Medium Voltage
Variable Speed Drive System
Electric motors & drive systems for process optimization
Power Conversion's Medium Voltage Variable Speed Drive Systems (VSDS) feature a unique combination of Voltage Source Inverter (VSI) or Load Commuted Inverter (LCI) and an electrical motor. They are suitable for most applications.
Power capacity
- Up to 47 MW with a single VSI drive panel
- Up to 100 MW with parallel panels
- Up to and 13.8 kV output motor voltage
- N+1 power cells redundancy
Available topologies
- Direct Front End
- Active Front End with reactive power generation & power factor control up to unit
- Transformer-less up to 13.8 kV for footprint, reliability and efficiency optimization and improved grid quality
We propose the complete system engineering including grid harmonics study and mechanical shaft analysis.
Available configurations
CONVENTIONAL SPEED (4-6 POLES, SYNCHRONOUS OR INDUCTION)
Up to 1,800 rpm
HIGH SPEED (2 POLES, SYNCHRONOUS OR INDUCTION)
Up to 21,000 rpm
Either stand-alone or integrated configuration
HIGH TORQUE (8 POLES AND ABOVE, SYNCHRONOUS ONLY)
Our very low speed, high torque solution for petrochemical applications features a VSI combined with a low-speed synchronous motors (8 poles and above).
For reciprocating compressor applications, we recommend the use of VSI over LCI as it allows a low level of torque pulsation and motor compactness.
Benefits
- High efficiency: 95%+
- Full flexibility -Speed range from 0 to 105%
- Full flexibility available in terms of power demand, up to 100 MW
- Very high starting and operating reliability and availability: starting time <1 min
- Emission-free solutions/Fit with environmental restrictions
- Minimum maintenance period over life cycle
- Low operation maintenance cost
- Suitable for most areas, incl. with limited power availability
- Real-time simulation for efficient commissioning