Wärtsilä Medium Voltage Power Drive

The new Medium Voltage Power Drive is specifically designed for the marine market, accommodating higher power  requirements for propulsion, pumps, hoists, and compressors. The drive is designed to accurately control speed, torque, and power for induction, permanent magnet and synchronous machines.

The drive is optimized for safe and reliable operation. It is extremely compact and, compared to other solutions on the market today, has notable space and weight advantages. The Medium Voltage Power Drive accepts  6.6kV  input voltage, and can drive 6.0 kV motors at a power of 11MW.

Together with Wärtsilä’s patented medium voltage Low Loss Concept (LLC), the introduction of next generation medium voltage power drives brings increased efficiency and redundancy to the larger marine electric propulsion market, with the added benefit of reduced weight and space requirements.


    Technical data
    Wärtsilä Medium Voltage Power Drive
    Supply voltage 6 600 VAC
    Motor voltage 6 000 VAC
    Motor power 11 000 kW (pf > 0.88 and motor efficiency > 0.97)
    Apparent output power normal duty 13 000 kW
    Max. output frequency 200 Hz (with derating)
    Control Vector control/PWM output
    Switchboard connection Direct with LLC or propulsion transformer
    Cooling method Water
    External cooling water 10–38°C fresh water
    Protection IP32, IP44 on request
    Dimensions converter (mm) 5 100 x 1 200 x 2 370 (width x depth x height)
    Dimensions cooling unit (mm) 1 000 x 1 200 x 2 370 (width x depth x height)

    Press releases

    E&A acquisition

    With the acquisition of L-3 Marine Systems International (MSI) Wärtsilä broadens its offering within the area of Electrical & Automation. We now have extensive experience in supplying automation, navigation, communication, electrical distribution, electrical power & propulsion, dynamic positioning, sonar and underwater communications, entertainment, safety and security technologies, for a wide variety of vessel types. These products and systems are well regarded in the cruise & ferry, commercial cargo, offshore and oil & gas markets as well as with navies around the world.

    The products of Wärtsilä SAM Electronics, Wärtsilä Valmarine, Wärtsilä Lyngsø Marine, Wärtsilä Dynamic Positioning & Control Systems, Wärtsilä JOVYATLAS EUROATLAS, Wärtsilä Elac Nautik, Wärtsilä FUNA and Wärtsilä APSS, are well known and respected throughout the industry. With our resources in Norway we can now proudly claim that this makes Wärtsilä the marine industry’s leading E&A provider. We can now provide our customers with the latest technologies and greater opportunities for meeting their present and future needs.

    Read more about our acquisitions


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