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Limited storage capacity of battery constricts the usefulness of most high technology devices such as cell phones, computers, and sensors. In the future, these limitations will become more pronounced as the demand for wireless power outpaces battery development which is already at its best. Thus, we need to come up with new power generation techniques which will be used as an energy source for the...
This paper deals with the estimation problem in three-phase, three-level neutral point clamped (NPC) converter via nonlinear observer. An observer based on adaptive backstepping approach is used for capacitor voltages estimation. It is assumed that capacitance value of the DC-link capacitors are unknown.
In this paper we have grown catalyst-free In(Ga)N nanowires and dot-in-nanowire heterostructures on (001) and (111) silicon substrates by plasma-assisted MBE. The nanowires grow in the wurtzite structure with c-axis in the direction of growth. HRTEM data indicate that the nanowires and dot-in-nanowires are defect free. The diameter of the nanowires can be varied from 50-100nm by varying the growth...
Design and analysis of Digital Proportional Integral Derivative (PID) controllers for digital motion control involving dc motors are well documented and commercial/industrial off-the-shelf solutions are readily available. Majority of the said controllers are designed to work with brushless dc motors. However, many existing two-axis and three-axis gimbaled systems work with conventional analog PID...
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