On Thursday 15 June 2017, during the Australian Energy Storage Conference and Exhibition in Sydney, Michael Willemot presented the flywheel technology, the results and outcomes from a smart grid project in which Levisys was involved. Then Michael Willemot described where Levisys is heading in terms of objectives and strategy, including hybrid storage systems. Finally, he described why a hybrid storage system may be relevant for the Australian and Pacific Islands markets.

1. 1
Your partner
in the transition
to a renewable future
Smart ZAE, a renewable and energy storage smart
grid experience, involving different technologies,
to study all aspects of future grids

2. 2
Flywheels
Power ElectronicsElectric
Motor
Electric
Generator
Flywheel
Power Electronics
Energy Energy
Electric ElectricMechanical
Ek = K ⋅ mass ⋅ radius2 ⋅ RPM2

3. 3
Vacuum Flywheel (without magnetic levitation)
Magnetic Levitation Flywheel
1. Containment 5. Transformer
2. Flywheel 6. Vacuum pump
3. Motor-Generator 7. Input Current
4. Bearings 8. Output Current
Flywheel technology will play significant role
in the transition to a renewable future
• Short-duration storage technology
Flywheels

4. 4
Engie Ineo site in Toulouse, France
 650V DC Micro-grid
• Share local resources and
optimize distribution grid usage
 Energy storage
• Batteries
• Flywheels
 Home made EMS/PMS
 4 Partners
• Scle Sfe
• Lab (Laplace)
• PCS maker (Cirtem)
• Flywheel maker (Levisys)
 Started: Feb, 2012
 End: Jan, 2017
Real Case Study From The Smart ZAE Project

5. 5
 Hybrid Energy Storage System largely met expectations
• Respond as expected to grid signals
 Energy storage objectives for this project
• Plan/Monitor/Optimize use of local REN energy production
• Master consumption & power calls of area’s businesses
• Provide grid services
 What Hybrid Storage System made possible
• Modulate the consumption / production profile of the site
 Run the optimized energy profile
• Real-time management of production or consumption contingencies
• “Hybrid" system: distribution of grid requests on the two technologies
 Benefits
• Extended lifetime of batteries
• Increase reliability of the storage system
Real Case Study From The Smart ZAE Project

6. 6
EMS/PMS
Flywheels Batteries
Short Fluctuations (sec to min)
Long Fluctuations (hours)
• Renewable production smoothing
• Inrush power loads from area businesses
• Load shifting
• Peak shaving
Handled 70% of grid signals
Time
Energy(kWh)
Real Case Study From The Smart ZAE Project
 ESS captures:
• Scheduled Commands
• Real-time Events

7. 7
 Exceptional Efficiency: 97% DC-DC, 93% AC-AC
• Passive magnetic levitation technology
• High energy density rotor developed jointly with Airbus Industrie
• No cooling system
 Very long life time and reliability: > 350,000 cycles / 20 years = 48 cycles/24h full charge/discharge
 Very low operating cost (4% CAPEX / year, incl. cost of charging)
Levisys Flywheel

8. 8
 Electric machine – motor/generator: Developed by Levisys
• Synchronous reversible three-phase
• Contactless, sensorless machine with permanent magnets arranged on the surface
• Maximum speed = 14,000 rpm – 1,000 Hz electric
• Charge/discharge: up to C-8 rate
 Variable-frequency drive
• Partnering with major motion & control technologies companies
• Harmonic ratio and synchronism well controlled
0 5 10 15 20 25 30
0
10
20
30
40
50
Time (mn)
Power(kW)
Power supplied by
a LEVISYS flywheel
13.5 kWh / 40 kW
Levisys Flywheel

9. 9
 Proprietary storage technology: high efficiency flywheels
 Access to supply of the most popular technology
• LiFePO4 batteries from BYD – 1st world manufacturer
• Historic cooperation agreement between Levisys and BYD in October
2016
 Our Mission
Support the energy transition for a full deployment of renewable energies
 Increases Value Proposition
 Stabilize electricity grid
 Integrate more renewables
LEVISYS – Energy Storage Specialist

10. 10
 Cost-effectiveness: address multi-applications
• Short cycles and long cycles
• Reconcile supply and demand
• Network and System support services
 Hybrid storage systems
Combine strengths of both technologies for Power & Energy needs
Optimal Solutions

11. 11
 Australia: very promising market
• Booming solar and wind penetration
• Main grid & Fragmented grids
-> densely populated areas to isolated grids in remote places
Australia & Pacific Islands Markets
 Relevance of Hybrid Storage System
• Provide inertia (synthetic & mechanical) to grids
• Grid balancing
• Frequency control
 Pacific Islands: Isolated grids relying on fossil fuels for inertia
• Increase renewable integration
• Reduce costly fuel consumption

12. 12
Your partner
in the transition
to a renewable future
Smart ZAE, a renewable and energy storage smart
grid experience, involving different technologies,
to study all aspects of future grids