Results 151 to 160 of about 5,286,213 (199)
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2014
Modules at last! In most books on a similar subject modules appear on the very first pages. And there are good reasons for this. Ring theory and module theory are symbiotic. Many questions about rings can be handled most effectively by using modules. Moreover, sometimes modules seem to be inevitable.
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Modules at last! In most books on a similar subject modules appear on the very first pages. And there are good reasons for this. Ring theory and module theory are symbiotic. Many questions about rings can be handled most effectively by using modules. Moreover, sometimes modules seem to be inevitable.
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Space-Vector Modulated Multilevel Matrix Converter
IEEE Transactions on Industrial Electronics, 2010A matrix converter is an ac-ac power converter topology that has received extensive research attention as an alternative to traditional ac-dc-ac converter. A matrix converter is able to convert energy from an ac source to an ac load without the need of a bulky and limited-lifetime energy-storage elements.
Meng Yeong Lee +2 more
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ON MODULATED TOPOLOGICAL VECTOR SPACES AND APPLICATIONS
Bulletin of the Australian Mathematical Society, 2019We introduce a notion of modulated topological vector spaces, that generalises, among others, Banach and modular function spaces. As applications, we prove some results which extend Kirk’s and Browder’s fixed point theorems. The theory of modulated topological vector spaces provides a very minimalist framework, where powerful fixed point theorems are ...
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Duality, Vector Spaces and Absolutely Convex Modules
Applied Categorical Structures, 2006An interpretation of absolutely convex modules subject to a separatedness condition as the numerical counterpart of vector spaces is given. It is shown that the full reflective embedding \({\mathcal V}ec \to {\mathcal{AC}}\) is at the same time coreflective, too.
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Space-time vector delta-sigma modulation
2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353), 2003Classical delta-sigma modulation gains resolution through temporal oversampling by using a high-speed, low-resolution quantizer and shaping the resulting quantization errors out of the signal band. Likewise, spatial delta-sigma modulation is often used in image halftoning to create high-visual-quality binary images.
Dan P. Scholnik, Jeffrey O. Coleman
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1987
Let K be a field. A vector space V over the field K is an additive (abelian) group, together with a multiplication of elements of V by elements of K, i.e. an association $$ \left( {x,v} \right) \mapsto xv $$ of K × V into V, satisfying the following conditions: VS 1. If 1 is the unit element of K, then 1 υ = υ for all υ ∈ V. VS 2.
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Let K be a field. A vector space V over the field K is an additive (abelian) group, together with a multiplication of elements of V by elements of K, i.e. an association $$ \left( {x,v} \right) \mapsto xv $$ of K × V into V, satisfying the following conditions: VS 1. If 1 is the unit element of K, then 1 υ = υ for all υ ∈ V. VS 2.
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The Research of Matrix Converter Space Vector Modulation
2012For the problems of matrix converter in practical application, firstly this paper analyzes the working principle of matrix converter and the space vector modulation control strategy, then uses matlab/simulink to model and simulate for matrix converter, analyze the key problems of space vector modulation control strategy between the simulation: the ...
Zhuo Xu +3 more
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Discontinuous space vector modulation technique for motor supply
2011 IEEE EUROCON - International Conference on Computer as a Tool, 2011The paper presents a simulation study of a space vector modulation inverter that supplies an alternating current motor drive with low switching losses. A new technique of the reduced number of switchings within the modulating interval is proposed. Simulation results are based on the theoretical explanation.
Valery Vodovozov, Mikhail Egorov
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Linearization of Over-Modulation in Dodecagonal Space Vector PWM
2019 IEEE 28th International Symposium on Industrial Electronics (ISIE), 2019Growing commercial acceptance of electric vehicles (EV) resulted in increased focus on the development of technologies associated with it. This includes research on vehicle charging systems, traction inverters and motors, transmission systems, cooling mechanisms to name a few.
S. Ranjith, R. Sudharshan Kaarthik
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Space Vector Modulation for Multiphase Inverters Based on a Space Partitioning Algorithm
IEEE Transactions on Industrial Electronics, 2009Since the late 1990s, multiphase drives have become a serious alternative to three-phase drives in some particular applications such as electric ship propulsion, locomotive traction, electric vehicles, and high-power industrial applications. Nowadays, the research activity is focused on the development of control strategies that can exploit the degrees
A. Lega +4 more
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