Enumeration of derangements in the symmetric group $\mathfrak{S}_n$ is classical. Extensions enumerative results to hyperoctahedral $B_n$ are combinatorially sound. That even-signed permutation $D_n$ remains largely unexplored. Let $d_n^D(q) = \sum_{\sigma \in \mathcal{D}_n^D} q^{\operatorname{maj}(\sigma)}$ be generating function by their major indices. We study this work properties $d_n^D(q)$...

Abstract: A combination of Direct Torque Control (DTC) and Space Vector Modulation (SVM) for an Induction Motor (IM) drive is defined in this paper. A two-level SVPWM inverter is delivered to the induction motor drive. Using IM model in the stator D-Q axes reference frame. The inverter voltage is achieved based on inputoutput feedback linearization control. This paper signifies a Fuzzy Logic Co...

A new topology of a hybrid distributed generator based on photovoltaic and wind-driven permanent magnet synchronous generator is proposed. In this generator, the sources are together connected to the grid with the help of only a single boost converter followed by an inverter. Thus, compared to earlier schemes, the proposed scheme has fewer power converters. Model of the proposed scheme in d-q a...

This paper discusses modeling and parameter estimation of PMSM. The design of a control system for a high performance drive requires a mathematical model of the motor. This is usually derived from physical principles, then the parameters of the motor are determined through off-line testing or estimated on-line from input/output operating records data. The dynamics of synchronous motor can be de...

Simulations of AC electric machines are usually performed in a coordinate system, or reference frame, with two axes (often denoted by d and q, or represented as a complex space vector). A third axis, the zero-sequence axis, is a homopolar axis that is necessary for handling certain unbalanced conditions. Historically, the transformation was essential to getting reasonable results, since computa...

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