Title :
An Open-loop Control System of Three-phase AC Motor Based on DSP
Author :
Zhou, Sanqi ; Jiang, DaMing ; Li, Denghua
Author_Institution :
Beijing Jiao Tong Univ., Beijing
Abstract :
The U/f-constant (Voltage/Frequency equals to constants) control strategy of three-phase AC motor was studied. SPWM (Sinusoidal Pulse Wave Modulation) algorithm was employed to design the open-loop speed control system of three-phase AC motor and implement through programming on DSP (Digital Signal Processor), TMS320F2812. The test results showed that the output signal of the control system is characteristic of sine wave with small harmonic wave, the rotor speed agreed well with the theoretical value. The purpose of precise speed control in the system can be achieved in range of 20-70 Hz.
Keywords :
AC motors; open loop systems; velocity control; digital signal processor; open-loop control system; sinusoidal pulse wave modulation; speed control; three-phase AC motor; AC motors; Control systems; Digital modulation; Digital signal processing; Frequency; Modulation coding; Open loop systems; Pulse modulation; Velocity control; Voltage control; DSP; Open-loop system; SPWM; Three-phase AC motor; U/f-constant control strategy;
Conference_Titel :
Networking, Sensing and Control, 2008. ICNSC 2008. IEEE International Conference on
Conference_Location :
Sanya
Print_ISBN :
978-1-4244-1685-1
Electronic_ISBN :
978-1-4244-1686-8
DOI :
10.1109/ICNSC.2008.4525175
