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Fuel cell based auxiliary power units (APU) could be a good alternative to conventional, kerosene operated APUs. The eco efficiency could be enlarged by this technology. The dynamic characteristic of fuel cell systems necessitates an adaption of the electrical system. Using short time energy storage power delivery can be extended, demonstrated by a Matlab Simulink Simpower-Systems simulation with...
An electric vehicle can be powered by a single source or a combination of multiple sources, e.g. lead-acid batteries, solar cells, and fuel cells. Thus, coordination of different power sources for an electric vehicle has been recently becoming an important issue. The objective of this paper is to evaluate the performance of a multi-power system for an electric vehicle powered by lead-acid batteries...
Design an electrical locomotive 110 V D.C. source with PFC based on the structure of two-stage switching converter. Discuss the design scheme of main circuit and control circuit. Expound the calculation method of the key parameters. The experiments indicate that the device gets good performance on output and reliability. The electric source is appropriate for electrical locomotive and the other similar...
In electric vehicle (EV) drive voltage source inverter (VSI), DC-link capacitor can be primarily designed on RMS current value and its capacitance can be selected small values cause of bulky equivalent capacitor in battery. An advanced film capacitor is adopted to replace the conventional electrolytic bulk capacitors. This paper describes the PSpice model of VSI with major parasitic parameters and...
A novel bi-directional buck-boost converter used for battery charging and discharging cooperated with a three-level half bridge inverter in a UPS is proposed. The operation of charging and discharging can be controlled respectively, and the capacitor voltage balance can be achieved based on the peak current control. The operating principle and parameter design of the converter are analyzed in detail...
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