Energy savings from direct-DC in U.S. residential buildings

Vossos, Vagelis; Garbesi, Karina; Hong-xia, Shen

doi:10.1016/j.enbuild.2013.09.009

Cited by 159 publications

(134 citation statements)

References 7 publications

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“…The utilization of DC distribution systems for applications such as high voltage distribution [1,2], data centers [2,3], telecommunications [4], commercial [5,6] and residential buildings [7][8][9], and street lighting [10,11] is ever increasing. Moreover, a variety of novel applications, such as microgrids and device level distribution, have recently been identified [12,13].…”

Section: Introductionmentioning

confidence: 99%

Stability of DC Distribution Systems: An Algebraic Derivation

et al. 2017

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Instability caused by low inertia and constant power loads is a major challenge of DC distribution grids. Previous research uses oversimplified models or does not provide general rules for stability. Therefore, a comprehensive approach to analyze the stability of DC distribution systems is desired. This paper presents a method to algebraically analyze the stability of any DC distribution system through the eigenvalues of its state-space matrices. Furthermore, using this method, requirements are found for the stability of three example systems. Additionally, a sensitivity analysis is performed, which considers the effect of several system parameters on the stability and disputes some overgeneralized conclusions of previous research. Moreover, various simulations are performed to illustrate the dynamic behavior of a stable and an unstable DC distribution system.

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Section: Introductionmentioning

confidence: 99%

Stability of DC Distribution Systems: An Algebraic Derivation

et al. 2017

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“…A study by Berkeley National Laboratories estimated that 33% of energy savings could be achieved when AC appliances are substituted with high-efficiency DC appliances [2]. In a system with DC sources, and DC appliances, energy saving of 47% could be achieved [3]. Therefore, shifting to the DC system can help in providing reliable electricity.…”

Section: Introductionmentioning

confidence: 99%

Design of efficient BLDC motor for DC operated mixer-grinder

Gholase

Fernandes

2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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In residential applications, DC operated appliances along with DC power distribution can provide considerable energy savings compared to the present AC system. In future, most of the domestic AC operated appliances will be replaced by efficient, DC operated appliances. Presently, domestic mixergrinders employ universal motor, which has an efficiency of the order of 70%. This paper proposes a low cost ferrite magnet based BLDC motor as an efficient alternative to universal motor. The buried magnet type rotor design is generally preferred for such high speed application, however, it suffers from high armature reaction and increased core loss. Instead, design with surface mounted ring permanent magnet is found to be most suitable for this application. Effect of rotor overhang is investigated to improve the magnetic loading. The proposed BLDC motor has iron and copper losses of about 5.2%, thus resulting in high efficiency motor.

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“…In recent years, several researchers have focused on saving the energy consumed by buildings [1][2][3][4][5]. However, indoor comfort is also important for office buildings, because it directly relates to the working efficiency, and so strongly influences corporate profit [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, incorporating energy-saving indoor comfort control algorithms, a suitable ASCS can automatically maintain indoor comfort with effective energy utilization. However, most research into energy issues related to buildings focus on the analysis of energy consumption [1][2][3]5], energy-saving strategies [1,2,4] and indoor comfort control methods [8][9][10][11][12][13] and few considered the modeling of an ASCS.…”

Section: Introductionmentioning

confidence: 99%