Fluid approximation results provide powerful methods for scalable analysis of models population dynamics with large numbers discrete states and have seen wide-ranging applications in modelling biological computer-based systems model checking. However, the applicability these relies on assumptions that are not easily met a number scenarios. This article focuses one particular class scenarios whi...

We study the detailed propagative characteristics of optical pulses in photonic band-gap PBG waveguides, coupled near resonantly to inhomogeneously broadened distributions of quantum dots. The line centers of the quantum-dot QD distributions are placed near a sharp discontinuity in the local electromagnetic density of states. Using finite-difference time-domain FDTD simulations of optical pulse...

An open-end winding permanent magnet synchronous motor (PMSM) has a larger range of speed regulation than normal PMSM with the same DC voltage, and the control method is more flexible. It can also manage energy distribution between two power sources without a DC/DC converter. This paper aims at an electric vehicle equipped with OW-PMSM drive system with dual power sources and dual inverters; ba...

Nonlinear systems, such as switching DC-DC boost or buck converters, have rich dynamics. A simple one-dimensional discrete-time model is used to analyze the boost or buck converter in discontinuous conduction mode. Seven different control schemes (open-loop power stage, voltage mode control, current mode control, constant power load, constant current load, constanton-time control, and boundary ...

13 watt Current Mode Class-D (CMCD) with 60% efficiency is presented. This amplifier is the highest power switch mode microwave power amplifier reported to date. The CMCD architecture is an improvement over the Voltage Mode Class-D in that the parasitic reactance in the active device can be absorbed into the tank circuit resulting in a zero voltage switching condition.