This project, Electric paralytic chair in the building, is concerning about controlling the speed of 3 phase induction motors by using 2 inverters. Controlling the electric chair to move toward in the desired direction, 8051 micro controller will operate and send the appropriate signal to the inverters, then the inverters will separately control the rotor speed of 3 phase induction motors both the left and right side. The advantage for controlling 2 induction motor separately is convenient for narrow area. In addition, this project is covered about battery characteristic studying that intend to the terminal voltage of battery. To consider the optimize period for charging battery, the charging and discharging experiments was taken at constant current and analyzing the differential battery capacity that be charged and discharge in different current.
By
Supongsa Thanasrivilai
Surasawadee Kunlaboonya
Sermcharti Sinthubadee
Anirut Bunterng
Anat Khosuk
