((Free Energy)) Genetic Pi Controller For A Permanent Magnet Synchronous Motor.pdf

International XII. Turkish Symposium on Artificial Intelligence and works – TAINN 2003 1


IC PI CONTROLLER FOR A PERMANENT
SYNCHRONOUS MOTOR

Cetin ELMAS M. Ali AKCAYOL
******@ ******@
Gazi University, Gazi University,
Technical Education Faculty Faculty of Engineering and architecting
Department of Electrical Education, Department of Industrial Engineering,
Ankara, TURKEY Ankara, TURKEY

ABSTRACT: Permanent synchronous motors (PMSM’s) is often used in
electrical drives because of their simple structures, ease of maintenance and high
efficiency. However, PMSM drive systems have a nonlinear characteristic arised from
motor dynamics and load characteristics. To e with this problem, a ic PI
speed controller for the drive system is proposed in this paper. Firstly, a mathematical
model of a PMSM fed by three phase PWM inverter is developed. Then, the ic PI
is designed and adapted to the drive system. Besides, to illustrate performance of
proposed controller, a conventional proportional integral (conventional PI) controller is
used to speed control of PMSM. Simulation is realized by proposed control strategies
and simulation results are represented.
As an intelligent control technology the GA can give robust adaptive response of a drive
with nonlinearity, parameter variation and load disturbance effect. In this paper, the
ic PI speed controller was applied to the speed loop by replacing the conventional
PI speed controller. The ic PI controller software was implemented using C++
Builder on a PC. Both the conventional and ic PI controller for the PMSM is
implemented by using a TMS320F240 digital signal processor. The ic PI
controller has superiority over conventional PI control. In addition, the results show that
the ic PI controller is also less sensitive to the parameter variations and
disturbances.
I. INTRODUCTION
Permanent synchronous motors are of great interest especiall