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Search results for: power
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Year: 2009, Volume: 9, Issue: 1
... in Electrical and Computer Engineering Volume 9, Number 1, 2009 Calculus of the Power Spectral Density of Ultra Wide Band – Pulse Position Modulation Signals Coded with Totally ... of this matrix is that all its non-zero Figure 1. TF system structure. powers are identical: 2 t 1 1 The algorithm for the variable Fn is ...
Year: 2009, Volume: 9, Issue: 1
... PWM technique II. PWM MODULATION STRATEGY USED FOR through the addition of the 17-percent third-harmonic INVERTERS COMMAND component to the original sine reference. Fig.1 shows the three phase power inverters with variable inductance of the output load, and Figure 2 shows the Index Terms — PWM converter, digital control, microcontroller, simulation, harmonic distortion ...
Year: 2009, Volume: 9, Issue: 1
... ) and, therefore, a direct drive is proposed, at low III. PREPARING CLASSICAL MODEL speed and high torque; To start the motor pre-dimensioning, the power of the- accounting for a 2-quadrant drive, to save more energy motor is considered as reference. The power of the motor from battery. may be ...
Year: 2009, Volume: 9, Issue: 1
... in Matlab software for harmonic analysis. The PWM command signals obtained from DSP board The FFT algorithm is applied for these data. FFT control are send to a power inverter realized with an ASIPM transform can only process a sampled waveform where N module PS12017 from Mitsubishi Electric. [7] (number of samples) is ...
Year: 2009, Volume: 9, Issue: 1
... humans. methylmercuric hydroxide (CH3HgOH). Mercury The largest source of the mercury contamination is air compounds, in the aqueous phase remain undiassociated deposition, particularly from power plants burning coal, molecules.[2] incineration of wastes that contain mercury or mercury- Given the present understanding of the mercury cycle, the containing ...
Year: 2008, Volume: 8, Issue: 2
... enables a set of predefined sensor networks challenges such as protocols, real-time data, power to be remotely accessible and controlled for constructive and management, programming abstractions, ... that are currently not connected to the PC and are ledsListenerTimerRx ledsTimerRx LedsObserverMsg() powered by their own batteries. The DelugeBasic [15] ledsListenerTx ledsTx LedsObserverMsg( ...
Year: 2008, Volume: 8, Issue: 2
... , Iran akochaki@aut.ac.ir Abstract — this paper presents a novel method of modeling two phase to ground fault and three phase to ground fault internal faults in a power transformer. The method leads to a rarely happen in a power transformer, the model enables model which is compatible with commercial phasor-based calculation of fault currents in ...
Year: 2008, Volume: 8, Issue: 2
... Microcontroller) which is managing a radio measuring the tilt of an object relative to the vertical interface (RF Transceiver), an A/D Converter, a power direction (based on the direction of the gravitational force of management module (MA) and a rechargeable battery the Earth). The measurement of the object's ...
Year: 2008, Volume: 8, Issue: 2
... quadruple resonance (NQR) is a resonance absorption of electromagnetic energy in crystals, caused by Figure 1. Measuring LC circuit with the combined capacitor. transitions between power levels, appearing as a result of interaction of kernels possessing an electric quadruple Variation of the VC1 capacity is carried out mechanically moment with the electric crystalline field ...
Year: 2009, Volume: 9, Issue: 1
... article is aimed at providing a pertinent density, to access them with a high speed, and to be a low theoretical analysis of the spin polarized current assisted power consumer [7, 8]. Once the performances in these recording, emphasizing its performance with respect to directions become comparable with the ones of the minimum ...
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