Arc Extinguishing Technology For High Voltage Direct Current Relay: Intelligent And Efficient Development Path

Against the background of rising performance requirements for high voltage direct current relay in fields such as new energy vehicles and smart grids, arc extinguishing technology, as the key to ensuring the reliable operation of relays, is facing challenges and opportunities. Although traditional arc extinguishing technologies, such as magnetic blowing arc extinguishing, gas arc extinguishing and vacuum arc extinguishing, meet the current application needs to a certain extent, with the increase of system voltage and current levels and the intensification of the trend of equipment miniaturization, higher requirements are put forward for the accuracy and efficiency of arc extinguishing technology, and the development of intelligent and efficient arc extinguishing technology is imminent. ​
Changes introduced by intelligent control algorithms​
The introduction of intelligent control algorithms has brought revolutionary breakthroughs to arc extinguishing technology for high voltage direct current relays. The algorithm builds a dynamic arc extinguishing strategy adjustment mechanism based on real-time perception of the working state and circuit parameters of the relay. When the relay contacts are disconnected and an arc is generated, various sensors arranged inside the relay, such as current sensors, voltage sensors and temperature sensors, can quickly capture changes in key parameters of the arc. These real-time data are transmitted to the intelligent control system of the relay. The algorithm model pre-set in the system will conduct in-depth analysis and processing of the data to determine the characteristics and development trend of the current arc. ​
Based on the analysis results, the intelligent control algorithm can accurately adjust the working parameters of the arc extinguishing device. Taking the magnetic blowout arc extinguishing device as an example, the algorithm can adjust the current size and direction of the magnetic blowout coil in real time according to the strength and direction of the arc, change the intensity and distribution of the generated magnetic field, so as to more efficiently blow the arc away from the contact and accelerate its extinguishing process. Compared with the traditional fixed parameter arc extinguishing method, the intelligent control algorithm can implement the "arc-based" arc extinguishing strategy according to different working conditions and arc states, significantly improve the arc extinguishing efficiency and accuracy, and minimize the damage of the arc to the contacts. ​
Advantages of intelligent arc extinguishing technology​
The application of intelligent arc extinguishing technology in high voltage direct current relay shows significant advantages in many aspects. From the performance level, it greatly improves the reliability and stability of the relay. By accurately controlling the arc extinguishing process, the probability of faults such as contact erosion and adhesion is effectively reduced, and the service life of the relay is extended. Under the complex working conditions of frequent start-stop of new energy vehicles, the high voltage direct current relay with intelligent arc extinguishing technology can work continuously and stably, ensure the safe switching of the high voltage circuit between the battery and the motor, and improve the safety and reliability of the whole vehicle. ​From the system level, the intelligent arc extinguishing technology has achieved deep integration and coordination with the entire circuit system. It is no longer an isolated arc extinguishing unit, but can interact with other control modules in the circuit for data exchange and information sharing.
Future Development Direction and Challenges ​
Although the high voltage direct current relay arc extinguishing technology has made certain progress in the direction of intelligence and efficiency, it still faces many development directions and challenges in the future. In terms of technology research and development, it is necessary to further optimize the intelligent control algorithm to improve its adaptability and processing ability to complex arc phenomena. With the continuous development of artificial intelligence and machine learning technology, it is possible to explore the application of deep learning algorithms in arc extinguishing technology. Through the learning and training of a large amount of arc data, the algorithm can more accurately predict the arc development trend, take arc extinguishing measures in advance, and achieve more active and intelligent arc extinguishing control. ​At the hardware level, it is necessary to develop sensors and intelligent control chips with better performance to meet the higher requirements of the intelligent arc extinguishing system for data acquisition accuracy and processing speed.