نتایج جستجو برای: voltage deviation

تعداد نتایج: 178457  

2017
Zimin Jiang Changgang Li Xiaohao Liu Yutian Liu Ruiming Wang

Harmonic adaptability (HA) capability is required for large-scale onshore and offshore wind turbines (WTs) connected to the grid. To ensure that the distortion of the harmonic voltage at the grid access point generated by grid simulator is in accordance with the required value, this paper proposes an on-site HA remote testing method for offshore WTs to eliminate submarine cable effects. The dev...

Journal: :Microelectronics Reliability 2012
Yao Wang Marius Enachescu Sorin Cotofana Liang Fang

Aggressive technology scaling has inevitably led reliability become a key concern for modern ICs. With commonly existing Process, Voltage, and Temperature (PVT) variations inside a chip, lifetime reliability assurance becomes hardly possible without Dynamic Reliability Management (DRM). In order to maintain a chip’s lifetime reliability specification, we propose a novel DRM framework in this pa...

Journal: :Journal of alternative and complementary medicine 2016
Richard Brown

OBJECTIVES The aim of this study was to determine if grounding in the presence of electromagnetic fields (EMFs) encountered in a normal housing environment produces harmful currents in the human body. DESIGN This study had a test-retest design, with duration of 5-15 min per participant. PARTICIPANTS There were 50 participants, of whom 23 were males aged 12-77 years (Mage ± standard deviatio...

2014
MOHAMMAD NAZARI

With recent advances in power electronic technology, High-Voltage Direct Current (HVDC) transmission system has become an alternative for transmitting power especially over long distances. Multi-Terminal HVDC (MTDC) systems are proposed as HVDC systems with more than two terminals. These systems can be geographically wide. While in AC grids, frequency is a global variable, in MTDC systems, DC v...

2014
Jariullah Safi Joel Anstrom Sean Brennan Hosam K. Fathy

This paper presents a new method for estimating the capacity of a lithium ion battery cell in the presence of a reference cell the parameters of which are well characterized in series with it. The method assumes that both cells are cycled using the same current trajectory starting from the same state of charge (e.g. fully charged). Voltage measurements for both cells as well as current measurem...

2017
Isaiah Adebayo Yanxia Sun

The frequent occurrence of voltage instability in a modern power system is alarming and thus, has been of great concern to power system utilities. In this paper, a new performance index based on the power flow solutions for voltage stability assessment of a power system is presented. First, the voltage deviation with respect to reactive power load variation at each load bus is found. Thereafter...

2017
Peter K.C. WONG Akhtar KALAM Robert A Barr

Australia has topped the world in the penetration of residential roof-top solar generation systems. These residential solar generation systems are connected to the Low Voltage (LV) supply network which is not designed for two-way flow of electricity. Localized voltage rises due to excess solar generation feeding energy back into the supply network is commonly experienced. Supply utilities do no...

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