Streamlining power electronics teaching

Petry, Clóvis Antônio; Moia, Joabel; Pacheco, Fernando S.; Alves, Gustavo R.; Felgueiras, Carlos

doi:10.1109/taee.2014.6900150

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…However, the introduction of electronics carries also disadvantages as traditional linear loads are often transformed in non-linear ones. This has negative impact on the electric grid because increases the Total Harmonic Distortion (THD) and for so, lowers the electric quality of energy [6].…”

Section: Energy Issuementioning

confidence: 99%

Buildings Sustainability: The HVAC Contribution

Felgueiras¹,

Santos²,

Fonseca³

et al. 2015

JOCET

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Abstract-A very important part of the globally produced energy is consumed in buildings, being an important share frequently used in the HVAC systems. These ones are increasing both in performance and in complexity, taking advantage from the use of the recent advances in mechanical and power electronic devices, particularly in the speed variation field. However the improved efficiency only occurs while the HVAC unit is working in the conditions specified by the manufacturer, otherwise the energy consumption raises to values considerably higher than the nominal ones. The adequate maintenance enforces the system to run on its nominal performance and the contrary has undesirable impact both in the performance and in the system expected life time. Therefore, HVAC field maintenance assumes a very important role in the global building sustainability concept.This work presents some results of an incorrect use of HVAC and the associated electric energy overconsumption that can assume values 50% higher than those that occur when the installation is operated according to the adequate maintenance plan.

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Section: Energy Issuementioning

confidence: 99%