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- Luis Herrera, Wei Zhang, Zhongjing Wang
- IEEE Transactions on Smart Grid
- 2015

DC microgrids consist of multiple power electronic converter units interconnected in a network with sources and loads. They are commonly found in the power systems of electric ships, aircrafts, etc.â€¦ (More)

- Luis Herrera
- 2001

Contrary to what is asserted in a recent paper by KostÃ¤dt and Liu (" Causal-ity and stability of the relativistic diffusion equation ") [1], experiments can tell apart (and in fact do) hyperbolicâ€¦ (More)

- Luis Herrera, Filipe M. Paiva, Nathalia O Santos
- 1998

It is shown that the Levi-Civita metric can be obtained from a family of the Weyl metric, the Î³ metric, by taking the limit when the length of its Newtonian image source tends to infinity. In thisâ€¦ (More)

- Luis Herrera
- Entropy
- 2017

It is well known that, in the context of General Relativity, some spacetimes, when described by a congruence of comoving observers, may consist of a distribution of a perfect (nonâ€“dissipative) fluid,â€¦ (More)

- Luis Herrera, W Barreto, J Carot, Alicia Di Prisco
- 2007

We calculate the vorticity of worldâ€“lines of observers at rest in a Bondiâ€“ Sachs frame, produced by gravitational radiation, in a general Sachs metric. We claim that such an effect is related to theâ€¦ (More)

- Luis Herrera
- 1998

A relativistic model of a heat conducting collapsing star, which includes thermal pre-relaxation processes, is presented. Particular attention is paid to the influence of a given parameter defined inâ€¦ (More)

The condition for the vanishing of the Weyl tensor is integrated in the spherically symmetric case. Then, the resulting expression is used to find new, conformally flat, interior solutions toâ€¦ (More)

We obtain an expression for the active gravitational mass of a relativistic heat conducting fluid, just after its departure from hydrostatic equilibrium, on a time scale of the order of relaxationâ€¦ (More)

- Luis Herrera
- 1999

We present a critical review of the relativistic rotation transformation of Trocheris and Takeno. A new transformation is proposed which is free from the drawbacks of the former. Some applicationsâ€¦ (More)

An algorithm recently presented by Lake to obtain all static spherically symmetric perfect fluid solutions, is extended to the case of locally anisotropic fluids (principal stresses unequal). Asâ€¦ (More)