DC Coupled Energy Storage System
The PVS 500 DC-Coupled Energy Storage System comes with 3 Solectria XGI 166 Inverters, a Plant Master Controller and a bi-directional DC/DC
Find out more. This bi-directional 500kW DC/DC converter is designed to interface battery energy storage with new and existing 1000V and 1500V central inverter-based PV power plants.
With DC-coupled energy storage, the energy storage system can operate and maintain the DC bus voltage when the PV inverter is offline for scheduled or unplanned outages, allowing energy from the array to flow to the batteries and ensuring energy can be harvested for later use.
PV inverters typically require a minimum 'wake up' threshold DC bus voltage to operate, resulting in lost energy in the morning and evening or during periods of cloud coverage when voltage on the array is below the PV inverter 'wake up' threshold. Adding DC-coupled energy storage allows for the capture of this generated energy from the margins.
This DC to DC converter can operate in voltage, current, and power control modes, and is capable of on-the-fly switching between modes. Designed to be easily scaled, any combination of up to six units can be paralleled together to create building blocks of up to 3MW of storage power.
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