Results 231 to 240 of about 1,710,161 (298)
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Pulse-width modulation in sigma-delta modulators
Proceedings of 2010 IEEE International Symposium on Circuits and Systems, 2010Time-encoding machines map analog or multi-bit digital signals to a binary stream. The information contained in the input signal is preserved by the high resolution achieved in the time domain. Pulse-Width Modulators (PWMs) rely on a similar operation principle.
Francisco Colodro Ruiz +1 more
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Sliding Mode Pulse Width Modulation
2007 American Control Conference, 2007This paper presents sliding mode pulse width modulation (SMPWM) control methodologies for a current- controlled inverter. Discussion begins with circuit analysis, proper references, and design of sliding surfaces. Based on this formulation, two novel approaches adopt sliding mode concept are proposed to make the system tracking selected references ...
Wenguang Yan, Vadim Utkin, Longya Xu
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Pulse width modulated optical OFDM
2015 IEEE International Conference on Communication Workshop (ICCW), 2015In this paper, the PWM encoding of an optical OFDM transmission is studied and simulated. Traditional optical OFDM schemes make use of linear drivers, but the inherent nonlinear behavior of the optical emitters produce a harmful effect on the demodulated signal.
Victor Guerra +4 more
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Harmonic analysis of pulse-width modulated systems
Automatica, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Stefan Almér, Ulf Jönsson
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Pulse Width Modulation’s Impact
2021PWM technologies have multiple impacts on the power electronics converters. First, the switching losses of power electronics devices will be accumulated together with PWM and impact the converter power losses. Second, pulse voltage will cause ripple on the passive components in the output side.
Dong Jiang +4 more
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Spectrum of a frequency modulated pulse width modulation signal
International Journal of Circuit Theory and Applications, 2013AbstractIn power electronics, the switching elements are controlled by pulse width modulated (PWM) signals making their currents on and off repeatedly. This might cause electromagnetic interference (EMI) problems especially in switched mode power supplies.
KILINÇ, SELÇUK, Cabuk, Gokhan
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2012
Pulse-width modulation (PWM) is the foundation of control in power electronics. Its design affects almost all aspects of converter operation, from steady-state and dynamic control performance to electromagnetic interference (EMI) and thermal design. The basic principle of commonly used PWM methods has been well established and easy to understand.
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Pulse-width modulation (PWM) is the foundation of control in power electronics. Its design affects almost all aspects of converter operation, from steady-state and dynamic control performance to electromagnetic interference (EMI) and thermal design. The basic principle of commonly used PWM methods has been well established and easy to understand.
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Pulse-Width Modulator Simulation
2022 12th International Conference on Advanced Computer Information Technologies (ACIT), 2022Markiyan Nakonechnyi +4 more
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A prefilter equalizer for pulse width modulation
Signal Processing, 2012This article demonstrates the feasibility of pulse-width-modulation (PWM) of discrete time signals in a digital audio amplifier without inducing the nonlinear distortion usually associated with straightforward PWM. This is achieved by prefiltering the signal prior to the PWM mapping in such a manner that the overall result is distortion-free.
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2006
Pulse width modulation is a form of pulse coding where the modulated signal contains a chosen frequency or band of frequencies as the main components plus harmonics of very high order that can be easily filtered. Even though PWM originated in telecommunication systems, it is now very common in power electronic circuits: dc to dc converters, dc to ac ...
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Pulse width modulation is a form of pulse coding where the modulated signal contains a chosen frequency or band of frequencies as the main components plus harmonics of very high order that can be easily filtered. Even though PWM originated in telecommunication systems, it is now very common in power electronic circuits: dc to dc converters, dc to ac ...
openaire +1 more source