air cooled: 1170-4740kW (1568-6356HP); water cooled: 1390-12570kW (1864-16856HP) |
| Output voltage |
0-3300V |
| Output frequency |
normal: 5-70Hz; extended: 5-140Hz |
| Field weakening |
no data |
| Switching frequency |
no data |
| Output waveform |
5-level line-to-line voltage waveform |
| 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 |
| Cooling |
air-cooled or water-cooled |
| Control scheme |
V/Hz, Sensorless Vector Control, FOC (with encoder) |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.01% with encoder |
| Torque response time |
5ms |
| Torque accuracy |
no data |
| Modulation technique |
hysteresis modulation |
| Special features |
- |
| Silcovert GN |
| Topology |
3-level Neutral Point Clamped Voltage Source Inverter |
| Input section |
Diode 12-pulse or 24-pulse or IGCT based 3L-NPC AFE |
| Input voltage |
3300V |
| Efficiency |
>98% at rated load |
| Input power quality |
12-pulse IEEE 519 compliance – In/Isc ratio dependent, 24-pulse and AFE meets IEEE 519; PF>0.98 |
| DC link section |
common DC link capacitors |
| Output section |
IGCT based 3-level NPC VSI |
| Output power |
7000-17800kW (9387-23870HP) |
| Output voltage |
0-3000V for diode rectifier; 0-3300V for AFE |
| Output frequency |
normal: 10-65Hz; extended: 10-110Hz |
| Field weakening |
no data |
| Switching frequency |
no data |
| Output waveform |
5-level line-to-line voltage waveform |
| 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 |
| Cooling |
water-cooled |
| Control scheme |
FOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.01% with encoder |
| Torque response time |
5ms |
| Torque accuracy |
no data |
| Modulation technique |
hysteresis modulation |
| Special features |
- |
| Silcovert S |
| Topology |
Load Commutated Inverter |
| Input section |
SCR 6-pulse, 12-pulse or 24-pulse |
| Input voltage |
6000V |
| Efficiency |
>98,5% at rated load |
| Input power quality |
6-pulse does not meet IEEE 519; 12-pulse IEEE 519 compliance – In/Isc ratio dependent, 24-pulse and AFE meets IEEE 519; PF – varying with the load – reactive power compensation is necessary |
| DC link section |
DC link reactor |
| Output section |
6-pulse or 12-pulse SCR load commutated inverter |
| Output power |
1-40MW (1341-53640HP) |
| Output voltage |
0-6000V |
| Output frequency |
0-120Hz |
| Field weakening |
no data |
| Switching frequency |
load commutation |
| Output waveform |
high output current harmonics resulting torque pulsations especially for 6-pulse inverters |
| Motor type |
synchronous |
| Overload |
no data |
| Cooling |
forced-air- or water-cooled |
| Control scheme |
no data |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.01% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
load commutation |
| Special features |
high efficiency |
| Silcovert C |
| Topology |
Cycloconverter |
| Input section |
3 antiparallel SCR 6-pulse converters or 3 antiparallel SCR 12- pulse converters |
| Input voltage |
1200-1500V |
| Efficiency |
>95% at rated load |
| Input power quality |
PF – varying with the load |
| DC link section |
no DC link |
| Converter power |
3650-10700kVA air-cooled; 3750-11400kVA water-cooled |
| Output voltage |
0-1500V for 6-pulse; 0-3300V or 0-4160V for 12-pulse configuration |
| Output frequency |
0-24Hz, up to 720 rpm for 2-pole motor and 60Hz main frequency |
| Field weakening |
no data |
| Switching frequency |
natural commutation |
| Output waveform |
no data |
| Motor type |
synchronous or induction |
| Overload |
no data |
| Cooling |
air- or water-cooled |
| Control scheme |
no data |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.01% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
natural commutation |
| Special features |
low speed, high torque applications |
