Design for a three-phase power current transformer based on CAN bus

According to the disadvantages of the recent current transformer in reliability stability and accuracy, which is caused by analog transmission and the shortage of the complex cabling with many nodes in the signal of current transformer, a three-phase power current transformer based on CAN transmission is designed. The design ideas and basic composition of the current transformer is introduced in this paper. The hardware and software design are also presented by the analysis of the measured physical quantities. By test analysis of the current transformer, it shows that the current transformer is designed reasonably, and its precision meet the requirements of control indexes of electric power system and it can be applied in digital monitoring system of other areas.