| Summary: | 碩士 === 建國科技大學 === 電子工程系暨研究所 === 101 === In this paper, an optimal design of multi-decision logic control is proposed for light The power sources are come from Li-battery and Proton Exchange Membrane Fuel Cell (PEMFC). Using gray model GM(1,n), based on the gray theory, the structure of electrical power system design is established under the power estimating on motor load and multi-decision logic control system using. Then, matching with the transistor for charging and discharging Li-battery via switching method, the input/output (charging/discharging) powers of Li-battery can be controlled and the output power of PEMFC can be stabilized. Therefore, the LEV system can operate normally with sufficient power. And the objective of power management more efficiently can be achieved. Here, we should point out that the duty cycle of switching transistor is the best choice by using Taguchi method. Furthermore, the parameters of gray estimation are voltage, current and power operated in LEV (motor). At beginning, the performance simulations for Li-battery and PEMFC should be done. Then, the multi-decision logic control of system is designed. From the preliminary results of system simulation, the designed multi-decision logic control system, which can supply electrical power during the operation period, will go on work to the exhaust of fuel and will not cause the problem of cessation. Therefore, the good response of power management can be achieved efficiently.
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