600 results found.
Year: 2014, Volume: 14, Number: 4
... ]. These pulses will exhibit Unfortunately, this method relies heavily on the wide frequency components spread over a large range after a bandwidth perturbation induced by the sharp ... not necessarily from all of them. For detection, Self-similarity, Signal denoising, Time-frequency example the web client data series collected at the network analysis border will preserve ...
Terms matched: 2 - Score: 12 - 1,185k
Year: 2014, Volume: 14, Number: 4
... information bit; involved. N0/2 €“ the noise power spectral density; It should be noted that it is difficult even for the intrinsic W0 €“ the frequency band of the filter at the receiver's performance of the HOM to be specified for large values of entry; BER/ FER, meaning that it depends on ...
Terms matched: 1 - Score: 3 - 684k
Year: 2014, Volume: 14, Number: 4
... of the A.C. drive with the vector-controlled induction motor. Important simulations II. MATHEMATICAL MODEL OF THE INDUCTION MOTOR and experimental measurements have been realized that SUPPLIED BY FREQUENCY CONVERTER confirm the correctness of the proposed speed controller tuned A mathematical model of the induction motor supplied by by the genetic algorithm and the quality speed response of ...
Terms matched: 1 - Score: 58 - 871k
Year: 2014, Volume: 14, Number: 4
... 12] -[ 15]. According to PC, voltages and currents (no matter efficiency are improved by using the ST in place of the whether in frequency or time domain) are expanded in series SGM to construct the deterministic equations and the of orthogonal polynomials, whose coefficients directly corresponding circuit models. As shown ...
Terms matched: 1 - Score: 3 - 1,084k
Year: 2014, Volume: 14, Number: 3
... of a connected in parallel with the capacitor, being PWM (Pulse two speed single phase induction motor drive is presented. The Width Modulation) controlled at supply frequency (Fig. 1). ECC solution and the method with solution with a fixed value capacitor are comparatively analyzed in terms of efficiency and maximum torque availability ...
Terms matched: 1 - Score: 24 - 956k
Year: 2014, Volume: 14, Number: 3
... j1t experience provides quantitative information on the required u 2 € U 2 e j 2 € U 2 e j 2 t (1) relationship of voltage and frequency of the two sources. Consequently, the terminal behavior of the machine is where, U1, U2 are maximum values, respectively: well defined for practical ...
Terms matched: 1 - Score: 37 - 718k
Year: 2014, Volume: 14, Number: 3
... that the transistor power factor and eliminate certain harmonics. In [5 ], an and the diode are replaced by two bidirectional current IGBT chopper with a 5kHz frequency was analyzed by switches. simulation. Reference [6] presents a three-phase AC-AC converter with nine IGBTs and [7] suggests a method for im L ...
Terms matched: 1 - Score: 49 - 832k
Year: 2014, Volume: 14, Number: 3
... provide current calculations of VD1, two operational amplifiers DA1 and DA2, resistors measured results and manage the ADC and other R1-R8, capacitors C1-C3 (filters of high frequency noise) actions of the system. and switch S1 (changing the mode of operation: the 5. Digital LCD display. metering of the UVR or ...
Terms matched: 1 - Score: 3 - 704k
Year: 2014, Volume: 14, Number: 3
... green harmonic (wavelength λ= 527 nm). The voltage supplied to the electrode setup is a high This is achieved in a system with a KDP crystal frequency voltage lightning impulse which is produced by a Marx converter and Wollaston polarizer. KDP crystal converts generator of rated voltage 500 kV and storage energy 2.2 kJ. ...
Terms matched: 1 - Score: 13 - 1,051k
Year: 2014, Volume: 14, Number: 3
... system. Detailed information about dc-dc converter is given in [2]. These dc-dc converters are controlled by the same controller. Converters are operated at 35 kHz frequency. Dc-dc converters control is based on the current and voltage measurements of PV panels which are obtained by hall-effect sensors. Dc-dc converter circuit and designed power boards ...
Terms matched: 1 - Score: 3 - 968k