scholarly journals Synthesis and Analysis of Three-Port DC/DC Converters with Two Bidirectional Ports Based on Power Flow Graph Technique

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5751
Author(s):  
Hamzeh Aljarajreh ◽  
Dylan Dah-Chuan Lu ◽  
Yam P. Siwakoti ◽  
Chi K. Tse ◽  
K. W. See
Keyword(s):  
Power Flow ◽  
Analytical Tool ◽  
Flow Graph ◽  
Flow Diagrams

This paper presents a systematic topological study to derive all possible basic and non-isolated three-port converters (TPCs) using power flow diagrams. Unlike most reported TPCs with one bidirectional port, this paper considers up to two bidirectional ports and provides a comprehensive analytical tool. This tool acts as a framework for all power flow combinations, selection, and design. Some viable converter configurations have been identified and selected for further analysis.

Some Issues in the Generation of the Topology of Systems With Constant Power-Flow Input-Output Requirements

1988 ◽  
Author(s):  
D. R. Prabhu ◽  
D. L. Taylor
Keyword(s):  
Power Flow ◽  
Arbitrary System ◽  
Graph Structure ◽  
Functional Requirements ◽  
Constant Power ◽  
Design Problems ◽  
Flow Graph ◽  
Flow Variables ◽  
Assembly Algorithms ◽  
Build Systems

Abstract In this paper, we examine design problems in which requirements consist of constant power-flows with constant effort and flow variables in various domains. The use of an outgrowth of bond graph structure for design is explored. A spanning set of functional primitives is determined which can assemble an arbitrary system meeting the above functional requirements. Some basic theorems are developed regarding generic assembly algorithms to build systems using elements belonging to the chosen set. Maximum and minimum bounds on complexity are determined. An optimal partitioning of specified requirements is obtained to minimize the number of primitives needed. Power-flows through each primitive used is subsequently minimized to obtain a minimal power-flow graph.

Kinematic Analysis of an 8-Speed Bicycle Transmission Hub

2013 ◽  
Vol 479-480 ◽  
pp. 234-238 ◽  
Author(s):  
Yi Chang Wu ◽  
Pei Wun Ren ◽  
Li An Chen
Keyword(s):  
Kinematic Analysis ◽  
Power Flow ◽  
Planetary Gear ◽  
Speed Ratio ◽  
Flow Paths ◽  
Gear Teeth ◽  
Gear Mechanism ◽  
Flow Diagrams ◽  
Internal Gear ◽  
Planetary Gear Mechanism

A transmission hub is a speed changing mechanism which is an important device in the transmission system of bicycles. This paper presents the kinematic analysis of an 8-speed bicycle transmission hub by using the fundamental circuit method. First, a distributed-flow type planetary gear mechanism, which consists of two parallel-connected transmission units and one differential unit, and the corresponding clutch sequence table of an 8-speed transmission hub are introduced. Based on the fundamental circuits, four kinematic equations of the transmission hub are derived. Then, the speed ratio of each speed is formulated, which is a function of gear ratios of external and internal gear pairs. By submitting the numbers of gear teeth into these formulas, the value of speed ratio at each speed can be calculated. Finally, the power-flow diagrams at related speeds are presented to illustrate the power-flow paths of the transmission hub.

scholarly journals Neural networks for power flow: Graph neural solver

2020 ◽  
Vol 189 ◽  
pp. 106547 ◽  
Author(s):  
Balthazar Donon ◽  
Rémy Clément ◽  
Benjamin Donnot ◽  
Antoine Marot ◽  
Isabelle Guyon ◽  
...  
Keyword(s):  
Neural Networks ◽  
Power Flow ◽  
Flow Graph

Power-Flow Path Analysis of an Existing 8-Speed Bicycle Drive Hub

2015 ◽  
Vol 764-765 ◽  
pp. 334-337
Author(s):  
Yi Chang Wu ◽  
Ming Yuan Chen ◽  
Che Wei Chang
Keyword(s):  
Power Flow ◽  
Flow Analysis ◽  
Planetary Gear ◽  
Flow Paths ◽  
Planetary Gear Trains ◽  
In Series ◽  
Gear Mechanism ◽  
Gear Trains ◽  
Flow Diagrams ◽  
Planetary Gear Mechanism

This paper presents kinematic analysis and power-flow analysis of an existing 8-speed bicycle drive hub by using the fundamental circuit method. First, a planetary gear mechanism, which consists of three basic planetary gear trains connected in series, and its clutching sequence table are introduced. Based on the fundamental circuits, six kinematic equations of the drive hub are derived. Then, the power-flow diagrams at related gears are illustrated based on the clutching sequence table, and the power-flow paths of the bicycle drive hub can be identified. The results of this study are beneficial to the development of multi-speed drive hubs for bicycles.

LPCD framework: Analytical tool or psychological model?

2018 ◽  
Vol 41 ◽  
Author(s):  
David Danks
Keyword(s):  
Decision Making ◽  
Analytical Tool ◽  
Mathematical Framework ◽  
Bayesian Decision ◽  
Perceptual Decision Making ◽  
Psychological Model ◽  
Psychological Reality ◽  
Psychological Theories ◽  
Target Article ◽  
Bayesian Decision Making

AbstractThe target article uses a mathematical framework derived from Bayesian decision making to demonstrate suboptimal decision making but then attributes psychological reality to the framework components. Rahnev & Denison's (R&D) positive proposal thus risks ignoring plausible psychological theories that could implement complex perceptual decision making. We must be careful not to slide from success with an analytical tool to the reality of the tool components.

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