P-resonant control for the neutral point of three phase inverter

In this project, a Proportional resonant (PR) current controller is proposed to maintain a balanced neutral point for a three-phase four wire inverter, which can be used in microgrid applications. The neutral-point circuit consists of a conventional neutral leg and a split DC link. The neutral point is balanced with respect to the two DC source terminals (as required, in neutral-point clamped three-level converters) even when the neutral current is large so that the inverter can be connected to an unbalanced load. The controller, designed by using the Proportional resonant control techniques, which attain eliminate for the current flowing through the split capacitors. This leads to very small variation of the neutral point from the mid-point of the DC source, in spite of the possibly large neutral current. The simulation of inverter circuit, neutral-point and P-resonant has been performed using MATLAB/SIMULINK software. The simulation results confirm the validity of the proposed method, which can be seen as a promising that ensure P-resonant control suitable for microgrid applications

Structure coefficients of the Hecke algebra of (S2n,Bn)(S_{2n},B_n)

The Hecke algebra of the pair $(S_{2n},B_n)$, where $B_n$ is the hyperoctahedral subgroup of $S_{2n}$, was introduced by James in 1961. It is a natural analogue of the center of the symmetric group algebra. In this paper, we give a polynomiality property of its structure coefficients. Our main tool is a combinatorial universal algebra which projects on the Hecke algebra of $(S_{2n},B_n)$ for every $n$. To build it, we introduce new objects called partial bijections.Comment: 32 pages, 15 figure

New results on collectivity with ALICE

An overview of recent ALICE results aimed to understand collective phenomena in Pb-Pb collisions at the LHC is presented. These include the centrality dependence of the transverse momentum ($p_{\rm T}$) distributions of charged pions, kaons, and protons as well as results on anisotropic flow using data from Pb-Pb collisions at $\sqrt{s_{{\mathrm{NN}}}} = 5.02$ TeV. In addition, comparisons between data and model predictions are presented.Comment: Proceedings for a parallel session talk at the Fifth Annual Large Hadron Collider Physics Conference, 15-20 May 2017. 6 pages, 7 figure

Uncertainty and Tobin´s q in a monopolistic competition framework

This paper combines the adjustment cost hypothesis of Tobin's q models with Malinvaud's proposition that demand uncertainty matters in explaining investment. Demand uncertainty allows for ex-post excess capacity and leads firms to look at the expeeted excess capacity in deciding about investment. Marginal q is shown to be smaller than average q, the difference being explained by the degree of capacity utilization (DUC)

A regression Monte-Carlo method for Backward Doubly Stochastic Differential Equations

This paper extends the idea of E.Gobet, J.P.Lemor and X.Warin from the setting of Backward Stochastic Differential Equations to that of Backward Doubly Stochastic Differential equations. We propose some numerical approximation scheme of these equations introduced by E.Pardoux and S.Peng