The Open Automation and Control Systems Journal

2015, 7 : 1415-1420
Published online 2015 September 30. DOI: 10.2174/1874444301507011415
Publisher ID: TOAUTOCJ-7-1415

Study and Realization of SVPWM Algorithm’s Key Technology

Liu Bingyou and Yang Huicheng
School of College of Electrical Engineering, Anhui Polytechnic University, Wuhu, Anhui, 241000, P.R. China.

ABSTRACT

Control algorithm is the core of AC servo control system. In order to improve the performances of system, on the basis of vector control system and space vector pulse width modulation (SVPWM), inverse matrix and projection of Uout on plane rectangular coordinate system were used to calculate the nonzero vector movement time t1 , t2 . Then, a method for calculating vector switch points Tcm1,Tcm2,Tcm3 was given. Finally, a judgment method for sectors of the vector was given based on the relationship between index number and sectors. Simulations were carried out and results show that the system exhibits better performances.

Keywords:

Key Technology, Nonzero Vector, Sector, SVPWM, Vector Movement Time.