Abstract
The deregulation and unbundling of electricity markets in many countries worldwide bring new perspectives for fuel cells. The connection between the fuel cell and the load is through an inverter using pulse width modulation (PWM). This paper presents a new flux modulation approach for the closed-loop control of the output voltage of inverters for fuel cell power plants. A fuzzy logic control is proposed for this PWM converter and the fuzzy scaling factors are optimized by using genetic algorithms. The proposed control scheme can achieve fast transient responses and, at the same time, have low total harmonic distortion in output current during steady-state operation. This genetic fuzzy controller demonstrates improved response than conventional flux vector method.
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