AC permanent magnet type servomotor driving device

摘要

This research is about the driving device of AC permanent magnet servo motor. In addition to rectifying the rectifier of commercial power supply, the existing circuit also needs to form the power generation braking part by additional rectifiers, so there are problems of increasing hardware size and large cost.In order to solve the above problems in this study, a closed-circuit using switch is set between the smoothing capacitor and the frequency conversion input. In case of any abnormality, the circuit between the rectifier and the frequency conversion can be blocked, and a closed-circuit can be formed, thus consuming the energy of the motor In other words, the drive device of AC permanent magnet servo motor which can simplify the hardware structure is installed.