| Abstract |
The work is considered to practical aspects of power converter size minimization for machine tool drives. Electric drive systems, such as coordinate axes servodrives of milling machines, cinematographic equipment camera drives, drives for rotating devices of telescopes, provides operation modes requiring speed reverse with current limitation [1], and as usual, during the braking kinetic energy in such systems is dissipated in braking circuit [1]. There are some process analysis and calculation of electromagnetic loads on power stage elements methods [1-7] which allow to obtain proper values of braking circuit resistance and power filter capacitance. From the other side, capacitance minimization techniques [8-10] don't consider recuperation processes in the drive systems even though it may cause some unwanted overvoltages in the DC link of power semiconductor converter [1-5]. Therefore, these methods aren't always optimal from size and mass minimization point of view. |
