The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Performance evaluation of a brushless DC (BLDC) motor with conventional PI and Fuzzy Logic based speed controller is presented in this paper. The BLDC motor with non-sinusoidal (trapezoidal) back-electromotive force has been analyzed with both the speed and current controllers. It is the always preferred to have a drive with faster and smoother speed response and reduced ripples in current and torque...
This paper presents the nonlinear modeling of Switched Reluctance Motor (SRM) using look up tables. The two lookup tables flux-current-angular position (λ- i - θ) and torque-current-angular position (T- i - θ) are formulated. The value of turn-on (θon) and turn-off (θoff) angles of power converter show considerable impact on the performance of SRM drive. The selection of suitable value of θon and...
The role of proportional-integral (PI) controller as a speed controller for a induction Motor (IM) in high performance drive system is still vital although new control techniques such as direct torque control that is more effective -but complex- is available. However, PI controller is slow in adapting to speed changes, load disturbances and parameters variations without continuous tuning of its gains...
The big inertia torque will be produced, and the speed-adjusting system performance will become bad, when the brushless direct current motor (BLDCM) starts, speeds up and down with the greater inertia load. In order to solve this kind of problem, a fuzzy-PI control scheme combined fuzzy logic strategy and traditional PI control method was presented in this paper, and the simulation experiments of...
In the paper, a new approach to direct torque control (DTC) of induction motor drive based on dual-fuzzy space vector modulation (SVM) technology is proposed. In comparison with the conventional direct torque control using space vector modulation technology (SVM-DTC) method, two fuzzy controllers are used to generate the two components of reference voltage vector instead of two PI controllers. With...
To solve the problem that traditional PI controller is affected by the change of motor parameters and thus can't meet the high accuracy requirement, fuzzy PI speed controller is proposed. Current model of permanent magnet synchronous motor is built and motor speed is identified based on model reference adaptive theory. Speed adaptive law is derived according to Popov theory. Fuzzy PI controlled PMSM...
A strategy of fuzzy-PI control of switched reluctance motor drive system is presented. The strategy of fuzzy and PI is combined to realize the speed adjustment. The outer loop input is speed error and speed error derivative, while the outer loop output is torque which enters the inner loop of the direct torque control system to control 60 KW three phase 6/4 pole SRM. For the outer loop, it adopts...
PID controllers are very common in industrial systems applications. Tuning of parameters of the controllers is governed by system nonlinearities and continuous parameter variations. In this paper, a complete and rigorous comparison is made between two tuning algorithms. PI controller was used in a speed control loop through a field oriented Control (FOC) of an induction motor. AC machine was primarily...
Aiming at non-linear model of multivariable induction motor, traditional PI method is hard to achieve satisfactory control purpose. Fuzzy control can carry the real-time control on system without the accurate mathematical model of induction motor. This paper elaborates induction motor vector control system and the basic principle of the fuzzy PI, making use of fuzzy reasoning, automatically adjusting...
This paper presents a fuzzy sliding mode controller used for switched reluctance motor speed regulation. Based on the technique of variable structure control (VSC) with sliding mode, we can construct the controller that possesses the merits of both fuzzy controller and variable structure controller. It is called a "fuzzy sliding mode controller" (FSMC). It provides a simple way to solve...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.