Selection: 6 x ECube 60AP batteries in parallel.
Rationale: The total energy storage requirement is 360kWh. In order to achieve redundancy and flexibility in parallel operation, we chose a parallel configuration of six ECube 60AP batteries. This not only meets the energy storage requirements, but also provides better system stability and maintainability.
Benefits: The parallel solution allows individual batteries to be connected in parallel.
Advantage: The parallel solution allows individual battery modules to be maintained or replaced independently without affecting the operation of the entire system, while providing higher energy density and discharge efficiency.
Selection: 30kW PCS.
Rationale: Based on the farm s average peak power demand and emergency back-up requirements, the 30kW PCS power configuration ensures that the system provides sufficient power output when needed, while efficiently storing excess power in the batteries in the event of a surplus of PV power.
Advantage: The optimized PCS power configuration avoids over-investment while ensuring efficient system operation and a long service life.
Selection: 90kW PV system based on 5 hours of effective power generation per day.
Rationale: Based on the light conditions in the Midwest, we expect about 5 hours of effective sunlight per day. Therefore, a 90kW PV system would be able to generate enough power during these hours to meet the farm s power needs for most of the day.
Benefits: This configuration ensures that the PV system can generate more power than the farm needs immediately when there is sufficient sunlight, creating conditions for battery storage and reducing dependence on the grid.
Battery Energy Storage | ||||||||
| Cell Chemistry | Module Energy (kWh) | Module Nominal Voltage (V) | Module Capacity (Ah) | Battery Module Combination | System Nominal Voltage (V) | System Operating Voltage (V) | System Energy (kWh) | Charge/Discharge Current (A) |
| LiFePO4 | 5.12 | 51.2 | 100 | 6S2P | 307.2 | 281.25~340.8 | 61.44*6 | 100*6 |
PV Input | ||||||||
| Max. Power(kW) | Max. Voltage(V) | Start-up Voltage(V) | Rated Voltage(V) | MPPT Voltage Range(V) | Number of MPP Trackers | Max. PV Input Current(A) | ||
| 45 | 550 | 80 | 360 | 80-520 | 4 | 40/40/40/40 | ||
AC Output (EPS) | ||||||||
| Max. Output Power(kW) | Peak Output Power, Time(kVA,s) | Rated Voltage(V) | THDv(@Rated Power) | Switch Time(ms) | ||||
| 33 | 45, 7s | 120/208 | <3% | <10 | ||||
Battery Pack and PCS Configuration: The system utilizes a 360kWh total capacity lithium-ion battery pack combined with a 30kW PCS (Power Conversion System) to ensure efficient energy storage and conversion. Intelligent EMS Integration: The integrated EMS (Energy Management System) optimizes energy scheduling and achieves intelligent switching between PV, battery and diesel generator.
Battery Thermal Management: The battery pack is equipped with a dedicated air conditioning system and a reasonable air duct design to effectively dissipate heat and ensure that the battery operates at a suitable temperature, prolonging the battery s life and improving the stability of the system.
Smoke Detection: The system has a built-in smoke detector, which can respond quickly at the early stage of fire and issue an alarm in time. Aerosol fire extinguisher: Aerosol fire extinguishing device is deployed, which can rapidly release the extinguishing agent and isolate the oxygen in the enclosed space to realize efficient fire extinguishing.
Intelligent Management: Intelligent energy management and remote monitoring platform facilitates farm managers to grasp the system status in real time and optimize operation and maintenance strategies. Fault Alert: Intelligent diagnostic tools simplify troubleshooting, improve system availability, and reduce maintenance costs.
Power continuity: ATS STS ensures continuous and stable power supply under all circumstances. Thermal Management: Accurate thermal management strategy prevents overheating of batteries and improves overall system reliability.
Electricity savings: Self-generation and self-consumption of photovoltaic combined with the energy storage system significantly reduces the farm s electricity bill. Intelligent scheduling: Reduces unnecessary diesel generator operation, saves fuel costs and lowers operating costs.
