The commutation failure of high voltage direct current (HVDC) systems could lead to unstable operation the alternating current/direct (AC/DC) hybrid power grid. distortion caused by harmonics is a considerable but unclear factor failure. According control switching process HVDC systems, voltage-time area method employed analyze and reveal influence mechanism harmonic components on first subsequ...

After active neutral point clamped(ANPC) adopts SiC-MOSFETs, SiC-MOSFETs are easily damaged due to the excessive peak voltage. This paper establishes a single-phase parasitic inductance model of ANPC based on SiC-MOSFET half-bridge modules. Then, this model, cause voltage during commutation is analyzed. Finally, short-loop modulation strategy proposed under full working conditions ANPC. The con...

We establish the Schlieder and the Borchers property for thermal field theories. In addition, we provide some information on the commutation and localization properties of projection operators.

The Schrr odinger-Weyl representation of the canonical commutation relation is cir-culary invariant in a sense. Here, as a continuation of 5 , we show the converse.

We establish the Schlieder and the Borchers property for thermal field theories. In addition, we provide some information on the commutation and localization properties of projection operators.

Algebraic derivation of modified Heisenberg commutation rules for restricted Landau problem is given. ∗supported by the Lódź University grant No. 690.

We present four classes of nonlinear systems which may be considered discrete analogues of the Garnier system. These systems arise as discrete isomonodromic deformations of systems of linear difference equations in which the associated Lax matrices are presented in a factored form. A system of discrete isomonodromic deformations is completely determined by commutation relations between the fact...

In the talk, I briefly demonstrate the quantum theory for mesoscopic electric circuits and its applications. In the theory, the importance of the charge discreteness in a mesoscopic electric circuit is addressed. As a result, a new kind of commutation relation for electric charge and current occurred inevitably. The charge representation, canonical current representation and pseudo-current repr...

We study the dynamical features of the generalised commutation relations, derived uniquely by Maggiore. We focus on their generality and, in particular, their dependence on the Hamiltonian H . We derive the generalisation of the Planck’s law for black body spectrum, study the statistical mechanics of free particles, and study the early universe evolution which now exhibits non trivial features....

The behaviour in terms of robustness during turn-off of power IGBT modules is presented. The experimental characterisation is aimed to identify the main limits during turn-off in power IGBT modules in typical hard switching applications. In this paper an experimental characterization of high power IGBT modules at output currents beyond RBSOA, at high junction temperatures and under different dr...