Energy and power quality measurement for electrical distribution in AC and DC microgrid buildings

Gerber, Dániel; Ghatpande, Omkar; Nazir, Moazzam; Heredia, Willy Bernal; Feng, Wei; Brown, Richard E.

doi:10.1016/j.apenergy.2021.118308

Cited by 27 publications

(5 citation statements)

References 31 publications

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“…The APF works like a current harmonic source and injects similar amplitude current harmonics and the opposite phase into the distribution network. In this method, the line current is measured to determine the current harmonic to be injected [21].…”

Section: Flow Control Methods For An Apfmentioning

confidence: 99%

A new innovative current controller for selective harmonic compensation using active power filters in a microgrid with renewable energy source

Firoozian

Hosseinian

Abedi

2022

IJPEDS

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<span lang="EN-US">In this paper, a novel current controller for selective compensation with active power filter (APF) in a microgrid (MG) is proposed. Power generation with sinusoidal voltage and high quality is essential in the microgrid. Hence, a current control-based method for shunt active power filters aiming to compensate the selective harmonic is proposed. Also, voltage source converter is used in the APF to improve MG power quality. Using the suggested control method can reduce total harmonic distortion (THD). The obtained results from the MATLAB simulations proved the superior of our method than other methods to decrease the current harmonic in a microgrid to an admissible area. Additionally, the practical results obtained from the implementation of the proposed control approach on an actual microgrid confirm the efficacy of the proposed method.</span>

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Section: Flow Control Methods For An Apfmentioning

confidence: 99%

A new innovative current controller for selective harmonic compensation using active power filters in a microgrid with renewable energy source

Firoozian

Hosseinian

Abedi

2022

IJPEDS

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“…This approach yields EUC-specific estimates of percent energy savings achievable by the use of DC distribution. However, this analysis does not address power quality and the effects on harmonics on the overall system efficiency, which are addressed in [45,46]. Table 4 shows the efficiency savings from DC distribution for each EUC and system configuration, averaged over all climate zones and building types.…”

Section: Energy Savings By End-use Categorymentioning

confidence: 99%

Adoption Pathways for DC Power Distribution in Buildings

et al. 2022

Self Cite

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Driven by the proliferation of DC energy sources and DC end-use devices (e.g., photovoltaics, battery storage, solid-state lighting, and consumer electronics), DC power distribution in buildings has recently emerged as a path to improved efficiency, resilience, and cost savings in the transitioning building sector. Despite these important benefits, there are several technological and market barriers impeding the development of DC distribution, which have kept this technology at the demonstration phase. This paper identifies specific end-use cases for which DC distribution in buildings is viable today. We evaluate their technology and market readiness, as well as their efficiency, cost, and resiliency benefits while addressing implementation barriers. The paper starts with a technology review, followed by a comprehensive market assessment, in which we analyze DC distribution field deployments and their end-use characteristics. We also conduct a survey of DC power and building professionals through on-site visits and phone interviews and summarize lessons learned and recommendations. In addition, the paper includes a novel efficiency analysis, in which we quantify energy savings from DC distribution for different end-use categories. Based on our findings, we present specific adoption pathways for DC in buildings that can be implemented today, and for each pathway we identify challenges and offer recommendations for the research and building community.

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“…3 DC microgrids present prominent advantages in comparison with their ac and hybrid counterparts, considering the higher efficiency owing to the reduced number of conversion stages, better integration of energy storage devices, and no need for grid synchronization. 4 In this new scenario, non-isolated and isolated dc-dc converters are of paramount importance for interconnecting distinct loads and sources through a common dc link. 5 It is also worth mentioning that dc-dc converter topologies with a bidirectional power flow capability are a mandatory requirement for the implementation of efficient energy management strategies as discussed in Dhaked et al 6 Another important practical aspect related to such power electronic converters is power density, which increases as the switching frequency also does.…”

Section: Introductionmentioning

confidence: 99%

“…DC microgrids present prominent advantages in comparison with their ac and hybrid counterparts, considering the higher efficiency owing to the reduced number of conversion stages, better integration of energy storage devices, and no need for grid synchronization 4 . In this new scenario, non‐isolated and isolated dc‐dc converters are of paramount importance for interconnecting distinct loads and sources through a common dc link 5 .…”

Section: Introductionmentioning

confidence: 99%

Three‐phase bidirectional isolated LLC resonant DC‐DC converter for DC microgrid applications

Santos

Henn

Oliveira

et al. 2023

Circuit Theory & Apps

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SummaryDC microgrids rely strongly on bidirectional dc‐dc converters responsible for managing the power flow among distinct loads and renewable energy sources like fuel cells and batteries. In this context, this work presents a three‐phase inductor‐inductor‐capacitor (LLC) resonant dc‐dc converter with high‐frequency isolation and bidirectional power flow capability, employing phase‐shift control and frequency modulation. The resonant tank takes advantage of using the leakage inductance and the magnetizing inductance of the high‐frequency transformer (HFT), which allows for improving power density. The active switches operate with a fixed duty ratio of 50% so that the converter can always achieve zero‐voltage switching (ZVS). The mathematical analysis is carried out based on a single‐phase representation of the converter, which considers only the fundamental components. A dynamic model is derived using the gyrator theory, which allows representing the converter as a frequency‐controlled current source to regulate the output voltage. In addition, the power flow direction is determined from the estimation of an ideal phase‐shift angle for each frequency aiming to control the output power. An experimental prototype is implemented and thoroughly assessed to demonstrate that the introduced topology is feasible for dc microgrids and other applications that require bidirectional power flow.

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Energy and power quality measurement for electrical distribution in AC and DC microgrid buildings

Cited by 27 publications

References 31 publications

A new innovative current controller for selective harmonic compensation using active power filters in a microgrid with renewable energy source

A new innovative current controller for selective harmonic compensation using active power filters in a microgrid with renewable energy source

Adoption Pathways for DC Power Distribution in Buildings

Three‐phase bidirectional isolated LLC resonant DC‐DC converter for DC microgrid applications

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