TechnologyLive demo
see the system think
The four scenes from our expo stand, rebuilt for the web. Scroll to play them forwards and backwards, or jump to the key moments. Every number is shown as it changes.
01 · Phase switching
Mixed-phase cars, one connection
Every car is different
Every car charges differently
Some cars charge on one phase, some on three. Many start on one, step up to two and three phases, then step back down as the battery fills.
- Every car is different: Every car charges differently. Some cars charge on one phase, some on three. Many start on one, step up to two and three phases, then step back down as the battery fills.
- Problem: Everything lands on phase 1. Single-phase cars and building devices default to L1. Phase 1 runs at 92% while phases 2 and 3 sit at about 30%.
- The real cause: One more car trips the fuse. L2 and L3 still have about two-thirds of their capacity free. The connection was big enough; the load was on the wrong phase. L1 overloads, the main fuse trips and every car stops charging.
- Solved: VOOL phase switching. The load controller measures L1, L2 and L3 and switches each charger to the phase with the most headroom, again every time a car changes phases. Same cars, same 3 × 63 A fuse, nothing trips.
- Value: Room for more cars. A fifth car charges on the same connection. This headroom is how up to six times more chargers fit on an existing connection.
02 · Residences
Concept #3: 24 hours in a residence
12:00
Daytime: most cars are away
In a typical residence 80% of the cars leave in the morning and return in the evening. The car that stays home is topped up when daytime prices are lowest.
- 12:00: Daytime: most cars are away. In a typical residence 80% of the cars leave in the morning and return in the evening. The car that stays home is topped up when daytime prices are lowest.
- 18:00: Every car plugs in on arrival. Between 17:00 and 20:00 most cars come home. Every space has its own charger, so nobody waits for a free one and nobody moves cars around at night.
- 19:30: Evening peak: building 400 A, chargers 100 A. The building takes 400 A of the 500 A connection. Only the cars set to Charge now draw the remaining 100 A, with priority and at the hour's market price. Nothing trips.
- 20:30: One tap moves charging to the night. The driver in bay 5 switches from Charge now to Cheapest energy with a ready-by time of 07:25. The car stops paying peak prices and finishes at night.
- 03:00: Night: building 100 A, chargers 400 A. The building is quiet and prices fall. The cars set to Cheapest energy charge in the cheapest hours, at full power.
- 07:00: Every car ready on time. Every plugged-in car has reached its target before its own departure time, whichever mode the driver chose, all on one 500 A connection.
03 · Fleet depot
50 vans on one 125 A connection
13:00
Daytime: the depot is empty
The 50 vans are out from 07:00 to 15:00, about 65 km each. The solar roof supplies the building.
- 13:00: Daytime: the depot is empty. The 50 vans are out from 07:00 to 15:00, about 65 km each. The solar roof supplies the building.
- 15:30: All 50 vans plug in. Without load management they would all start at once: 50 × 16 A = 800 A, a new transformer and higher peak grid fees.
- 16:00: Solar and cheap hours first. The system charges while the sun still produces, never above 125 A, about 87 kW for the whole depot.
- 19:00: The evening peak is skipped. From 17:00 to 22:00 energy is at its most expensive. Charging waits, because the vans have until morning.
- 02:00: Night: the cheapest energy, never above 125 A. The 125 A are shared across all vans through the night. Peak power stays low, and so do the grid's power-based fees.
- 07:00: All 50 vans full by 07:00. The whole fleet is charged on a capacity sized for about eight chargers, without a new transformer.
04 · DC and storage
40 kW to 1.6 MW, storage, EMS
Peak price
The peak is covered by the battery
At a peak price of about €170/MWh, solar and the battery cover a 1.6 MW truck session. Grid import drops to about 100 kW.
- Peak price: The peak is covered by the battery. At a peak price of about €170/MWh, solar and the battery cover a 1.6 MW truck session. Grid import drops to about 100 kW.
- Grid support: Grid support in seconds. The grid frequency dips to 49.87 Hz and the battery discharges over 1 MW within seconds. The EMS can offer this response on balancing markets.
- Solar surplus: Solar used on site, by priority. 1.6 MW of solar: the building first, then 1 MW to the DC chargers, the rest to AC charging with VOOL load management. Nothing is wasted.
See it with real hardware
The same scenes run on the screen in our showroom in Luxembourg-Hamm, next to the chargers and the controller.