Results 71 to 80 of about 688 (209)

A General Pulse Width Modulation Method for Zero-Voltage-Switching Active-clamping Three-phase Power Converters: Edge Aligned Pulse Width Modulation (EA-PWM)

open access: yesIEEE Open Journal of Power Electronics, 2020
A general PWM method for soft-switching three-phase power converters-Edge Aligned PWM (EA-PWM) is proposed. It aligns all the high loss commutation instants of the converter bridges in a switching cycle at the same instant so that all the switches of the
Keyan Shi, Jinyi Deng, Dehong Xu
doaj   +1 more source

Analysis of Efficiency and Noise, Vibration, and Hardness Characteristics of Inverter for Electric Vehicles According to Pulse Width Modulation Technique

open access: yesWorld Electric Vehicle Journal
This study investigates the efficiency and noise, vibration, and harshness (NVH) characteristics of electric vehicle (EV) powertrains based on three key Pulse Width Modulation (PWM) techniques: Space Vector PWM (SVPWM), Discontinuous PWM (DPWM), and ...
Do-Yun Kim
doaj   +1 more source

Discontinuous Pulse Width Modulation In Flux Angle Control Of Induction Motors [PDF]

open access: yesInternational Journal of Research and Technology in Electrical Industry
In this study, flux angle control (FAC) with discontinuous modulation is presented for induction motor drives with the aim of optimizing motor and inverter losses under light load conditions.
Mohammad Reza Mohebbi   +1 more
doaj   +1 more source

A DPWM with High Efficiency and Low CMV for DMC

open access: yes, 2022
This thesis presents a discontinuous pulse width modulation (DPWM) with high efficiency and low common mode voltage (CMV) for direct matrix converter (DMC).
Hu, Cheng-Chin
core  

A Multi-Mode Digital Controller with Windowed ADC and Self-Calibrated DPWM for Slew-Enhanced Switching Converter

open access: yes, 2012
[[abstract]]Windowed ADC is an attractive solution for the high efficiency digitally-controlled converters. However its limited conversion range restricts the transient speed for the dynamic voltage scaling applications.
P.-H. Lan;C.-Y. Tseng;F.-C. Yeh;P.-C. Huang
core   +1 more source

Spatial distribution of cerebral microbleeds and FLAIR hyperintensities on follow-up MRI after radiotherapy for lower grade glioma. [PDF]

open access: yesRes Diagn Interv Imaging, 2023
Kłos J   +8 more
europepmc   +1 more source

Simulation and implementation of DPWM algorithm for NPC three-level inverter

open access: yesJournal of Physics: Conference Series, 2019
Abstract The application of discontinuous pulse width modulation (DPWM) in high-power inverters can effectively improve the equivalent switching frequency of the inverter and improve the control performance of the system. In this paper, the DPWM3 algorithm of NPC type three-level inverter is researched in detail from the judgment of the ...
Xia Hang, Zhang Jie
openaire   +1 more source

Sigma-delta DPWM controllers for 12MHz DC-DC switch-mode power supplies

open access: yes, 2006
The aim of this work is to develop a power efficient digital controller for DC-DC Switch-Mode Power Supplies (SMPS) operating at switching frequencies up to 12MHz.
Lukic, Zdravko
core  

An Overall Minimized Switching Loss Discontinuous PWM Strategy for Neutral Point Clamped Three Level Inverters

open access: yesIEEE Access, 2019
Aim at reducing switching loss (SL) of neutral-point clamped three-level inverter (NPC TLI) as much as possible, a novel SL minimized discontinuous pulse width modulation (SLMDPWM) strategy is proposed in this paper.
Weidong Jiang   +4 more
doaj   +1 more source

An Improved High-Resolution DPWM Control Circuit Based on FPGA

open access: yesDEStech Transactions on Engineering and Technology Research, 2017
Digital pulse width modulation (DPWM) has advantages of strong anti-interference ability, high efficiency and good flexibility, therefore it has been widely used in switching power supply, communications, power control and transform and other fields. This paper proposed a high resolution DPWM control circuit based on field programmable gate array (FPGA)
Shan-shan HU, Hong-tao LI, Ze-shi YUAN
openaire   +2 more sources

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