نتایج جستجو برای: sag

تعداد نتایج: 3059  

Journal: :مهندسی قدرت ایران 0
amin hajizadeh k.n.toosi university of technology tehran,iran masoud aliakbar golkar k.n.toosi university of technology ,iran

this paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. the hybrid dc power sources are connected to grid using power electronic converters include dc-dc converter and grid connected voltage source inverter. the power from hybrid power sources is controlled during voltage sag by designing of control strategy for dc-dc converter....

درودی, عارف , علی پور, جابر , قاسمی نژاد, مرتضی ,

One of the important power quality issues is voltage sag.  The voltage sag can generate many undesirable effects on electrical equipment. The major effect of voltage sag on electrical machine is torque pulsations after and during voltage sag. In this paper, using a simple theoretical analysis called stator flux trajectory method, producing manner of the torque pulsations and the impact of ...

2014
Fan Li-Guo Zhang Yan-Xia

Serious power quality issues and huge economic loss can be caused by voltage sag. It’s helpful for grid corporation to estimate voltage sag loss. Voltage sag and influence of sensitive equipment are analyzed in the paper. An estimation method of voltage sag loss based on blind number theory is proposed, which takes the sag magnitude and duration as its main characteristic parameters. First Eucl...

2011
MUHAMAD MANSOR NASRUDIN ABD. RAHIM

Enhancing compensating capability is essential in a voltage-sag compensator. It involves two main aspects, first, sag detection technique and second, voltage sag compensator. Many detection techniques have been introduced to measure and to detect voltage sag, such as RMSValue Evaluation and Peak-Value Evaluation. Unfortunately, most of the techniques require a delay for sag to be detected then ...

Journal: :DNA and cell biology 2001
M Swaroop M Gosink Y Sun

We have recently cloned and characterized an evolutionarily conserved gene, Sensitive to Apoptosis Gene (SAG), which encodes a redox-sensitive antioxidant protein that protects cells from apoptosis induced by redox agents. The SAG protein was later found to be the second family member of ROC/Rbx/Hrt, a component of the Skp1-cullin-F box protein (SCF) E3 ubiquitin ligase, being required for yeas...

2005
YVONNE CAPDEVILLE

In Paramecium primaurelia surface antigen (SAg) expression can be experimentally controlled by temperature-shift-induced antigenic variation. As only one SAg is usually expressed at the cell surface under stable environmental conditions, we used the temperature-shift-induced change in SAg to follow the newly expressed antigen and the disappearing one, by both immunofluorescence and immunogold e...

2016
Peng Kuang Mingjia Tan Weihua Zhou Qiang Zhang Yi Sun

SAG/RBX2 and RBX1 are two family members of RING components of Cullin-RING ligases (CRLs), required for their enzymatic activity. Previous studies showed that SAG prefers to bind with CUL5, as well as CUL1, whereas RBX1 binds exclusively to CULs1-4. Detailed biochemical difference between SAG and RBX1, and whether SAG mediates cross-talk between CRL5 and CRL1 are previously unknown. Here we rep...

Journal: :Journal of immunology 2001
T Golovkina Y Agafonova D Kazansky A Chervonsky

Among other features, peptides affect MHC class II molecules, causing changes in the binding of bacterial superantigens (b-Sag). Whether peptides can alter binding of viral superantigens (v-Sag) to MHC class II was not known. Here we addressed the question of whether mutations limiting the diversity of peptides bound by the MHC class II molecules influenced the presentation of v-Sag and, subseq...

This paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. The hybrid DC power sources are connected to grid using power electronic converters include DC-DC converter and grid connected voltage source inverter. The power from hybrid power sources is controlled during voltage sag by designing of control strategy for DC-DC converter....

Journal: :journal of chemical and petroleum engineering 2011
eghbal sahraei mohammad amin safarzadeh seyyed alireza tabatabaei nejad

fractional flow analysis confirms the advantages of surfactant alternative gas injection (sag) in enhanced oil recovery, but an adsorption phenomenon that has been affected by several factors, weakens the effectiveness of sag injection. in this study, the effects of sacrificial agent, gas phase, and surfactant concentration on adsorption density on silica mineral were investigated by static and...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید