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

fYear

2008

fDate

6-8 April 2008

Firstpage

19

Lastpage

21

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICNSC.2008.4525175

Filename

4525175