Research on the cold-storage door control based on frequency conversion technology

Cold-storage door is an important component in cold-storage system. Its performance influences the energy saving and the service life of cold-storage system. Researches showed that there were many problems which were induced by not controlling the door effectively. So if it can control the cold-storage door effectively or not has been a technique index when judging the cold-storage door´s performance. According to this it takes a research on the method of cold-storage door speed control in this paper. It put forward one speed control method based on frequency conversion technology. After tests it shows that the control device using frequency conversion technology can control the speed of cold-storage door effectively. It can completely avoid the common troubles and improve the performance of cold-storage door.