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Confronted with severe environment issues, large scale utilization and development of wind energy and solar energy that are regenerative, non-pollution, green and clean, the best way for power generation and grid synchronization of distributed energy is to develop intelligence micro-grid. Amongst micro-grid, batteries will be connected with super capacitors to form hybrid energy storage system. Batteries...
A systematic analysis of 3-level integrated buck converters is conducted in this paper. Detailed derivations of the working principles, voltage conversion ratio and output voltage ripple are given. In particular, the system loop gain of 3-level buck converters is analyzed, which provides guidance on designing fast and robust 3-level converters. The derived loop gain is verified with time-domain small...
Rail transit plays an increasingly important role in the public transportation system, and effectively reducing its headway is of great practical significance. An optimization method is proposed to minimize headway of mainline in moving block by comprehensively considering trip time. A particle swarm optimization (PSO) algorithm is developed to search for optimized points and value of speed limit...
The problem of chip control is an important issue faced by many advanced manufacturing method during processing, which affects production efficiency significantly. This paper analyzes and studies the mechanism of chip generation, curling, and breaking and sets up its mathematic model. Using VC++ to write the solution program, a set of relevant mathematic models of chip generation and breaking have...
This paper presents a finite-element (FE) simulation study of a planar contactless battery charging platform for portable consumer electronic equipment. Magnetic field plots of the charging platform are generated under no-load and loaded conditions so that the field distribution of the planar charging platform can be visualized. Three working modes of the platform have been investigated and compared,...
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