References:
- Technical Brochure. SILCOVERT-TN, 3300V, 1300 to 14400kVA
- Technical Brochure. SILCOVERT-GN, 9000 to 36000kVA
- SILCOVERT S. MV LCI Drives for synchronous motors and generators up to 40MW
- SILCOVERT C. Direct AC/AC Cycloconverter
- Ansaldo Sistemi Industriali Power Electronics for Industrial Applications
Alstom medium voltage drives technical data:
| Alspa VDM5000 |
| Topology |
2-level Voltage Source Inverter |
| Input section |
Diode/SCR 6-, 12-, 18- pulse rectifier; HV IGBT with Active Energy Management |
| Input voltage |
2300-4160V |
| Efficiency |
no data |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements, 12-pulse IEEE 519 compliance – In/Isc ratio dependent, 18-pulse and AFE meets IEEE 519; PF>0.97 at rated load |
| DC link section |
common DC link capacitors |
| Output section |
HV IGBT 2-level VSI |
| Converter power |
1.4-7.2MVA |
| Output voltage |
0-2300V, 0-3300V, 0-4160V |
| Output frequency |
max 130Hz |
| Field weakening |
5:1 for synchronous motor, 3:1 for induction motor |
| Switching frequency |
no data |
| Output waveform |
3-level line-to-line voltage waveform, high dv/dt |
| Motor type |
induction or synchronous |
| Overload |
no data |
| Cooling |
liquid |
| Control scheme |
FOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.5% without encoder, 0.01% with encoder |
| Torque response time |
2-8ms |
| Torque accuracy |
no data |
| Modulation technique |
no data |
| Special features |
- |
| Alspa VDM6000 |
| Topology |
4-level Flying Capacitor Voltage Source Inverter |
| Input section |
Diode/SCR 6-, 12-, 18- pulse rectifier; HV IGBT with Active Energy Management |
| Input voltage |
4160V – air cooled, 3300V water cooled |
| Efficiency |
>98%, >96.5% with isolation transformer |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements, 12-pulse IEEE 519 compliance – In/Isc ratio dependent, 18-pulse and AFE meets IEEE 519; PF>0.97 at rated load |
| DC link section |
common DC link capacitors + 2 isolated capacitors per phase |
| Output section |
HV IGBT 4-level flying capacitor VSI |
| Converter power |
0.3-3MVA air cooled, 2.2-8MVA water cooled |
| Output voltage |
0-2300V, 0-3300V, 0-4160V |
| Output frequency |
60Hz air-cooled, 130Hz water-cooled |
| Field weakening |
5:1 for synchronous motor, 3:1 for induction motor |
| Switching frequency |
no data |
| Output waveform |
7-level line-to-line voltage waveform |
| Motor type |
induction or synchronous |
| Overload |
variable torque: 110% FLC for 60s (10% duty cycle); constant torque: 150% FLC for 60s (10% duty cycle) |
| Cooling |
air, water |
| Control scheme |
FOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.5% without encoder, 0.01% with encoder |
| Torque response time |
2-8ms |
| Torque accuracy |
no data |
| Modulation technique |
no data |
| Special features |
- |
| Alspa VDM7000 |
| Topology |
3-level Neutral Point-Clamped Voltage Source Inverter |
| Input section |
Diode/SCR 6-, 12-, 18- pulse rectifier; GTO with Active Energy Management |
| Input voltage |
3300V |
| Efficiency |
no data |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements, 12-pulse IEEE 519 compliance – In/Isc ratio dependent, 18-pulse and AFE meets IEEE 519; PF>0.97 at rated load |
| DC link section |
2 capacitors |
| Output section |
GTO 3-level NPC VSI |
| Converter power |
7-9.5MVA |
| Output voltage |
0-3300V |
| Output frequency |
60Hz |
| Field weakening |
5:1 for synchronous motor, 3:1 for induction motor |
| Switching frequency |
no data |
| Output waveform |
5-level line-to-line voltage waveform |
| Motor type |
induction or synchronous |
| Overload |
no data |
| Cooling |
water |
| Control scheme |
FOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.5% without encoder, 0.01% with encoder |
