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Based on the analysis of induction motor dynamic mathematical model and the vector control principle, the construction of the motor control system has been completed. Asynchronous AC induction motor module, the vector controller module, Park transform module, inverter module, module flux, as well as current control, speed-conditioning module have been set up by adopting the idea of modular in Matlab...
Classic SPWM control mainly focused on making the output voltage of inverter transformer as close as possible to the sine wave, did not take into account the output current waveform. The voltage space vector PWM (SVPWM) control, considering the inverter and AC motor as an integral whole, control the inverter in accordance with the circular track of the rotating magnetic field, can work better. In...
Dual-rotor permanent-magnet synchronous motor has two rotors (outer rotor and inner rotor), one of them is the stator in the traditional motor. So it has a wide application range such as in electric vehicles, hydroelectric generator, and wind power and so on. This paper proposes DRPMSM, introduces its principle, structure, mathematical model and gives its simulation model based on MATLAB. The simulation...
The basic principle of space vector pulse width modulation (SVPWM) and a method of building two closed-loops vector control simulation model for permanent magnet synchronous motor (PMSM) are presented in this paper. At the same time, a new non-linear PID controller in speed closed-loop is studied. Simulation results show that it has good dynamic and static performances with no overshoot and small...
At the basis of analysis of the mathematical model of the permanent magnet synchronous motor (PMSM) and the principle of field orientated vector control, a novel method for modeling and simulink of PMSM system based on SVPWM is proposed. In Matlab/simulink, the simulation model of the whole system is built, two control loops are used, which are inner current loop and the outer speed loop. By simulating...
The mathematical model of linear induction motor (LIM) based on slip frequency type vector control system is established. A self-adjusting fuzzy controller (SAFC) is designed as magnetic thrust adjuster of the motor. The speed of the motor is adjusted by control magnetic thrust of the motor. The scheme of the slip frequency type vector control system of the LIM is obtained by observing the magnetic...
In order to measure accurately rotor flux, easily and simply estimate rotor speed for induction motor, this paper proposed a rotor flux observer based on a novel voltage model, and an original sensorless control method based on the phase difference between the stator current vector and the stator voltage vector. A novel voltage model was constructed, and then the rotor flux observer was established...
When driven by a field-oriented controller, also known as vector controller, induction machine behaves like a separately excited DC machine where flux and motion dynamics are controlled independently in order to achieve high performance from the IM drives. In this paper, the authors have investigated the performance of a linear induction motor drive driven by direct field oriented controller using...
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