Operation Mode Analysis of the CLLC Resonant Converter

2019 ◽  
Author(s):  
Konstantin Siebke ◽  
Regine Mallwitz
Keyword(s):  
Operation Mode ◽  
Mode Analysis ◽  
Resonant Converter

Operation Mode Analysis and Peak Gain Approximation of the LLC Resonant Converter

2012 ◽  
Vol 27 (4) ◽  
pp. 1985-1995 ◽  
Author(s):  
Xiang Fang ◽  
Haibing Hu ◽  
Z. John Shen ◽  
Issa Batarseh
Keyword(s):  
Operation Mode ◽  
Mode Analysis ◽  
Resonant Converter ◽  
Llc Resonant Converter ◽  
Peak Gain

Operation Mode Analysis of Joint Heating about Solar Collectors and Ground Source Heat Pump

2013 ◽  
Vol 805-806 ◽  
pp. 52-57
Author(s):  
Yue Ren Wang ◽  
Xiao Zhang ◽  
Yong Qiang Fang
Keyword(s):  
Heat Pump ◽  
Operation Mode ◽  
Mode Analysis ◽  
Ground Source Heat Pump ◽  
Solar Collectors ◽  
System Operation ◽  
Heating Systems ◽  
Operation Efficiency ◽  
Ground Source ◽  
The Impact

From the viewpoint of improving heating quality and saving energy, the paper proposes the use of Joint Heating Systems about Solar Collectors and Ground Source Heat Pump (JHSSCGSHP). The typical architecture in Shenyang is analyzed about dynamic simulation by the use of JHSSCGSHP. MATLAB is used to operate comparative analysis of simulation. It focuses on the impact of water temperature of inlet and outlet of heat pump systems in different series of separate heating of ground source heat pump and JHSSCGSHP. Thus the influence of the system operation efficiency based on different operation modes is compared.

scholarly journals Operation mode analysis of 3-RPS parallel manipulators based on their design parameters

2018 ◽  
Vol 63 ◽  
pp. 122-134 ◽  
Author(s):  
Abhilash Nayak ◽  
Thomas Stigger ◽  
Manfred L. Husty ◽  
Philippe Wenger ◽  
Stéphane Caro
Keyword(s):  
Operation Mode ◽  
Parallel Manipulators ◽  
Mode Analysis ◽  
Design Parameters

scholarly journals Independent Upper- and Lower-Arm Switching Scheme Based on Reference Current Polarity for Three-Level NPC Inverters

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5535
Author(s):  
Kangsoon Ahn ◽  
Yongseung Oh ◽  
Wonseok Oh ◽  
Kyumin Cho
Keyword(s):  
Dead Time ◽  
Operation Mode ◽  
Current Control ◽  
Neutral Point ◽  
Mode Analysis ◽  
Switching Scheme ◽  
Grid Connected Inverter ◽  
Dead Time Compensation ◽  
Current Polarity ◽  
Switching Method

This study presents a novel switching scheme for three-level neutral point clamped (NPC) inverters. The proposed switching method independently drives the upper- and lower-arm elements of the inverter based on the polarity information of the reference current. The proposed switching scheme does not require the inclusion of dead-time for each switching, except when the current polarity changes. Therefore, unlike the conventional inverter switching method, dead-time compensation is not needed, and the possibility of an arm-short accident is prevented. In this study, a switching procedure is detailed, and the operation mode analysis of the proposed switching scheme is presented. The effectiveness of the proposed switching method is verified experimentally by application to a grid-connected inverter that requires inverter current control.

scholarly journals Cryptography Chaos Theory

2018 ◽  
Vol 331 ◽  
pp. 447-458
Author(s):  
Bulai Rodica ◽  
Victor Fanari
Keyword(s):  
Chaos Theory ◽  
Dynamic Systems ◽  
Information Society ◽  
Chaotic Dynamic ◽  
Operation Mode ◽  
Binary Sequence ◽  
Mode Analysis ◽  
Hybrid Techniques ◽  
Encryption Algorithms ◽  
Modern Cryptography

