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Nian-Cheng Zhou, Xiao-Xuan Lou, David Yu, Qiang-Gang Wang and Jia-Jia Wang
Unbalanced voltage will inevitably cause power and DC voltage fluctuations in a three-phase PV system. The deterioration of power quality will do great harm to the PV panels and the loads, so it is necessary to suppress the power fluctuations. This paper...
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Mingchao Xia and Xiaoliang Li
A low carbon, high efficiency and high quality power supply scheme for Distributed Generation (DG) in a micro-grid is presented. A three-phase, four-leg DG grid-interfacing converter based on the improved structure of a Unified Power Quality Condition...
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Srilakshmi Koganti, Krishna Jyothi Koganti and Surender Reddy Salkuti
Nowadays, the integration of renewable energy sources such as solar, wind, etc. into the grid is recommended to reduce losses and meet demands. The application of power electronics devices (PED) to control non-linear, unbalanced loads leads to power qual...
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Guido Carpinelli, Fabio Mottola, Daniela Proto, Angela Russo and Pietro Varilone
This paper deals with the problem of optimal allocation (siting and sizing) of storage resources in unbalanced three-phase low voltage microgrids. The siting and sizing problem is formulated as a mixed, non-linear, constrained optimization problem whose ...
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Nadeem Jelani and Marta Molinas
Constant power loads (CPLs), interfaced through active rectifiers can be used for improving the stability of induction generator (IG)-based wind turbines under balanced grid voltage dips by providing the reactive power. Under asymmetrical grid faults, th...
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Vicente León-Martínez and Joaquín Montañana-Romeu
Operation of doubly fed induction generators subjected to transient unbalanced voltage dips is analyzed in this article to verify the fulfillment of the Spanish grid code. Akagi?s p-q theory is not used for this study, because control of the electronic c...
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Sam Weckx, Reinhilde D'hulst and Johan Driesen
In this paper, a locational marginal pricing algorithm is proposed to control the voltage in unbalanced distribution grids. The increasing amount of photovoltaic (PV) generation installed in the grid may cause the voltage to rise to unacceptable levels d...
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Tine L. Vandoorn, Jeroen D. M. De Kooning, Jan Van de Vyver and Lieven Vandevelde
For islanded microgrids, droop-based control concepts have been developed both in single and three-phase variants. The three-phase controllers often assume a balanced network; hence, unbalance sharing and/or mitigation remains a challenging issue. Theref...
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Mohammed El-Nagar, Khaled Ahmed, Eman Hamdan, Ayman S. Abdel-Khalik, Mostafa S. Hamad and Shehab Ahmed
Proper operation of the grid-tie transformerless converters under unbalanced and distorted conditions entails a precise detection of the frequency and fundamental component of the grid voltage. One of the main problems that could arise during the estimat...
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Kyoung-Pil Kang, Younghoon Cho, Myung-Hyo Ryu and Ju-Won Baek
In three-level neutral-point-clamped (NPC) inverters, the voltage imbalance problem between the upper and lower dc-link capacitors is one of the major concerns. This paper proposed a dc-link capacitor voltage balancing method where a common offset voltag...
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Samar Fatima, Verner Püvi and Matti Lehtonen
The burgeoning photovoltaics? (PVs) penetration in the low voltage distribution networks can cause operational bottlenecks if the PV integration exceeds the threshold known as hosting capacity (HC). There has been no common consensus on defining HC, and ...
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Shukuan Zhang, Yunxiang Nan, Yusen Zhang, Chuan Xiang and Mai The Vu
The propulsion system for underwater vehicles, driven by a counter-rotating permanent magnet synchronous motor (CRPMSM), can enhance the operational stability and efficiency of the vehicle. Due to the influence of complex underwater flows, the load imbal...
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In this paper, an improved smart meter data-based three-stage algorithm to calculate the power/energy losses in three-phase networks with the voltage level below 0.4 kV (low voltage—LV) is presented. In the first stage, the input data regarding the...
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Lesyani Teresa León Viltre,Francisc de Assis dos Santos Neves,Miriam Vilaragut Llanes
Pág. 48 a la 58
El gran desarrollo de la automatización industrial, como resultado de la modernización y el progreso de los equipos con microprocesador y electrónica de potencia, ha hecho que las cargas en la actualidad sean más sensibles a las caídas de tensión de cort...
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Vladimir Sousa Santos,Percy Viego Felipe,Julio Gómez Sarduy,Marcos de Armas Teyra
Pág. 163 - 173
En los sistemas eléctricos de potencia es muy común encontrar problemas de calidad de la energía. La circulación de armónicos de tiempo en las redes de suministro eléctrico industrial junto al desbalance de tensión, afecta considerablemente el funcionami...
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Zhuofan Xu, Jing Yan, Guoqing Sui, Yanze Wu, Meirong Qi, Zilong Zhang, Yingsan Geng and Jianhua Wang
High-voltage circuit breakers (HVCBs) handle the important tasks of controlling and safeguarding electricity networks. In the case of insufficient data samples, improving the accuracy of the traditional HVCB mechanical fault diagnosis method is difficult...
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Piyapath Siratarnsophon, Vinicius C. Cunha, Nicholas G. Barry and Surya Santoso
The capability of routing power from one phase to another, interphase power flow (IPPF) control, has the potential to improve power systems efficiency, stability, and operation. To date, existing works on IPPF control focus on unbalanced compensation usi...
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Hani H. Ahmad, Fadi R. Shahroury and Ibrahim Abuishmais
In this work, a multi-independent-output, multi-string, high-efficiency, boost-converter-based white LED (WLED) driver architecture is proposed. It utilizes a single inductor main switch with a common maximum duty cycle controller (MDCC) in the feedback ...
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Daniela Patricia Bohórquez-Álvarez, Karen Dayanna Niño-Perdomo and Oscar Danilo Montoya
This paper addresses the problem concerning the efficient minimization of power losses in asymmetric distribution grids from the perspective of convex optimization. This research?s main objective is to propose an approximation optimization model to reduc...
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