Title :
Research of elevator energy feedback system based on converters using SVPWM
Author :
Liu, Yi-qiu ; Wang, Xiao-Hong ; Tian, Lian-fang
Author_Institution :
Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
PWM rectifiers and inverters can be used in elevator drivers to achieve bidirectional energy flow and thus to save energy. A double-PWM converter is used to develop an elevator energy feedback system. This paper elaborates the mathematical model of the three-phase-voltage-source (VSR) PWM rectifier, the structure of dual-closed-loop control system, the control strategy of the space vector modulation and its realization in the elevator energy feedback system. It also demonstrates the simulation model of the system based on Matlab/Simulink. Finally, parameters in the running experiments are presented showing that the system can stabilize the DC bus voltage while keeping high power-factor either in the rectifier mode or in the inverter mode.
Keywords :
PWM invertors; PWM power convertors; PWM rectifiers; closed loop systems; energy conservation; lifts; load flow; power factor; voltage control; voltage regulators; DC bus voltage stability; Matlab; PWM converter; PWM inverter; SVPWM; Simulink; bidirectional energy flow; closed loop control system; elevator energy feedback system; energy saving; mathematical model; power factor; space vector modulation; voltage source PWM rectifier; Control systems; Elevators; Mathematical model; Pulse width modulation; Rectifiers; Vectors; Voltage control; Elevator energy feedback; PWM rectifier; space vector modulation;
Conference_Titel :
Transportation, Mechanical, and Electrical Engineering (TMEE), 2011 International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4577-1700-0
DOI :
10.1109/TMEE.2011.6199372
