Results 261 to 270 of about 43,590 (298)

Pulse width modulated series compensator

IEE Proceedings - Generation, Transmission and Distribution, 2002
In recent years, several power electronics based technologies, such as the thyristor controlled series capacitor and the unified power flow controller, have been introduced to provide active control of power flow through transmission lines. They have been prompted by the need to utilise existing lines up to their thermal limits to feed power to an ...
G. Venkataramanan, B.K. Johnson
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Pulse-Width Modulation

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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Sliding Mode Pulse Width Modulation

2007 American Control Conference, 2007
This 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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Principle of Pulse Width Modulation

2021
In Chap. 1, the basic concept of pulse width modulation has been introduced briefly. In this chapter, the principle of pulse width modulation will be further discussed. Based on fundamental principle, space vector PWM (SVPWM) and carrier-based PWM (CBPWM) will be presented, respectively, together with the relationship between these two approaches. With
Dong Jiang, Zewei Shen, Qiao Li, Jianan Chen, Zicheng Liu   +4 more
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Digital pulse width modulator architectures

2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
This paper presents a survey and classification of architectures for integrated circuit implementation of digital pulse-width modulators (DPWM) targeting digital control of high-frequency switching DC-DC power converters. Previously presented designs are identified as particular cases of the proposed classification.
A. Syed, E. Ahmed, D. Maksimovic, E. Alarcon   +3 more
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Pulse width modulation

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 Regulators

2015
In the present chapter, the results of Chap. 10 are developed for power supply systems with \(PWM\) boost and buck- boost converters . Regime parameters of converter are determined relatively to the maximum permissible load voltage and the control pulse width. Regime change and correspondence between various regime parameters are examined as projective
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Bipolar Multiplexed Pulse Width Modulation

IETE Journal of Education, 2013
AbstractThis paper presents generation and detection of two-channel bipolar multiplexed pulse width modulated signal. The positive half cycles of a polar triangular wave of frequency fc are modulated in amplitude by one message signal and the negative half cycles are modulated in amplitude by another message signal.
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Pulse width modulated optical OFDM

2015 IEEE International Conference on Communication Workshop (ICCW), 2015
In 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.
Guerra, V., Suarez-Rodriguez, C., El-Asmar, O., Rabadan, J., Perez-Jimenez, R.   +4 more
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Pulse-width modulation in sigma-delta modulators

Proceedings of 2010 IEEE International Symposium on Circuits and Systems, 2010
Time-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.
F. Colodro, A. Torralba
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