Research And Implementation Of Induction Motor Vector Control System

The paper, firstly, detailed introduced the induction motor’s dynamic mathematical model in stationary coordinate system, two phase stationary coordinate system( ?-? coordinate system) and two phase rotating coordinate system( d-q coordinate system), and finally got a mathematical model which the torque component and field component all contraled by one variable through the rotor flux orientation method, and by compared with DC motor speed control system to desigen an induction motors contral system which has speed close loop, flux close loop and the torque close loop. Meanwhile, this paper also introduced the SVPWM modulation technique’s basic principle and contents of judgement sector and vector word time in detail.Secondly, the paper designed an induction motor contral system based on TMS320F28335, and detailed introduced the decive selection of main circuits, the sampling and work principle of conditioning circuit and debugging method, the work principle of the drive circuit and the communication circuit. The paper also introduced the whole structure of the sofeware of the induction motor contral system and the program flow diagram of FOC algorithm, and gave the implement method of some important formulas of the FOC algorithm.Finally, the paper builded SVPWM and FOC model under the Matlab Simulink environment to prove the feasibility of the principles described in this paper. And did speed acceleration test speed deceleration test, load test, unload test on the induction motor contral system to test the performace of the sysyem. The tests achieved a good result.