High Efficiency 100KW Hybrid Solar System Combined with Solis Inverter for Commercial Energy Storage System Solution

PV Input (DC Side):
Multiple strings of solar panels (typically monocrystalline modules, e.g., 440–740 W each) are connected in series to form arrays. These arrays are fed into the inverter through MPPT (Maximum Power Point Tracking) inputs. Depending on the inverter model, there may be 8–10 MPPT inputs, each supporting 2 strings.

Battery Connection (DC Side):
A high-voltage lithium battery bank (e.g., 307.2V, 314Ah) is connected to the inverter’s battery input terminals. Proper circuit protection (DC MCB/fuse) and BMS (Battery Management System) communication are included. The inverter regulates charging and discharging automatically.

AC Output to Load:
The inverter’s three-phase AC output is connected to the main distribution board or load panel. It supplies power directly to building loads. When solar production exceeds consumption, excess energy charges the battery or is exported to the grid.

Grid Connection (AC Side):
The system connects to the utility grid via a bidirectional meter. The inverter synchronizes with the grid and can import or export power based on demand and system configuration.

EPS / Backup Output (if available):
Some hybrid inverters have a dedicated EPS (Emergency Power Supply) output. This connects to critical loads and remains powered during grid outages, drawing from the battery and PV.

Monitoring and Communication:
The system includes RS485, CAN, and Wi-Fi/GPRS interfaces for connecting to a smart meter, BMS, and cloud-based monitoring platforms.