In order to solve the domestic intelligent electric actuator being low accuracy, poor and simple network communication function, this paper presents the development of small and medium power intelligent electric actuators based on TMS320F2812 DSP chip. This intelligent electric actuator has a few functions including network communication, high precise positioning, configuration, control and display self-checking. This type of actuator has compact structure and high intelligence. The advanced frequency conversion control method of vector magnetic beam is adopted in the process module of the actuator. Overall performance of the electric actuator is close to the international level.

No abstract

Transformer for electric energy conversion of the most basic components in power system, is also one of the most widely used electrical equipment, its operation stability, the quality of power supply and technical and economic indicators will be directly related to the working condition of electrical equipment. Conventional power transformer, although after the development of more than a century, the performance and process have been very mature, as for electric power system, its increase of the power supply reliability and power quality do not have much effect on the improvement. In this paper, a new intelligent multi-functional transformer-power electronic transformer, it not only has the function of traditional power transformer voltage level of power transmission and transformation, electrical isolation and power delivery, but also can improve power supply reliability, improve power quality, the advantages of small size are friendly to environment. First, this paper introduces the working principle of the power electronic transformer, the main topology structure; Then, through the simulation analysis of the advantages compared with traditional transformer power electronic transformer; Finally, the developing trend of power electronic transformer is analyzed and summarized in this paper.