power electronics

VDM25000 Naval Marine Drive

Power Conversion’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.

Product range 10MW to 50MW and higher

PROVEN TECHNOLOGY

• 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 Power Conversion and partner sites

Compact Configuration:

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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