Have you seen the solar panels on the roof and want to know what they do and how they do it? Well, those high-tech sparkling glasses are actually just part of a complex network that uses the sun’s renewable energy to power homes. Let’s simply and gradually understand the working principle of solar energy.

How do solar panels generate electricity?

When choosing solar panels, many customers will wonder why the prices of solar panels with the same appearance are very different? Some solar panels only cost 3 yuan/watt, while others cost nearly 20 yuan/watt. What is the reason for such a big gap?

#01 lighter weight

When the RV leaves the factory, the RV manufacturer will have restrictions on the weight in order to meet the national policy. For example, the road weight of the trailer RV cannot be higher than 700kg.

Taklimakan Desert is the largest desert in China and one of the top ten deserts in the world. It is located in Tarim Basin, Xinjiang, with an area of 330000 square kilometers, almost all covered by yellow sand.

As the annual precipitation is less than 100 mm, there are at least more than 300 hot days a year. If we take advantage of the light advantage of Taklimakan Desert and use all the area to build solar power stations, will it be enough for people all over the world?

The capacity of silicon solar panels refers to the power generation of flat panel solar panels. The power value of solar power generation depends on the power H (WH) that can be consumed by the load for 24h. The capacity P (ah) consumed by the load for 24h is determined by the rated power supply of the load and the power consumed by the load for 24h.

Then, considering the influence of average sunshine hours per day and cloudy and rainy days, the working current IP (a) of the solar cell array is calculated.

Solar energy is setting off a future energy revolution, but it also has a big defect: rainy days always darken the light. Although raindrops help to clean up the stains and dust of solar panels, they will also greatly reduce the power generation efficiency, and the power generated is enough to ignore.

Because photovoltaic power generation is a device that uses the radiation of sunlight to convert direct current through photovoltaic modules, and then converts it into alternating current by inverter, and measures the power consumption through a distribution box and two-way electricity meter. In this principle, it all begins with sunlight. Without sunlight, there will be nothing in photovoltaic power generation.

The solar panels used on the RV are generally 100W, and the riders will also install several solar panels. How should they be connected? Is it better to connect in series or in parallel?

First of all, let’s learn a little knowledge. If there are two identical 100W solar panels, how many volts and watts will they become after they are connected in series? How many volts and watts will it become after a parallel connection?

Solar photovoltaic technology has attracted extensive attention recently because of its high-tech nature, global market growth, and easy-to-understand process of converting solar energy into electric energy.

However, in addition to the widely accepted standard solar panels, there are many ways to capture and use solar energy today, all of which help to improve the well-being of our lives and reduce harmful carbon dioxide emissions.

Now, some new designs are completely changing the way photovoltaic is used in buildings. It doesn’t look like typical solar cell modules at all.

The solar street lamp realizes the effect of night lighting by converting solar energy into electric energy and storing it. At night, the solar LED lamp is powered by the battery to bring light to pedestrians and vehicles at night.

An important component to realize this function is the solar street lamp controller. The common solar street lamp controllers are in the form of PWM and MPPT. Today, let’s introduce the advantages and disadvantages of MPPT controllers.

Photovoltaic grid-connected inverter is an essential key component in photovoltaic power generation system. It is mainly used in the special inverter power supply in the field of solar photovoltaic power generation.

The grid-connected inverter converts the AC generated by solar panels into AC that can be directly divided into the power grid through power electronic conversion technology.

Sustainable energy makes the world a better place

Flying over Datong, Shanxi Province, you can see two giant pandas waving to the sky. This is an electric farm composed of thousands of solar panels. This 100-megawatt power farm covers an area of more than 100 hectares.