Distributed Measuring System for Predictive Diagnosis of Uninterruptible Power Supplies in Safety-Critical Applications

Saponara, Sergio

doi:10.3390/en9050327

Cited by 16 publications

(16 citation statements)

References 40 publications

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“…A failure mode and effect analysis (FMEA) approach was presented in [17], for fault diagnosis of energy storage unit, Valve Regulated Lead-Acid batteries, and 3-phase high power transformers, utilized in switching converters and power isolation. The FMEA approach utilizes a distributed measuring nodes network, described in [16], based on electrical (voltage, current, impedance) and thermal degradation analysis and vibration-based mechanical stress diagnosis.…”

Section: Hazard and Risk Analysis Literature Reviewmentioning

confidence: 99%

Risk Assessment of Micro Energy Grid Protection Layers

Koraz

2017

Energies

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Micro energy grids (MEGs) are used extensively to meet the combined electricity, heating, and cooling energy demands for all types of customers. This paper develops a hazard matrix for a MEG and utilizes two advanced risk modeling approaches (fault tree and layer of protection analysis (LOPA)) for MEGs' risk analysis. A number of independent protection layers (IPLs) have been proposed to achieve a resilient MEG, hence increasing its safety integrity level (SIL). IPLs are applied using co-generators and thermal energy storage (TES) techniques to minimize the hazards of system failure, increase efficiency, and minimize greenhouse gas emissions. The proposed modeling and risk assessment approach aims to design a resilient MEG, which can utilize those potentials efficiently. In addition, an energy risk analysis has been applied on each MEGs' physical domains such as electrical, thermal, mechanical and chemical. The concurrent objectives achieve an increased resiliency, reduced emissions, and sustained economy.

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Section: Hazard and Risk Analysis Literature Reviewmentioning

confidence: 99%

Risk Assessment of Micro Energy Grid Protection Layers

Koraz

2017

Energies

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“…The overall experimental laboratory setup for the proposed dynamic charging system of electric vehicles is shown in Figure 18. Future works can conduct predictive diagnosis to achieve continuous power supply from high-frequency inverters to the transmitter pads [33,34]. Mechanisms for protection and safe diagnosis of power system components can also be proposed [35].…”

Section: Design Specifications Valuementioning

confidence: 99%

Dynamic Charging of Electric Vehicle with Negligible Power Transfer Fluctuation

et al. 2017

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High-efficiency inductive power transfer (IPT) with low misalignment effects is a key issue in the dynamic charging of electric vehicle (EV) systems. In this study, an advanced concept of analysis and design of transmitter and receiver coils with a special coil assembly is proposed for the dynamic charging of EVs. In each transmitter coil, large rectangular section is series connected with two zigzag-shaped small rectangular sections. These small sections are back-to-back series connected and located inside the large rectangular section. An adjacent pair of proposed transmitter coils with back-to-back series connection named extended double D (DD)-shaped transmitter is used throughout this paper. The major contribution in the case of the extended DD transmitter is negligible power transfer fluctuation, regardless of any horizontal misalignment of the receiver coil. Justification of the coil design is performed based on its load independent voltage gain and power transfer fluctuation characteristics. Experimental results prove that the power transfer fluctuation with load independent voltage gain is within ±6%, and the efficiency is approximately 93% under horizontal misalignment of receiver coil with an air gap of 140 mm. Finally, a new coil design set with a special arrangement has been proposed to maintain nearly uniform coupling factor and negligible power transfer fluctuation.

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“…Besides, the literature related to faults on micro-grids is almost exclusively devoted to the detection of islanded conditions [27,28]. Predictive diagnosis of a high-power transformer for uninterruptible power supplies is developed in [29,30], which shows possible applications in high-power microgrids. In [31], an intelligent power switching for harsh automotive applications is proposed at the circuital component level against high voltage, parasitics effects and over-current.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Control and Fault Protection Investigation of a Renewable Energy Integration Facility with Solar PVs and a Micro-Turbine

2017

Energies

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Abstract:In this paper, a renewable energy integration facility (REIF) with photovoltaic (PV) distributed generation resources for micro-grid applications is studied. In grid-tied operation, the PV system together with the grid supply the power to the local loads while the surplus energy is fed back to the grid. In stand-alone mode, a gas micro-turbine is operated as a master to establish the common AC bus voltage to which the PV inverters can synchronize The experimental results demonstrate the stable operation of the REIF under various generation and load conditions. The power quality can meet the IEEE Standard 1547. Furthermore, the responses of the REIF under different fault conditions are investigated. Relevant protection mechanisms are then developed, providing insights into the fault protection for the future grid.

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Distributed Measuring System for Predictive Diagnosis of Uninterruptible Power Supplies in Safety-Critical Applications

Cited by 16 publications

References 40 publications

Risk Assessment of Micro Energy Grid Protection Layers

Risk Assessment of Micro Energy Grid Protection Layers

Dynamic Charging of Electric Vehicle with Negligible Power Transfer Fluctuation

Coordinated Control and Fault Protection Investigation of a Renewable Energy Integration Facility with Solar PVs and a Micro-Turbine

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