Main technical performance of solar inverter

The solar AC power generation system is composed of solar panels, charge controller, inverter and battery; the solar DC power generation system does not include inverter. The process of converting AC power into DC power is called rectification, the circuit that completes the rectification function is called a rectifier circuit, and the device that implements the rectification process is called a rectifier device or rectifier.

Correspondingly, the process of converting DC power into AC power is called inverter, the circuit that completes the inverter function is called an inverter circuit, and the device that implements the inverter process is called inverter equipment or inverter.

The core of the inverter device is the inverter switch circuit, referred to as the inverter circuit. This circuit completes the inverter function by turning on and off the power electronic switch. The switching of power electronic switching devices requires certain driving pulses, and these pulses may be adjusted by changing a voltage signal.

The circuit that generates and regulates pulses is often called a control circuit or control loop. The basic structure of the inverter device includes, in addition to the above-mentioned inverter circuit and control circuit, a protection circuit, an output circuit, an input circuit, an output circuit, etc.

Solar inverter is a key device that converts DC power generated by solar panels into AC power. Its main technical performance includes the following aspects:

1. Conversion efficiency: The conversion efficiency of a solar inverter is one of the key indicators to measure the performance of the inverter. Generally speaking, the higher the conversion efficiency, the higher the energy utilization rate of the inverter. The conversion efficiency of some of the best solar inverters on the market can reach over 96%.
2. Output power: The output power of the solar inverter needs to match the connected load. The greater the output power, the more equipment the power generated by the inverter will supply.

3. Input voltage range: Solar inverters need to adapt to different solar panel output voltage ranges. Therefore, the input voltage range should be as wide as possible to adapt to input voltage changes under various circumstances.

4. MPPT accuracy: MPPT (Maximum Power Point Tracking) is one of the key technologies of solar inverters. Its function is to track the maximum power point of solar panels, thereby improving the power generation efficiency of the solar system. Therefore, the higher the MPPT accuracy of the solar inverter, the higher the system power generation efficiency.

   5.Output waveform quality: The solar inverter must produce clear and stable AC waves. The quality of the AC waves determines the             stability and use effect of the inverter's output power.

4. Protection function: Solar inverters are usually equipped with multiple protection measures, such as protecting the inverter and load from overvoltage, overcurrent and overtemperature.

In addition to the main components mentioned above, solar inverters may also add some other functions based on specific needs and application scenarios, such as:

1. Support grid-connected energy storage: In order to make solar inverters work better with the grid, some types of inverters can also store excess electrical energy through built-in energy storage systems and use it at night or for lighting. When insufficient, it is injected into the grid for power supply.

2. Can be equipped with a Wi-Fi module: Modern solar inverters can usually be equipped with a Wi-Fi module to facilitate users to monitor usage through cloud devices such as APPs.

3. Intelligent remote monitoring: In addition to Wi-Fi modules, some modern solar inverters can also integrate intelligent monitoring systems to monitor and regulate the inverter through remote technology.
4. Safety protection measures: Since the output of the solar inverter is alternating current, safety protection measures for short circuit, overload, overheating and other issues need to be added to the inverter to ensure the safety of the equipment and users.

In short, different solar inverters have different structures and performance characteristics, mainly depending on their application scenarios and needs. But no matter what kind of solar inverter it is, it is one of the indispensable key equipment in the solar photovoltaic power generation system.

To sum up, the main technical performance of solar inverters include conversion efficiency, output power, input voltage range, MPPT accuracy, output waveform quality and protection functions. These performance indicators not only affect the quality of the inverter itself, but also determine the overall performance and use effect of the solar power generation system.