Dulas designed and installed the Energy Storage System utilising five independent maximum power point tracking regulators (MPPT) to charge a 110.4kWh lithium-ion battery. A total of three single phase inverters, with a capacity of 15kVA each in a three phase arrangement (45kVA maximum power) provides conversion to AC. These inverters provide the capability to operate on or off grid as needed including the ability to charge the battery from the AC power grid if required. The inverters provide uninterruptable power to the building in the event of mains failures for around 5 hours from a fully charged battery, assuming a continuous load of 20kVA.
The system provides monitoring, control and logging from a local HMI, via Modbus TCP and LAN as well as the option to use cloud based monitoring if required.