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Year: 2011, Volume: 11, Number: 3
... normal ECG signal and a arrhythmia base is made up of 48 ECG recordings (half hour rejected one). duration for each one), sampled at a frequency of 360 Hz, Note: all the next results regarding ROBBPT algorithm containing 116.137, normal and pathological beats were obtained using the following parameters: ( ...
Year: 2011, Volume: 11, Number: 3
... as follows. Generally, at most time, several spectrum bands may be Section II, III presents previous research and system model available for CRs over a wide frequency range. Therefore, respectively. In Section IV we propose the cooperative once available spectrum bands are identified through spectrum decision approach. The optimal spectrum handoff spectrum ...
Year: 2011, Volume: 11, Number: 2
... limiting electric presented results on PD in terms of phase angle, PD field for ionization (E l ), the dielectric constant of the solid magnitude and PD frequency [7-9]. dielectric (ε ), the known parameter ε 0, and the inverse of the distance between the electrodes (ƒ‘λ 0) ( ...
Year: 2011, Volume: 11, Number: 2
... of the motor for both speeds. motor represented the best solution for variable speed A comparison between motors with two distinct windings applications. Then, the development of frequency converters and with one winding with switchable number of poles based on transistors and later on other powerful "electronic proves a better utilization of the machine for the ...
Year: 2011, Volume: 11, Number: 2
... E LC RC p ƒ x x E ƒ €2 € € 1 € 2 € x u where € 0. ƒ LC RC LC When the switching frequency is high enough and ripples Substituting (12) into (11) leads to p are small, if we suppose the duty ratio of a switching period ...
Year: 2011, Volume: 11, Number: 2
... the field of high power and current systems with great generate harmonically optimum waves at the output. The reliability such as marine propulsion, railway traction, PWM switching frequency is quantitatively limited, since electrical vehicles, and aerospace applications [1 ], [4 ], [5]. the Space Vector Modulation (SVM ...
Year: 2011, Volume: 11, Number: 2
... Shahed University of Tehran, Iran besmi@shahed.ac.ir 1 Abstract €” This paper presents a new method to calculate [8] for determining SC in a two-winding high frequency stray capacitance between conductor wire filaments. The new transformer for circuit simulation. The approach is useful for proposed method is called vespiary regular hexagonal (VRH) ...
Year: 2011, Volume: 11, Number: 2
... Fig. 7 shows the efficiency of the proposed converter versus output power. TABLE I. PROPOSED CONVERTER SPECIFICATIONS SPECIFICATIONS VALUE Input voltage 48 V Output voltage 150 V frequency 100 kHz PO 150 W Figure 5. The measured waveform of drain-source voltage and current of auxiliary switch S a1 (vertical scale 40V/div or 3A ...
Year: 2011, Volume: 11, Number: 2
... finding could be helpful in fault diagnosis in actual power transformer windings. or in frequency domain. The identification process is normally carried out in frequency domain through inspection ... Power Delivery, vol. 19, pp. 414 €“ 422, 2004. frequency-response analysis," IEEE Trans. Power Delivery, vol. 20, [ ...
Year: 2011, Volume: 11, Number: 2
... the DFOC control system, the following hypotheses have been considered: Because K1 is a constant and then, in case of a slower r ‚ The static frequency converter (CSF) is assumed to parameter variation related to the adaptive law, we get: contain a voltage inverter. r € ki ƒ— ƒ ...
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