Results 251 to 260 of about 54,904 (305)

Zero-Backflow Power Control Scheme of Dual Bridge Series Resonant DC–DC Converters With High-Accuracy Time Domain Modeling

IEEE transactions on power electronics, 2023
In the fundamental harmonic approximation (FHA) modeling of dual bridge series resonant dc–dc converters (DBSRCs), the approximation error of the FHA model will lead to low accuracy of optimization schemes, which will reduce the efficiency of DBSRCs.
Yaru Deng, Wensheng Song, Shuai Yin, Ming Zhong, Jian Chen, Xiaoyun Feng   +5 more
semanticscholar   +1 more source

A Zero-Backflow-Power EPS Control Scheme With Multiobjective Coupled-Relationship Optimization in DAB-Based Converter

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
Dual-active-bridge (DAB) based dc–dc converter is usually chosen for energy conversion. In this article, there exist many coupled relationships such as the controversy between local minimum current stress and transmission power, which influence ...
Jiachen Tian, Feng Wang, F. Zhuo, Yichen Wang, Haoyu Wang, Yichu Li   +5 more
semanticscholar   +1 more source

Perturbation Observation Method-Based Optimization Seeking Control of Soft-Switching and No Backflow Power for LCL Resonant-Type Dual Active Bridge DC–DC Converters

IEEE transactions on industrial electronics (1982. Print), 2023
LCL-type resonant dual active bridge (LCL-DAB) dc–dc converters feature high gain, high power density, and low reactive current. To further improve the efficiency, based on the dual-phase shift (DPS) modulation method, the operating characteristics are ...
Mingxue Li, Xiaoqiang Li, Dongsheng Yu, Yang Leng, Chongmo Zhang   +4 more
semanticscholar   +1 more source

PSO based universal phase shift modulation scheme for DAB converter to eliminate backflow power in energy storage applications

International journal of circuit theory and applications, 2023
In battery energy storage system (BESS) applications, the life of the battery depends on the quality of the charging/discharging current. However, the dual active bridge (DAB) converter, which interfaces BESS with the DC link, suffers from a backflow ...
T. S. Bheemraj, V. Karthikeyan, K. Sundaramoorthy   +2 more
semanticscholar   +1 more source

Minimum Backflow Power and ZVS Design for Dual-Active-Bridge DC–DC Converters

IEEE transactions on industrial electronics (1982. Print), 2022
Significant improvement in the power efficiency of dual-active-bridge dc–dc converters can be achieved by implementing zero voltage switching (ZVS) which is facilitated by a negative switch current at the switching instant. Such negative current, however,
Fei Xu, Junwei Liu, Zheng Dong
semanticscholar   +1 more source

Analysis and Suppression of Active Power Backflow of Three-Phase Common DC-Bus Cascaded H-Bridge PV Grid-Connected Inverter During LVRT

IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
Featured with the expandable modular structure, three-phase isolated cascaded H-bridge (CHB) inverters are capable of directly connecting to medium voltage power grid without bulky and heavy line-frequency transformer, which has outstanding advantages ...
Tao Zhao, Daolian Chen
semanticscholar   +1 more source

Ureterolymphatic Backflow

Journal of Urology, 1978
A case is reported of apparent radiologic demonstration of a communication between a completely obstructed distal ureter and its draining lymphatics in a patient with invasive bladder tumor involving the ureteral orifice.
G, Engel, J T, Grayhack, H L, Neiman
openaire   +2 more sources

Experimental investigation on a rotating detonation cycle with burned gas backflow

Combustion and Flame, 2021
To analyze a rotating detonation cycle (RDC) with burned gas backflow, simultaneous self-luminous visualization, pressure, and thrust measurements with gaseous ethylene and oxygen were performed.
K. Matsuoka, Masaya Tanaka, T. Noda, A. Kawasaki, J. Kasahara   +4 more
semanticscholar   +1 more source

Active Power Backflow Control Strategy for Cascaded Photovoltaic Solid-State Transformer During Low-Voltage Ride Through

IEEE transactions on industrial electronics (1982. Print), 2021
Different from the conventional photovoltaic (PV) inverters, a three-phase PV solid-state transformer (SST) based on the cascaded H-bridge (CHB) topology can be regarded as consisting of three single-phase CHB inverters in essence. During the low-voltage
Tao Zhao, Daolian Chen
semanticscholar   +1 more source

Neural network backflow for ab initio quantum chemistry

Physical review B
The ground state of second-quantized quantum chemistry Hamiltonians provides access to an important set of chemical properties. Wavefunctions based on ML architectures have shown promise in approximating these ground states in a variety of physical ...
An-Jun Liu, B. K. Clark
semanticscholar   +1 more source