Alstom MV Drives Specifications
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
