Dynamic simulation of permanent magnet synchronous machine

Krčum, Maja; Gudelj, Anita; Jurić, Zdeslav

doi:10.1109/melcon.2004.1348258

Cited by 2 publications

(2 citation statements)

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“…Its open-circuit voltage V OC was calculated, as shown in Equations ( 3), as the product of the voltage constant at nominal operation K C and the Nernst voltage E n . The exchange current i O , shown in Equation ( 4), is a function of the Boltzmann's constant k, the partial pressures of hydrogen p H2 and oxygen p O2 , the ideal gas constant R, the Planck's constant h, the activation energy barrier ∆G, and the temperature of operation T. Finally, Equation (5) shows that the Tafel slope A is a function of the ideal gas constant R, the temperature T, and the charge transfer coefficient α.…”

Section: Mathematical Simulation Modelmentioning

confidence: 99%

“…Hydrogen fuel cells (FC) can rely on different principles and are found in various sizes; however, all of them generate electrical energy via an electrochemical reaction [1]. Proton exchange membrane fuel cells (PEMFCs) have been developed for a wide span of power outputs, ranging from micro PEMFCs with 100 mW to applications requiring several kW [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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New Control Strategy for Heating Portable Fuel Cell Power Systems for Energy-Efficient and Reliable Operation

et al. 2022

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Using hydrogen fuel cells for power systems, temperature conditions are important for efficient and reliable operations, especially in low-temperature environments. A heating system with an electrical energy buffer is therefore required for reliable operation. There is a research gap in finding an appropriate control strategy regarding energy efficiency and reliable operations for different environmental conditions. This paper investigates heating strategies for the subfreezing start of a fuel cell for portable applications at an early development stage to enable frontloading in product engineering. The strategies were investigated by simulation and experiment. A prototype for such a system was built and tested for subfreezing start-ups and non-subfreezing start-ups. This was done by heating the fuel cell system with different control strategies to test their efficiency. It was found that operating strategies to heat up the fuel cell system can ensure a more reliable and energy-efficient operation. The heating strategy needs to be adjusted according to the ambient conditions, as this influences the required heating energy, efficiency, and reliable operation of the system. A differentiation in the control strategy between subfreezing and non-subfreezing temperatures is recommended due to reliability reasons.

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Section: Mathematical Simulation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%