PEMFC energized high step up converters for induction motor drive

Abstract

Renewable energy resources are slowly replacing fossil fuels in all newlinethe applications. Though there are various renewable energy resources available newlinefor transportation and static power generation, the fuel cell technology is newlinegrowing up fast nowadays. Among the types of fuel cells, PEM fuel cell is newlinemostly used due to its salient features like efficient, low operating temperature, newlinehigh energy density, quick start up and compact in size. Since its output voltage newlinedepends on operating parameters like temperature, fuel pressure, air pressure, newlinemembrane water content etc.., it is essential to adopt an optimum power newlinecontroller to extract maximum power from PEM fuel cell irrespective of varying newlineoperating condition. The output voltage of PEM fuel cell must be regulated with newlinethe help of DC-DC converter before it is fed to end applications. It is better to newlineuse DC-DC converter with soft switching capability to improve voltage newlineconversion ratio and power conversion efficiency. To use the PEM fuel cell newlineoutput power for AC load, it is essential to use an inverter with advanced PWM newlinetechniques to supply high quality AC power to the load. newlineTo address the above necessities, an induction motor drive system fed newlinefrom 1.26kW PEM fuel cell is proposed in this research work. The proposed newlinesystem consists of Resonant PWM High Step up Converter (RPHS) and newlineInterleaved Resonant PWM High Step up Converter (IRPHS). Both the newlineconverters are assured to trigger at ZVS condition to have reduced switching newlinelosses and improve over all conversion efficiency. The RPHS converter switches newlineare triggered based on duty cycle generated using a variable step size FLC based newlineMPPT controller during dynamic temperature condition. The power tracing newlineability of variable step size FLC based MPPT controller is compared with newlineconventional IC, PandO controllers. The IRPHS converter switches are triggered newlineusing Artificial Neural Network (ANN) based MPPT controller during dynamic newlinetemperature condition. The power tracking efficacy of ANN based MPPT newlinecontroller is compared with a variable step size FLC based MPPT controller. newline