Results 201 to 210 of about 6,254,902 (251)
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2020
The space vector (SVM) modulation, also known as SVPWM, is increasingly replacing more traditional modulations such as six-step and sinusoidal modulation as it provides better use of the available DC-link voltage and a reduction in harmonic content.
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The space vector (SVM) modulation, also known as SVPWM, is increasingly replacing more traditional modulations such as six-step and sinusoidal modulation as it provides better use of the available DC-link voltage and a reduction in harmonic content.
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Inverter Control with Space Vector Modulation
2008Figure 2.1 shows the principle circuit of an inverter fed 3-phase AC motor with three phase windings u, v and w. The three phase voltages are applied by three pairs of semiconductor switches v u+/v u−, v v+/v v- and v w+/v w− with amplitude, frequency and phase angle defined by microcontroller calculated pulse patterns.
Nguyen Phung Quang +1 more
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An effective software implementation of the space-vector modulation
IEEE Transactions on Industrial Electronics, 1999An effective software implementation of the space-vector modulation (SVM) on the rotating - frame is proposed. The conven- tional SVM algorithm requires complex computations, such as square root and arctangent. The SVM algorithm is further developed to deter- mine directly conduction times of switches without requiring complex computations.
Jang-Hyoun Youm, Bong-Hwan Kwon
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2021
This article outlines the theoretical principles and practical implementation of Space Vector Modulation (SVM) for two-level and three-level inverters. As a highly efficient alternative to traditional carrier-based modulation, SVM operates in the stationary Clarke reference frame.
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This article outlines the theoretical principles and practical implementation of Space Vector Modulation (SVM) for two-level and three-level inverters. As a highly efficient alternative to traditional carrier-based modulation, SVM operates in the stationary Clarke reference frame.
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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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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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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-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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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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