Results 211 to 220 of about 1,873 (236)

POWER SPECTRAL DENSITY OF DUAL RANDOMIZED DISCONTINUOUS PULSE WIDTH MODULATION

REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE, 2023
This paper addresses the spectral characteristics of a carrier-based dual randomized discontinuous pulse width modulation (DRDPWM) technique for reducing conducted EMI and switching losses in three-phase voltage source inverters. It combines two simple random schemes, random carrier frequency modulation (RCF-DPWM) and random pulse position modulation ...
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An adaptive Discontinuous Pulse Width Modulation (DPWM) method for three phase inverter

2017 IEEE Applied Power Electronics Conference and Exposition (APEC), 2017
This paper presents an adaptive Discontinuous Pulse Width Modulation (DPWM) method for three phase inverter. A common-mode (CM) signal is injected in the modulation wave to realize the DPWM and the waveform of the injected CM signal is modulated according to the modulation index of the inverter.
Fangcheng Liu, Kai Xin, Yunfeng Liu
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A study of inverter loss reduction using discontinuous pulse width modulation techniques

3rd IET International Conference on Power Electronics, Machines and Drives (PEMD 2006), 2006
In this paper, the reduction in inverter losses by using various forms of Discontinuous Pulse Width Modulation (DPWM) scheme is investigated. Models for various forms of DPWM excitation have been implemented using Pspice and these have been combined with an existing model for a three-phase voltage source inverter.
Y. Wu, C.Y. Leong, R.A. McMahon
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Performance Analysis of Discontinuous Pulse Width Modulation Schemes on PUC-5 Inverter

2018 2nd IEEE International Conference on Power Electronics, Intelligent Control and Energy Systems (ICPEICES), 2018
Considerable research is being carried out on the effect of the choice of PWM scheme on inverter performance. Discontinuous PWM schemes, initially developed by “Depenbrock” in 1977, has become one of the most promising modern PWM methods. This modulation scheme is also known as “Depenbrock PWM” scheme. In this paper the discontinuous modulation schemes
Abdul Azeem, Mohd Tariq, Kaif Ahmed Lodi, C. Bharatiraja   +3 more
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Output Voltage Sampling Circuit for Discontinuous Conduction Mode Flyback Pulse-Width Modulation Controller

Journal of Circuits, Systems and Computers, 2016
Primary-side controlled pulse-width modulation (PWM) flyback converter has been widely used in low-power and low-voltage products for its simple structure and low cost. This paper presents a novel output voltage sampling circuit which considers the influence of the rectifier diode current on the output voltage sampling.
Ling-feng Shi, Zhen-Bo Shi, Sen Chen, Jian-Hui Xun   +3 more
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Application of pulse-width modulated pre-emphasis in closely-spaced transmission lines with additional discontinuities

2011 IEEE EUROCON - International Conference on Computer as a Tool, 2011
Transmitter pre-emphasis techniques to overcome high-slope losses of printed circuit board (PCB) with closely-spaced copper interconnect are presented. The pre-emphasis technique based on pulse-width modulation (PWM) using a timing resolution instead of an amplitude resolution to adjust the filter transfer function is presented.
Bretislav Sevcik, Lubomír Brancík
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Integrated Nine-Switch Power Converter Based on Discontinuous Pulse-Width Modulation

Applied Mechanics and Materials, 2012
This paper evaluates the shortcomings of the application experience before nine-switch the newly proposed converter. A better understanding of development, the conclusion is, nine-switch converter is not an attractive option "alternative of two consecutive converter parallel of the bridge.
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Loss Comparison and Thermal Performance of Modular Multilevel Converters under Discontinuous Pulse Width Modulation

2019 9th International Conference on Power and Energy Systems (ICPES), 2019
Discontinuous modulation of the modular multilevel converter can be used for reduction of submodule capacitor voltages and switching losses by clamping one of the arms to its corresponding dc-rail. In this paper, the impact of discontinuous modulation in the losses as well as the expected thermal performance of the devices in the submodules of the ...
Georgios Konstantinou, Harith R. Wickramasinghe, Xinhan Zhang   +2 more
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Discontinuous pulse width modulation methods with neutral point voltage balancing for three phase Vienna rectifiers

2015 IEEE Energy Conversion Congress and Exposition (ECCE), 2015
This paper presents two discontinuous pulse width modulation (DPWM) methods for three phase Vienna rectifiers with different performance optimization targets. One for switching loss minimization and one for switching loss reduction with the neutral point voltage controllability.
Xuning Zhang, Qiong Wang, Rolando Burgos, Dushan Boroyevich   +3 more
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Study of Adjustable Discontinuous Pulse Width Modulation (ADPWM) Based on Switching Transient Inverter Loss Algorithm

SAE Technical Paper Series, 2019
<div class="section abstract"><div class="htmlview paragraph">In order to improve the electric vehicle endurance mileage and output characteristics of motor, the optimization of inverter loss and motor current ripple reduction are considered.
XiaoChuan Xu, Jin Wang, Dongkai Zheng, Jian Zhang   +3 more
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