Power Control in Fuel Cell Electric Vehicle: Design of fuel cell mean output power controller, utilizing parallel super capacitor converter and bank
Translated title
Power Control in Fuel Cell Electric Vehicle
Author
Jacobsen, Jonas
Term
4. term
Education
Publication year
2020
Submitted on
2020-05-28
Pages
98
Abstract
Dette studie undersøger, hvordan superkondensatorer kan integreres i en brændselscelle‑elbil for at håndtere hurtige ændringer i effektbehov. Opgaven er at udvikle en effektregulator, der holder brændselscellens middel‑effekt på et valgt niveau, selv når elmotorens belastning varierer. Regulatoren virker ved at styre jævnstrømsbussens (DC‑bussens) spænding, som er direkte knyttet til brændselscellens spænding i en parallel DC‑bus. Ved at holde denne spænding stabil fastlægges brændselscellens spænding og dermed dens effekt. I designet betragtes elmotorens varierende effektbehov som en forstyrrelse. For at forbedre forstyrrelsesafvisningen anvendes feedforward‑styring, en forudsigende metode der kompenserer for ændringer, før de slår igennem. I forsøg med et trin i motorens effekt fra 0 til 270 W giver DC‑bussen kun en lille spændingskrusning på 0,1–0,5 V, og middel udgangseffekt ligger inden for 10 % af den ønskede værdi.
This study explores how to integrate supercapacitors into a fuel‑cell electric vehicle to handle fast changes in power demand. The goal is to design a power controller that keeps the fuel cell’s average power at a chosen level, even as the motor load varies. The controller works by regulating the DC bus voltage, which is directly tied to the fuel cell voltage in a parallel DC bus. By keeping this voltage stable, it indirectly sets the fuel cell’s voltage and therefore its power. In the control design, the motor’s varying power demand is treated as a disturbance. To improve disturbance rejection, the design uses feedforward control, a predictive method that compensates for changes before they fully affect the system. In tests with a step in motor power from 0 to 270 W, the DC bus voltage shows only a small ripple of 0.1–0.5 V, and the mean output power remains within 10% of the desired value.
[This abstract was generated with the help of AI]
Keywords
Super Capacitors ; Fuel cell ; Ecoracer ; PMSM ; SOC ; Current control ; Power control
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