In order to meet the demands of bidirectional transmission electric vehicle charger power, a series-resonant dual-active-bridge (DAB) converter is investigated in this paper. Firstly, active and reactive power zero voltage switching (ZVS) conditions full-bridge arm under extended phase-shift modulation, dual modulation triple are analyzed. Secondly, with minimum as optimization objective, phase...

The peculiar behavior of active crystals is due to the presence of evolving phase mixtures the variety of which depends on the number of coexisting phases and the multiplicity of symmetryrelated variants. According to Gibbs’ phase rule, the number of phases in a single-component crystal is maximal at a triple point in the p-T phase diagram. In the vicinity of this special point the number of me...

At high pressure and temperature, the phase diagram of elemental carbon is poorly known. We present predictions of diamond and BC8 melting lines and their phase boundary in the solid phase, as obtained from first-principles calculations. Maxima are found in both melting lines, with a triple point located at approximately 850 GPa and approximately 7,400 K. Our results show that hot, compressed d...

We study the asymptotics of large, simple, labeled graphs constrained by the densities of edges and of k-star subgraphs, k ≥ 2 fixed. We prove that under such constraints graphs are “multipodal”: asymptotically in the number of vertices there is a partition of the vertices into M <∞ subsets V1, V2, . . . , VM , and a set of well-defined probabilities gij of an edge between any vi ∈ Vi and vj ∈ ...

A simplified second strain gradient Euler–Bernoulli beam theory with two non-classical elastic coefficients in addition to the classical constants is presented. The governing equation and associated boundary conditions are derived aid of variational principles. governed by an eighth-order differential displacement, slope, curvature triple derivative displacement as degrees freedom. This can be ...

We study the phase structure of the scalar field theory on fuzzy CPn in the large N limit. Considering the theory as a hermitian matrix model we compute the perturbative expansion of the kinetic term effective action under the assumption of distributions being close to the semicircle. We show that this model admits also a uniform order phase, corresponding to the asymmetric one-cut distribution...

Zinc-air flow batteries are a promising energy storage technology. Their performance depends on their porous cathodes where the oxygen reduction reaction (ORR) occurs. A key feature of cathode is invasion electrolyte, creating so-called triple phase boundary between air, electrolyte and catalyst, which shown in this work to be an overly simplified picture. In study mathematical framework based ...

The investigation of the phase behavior of substances has been a central subject in equilibrium thermodynamics due to the dramatic changes that take place in the macroscopic properties of substances during phase transitions [1]. Computer simulation has been an important tool to understand and predict the phase behavior of substances [2]. In most cases, computational studies can rely on classica...