| Torque response time |
2-8ms |
| Torque accuracy |
no data |
| Modulation technique |
no data |
| Special features |
- |
| Alspa CDM8000 |
| Topology |
Current Source Inverter |
| Input section |
SCR 6-, 12- pulse rectifier; GTO with Active Energy Management |
| Input voltage |
up to 10kV |
| Efficiency |
no data |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements, 12-pulse IEEE 519 compliance – In/Isc ratio dependent, AFE meets IEEE 519; PF – no data, adjustable at rated load |
| DC link section |
DC link reactor |
| Output section |
PWM CSI |
| Converter power |
5-8MVA for 6kV, 8.3-13.5MVA for 10kV |
| Output voltage |
0-6000V, 0-10000V |
| Output frequency |
max. 240Hz |
| Field weakening |
1.2:1 |
| Switching frequency |
no data |
| Output waveform |
PWM motor current smoothed by output capicators |
| Motor type |
induction |
| Overload |
no data |
| Cooling |
air, water |
| Control scheme |
FOC |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.5% without encoder, 0.01% with encoder |
| Torque response time |
<20ms |
| Torque accuracy |
no data |
| Modulation technique |
no data |
| Special features |
dv/dt<20V/µs at 200Hz and motor voltage 10kV |
| Alspa SD7000 |
| Topology |
Load Commutated Inverter |
| Input section |
SCR 6-, 12-, 24- pulse rectifier |
| Input voltage |
up to 10kV |
| Efficiency |
no data |
| Input power quality |
6-pulse rectifier doesn’t meet IEEE 519 requirements, 12-pulse IEEE 519 compliance – In/Isc ratio dependent, 24-pulse meets IEEE 519; PF – varying with the load – reactive power compensation is necessary |
| DC link section |
DC link reactor |
| Output section |
SCR 6-, 12-, 24- pulse load commutated inverter |
| Converter power |
2-10MVA for air cooled drive, 5-100MVA for water cooled drive |
| Output voltage |
1000-10000V |
| Output frequency |
100Hz |
| Field weakening |
1.1:1 |
| Switching frequency |
load commutation |
| Output waveform |
high output current harmonics resulting torque pulsations especially for 6-pulse inverters |
| Motor type |
synchronous |
| Overload |
no data |
| Cooling |
air, water |
| Control scheme |
no data |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.5% without encoder, 0.01% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
load commutation |
| Special features |
high efficiency |
| Alspa CL9000 |
| Topology |
Cycloconverter |
| Input/output section |
3 antiparallel SCR 6- pulse converters |
| Input voltage |
2300-13800V with transformer |
| Efficiency |
no data |
| Input power quality |
low supply harmonics – 18-pulse, PF is a function of speed |
| DC link section |
no DC link |
| Converter power |
2-12MVA for air cooled drive, 5-100MVA for water cooled drive |
| Output voltage |
1-4kV air cooled, 1-5kV water cooled |
| Output frequency |
20Hz (600RPM, 4-pole motor) for 50Hz supply voltage 24Hz (720RPM, 4-pole motor) for 60Hz supply voltage |
| Field weakening |
5:1 for synchronous motor, 3:1 for induction motor |
| Switching frequency |
natural commutation |
| Output waveform |
no data |
| Motor type |
synchronous or induction |
| Overload |
no data |
| Cooling |
air, water |
| Control scheme |
no data |
| Dynamic speed error |
no data |
| Steady-state speed error |
0.5% without encoder, 0.01% with encoder |
| Torque response time |
no data |
| Torque accuracy |
no data |
| Modulation technique |
natural commutation |
| Special features |
low speed, high torque applications |
References:
- ALSPA Drive Range. Drive solutions for all applications
- Innovative Medium Voltage Drives. ALSPA VDM/CDM
- Medium Voltage Drive. ALSPA CDM 8000
- Symphony. Air Cooled Medium Voltage AC Drives
- Update of product information brochure. Symphony – Air Cooled Medium Voltage AC Drives – ALSPA VDM6000A
