Design and Implementation of Sliding-Mode Controller for Inverter of Fuel Cell

• Main Authors: Yu-Hsuan Liu, 劉育軒
• Other Authors: Wen-Jieh Wang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/8ge8bv

碩士 === 國立臺灣科技大學 === 電機工程系 === 94 === Abstract This thesis presents the design and implementation of a three phase inverter of proton exchange membrane fuel cell(PEMFC) generation system, based on discrete sliding mode(DSM) controller. The PEMFC generation system consists of a full bridge DC/DC converter to boost the fuel cell voltage (40 V) to 400 VDC, and the three phase DC/AC inverter is employed to produce 220V, 60Hz AC outputs. The DSM controller and PI controller, based on voltge space vector pulse width modulation (VSVPWM), is proposed to regulate voltage for stand-alone fashion or current for connected with power grid, separately. The experimental data show that while variance in load, the inverter of DSM controller has faster dynamic response than that of PI controller. In this thesis, the mathematical models and controller designs are built and simulated by MATLAB/Simulink. Then, a digital signal processor (DSP, TI TMS320F2812) is used to control the system for reducing the circuit complexity. A prototype of 866W PEMFC power conversion system is developed under stand-alone and grid-connected operation, separately. The system can feed proper power to the grid in grid-connected operation, while for stand-alone operation, the rated line-voltage is 220V and the frequency is 60Hz. Besides, efficiency of three phase inverter reaches 91% and voltage harmonic distortion of three phase power inverter output is 2.14%, which complies with IEEE Std. 519. Finally, simulation and experimental results are given to justify the analysis.