Energy efficiency criteria in uninterruptible power supply selection

Moreno-Munoz, A.; Rosa, Juan José González de la; Flores-Arias, J.M.; Bellido-Outerino, F.J.; Gil-de-Castro, Aurora

doi:10.1016/j.apenergy.2010.08.017

Cited by 26 publications

(8 citation statements)

References 25 publications

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“…Uninterruptible power supply (UPS) systems (either in static or dynamic configurations) could represent valuable options when voltage sags or power interruptions can be particularly expensive [66], as discussed by research on high-tech buildings [138].…”

Section: Use An Uninterruptible Supply Systemmentioning

confidence: 99%

Energy efficiency measures in electric motors systems: A novel classification highlighting specific implications in their adoption

2019

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Highlights:• Electric motors present a considerable potential for energy efficiency in industry • A comprehensive review of energy efficiency measures in motors systems is provided • A new classification of energy efficiency measures in motors systems is proposed • Specific features of energy efficiency measures may affect their adoption • Productivity benefits from adopting energy efficiency measures are highlighted

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Section: Use An Uninterruptible Supply Systemmentioning

confidence: 99%

Energy efficiency measures in electric motors systems: A novel classification highlighting specific implications in their adoption

2019

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“…The aim in this mode is to ensure power quality, ensuring the waveform, amplitude and frequency of the signal applied to the load. Additionally, this mode has must satisfy the energy consumption increases [5].…”

Section: Introductionmentioning

confidence: 99%

A PI-P+Resonant controller design for single phase inverter operating in isolated microgrids

Ortega

Rodríguez

Garcerá³

et al. 2012

2012 IEEE International Symposium on Industrial Electronics

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This paper presents the design and implementation of a resonant controller into a PI-P control configuration (PIP+Resonant controller). The idea PI-P control is avoid that large control signals causing the saturation phenomena in the system. On the other hand, the resonant controller allows providing high gain at the frequency of the harmonics, in order to mitigate these harmonics. Consequently, the combination of the two controllers (PI-P+Resonant controller) turns out to be an adequate solution to reduce total harmonic distortion in the output voltage (THD v ) of a single-phase inverter due to nonlinear loads. The design of this controller is conducted for inverter operation in island mode within the context of microgrids. That is, in this mode, the inverter must supply the load independently. The controller implemented should be able to regulate the output voltage to be supplied to the load while maintaining the waveform, frequency and amplitude of the output signal.

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“…Those effects are less critical in appliances powered by switching mode power supply (SMPS) where the front side power converter filters and smooths most of the voltage level and frequency electrical disturbances within the range of the universal input supply range [6]. However, power abnormalities and waveform distortions cause control, data processing, and diagnostic systems to operate erratically and can lead to faults in microcontrollers and, consequently, operation downtime and process rejections with variable operating costs.…”

Section: Introductionmentioning

confidence: 99%

A Memory-Efficient True-RMS Estimator in a Limited-Resources Hardware

et al. 2019

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More and more human activities are increasingly dependent on the power quality energy they are supplied. In particular, those loads that have an electronic switching mode power supply (SMPS) and microcontrollers or microprocessors are very susceptible to de-energization of the AC line as voltage monitoring takes place on the DC end and may not have enough time to cope with a voltage event involving energy loss. There have been many proposals that analyze power quality or current consumption, even those using limited resources hardware or the classic formulas of discrete root mean square (RMS). In this proposal, an approximation to the problem by means of an RMS value estimator that uses as a base a microcontroller of basic range and low economic cost and algorithms of calculation of very low computational cost that elude complex arithmetic operation to controllers, such as powers or roots, is presented. The results of the experiments to which the proposal was subjected show its ability to provide an estimation of the RMS value of voltage with sufficient precision or an event alarm in less time than the options analyzed. The validation tests and functional comparison of the prototype which were carried out support its viability.

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Energy efficiency criteria in uninterruptible power supply selection

Cited by 26 publications

References 25 publications

Energy efficiency measures in electric motors systems: A novel classification highlighting specific implications in their adoption

Energy efficiency measures in electric motors systems: A novel classification highlighting specific implications in their adoption

A PI-P+Resonant controller design for single phase inverter operating in isolated microgrids

A Memory-Efficient True-RMS Estimator in a Limited-Resources Hardware

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