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The multilevel converter is a prospective topology for both Medium Voltage and High Voltage Direct Current (HVDC) applications. In high power application, the forward topology is applied to increase the power region. In this paper, a novel forward-mode five-level inverter is presented which combines the features of the conventional multilevel converters and forward topology. The converters can transfer...
The traditional artificial cigarette review methods are difficult to match the high-speed automatic cigarette sorting system. In this paper, a new cigarette recognition method using the uniqueness of cigarette bar codes was proposed. Firstly, a binary image filtering algorithm based on square adaptive structure element of mathematical morphology (SASEMM) was used to get several potential sub-regions,...
A circuit topology of the forward-mode three-level inverter is proposed. The kind of circuit topologies are constituted of three-level converter, high frequency transformer, output cycloconverter, output filter and so on. The inverter has the advantages such as simple topology, two-stage power conversions(DC/HFAC/LFAC), bidirectional power flow, high frequency electrical isolation, three-level voltage...
In order to solve the problems existed in the field of high power applications such as voltage stresses and harmonic interferences of the two-level AC / AC converter, a new kind of high frequency isolated half-bridge three-level AC / AC direct converter is proposed, which can convert one alternating voltage with instability distortion to another regulated constant frequency sinusoidal voltage. The...
Enhanced digital signal processing algorithms are proposed and evaluated experimentally in order to improve the tolerances to intra-channel and inter-channel nonlinear effects of intradyne receiver and thus to extend the reach of WDM transmission systems.
An interactive electronic technical manual (IETM) is a digital document designed to operate interactively with the user. In order to organize lots of technical data in IETMs, an IETM data model is needed. In this paper, we propose an extensible IETM data model which consists of a minimal set of data types to define the core processing logic of IETM browsers. Domain-specific data types are created...
A circuit topology of the push-pull three-level AC/AC converter with high frequency link is firstly proposed. The circuit topology of this converter is constituted of multilevel converter, high frequency transformer, output cyclic converter. The three-level push-pull AC/AC converter have the advantages such as simple topology, two stage power conversions, bidirectional power flow , high frequency...
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