Common Components of Photovoltaic Systems, Helping You Master Green Energy Easily!

With the rapid growth of China's new energy industry, photovoltaic (PV) power generation has become increasingly popular among households and businesses. Let's explore the key components of PV systems together and help you embark on your green energy journey!

I. Photovoltaic Module: The Heart of Solar Power Generation

The photovoltaic module, also known as a solar panel, is the core component of a PV system. It typically consists of solar cells, glass, EVA adhesive film, a backsheet, and an aluminum frame. The primary function of the PV module is to convert sunlight into electricity, providing clean and sustainable energy for daily use. Currently, several types of advanced PV modules are available on the market:

Heterojunction Cell (HJT): This type combines the strengths of crystalline silicon cells and thin-film cells, offering high conversion efficiency and relatively simple manufacturing processes. It has gained significant attention in recent years as a highly efficient PV technology.

Perovskite Cell: As an emerging solar cell technology, perovskite cells have a high theoretical conversion efficiency. With continuous technological advancements, their application in large-scale PV systems is being actively explored.

TOPCon Cell: This is an upgraded version of the traditional PERC cell. By adding an ultra-thin tunnel oxide layer and a heavily doped polycrystalline silicon layer, it significantly improves conversion efficiency. TOPCon cells have become one of the key technological routes in the PV industry and are widely used in various projects.

II. Inverter: The Brain of the PV System

The inverter is a crucial component of the PV system, primarily responsible for converting the direct current (DC) generated by the PV module into alternating current (AC) for use by household appliances. In addition, inverters also feature the following functions:

MPPT (Maximum Power Point Tracking) Function Automatically: adjusts the operating state of the PV module to ensure the highest power output even when light conditions change.

Protection Function: Provides protection against overloads, short circuits, overvoltage, and undervoltage, ensuring the safe and stable operation of the system.

III. Support Structure: The Skeleton of the PV System

The support structure is the framework that holds the PV module in place and adjusts its tilt angle. Depending on the installation environment, support structures can be categorized as follows:

Roof Support Structure: Suitable for rooftop PV systems in homes and businesses. Common roof support structures are fixed-angle supports, which securely mount the PV modules on rooftops.

Ground Support Structure: Ideal for large-scale PV power stations. Ground support structures include fixed-angle and adjustable-angle supports. Fixed-angle supports are simpler to install and more cost-effective, while adjustable-angle supports can optimize the tilt angle of the PV module based on terrain and seasonal changes in solar altitude, thereby enhancing power generation efficiency. However, adjustable supports come with a higher cost.

IV. Distribution Box: The Safety Guardian of the PV System

The distribution box is an essential component of the PV system, responsible for the distribution, control, and protection of electrical power. Its main functions include:

Electric Power Distribution: Distributes the electricity generated by the PV system to various appliances.

Control and Protection: Provides protection against overloads, short circuits, and leakage, ensuring safe electricity usage.

Through this overview, we hope you have a deeper understanding of the key components of PV systems. Embrace green energy by starting with PV modules. Let's take action together and contribute to the new energy cause!