1. Paul Atherton Key Account Manager
DC-huBS & EBL
Paul Atherton
Key Account Manager

2. Looking forward
To explore further opportunities in the rapidly maturing business of environmental energy.
The Switch is the Yaskawa Environmental Energy Division.
Our technology, The Switch DC-Hub with the unique electronic bus link (EBL) and permanent magnet machines, are navigating the way to produce, transfer and consume energy in the most efficient way.

3. Future shipping How to reduce greenhouse gas emissions (GHG)?
Technical measures
Increasing efficiency
Operational measures
Slower ship speeds
Ship-port coordination
Shore power
Alternative fuels
LNG
Sustainable biofuels
Ammonia
Hydrogen
Technical advancement and operational improvements are not contributing enough to decarbonize the shipping industry.
GHG emissions
Time
Technical measures, hull design, PM technology, batteries, DC-hub solutions.. VOC systems, using waste on board shuttle tanker as fuel etc. Waste heat recovery. These are substantial part of the needed emission reductions.
Operational measures, reduce transit speed of vessels. Ports Shanghai/Hongkong etc large ships waiting to come to port. Reduction of ship waiting time before entering a port.

4. DC-hubs
The Switch DC-Hub is a multi-source and multi-load DC system, based on standardized Power Drive units. This solution offers a wide and flexible choice of power generation, energy storage, charging, propulsion power and clean power for any ship system.

5. traditional Standalone drive solution
System consists of 2 AC-SWBDs + 7 frequency converters + potential transformers. Total of 9 cabinets.

6. DC-hub solution
9 different cabinets, down-sized to two DC-hubs.

7. Comparison – Traditional AC system vs DC-hubs

8. EBL – Electronic Bus link

9. Short introduction to ebl
Connects DC-Hubs together
Ultra rapid disconnecting in case of short circuit
Disconnects in approximately 10 microseconds
Improves redundancy while enabling fuel saving

10. Short introduction to ebl
Connects DC-Hubs together
Ultra rapid disconnecting in case of short circuit
Disconnects in approximately 10 microseconds
Improves redundancy while enabling fuel saving

11. RETROfit – simplified original system

12. RETROfit – adding dc-hubs

13. RETROfit – benefits G B B B

14. Future-proofing the solution
DC-Hub 1
DC-Hub 2
DC-Hub 3
EBL 1
EBL 2
EBL 3
EBL 4
EBL 5
EBL 6
DC-Hub x
EBL 7
EBL 8

15. Advantages of DC-HUBS with EBL
Save space on board
Be redundant
Meet new emission regulations
Operate silently
Stay flexible
EBL gives:
Increased redundancy with the help of several DC-Hubs in a network
Garanteed selectivity between hubs for increased personnel safety
Operation with closed buslink gives possibility to reduce fuel consumption
Reduce the amount of power generating sources
DC-Hub:
Several types of energy sources can easily be connected
Variable speed operation of gensets for reduced fuel consumption
Utilization of regenerated energy
Reduced volume and weight compared with AC systems
Avoid an AC switchboard
No/reduced need of transformers in the system
Case study
Type
Relative weight
Relative volume
AC with AFE*)
100%
DC-Hubs
83%
85%
*) No transformers included

16. Thank you for your time!