LS Industrial Systems MV Drives Specifications
LS Industrial Systems has recently entered the medium voltage drives market with the new product – LSMV. It is a cascaded multilevel H-bridge type inverter. Technical specifications of the drive are available below.
3MVA, 6600V LSMV Variable Frequency Drive
| LSMV | |
|---|---|
| Topology | Cascaded H-Bridge Multilevel Inverter |
| Input section | Diode 18-pulse or 36-pulse rectifier |
| Input voltage | 3300V, 4160V, 6600V, 10000V |
| Efficiency | 97% at rated load |
| Input power quality | 18-pulse and 36-pulse meet IEEE 519 compliance; PF>0.95 for 20-100% load range, |
| DC link section | each single-phase cell has its own capacitor |
| Output section | series connected LV IGBT H-bridges |
| Converter power | 3300V drives: 200-3700kVA; 4160V drives: 250-4700kVA; 6600V drives: 400-7500kVA; 10000V drives: 600-11000kVA |
| Output voltage | 0-3300V, 0-4160V, 0-6600V, 0-10000V |
| Output frequency | 5-120Hz |
| Field weakening | no data |
| Switching frequency | no data |
| Output waveform | voltage rating dependent |
| Motor type | induction |
| Overload | 120% rated current for 1 min. |
| Cooling | air-cooled |
| Control scheme | V/f, sensorless vector control |
| Dynamic speed error | no data |
| Steady-state speed error | 0.1% |
| Torque response time | no data |
| Torque accuracy | no data |
| Modulation technique | phase-shifted or level-shifted modulation |
| Special features | - |
Thank you to the LS Industrial Systems team for providing me reference materials.
References:
- Perfect Energy Saving Drive. LS Medium Voltage VFD
