Electrification’s medium voltage VDM25000 drive is a modular, multiphase naval marine drive, fully shock-rated and available as direct sea water or fresh-water cooled.

VDM25000 Naval Marine Drive

Product range 10MW to 50MW and higher

Electrification’s medium voltage VDM25000 drive is a modular, multiphase naval marine drive, fully shock-rated and available as direct sea water or fresh-water cooled.

• Operational excellence for over a decade in naval ships’ electric grids of up to 110 MW, providing electric ship power and propulsion.
• Proven to energize mission capability on the latest generation of naval platforms, including aircraft carriers (QE Class) and destroyers (Type 45, DDG1000) and powering land-based test and emulation platforms (US Navy ITF; MPTF).
• Full load torque at all speeds when motoring.
• Build-to-print configuration enabling manufacture at Electrification and partner sites

  • Medium voltage (MV) transformer-less connection; smooth operation with marine electrical power systems in 50 Hz or 60 Hz power networks.
  • Compact and modular configuration and construction with easily removable modular items for improved maintainability and reliability.
  • Interchangeable building blocks –supply and machine bridge modules.
  • Enhanced internal cooling to improve compactness.
  • Easy serviceability; front access, easy replacement of modules without water leakage

Low Noise
  • Powerful controller for low noise & vibration signature & communication with ship systems
  • Smooth output voltage waveforms from each converter phase before reaching the motor windings.
  • Bespoke converter circuit for each motor phase for smooth waveform and low EMC.
High Redundancy
  • Flexible, resilient multi-phase architecture and independent multi-channel arrangement with high redundancy.
  • Shock rated, validated by detailed analysis.
  • Key part of Ship’s Electric Grid, enabling flexible design layout for improved survivability.
PWM voltage source inverter
  • Able to operate on 1, 2 or 3 and more channels.
    • Independent converter channels per group of motor windings
    • Bi-directional speed regulated drive with dynamic braking
  • Isolation of voltage disturbances created from the ship’s supply by each channel.
  • Compensates for ship’s supply fluctuations.
  • Protects ship’s supply from converter disturbances.

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