Results 21 to 30 of about 1,449 (203)

Discontinuous PWM Techniques of Three-Leg Two-Phase Voltage Source Inverter for Sonar System

IEEE Access, 2020
Pulse width modulation (PWM) methods are important for the detection performance of a sound navigation and ranging (sonar) system because they determine the output noise of the system.
Jaehyuk Choi, Dong-Hun Lee, Hyungsoo Mok
doaj   +1 more source

Carrier-Based Discontinuous PWM Method for Five-Leg Inverter

IEEE Access, 2020
This paper proposes a rotation carrier-based discontinuous pulse width modulation (CB-DPWM) method for the five-leg inverter (FLI). The FLI based on two-level topology consists of 10 switching devices for driving dual motors.
June-Hee Lee, June-Seok Lee, Joon-Hyoung Ryu   +2 more
doaj   +1 more source

A Comprehensive AC Current Ripple Analysis and Performance Enhancement via Discontinuous PWM in Three-Phase Four-Leg Grid-Connected Inverters

Energies, 2020
A complete analysis of the ac output current ripple in four-leg voltage source inverters considering multiple modulation schemes is provided. In detail, current ripple envelopes and peak-to-peak profiles have been determined in the whole fundamental ...
Riccardo Mandrioli, Aleksandr Viatkin, Manel Hammami, Mattia Ricco, Gabriele Grandi   +4 more
doaj   +1 more source

Proposal of Hybrid Discontinuous PWM Technique for Five-Phase Inverters under Open-Phase Fault Operation

Machines, 2023
One of the most common issues in inverters are open-circuit faults (OPF). In this scenario, a proper fault-tolerant technique must be used to improve the motor performance.
Markel Fernandez, Endika Robles, Iker Aretxabaleta, Iñigo Kortabarria, José Luis Martín   +4 more
doaj   +1 more source

Reductive Transformation of ALD TeO₂ into Continuous and Impurity-Free Tellurium Films. [PDF]

Small
Atomic layer deposition forms a conformal TeO2 template that transforms to elemental Te through TeH2 mediated reduction using Te(SiMe3)2 and NH3. The transformation is self‐limiting and yields continuous crystalline Te with oxygen‐free bulk and interface even at ultrathin thicknesses.
Ryu SH, Kim S, Kim T, Jeon J, Park GM, Yoo H, Kim SC, Won SO, Kim JY, Kim SK.   +9 more
europepmc   +2 more sources

A double‐modulation‐wave discontinuous pulse‐width‐modulation for dead‐time‐effect elimination and switching‐loss reduction in two‐level power converters

IET Power Electronics, 2023
High current qualities and high efficiencies are always two important characteristics for power converters. However, it is challenging to achieve the two targets simultaneously. In this paper, the dead‐time‐effect elimination pulse‐width‐modulation (PWM)
Qingzeng Yan, Zanrong Zhou, Mingbo Wu
doaj   +1 more source

A Study on Performance and Characteristic Analysis According to the Operating Point of IPMSM Drive

Energies, 2023
This study presents the characteristics and performance of a motor at the operating point based on pulse-width modulation (PWM). PWM is used in modulating the output voltage of a three-phase inverter.
Hyun-Jong Park, Han-Woong Ahn, Sung-Chul Go   +2 more
doaj   +1 more source

An Improved Modulation Strategy Combining Phase Shifted PWM and Phase Disposition PWM for Cascaded H-Bridge Inverters

Energies, 2017
: Multilevel modulation strategy is an important factor affecting the output performance of multilevel converters. In this paper, the relationship between phase-shifted pulse width modulation (PWM) and phase disposition PWM is analyzed, and then an ...
Muxuan Xiao, Qianming Xu, Honglin Ouyang
doaj   +1 more source

Discontinuous Space Vector PWM Strategy for Three-Phase Three-Level Electric Vehicle Traction Inverter Fed Two-Phase Load

World Electric Vehicle Journal, 2020
Discontinuous pulse width modulation (DPWM) strategies are usually adopted to reduce the switching loss and output current ripple of three-phase three-level traction inverters under three-phase load conditions. However, if there is a short circuit in any
Guozheng Zhang, Yuwei Wan, Zhixin Wang, Le Gao, Zhanqing Zhou, Qiang Geng   +5 more
doaj   +1 more source

Ultrathin Li Metal Anodes: Quantitative Design Principles and Manufacturability Across Liquid and Solid‐State Batteries

Advanced Materials, EarlyView.
Ultrathin lithium metal anodes (≤15 µm) offer a promising route to high‐energy‐density batteries due to their high capacity and low potential. This review presents design principles for ultrathin Li, evaluates fabrication strategies, and discusses challenges in liquid and solid‐state cells.
Cheng Wang, Caoyu Wang, Shuixin Xia, Jodie A. Yuwono, Mingnan Li, Yanqiu Lyu, Ruizhi Zhang, Jun Wang, Jianfeng Mao, Zaiping Guo   +9 more
wiley   +1 more source