Fuel Cell Integrated with Five Level VSI for Industrial Pump Applications

Abstract

This paper investigates and analyzes a Solid Oxide Fuel Cell (SOFC) connected three-phase five level voltage source inverter (VSI) supplying induction motor driven industrial pump systems. The neutral point clamped (NPC) topology is used for multilevel VSI and phase disposition switching frequency optimal pulse width modulation (PD-SFO PWM) technique is proposed for producing three-phase five level ac  voltages. The output of VSI is used to drive three-phase induction motor driving a pump load system. Extensive studies have been carried out on the proposed novel system. The harmonic analysis of the proposed multilevel VSI output is also evaluated to assess the power quality. The proposed model is implemented in MATLAB/SIMULINK environment to obtain the results under different operating conditions, which thereby validates the proposed system model.

Keywords

• Five level inverter; Induction motor drive; PD-SFO PWM; Pump load; Solid Oxide Fuel Cell (SOFC)

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