Modelling, Optimisation, and Design of Fast Switching Solenoid Valve
Translated title
Modellering, Optimering of Design af en hurtigt skiftende solenoide ventil
Author
Jørgensen, Torben Ejnar Løvbjerg
Term
4. term
Education
Publication year
2017
Submitted on
2017-06-01
Pages
63
Abstract
Efterhånden som vindmøller bliver større, nærmer traditionelle mekaniske gearkasser sig deres grænser. Hydrostatisk transmission, hvor kraft overføres med tryksat væske, er et muligt alternativ. Men konventionelle hydrauliske pumper og motorer er ineffektive ved meget små slagvolumener, så der er behov for videre udvikling. Digital Displacement Technology (DDT) er et lovende spor, men kræver ventiler med lavt trykfald (minimalt tryktab, når væsken strømmer) og meget hurtig omskiftning. Denne afhandling modellerer, optimerer og designer en sådan ventil. Fokus er en variabel‑reluktans- eller solenoideventil—en elektromagnetisk aktueret ventil, kendt for sin pålidelighed, men med langsommere transientrespons end nyere løsninger. Arbejdet søgte at reducere denne ulempe. Hovedresultatet er en designafvejning: For at opnå det nødvendige lave trykfald må ventilen have større vandring, hvilket øger skiftetiden. Det gør ventilen langsommere og giver en ineffektiv samlet løsning under disse krav.
As wind turbines get larger, traditional mechanical gearboxes are reaching their limits. Hydrostatic transmissions, which transmit power using pressurized fluid, are a potential alternative. However, conventional hydraulic pumps and motors are inefficient at very small displacements, so further improvement is needed. Digital Displacement Technology (DDT) is a promising path, but it depends on valves with very low pressure drop (minimal loss of pressure as fluid flows) and extremely fast switching. This thesis models, optimizes, and designs such a valve. It focuses on a variable‑reluctance, or solenoid, valve—an electromagnetically actuated design known for reliability but with slower transient response than newer options. The work aimed to reduce this drawback. The main finding is a design trade‑off: achieving the required low pressure drop demands a larger valve travel distance, which increases switching time. This slows the valve and leads to an inefficient overall design under those constraints.
[This abstract was generated with the help of AI]
Keywords
Documents