The development of information society, which has led to an impressive increase in the volume of information, mainly economic, circulated in computer networks, accelerated the development and mostly the use of modern cryptography tools. In the last years, researchers have pointed out that there is a possible similarity between chaos and cryptography, many of the properties of chaotic dynamic systems having correlation among the cryptographic systems that are based on computational methods. Studies carried out on chaotic dynamic systems usage in digital crypto-systems have determined the occurrence of similar to classic techniques, but also of some specific techniques and methods that have been analyzed and evaluated. The attempts to develop new encryption ?lgorithms based on chaos theory have evolved gradually from simple solutions, which suppose the iteration of a din?mic system to obtain binary sequence used for text masking, to methods that imply coupled din?mic systems and hybrid techniques that would combine the chaos advantages with classical methods. In this article there are presented 3 encryption algorithms based on chaos theory: RC4, Fractal Encryption and Cellular Automata, implemented in a system of encryption and operation mode analysis for each algorithm separately.

Reconfiguration of a 3-(rR)PS Metamorphic Parallel Mechanism Based on Complete Workspace and Operation Mode Analysis

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Latifah Nurahmi ◽  
Dongming Gan
Keyword(s):  
Parallel Mechanism ◽  
Operation Mode ◽  
Mode Analysis ◽  
Finite Point ◽  
Constraint Equations ◽  
Revolute Joints ◽  
Operation Modes ◽  
Identification Approach ◽  
Moving Platform ◽  
Mode A

Abstract This paper focuses on the reconfiguration of a 3-(rR)PS metamorphic parallel mechanism based on complete workspace and operation mode analysis. The mechanism consists of three (rR)PS legs, and each (rR) joint is composed of two perpendicular revolute joints. One of the (rR) joint axes can be reconfigured continuously, which allows the mechanism to exhibit three distinct configurations. Initially, the constraint equations are derived by using algebraic geometry approach, and the primary decomposition is computed for the three configurations. It reveals that the 3-(rR)PS metamorphic parallel mechanism can exhibit one up to two operation modes among three configurations. When the second axes of the three (rR) joints intersect at a finite point and not coplanar, the 3-(rR)PS metamorphic parallel mechanism has only one operation mode. If the second axes of the three (rR) joints are coplanar, the 3-(rR)PS metamorphic parallel mechanism has two operation modes. It is shown that both operation modes have the same motion type, namely, 1T2R motion. However, to realize the same trajectories in both operation modes, the moving platform will have different orientations. Hence, the orientation workspaces of both operation modes are characterized and the axodes are used to compare the instantaneous motion of the moving platform when passing through the same trajectories. Based on these results, an identification approach is introduced to identify which operation mode a given mechanism pose belongs to and this provides a useful method for trajectory planning.

scholarly journals Classification of a 3-RER Parallel Manipulator Based on the Type and Number of Operation Modes

2020 ◽  
pp. 1-17
Author(s):  
Xianwen Kong
Keyword(s):  
Parallel Manipulator ◽  
Operation Mode ◽  
Mode Analysis ◽  
Type Number ◽  
Systematic Classification ◽  
Operation Modes ◽  
Solid Foundation ◽  
And Control ◽  
The Impact

Abstract The type/number of operation modes of a parallel manipulator (PM) may vary with the link parameters of the PM. This paper presents a systematic classification of a 3-RER PM based on the type/number of operation modes. The 3-RER PM was proposed as a 4-DOF (degree-of-freedom) 3T1R PM in the literature. Using the proposed method, the classification of a PM based on the type/number of operation modes can be carried out in four steps, including formulation of constraint equations of the PM, preliminary classification of the PM using Gröbner Cover, operation mode analysis of all the types of PMs using primary decomposition of ideals, and identification redundant types of PMs. Classification of the 3-RER PM shows that it has 19 types. Besides the two 4-DOF 3T1R operation modes, different types of 3-RER PMs may have up to two more 3-DOF or other types of 4- DOF operation modes. This work is the first systematic study on the impact of link parameters on the operation modes of the 3-RER PM and provide a solid foundation for further research on the design and control of 3-RER PMs and other multi-mode (or reconfigurable) PMs.

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