MPPT Photovoltaic Control System Interface Protection

1、 What is MPPT

MPPT is the abbreviation of Maximum Power Point Tracking, and its Chinese name is Maximum power point tracking technology. It is an important control technology in solar panel photovoltaic power generation systems, used to improve the conversion efficiency and output power of solar panels.

In the process of solar panel power generation, the output voltage and current of the solar panel will also change with changes in environmental factors such as solar angle, sunlight intensity, and temperature. The output power of a solar panel depends on the product of output voltage and current. Therefore, when the intensity of sunlight changes, it is necessary to adjust the working state of the solar panel in real-time according to the current working state to maintain the maximum output power.

The MPPT controller achieves precise tracking of the maximum power point of the solar panel by intelligently adjusting the current and voltage of the solar panel. This technology can effectively improve the conversion efficiency of solar panels, with an efficiency increase of 20% -30%. At the same time, it improves the power generation capacity and system operation stability of solar panels, and is widely used in solar panel power generation systems and other new energy power supply systems.

2、 MPPT control system interface

The interface diagram is as follows:

The MPPT controller has multiple different interfaces for users to configure and monitor. The following are common MPPT controller interfaces:

1. Input power interface: used to connect solar panels and controllers, usually DC input, commonly 12V, 24V, 48V, etc

2. Output load interface: used to connect DC loads or battery packs, and output MPPT adjusted electrical energy to the load or battery.

3. LCD display screen: With a menu and graphical interface, it can be used to display information such as power, voltage, current, event logs, system status, etc. It can also be configured and set.

4. RS232/RS485 interface: used for communication with other devices, such as data exchange, centralized monitoring, remote control, etc. between multiple MPPT controllers.

5. Ethernet port: used to connect to a local area network or the internet, enabling remote control, data upload, and other functions.

6. CAN interface: A communication bus based on Controller Area Network, used to communicate with other devices, such as battery packs, inverters, etc. It can integrate multiple devices to form a complete solar power plant system.

7. USB interface: used to connect computers or other USB terminal devices, achieving functions such as data transmission and program updates.

8. R5232 interface: used for communication with other devices, such as data exchange, centralized monitoring, remote control, etc. between multiple MPPT controllers.

3、 Shanghai Leiditech MPPT Control System Interface Static Surge Protection Scheme

12Vpower supply anti surge:SMF15CA,SMAJ15CA,SMBJ15CA,SMCJ15CA,SMDJ15CA。

24Vpower supply anti surge：SD2471D3W，MMF28CA，SMAJ26CA，SMBJ26CA，LM1K24CA低残压 ，SMCJ26CA，SMDJ26CA。

48Vpower supply anti surge：SD48C，MMF58CA，SMAJ58CA，SMBJ54CA，SMCJ58CA，SMDJ58CA，LM1K58CC。

RS485 interface：SM712，3R090-5S

CAN interface：SMC24，SD24C, LDW43T-513T

USB interface：ULC0504P，USRV05-4，SMD1206P075TF

Ethernet interface：SLVU2.8-4，SMD4532-090NF

RS232 interface：SMC12，3R090-5S,SMD1812P050TF

Shanghai Leiditech brand Leiditech can provide various interface electrostatic lightning protection solutions to solve electromagnetic compatibility problems for customers. For more protection solutions, please search for the mini program "EMC Electromagnetic Compatibility Community" on WeChat. Welcome to contact Hu Gong 18016225001