Results 1 to 10 of about 235,797 (113)

Wavelet-Assisted Adaptive EKF Phase Shift Estimation Approach for Motion-Induced Error Compensation [PDF]

open access: yesSensors
Phase-shifting profilometry (PSP) suffers from motion-induced phase-step variations in dynamic scenes. The breakdown of the fixed phase shift assumption results in issues such as ripples, distortions and accuracy decline in PSP systems.
Xin Lai, Qiushuo Yu, Zhenyi Chen
doaj   +2 more sources

Extended Non-Stationary Phase-Shift Migration for Ultrasonic Imaging of Irregular Surface Component

open access: yesIEEE Access, 2021
This paper introduces an extended non-stationary phase-shift migration (ENSPS) method for ultrasound imaging of irregular surface components. This method extends non-stationary phase-shift (NSPS) technology based on the classical B-scan data to full ...
Junjie Chang   +4 more
doaj   +3 more sources

An Adaptive Sliding Mode Control for a Dual Active Bridge Converter With Extended Phase Shift Modulation

open access: yesIEEE Access, 2023
This paper introduces an adaptive super-twisting sliding mode control (ASTSMC) approach for controlling a dual active bridge (DAB) converter with an extended phase shift (EPS) modulation.
Farzaneh Bagheri   +3 more
doaj   +3 more sources

Fast Transient Modulation for a Step Load Change in a Dual-Active-Bridge Converter with Extended-Phase-Shift Control

open access: yesEnergies, 2018
The manipulation of the bidirectional power in a dual-active-bridge converter relies on the adjustment of several phase-shift angles. Improper implementation of those adjustments during the transient process of a step load change may induce transient DC ...
Chuan Sun, Xiaodong Li
doaj   +3 more sources

Open-Circuit Fault Diagnosis of Dual Active Bridge DC-DC Converter With Extended-Phase-Shift Control

open access: yesIEEE Access, 2019
This paper proposes a simple and fast fault diagnosis strategy for bidirectional isolated dual-active-bridge dc-dc converter with the extended-phase-shift control to improve reliability.
Mingkai Zheng   +5 more
doaj   +3 more sources

A New Control Method for a Bi-Directional Phase-Shift-Controlled DC-DC Converter with an Extended Load Range

open access: yesEnergies, 2017
Phase-shifted converters are practically important to provide high conversion efficiencies through soft-switching techniques. However, the limitation on a resonant inductor current in the converters often leads to a non-fulfillment of the requirement of ...
Wenzheng Xu   +4 more
doaj   +3 more sources

Comparison and Validation of Five Modulation Strategies for a Dual Active Bridge Converter

open access: yesEAI Endorsed Transactions on Energy Web, 2023
This paper addresses the comparison and validation of different modulations for an isolated dc-dc dual active bridge converter (DAB), namely, Duty-Cycle Modulation, Single Phase Shift (SPS), Dual Phase Shift (DPS), Extended Phase Shift (EPS) and Triple ...
Sergio Coelho   +5 more
doaj   +1 more source

Research on the black start of DC transformers based on soft converter control

open access: yesZhejiang dianli, 2023
The DC transformers with dual active bridge (DAB) topology is characterized by zero voltage switching (ZVS) and provides the basis for realizing lossless turn-off buffer by directly paralleling buffer capacitors.
TANG Xueteng   +5 more
doaj   +1 more source

Research on Reactive Power Optimization Control of a Series-Resonant Dual-Active-Bridge Converter

open access: yesEnergies, 2022
In order to meet the demands of the bidirectional transmission of electric vehicle charger power, a series-resonant dual-active-bridge (DAB) converter is investigated in this paper.
Junjuan Wu   +3 more
doaj   +1 more source

A Backflow Power Suppression Strategy for Dual Active Bridge Converter Based on Improved Lagrange Method

open access: yesEnergies, 2023
Dual-active bridge (DAB) converters are receiving increasing attention from researchers as a critical part of the power transmission of energy routers. However, the DAB converter generates a large backflow power in conventional control mode, and when the
Xinwen Zhang, Canlong Wang
doaj   +1 more source

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