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Permanent magnet synchronous motors (PMSM) are appropriate for applications with load-independent speeds or synchronous operation with high accuracy under defined speed. In this paper analysis the structure and equations of the PMSM, direct torque control (DTC) and voltage space vector process then study model reference adaptive system (MRAS) estimators. The PI controller uses from estimate speed...
Present work shows the merits of space vector modulation direct torque control(SVM-DTC) over the conventional direct torque control(conventional DTC). SVM-DTC technique is helpful in solving the basic issues of torque ripple and variable swithing frequency present in the conventional DTC. In order to get the reference voltage vector which is necessary for the SVM-DTC, this paper describes a method...
The Direct Torque Control (DTC) with Space Vector Modulation (SVM) and Self-Tuning PI-Type Fuzzy (STPIF) controller is proposed. This controller determines dynamically the load angle between stator and rotor flux vectors and in consequence the electromagnetic torque necessary to supply the motor load. The rule base for STPIF controller is defined in function of the error “e” and the change of the...
The most important part of the direct toque control for five-phase PMSM is to select the appropriate voltage vectors. This paper develops two methods for this. First the PI control method is used to decide the reference voltage vector and second the way for selecting proper voltage vectors to synthesize the reference voltage vector in order to minimize the effection of harmonics current is gived....
To improve the outputting performance of conventional direct torque control (DTC) system for interior permanent magnet synchronous motor (IPMSM), a new synthesizing DTC method was presented in this paper, which adopted fuzzy controller and auto-tuning proportional-integral (PI) compensator to reduce the flux and torque ripples. The improvement of motor performance by proposed schemes was analyzed...
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