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Volume 10 Number 12 Part December Year 2017

15 articles in this issue 

Ming-Wei Li, Jing Geng, Shumei Wang and Wei-Chiang Hong

Hybridizing evolutionary algorithms with a support vector regression (SVR) model to conduct the electric load forecasting has demonstrated the superiorities in forecasting accuracy improvements. The recently proposed bat algorithm (BA), compared with clas... see more

 

Patrizia Beraldi, Antonio Violi, Maria Elena Bruni and Gianluca Carrozzino

The definition of the electric energy procurement plan represents a fundamental problem that any consumer has to deal with. Bilateral contracts, electricity market and self-production are the main supply sources that should be properly combined to satisfy... see more

 

Carme Valero, Mònica Egusquiza, Eduard Egusquiza, Alexandre Presas, David Valentin and Matias Bossio

Due to the increasing share of new renewable energies like wind and solar in the generation of electricity the need for power regulation and energy storage is becoming of paramount importance. One of the systems to store huge amounts of energy is pumped s... see more

 

Yi Wang, Fei Lin, Zhongping Yang and Zhiyuan Liu

In this study, in order to determine the reasonable accuracy of the compensation capacitances satisfying the requirements on the output characteristics for a wireless power transfer (WPT) system, taking the series-series (SS) compensation structure as an ... see more

 

Liying Huang, Dongyuan Qiu, Fan Xie, Yanfeng Chen and Bo Zhang

The stability issue of a single-phase two-stage grid-connected photovoltaic system is complicated due to the nonlinear v-i characteristic of the photovoltaic array as well as the interaction between power converters. Besides, even though linear system the... see more

 

Jianzhong Zhou, Xuanlin Peng, Ruhai Li, Yanhe Xu, Han Liu and Diyi Chen

This paper presents an investigation on the undesirable vibration of an oblique-stud stator frame in a large hydropower generator by means of experimental and finite element (FE) analysis. First, field experimental tests were performed, and the results in... see more

 

Rujian Fu, Xuan Zhou, Hengbin Fan, Douglas Blaisdell, Ajay Jagadale, Xi Zhang and Rui Xiong

Researchers are in search of parameters inside Li-ion batteries that can be utilized to control their external behavior. Physics-based electrochemical model could bridge the gap between Li+ transportation and distribution inside battery and battery perfor... see more

 

Ping Zheng, Weinan Wang, Mingqiao Wang, Yong Liu and Zhenxing Fu

The less-rare-earth interior permanent-magnet synchronous machines (LRE-IPMSMs), which have the advantages of high power density, high efficiency, and low cost, are promising candidates for electric vehicles (EVs). In this paper, the equivalent magnetic c... see more

 

Jacek Hunicz, Aymen Tmar and Pawel Krzaczek

The stratification of in-cylinder mixtures appears to be an effective method for managing the combustion process in controlled auto-ignition (CAI) engines. Stratification can be achieved and controlled using various injection strategies such as split fuel... see more

 

Luca Massidda and Marino Marrocu

The balance between production and consumption in a smart grid with high penetration of renewable sources and in the presence of energy storage systems benefits from an accurate load prediction. A general approach to load forecasting is not possible becau... see more

 

Egidijus Kasiulis, Jens Peter Kofoed, Arvydas Povilaitis and Algirdas Radzevicius

Wave power is an abundant source of energy that can be utilized to produce electricity. Therefore, assessments of wave power resources are being carried out worldwide. An overview of the recent assessments is presented in this paper, revealing the global ... see more

 

Peter A. Lang

This paper presents evidence of the disruption of a transition from fossil fuels to nuclear power, and finds the benefits forgone as a consequence are substantial. Learning rates are presented for nuclear power in seven countries, comprising 58% of all po... see more

 

Christos A. Christodoulou, Vasiliki Vita, Georgios Perantzakis, Lambros Ekonomou and George Milushev

The appropriate circuit modeling of metal oxide gapless surge arresters is critical for insulation coordination studies. Metal oxide arresters present a dynamic behavior for fast front surges; namely, their residual voltage is dependent on the peak value,... see more

 

Azharul Karim, M. Masum Billah, M. T. Talukder Newton and M. Mustafizur Rahman

A numerical study of the unsteady mixed convection heat transfer characteristics of an Ag–water nanofluid confined within a square shape lid-driven cavity has been carried out. The Galerkin weighted residual of the finite element method has been employed ... see more