• Control System

The LiFePO4 energy storage system is controlled by a programmable logic controller (PLC) and a human-machine interface (HMI). one of the key functions of the PLC system is to control the charging time and rate of the energy storage system. For example, the PLC receives real time data on the price of electricity and decides how quickly the battery system can be recharged based on the maximum allowable demand, the state of charge and the price comparison during peak/off-peak hours. This decision is dynamic and can be optimised on a case-by-case basis. It is integrated into the rest of the system by means of standardised communication inputs, control signals and power supply. It can be accessed via dial-up or the Internet. It has multiple defence layers to restrict access to its different functions and offers customised reporting and alarm functions for remote monitoring.

• Power Conversion System (PCS)

The function of the Power Conversion System is to charge and discharge batteries and to provide improved power quality, voltage support and frequency control for the local grid. It has a complex and fast-acting, multi-quadrant, dynamic controller (DSP) with dedicated control algorithms, capable of converting the output over the entire range of the device, i.e. cyclically from full power absorption to full power output. It works properly for any combination of reactive power and active and reactive power demand.

• Lithium iron phosphate battery stack

The stack is made up of a number of single cells. The Lithium Iron Phosphate battery pack energy storage system is capable of economically storing and delivering large scale power on demand, mainly in a stationary mode. It is a long-life, low-maintenance, high-efficiency technology that supports the stepless expansion of power and storage capacity. Energy storage systems are particularly effective for renewable energy suppliers, grid companies and end users.

Lithium iron phosphate energy storage systems can be applied in all parts of the electricity supply value chain, converting intermittent renewable electricity such as wind and solar into a stable electricity output; the optimal solution for supplying electricity in remote areas.

deferral of fixed investments in power grids, and applications for peak and valley reduction. Energy storage systems can also be used as a backup power source for substations and communication base stations. LiFePO4 energy storage systems are environmentally friendly, have the lowest ecological impact of any energy storage technology and do not use elements such as lead or cadmium as primary reactants.