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Various techniques can be used to investigate the performance of mechanical-to-electrical energy conversion. These techniques vary from one to another, owing to their characteristics, complexity, performance, cost, etc. Besides, they are suitable for a wide range of energy sources and applications from very low to very high power levels. In this paper a mathematical model for a 1.65MW Squirrel Cage...
this paper presents an application of a wavelet-based multi-resolution PID controller, for sensorless control of PM synchronous motor (PMSM). The procedure uses high-frequency injection. In this proposed controller, the wavelet package is used to decompose the error signal between actual and command signals into different frequency ranges. Consequently, a better estimation of position and speed is...
This paper concerns with transient stability control which is part of transient stability assessment which needs to be considered so that the power systems remained intact when failures originating from faults occurred in power systems. Conventional UFLS system is designed to retrieve the balance of generation and consumption following disturbances occurrences in the system. In UFLS method, whenever...
This paper presents a fast and accurate method to determine the available transfer capability. The Ralston's method is used to predict the two trajectory points of voltage magnitude, power flow and maximum generator rotor angle difference. Then, the cubic-spline interpolation technique is used to accurately trace the P-V, P-S or P-Δδ curves between two points of trajectory. The P-V, P-S and P-Δδ curves...
This paper presents a fast and accurate method to determine the available transfer capability. The Ralston's method is used to predict the two trajectory points of voltage magnitude, power flow and maximum generator rotor angle difference. Then, the cubic-spline interpolation technique is used to accurately trace the P-V, P-S or P- ?? ?? curves between two points of trajectory. The P-V, P-S and P-??...
Induction Motor (IM) speed control is an area of research that has been in prominence for some time now. In this paper, a nonlinear controller is presented for IM drives. The nonlinear controller is designed based on input-output feedback linearization control technique, combined with sliding mode control (SMC) to obtain a robust, fast and precise control of IM speed. The input-output feedback linearization...
Control of Induction Motor (IM) is well known to be difficult owing to the fact the models of IM are highly nonlinear and time variant. In this paper, to achieve accurate control performance of rotor position control of IM, a new method is proposed by using adaptive inverse control (AIC) technique. In recent years, AIC is a very vivid field because of its advantages. It is quite different from the...
Induction Motors have been used as the workhorse in the industry for a long time due to its easy build, high robustness, and generally satisfactory efficiency. However, they are significantly more difficult to control than DC motors. One of the problems which might cause unsuccessful attempts for designing a proper controller would be the time varying nature of parameters and variables which might...
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