نتایج جستجو برای: novel droop control ndc

تعداد نتایج: 2047582  

2007
Guo-Ying Zhang Xin Zhang Gui-Sheng Yu

The asymmetric unit of the title complex, [Mn(C(12)H(6)O(4))(H(2)O)](n), contains one Mn(II) ion, one 1,8-naphthalene-dicarboxyl-ate (1,8-NDC) ligand and one water mol-ecule. The Mn(II) ion is six-coordinated within a distorted octa-hedral coordination geometry, in which the equatorial sites are occupied by four carboxyl-ate O atoms from four different 1,8-NDC ligands, while the axial positions...

2010
Robert Holzmann Alain Jousten

Addressing the Legacy Costs in an NDC Reform: Conceptualization, Measurement, Financing The paper provides a framework for the conceptualization, definition and estimation of legacy costs that need to be addressed in a reform that transforms an unfunded defined contribution (NDB) scheme into a notional (or non-financial) defined contribution (NDC) scheme. As the new contribution rate is fixed a...

Journal: :IEEE Transactions on Industry Applications 2019

Journal: :Journal of Applied Research and Technology 2017

2017
Hamed Moazami Goodarzi Mohammad Hosein Kazemi

Microgrids are small scale power systems with local resources for generation; consumption and storage, that can operate connected to the main grid or islanded. For the islanding operation of microgrids, two important tasks are to share the load demand and maintain the voltage and frequency stabilities. In order to achieve this goal, a hierarchical control structure can be employed. This researc...

Journal: :IEICE Transactions 2014
Yohei Nakata Yuta Kimi Shunsuke Okumura Jinwook Jung Takuya Sawada Taku Toshikawa Makoto Nagata Hirofumi Nakano Makoto Yabuuchi Hidehiro Fujiwara Koji Nii Hiroyuki Kawai Hiroshi Kawaguchi Masahiko Yoshimoto

This paper presents a resilient cache memory for dynamic variation tolerance in a 40-nm CMOS. The cache can perform sustained operations under a large-amplitude voltage droop. To realize sustained operation, the resilient cache exploits 7T/14T bit-enhancing SRAM and onchip voltage/temperature monitoring circuit. 7T/14T bit-enhancing SRAM can reconfigure itself dynamically to a reliable bit-enha...

2016
P. M. Rocha Almeida F. J. Soares

This work proposes a novel primary frequency control technique with electric vehicles (EV), the combination of inertial emulation and droop control, for isolated systems. Being EV dispersed along the grids, the impacts of possible delayed actions are assessed. Islanded systems have reduced inertia and so load/generation imbalance situations may lead to large frequency deviations. Therefore, thi...

2015
Zambroni de Souza Marcos Santos Miguel Castilla Jaume Miret Luis García Diogo Marujo

This paper deals with the problem of voltage security in microgrids. In general, voltage security is an issue for power systems, where the lack of reactive power is a concern. For microgrids a complexity is imposed, since frequency and voltage level deviations may take place by the operation of droop-controlled inverters. This paper incorporates the load margin calculation into a microgrid stru...

2011
Ya Ya Kudryk

We demonstrate that the efficiency droop phenomenon in multiple quantum well InGaN/GaN light-emitting diodes (LEDs) may be connected to the current crowding effect. A numerical model of internal quantum efficiency calculation is presented that takes into account nonuniform lateral carrier injection in the active region. Based on this model, we examine the effect of current crowding on the effic...

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