1. Photovoltaic array: This is the core part of the system, consisting of multiple photovoltaic panels. These battery panels are connected together in series or parallel to form an array capable of generating direct current.

2. Inverters: Inverters are a very important component of photovoltaic off grid power generation systems. It can convert the direct current generated by the photovoltaic array into alternating current for connection to the power grid or use by the load.

3. Energy storage equipment: Energy storage equipment is used to store the electricity generated by photovoltaic arrays for use when needed by the power grid or load. Commonly used energy storage devices include batteries, supercapacitors, etc.

4. Control system: The control system is used to control the operation of the entire system, including power control of photovoltaic arrays, control of inverters, and control of energy storage equipment.

5. Protection system: The protection system is used to protect the entire system from the impact of power grid or load faults, including lightning protection, overvoltage protection, overcurrent protection, etc.

6. Measurement system: The measurement system is used to monitor the operating status of the entire system, including monitoring the current, voltage, power factor and other parameters of the photovoltaic array, as well as monitoring the inverter.