The Switch DC-Hub

The Switch DC-Hub is built from our proven building blocks to provide a vessel with a flexible choice of power generation, energy storage, charging, propulsion power and clean power – all connected to the DC bus, the backbone of The Switch DC-Hub. It comes with a suite of four game-changing building blocks to secure ride-through operations. Vessels can continue operating at full power, unaffected by any electrical fault.

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These proven blocks make it easy for you to build your own DC-Hub to fit the exact needs of your vessel. For system integrators, our simulator allows you to develop the configuration without hardware. Our maintenance tools are purpose-built for the job.

The Switch DC-Hub includes the following building blocks:

Motor/generator inverter (MI/GI)
Active front end (AFE) for grid connection
Electronic Bus Link (EBL) to connect DC-Hubs together
DC/DC chopper to connect DC sources to the system

Marine-specific design

Future-flexibility	No compromises in features, materials or solutions
Durability	Very simple and robust cabinet structure
Copper-based cooling system	No water station needed, can be connect to a vessel’s freshwater cooling system
Smooth operations	Stiff pedestal and vibration dampers under cabinet
IP44 enclosure for both power module and cabinet	Robust for the environment and protects sensitive components against failure

Full suite for safety

The Switch Electronic Bus Link

Technology

The Switch Electronic Bus Link (EBL) connects the vessel’s DC-Hubs and protects against faults between DC-Hubs. The DP3-rated and DNV-approved EBL provides protection outside the DC-Hub by splitting onboard grids in microseconds to isolate any faulty DC-Hub.

Ensures complete redundancy
Forms a ring network from multiple DC-Hubs
Guarantees selectivity between DC-Hubs
DP3 tested and approved by DNV

The Switch Electronic DC Breaker

Technology

The Switch Electronic DC Breaker (EDCB) protects against short-circuit faults inside a DC-Hub and ensures ride-through. The semiconductor-based device disconnects any failing drive module within 10 microseconds from the common DC link.

Ensures least possible energy disruption
Cuts and isolates faults within 10 microseconds
Integrated in every inverter connected to a common DC link
Prevents any voltage drop, enabling ride-through

The Switch Electronic Current Limiter (ECL)

Connects the battery directly to the DC link to protect it from external failure and ensure ride-through. It functions similar to the EBL.

The Switch Battery Short-Circuit Limiter (BSCL)

Restricts any short-term current from batteries, immediately blocking the short-circuit system. This allows more batteries to be connected to the electrical system and fewer DC-Hubs, making the entire system more compact.

Easy to configure with our library of building blocks

Choose building blocks from the library
- Application
- Electrical parameters
Select your DC link configuration
Define your power scope and physical size

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Power Modules

High-power module with EDCB for high-power applications.

Flexible module with EDCB to combine functionalities

Half module with EDCB for small powers

Electronic Bus Line (EBL) connects The Switch DC-Hubs together

Built specifically for marine

Integrated EDCB	A dedicated, fast and predictable protection device for the power module
Robust power modules for marine	No compromises in features, materials or solutions
Digital gate driver with fast measurements	Provides accurate data for condition monitoring
No du/dt filters needed	Simplified maintenance, save costs
Fast connectors in power module	Enables fast and and easy service by the vessel crew
IP44 enclosure for both power module and cabinet	Robust for the environment and protects sensitive components against failure