Fault tolerant isolation between devices powered by separate power sources

1998 ◽  
Vol 70 (1) ◽  
pp. 151
Author(s):  
F Khosrowpour
Keyword(s):  
Fault Tolerant ◽  
Power Sources

An Efficient Energy Adaptive Clustering LEACH in Wireless Sensor Network

2010 ◽  
Vol 439-440 ◽  
pp. 510-515
Author(s):  
Lian Xing Zhang
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Fault Tolerant ◽  
Wireless Sensor ◽  
Threat Detection ◽  
Critical Systems ◽  
New Paradigm ◽  
Power Sources ◽  
Adaptive Clustering ◽  
Programming Tools

Wireless sensor network (WSN) is an emerging class of systems made possible by cheap hardware, advanced programming tools, complex algorithms, long lasting power sources and energy efficient radio interfaces. Wireless sensor network is a new paradigm in designing fault tolerant mission critical systems, to enable varied applications like threat detection, environmental monitoring, traditional sensing and actuation and much more. The algorithmic approach to WSN differentiates itself from the protocol approach by the fact that the mathematical models used are more abstract, more general, but sometimes less realistic than the models used for protocol design. Experimental results prove that the scheme can get better effect.

Fault-Tolerant Fuel Cell Hybrid Bus Powertrain Integration

2012 ◽  
Vol 6 (2) ◽  
pp. 213-220 ◽  
Author(s):  
Zaimin Zhong ◽  
◽  
Jingzhou Wei ◽  
Xinbo Chen
Keyword(s):  
Fuel Cell ◽  
Cell Hybrid ◽  
Optimization Design ◽  
Fault Tolerant ◽  
Polymer Electrolyte Membrane ◽  
Reference Value ◽  
Parallel Structure ◽  
Power Sources ◽  
Hybrid Bus ◽  
Fuel Cell Hybrid

Focusing on Polymer Electrolyte Membrane (PEM) Fuel Cell hybrid Bus (FCB) powertrain integration, this paper presents a quasi-parallel dual-powertrain topology that can enhance powertrain reliability and extend optimization of energy distribution. This paper analyzes the redundancy of three practical topological structures for a dual-powertrain FCB, including a full-parallel structure, a quasi-serial structure, and a quasi-parallel structure. By calculation and comparison, the reliability of the quasi-parallel dualpowertrain structure and its corresponding fault redundancy is shown to be the highest. This paper also carries out an optimization design of FCB powertrain parameters by analyzing the power index and typical Chinese bus cycle. Furthermore, the innovative method of designing power sources is discussed in this paper. Not only power characteristics but also energy characteristics of batteries are fully taken into consideration in this paper. Off-board and on-board experiments verify the feasibility and redundancy of the quasi-parallel dual-powertrain. This research is of reference value for the study of FCB powertrains.

scholarly journals Fault Tolerant Boost Converter with Multiple Serial Inputs and Output Voltage Regulation for Vehicle-to-Aid Services

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1694 ◽  
Author(s):  
Martín Antonio Rodríguez Licea
Keyword(s):  
Smart Grids ◽  
Emergency Services ◽  
Fault Tolerant ◽  
Voltage Regulation ◽  
Boost Converter ◽  
Numerical Comparison ◽  
Power Sources ◽  
Boost Converters ◽  
Vehicle To Grid ◽  
Component Failures

The operation of electric vehicles (EV) is currently being segmented into a scenario of smart grids, including vehicle-to-grid (V2G), vehicle-to-home (V2H), vehicle-to-building (V2B), and vehicle-to-load (V2L), among others. Energy-providing services from EVs for medical/health assistance (human, animal, agronomist, environmental, etc.), including emergency services (patrols, fire trucks, etc.), are named/classified in this article as vehicle-to-aid (V2A), since it is expected that they will require special characteristics. For instance, an EV for V2A services must supply regulated voltage by a power electronic converter, even during possible failures, including short-circuits and damages on its components. In this paper, a new configuration of boost converter is proposed, with unlimited serial inputs ( n ), and important properties of fault tolerance, even if the power sources are not isolated; this includes robustness against component failures, variations in the parameters and design errors. Analytic, numerical, and experimental results that validate the operation of the proposed configuration against failures and parameter variation are presented. A numerical comparison with series-connected boost converters is also presented, showing best closed loop performance (PI) with n fewer diodes and n fewer capacitors.

REDUCED MODEL OF PLASMA DISCHARGE CONTROL IN TOKAMAK WITH IRON CORE

2020 ◽  
Vol 7 (3) ◽  
pp. 11-22
Author(s):  
VALERY ANDREEV ◽  
◽  
ALEXANDER POPOV
Keyword(s):  
Optimal Control ◽  
Inverse Problem ◽  
Optimal Control Problem ◽  
Control Problem ◽  
Nonlinear Behavior ◽  
Plasma Discharge ◽  
Reduced Model ◽  
Iron Core ◽  
Power Sources ◽  
Real Power

A reduced model has been developed to describe the time evolution of a discharge in an iron core tokamak, taking into account the nonlinear behavior of the ferromagnetic during the discharge. The calculation of the discharge scenario and program regime in the tokamak is formulated as an inverse problem - the optimal control problem. The methods for solving the problem are compared and the analysis of the correctness and stability of the control problem is carried out. A model of “quasi-optimal” control is proposed, which allows one to take into account real power sources. The discharge scenarios are calculated for the T-15 tokamak with an iron core.

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