Design of Electrical Control System Elevator Based on VVVF

Abstract

This paper describes the structure and the function of the main components of the elevator, and then detailed describes drag principle and control principle for the elevator. AC motor speed control method is selected, then describe and choose the basic principle of AC two-speed, AC voltage regulator control and AC variable voltage variable frequency speed control. Finally, design the elevator project program based on VVVF control system by PLC and inverter.