Medium Voltage Drives

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 [...]

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 [...]