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Elektrilise formula student võistlusauto FEST17 laadimissüsteem

Jürgenstein, Siim (2017) Elektrilise formula student võistlusauto FEST17 laadimissüsteem. [thesis] [en] Electrical Formula Student Racecar Fest17 Charging System.

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Abstract

FEST17 puhul projekteeris lõputöö autor tudengivormeli sarja reeglitele vastava laadimissüsteemi elektrilise ja mehaanilise osa. Selleks tuli tutvuda meeskonna poolt projekteeritud eelnevate aastate süsteemidega ning nende puudujääkidega. Lisaks uuriti, mis süsteemid vastutavad FEST17 akuseadme elektrilise halduse eest ning kas neid tuleb kaasata ka laadimissüsteemi projekteerimisse. Akuseadme meeskonnalt tuli uurida, mis viisil on omavahel ühendatud akuelemendid ning akumoodulid, et valida laadimissüsteemi komponendid. Elektrilise osa all projekteeriti elektriskeem ning valiti välja põhilised komponendid vastavalt akuseadme ehitusele ning sarja reeglitele. Elektriskeemid jagunesid kahte gruppi, milleks on peaahel ja juhtahel. Mõlematesse skeemidesse on paigutatud ka vajalikud komponendid, millega süsteemi olekut lülitatakse ning jälgitakse. Turvalisuse huvides on täiustatud laadimissüsteemi ahelaid vastavate kaitseaparaatide ning turvaahelatega. Toiteploki valikul oli võeti arvesse seda, et oleks võimalik juhtida erinevaid väljundparameetreid läbi CANopen võrgu. Toiteploki valimise käigus selgus, et Tallinna meeskonna süsteemile sobivaid valikuid on väga vähe. Mehaanilise osa projekteerimisel lähtuti valitud toiteploki mõõtmetest ning eelnevatel aastatel välja tulnud puudujääkidest. FEST17 laadimissüsteemi kärule projekteeriti uus ning täiustatud pidurisüsteem ning muudeti pööravate rataste asukohta esiteljelt tagateljele. Lisaks valiti välja materjalid, millest uus käru toota. Materjalide valikul lähtuti sellest, et meeskonnal on aegade jooksul üle jäänud väga palju jääke ning oleks võimalik need käru ehitamisel ära kasutada. Viimase osana on koostatud tabel komponentidest ning materjalidest, mis on vaja meeskonnal laadimissüsteemi ehitamise puhul vaja osta, ning mis on nende hetkelised maksumused. Laadimissüsteemi maksumust on oluline teada sellepärast, et juhul kui peale lõputöö valmimist finantsiline seis paraneb, oleks teada kui suure kulutusega on tegemist. Järgnevate aastate puhul on võimalik jätta samaks suur osa FEST17 laadimissüsteemist ning täiustada seda ainult uute sarja reeglimuutuste selgumisel.

Abstract [en]

The aim of this thesis is to design the electrical and mechanical parts of a charging system which would comply with the rules of an engineering competition Formula Student. The thesis describes previous charging systems and analyses their shortcomings. Furthermore, it also examines, which systems are responsible for the electrical management of the battery of FEST17 and whether they should be included in the charging system’s design. The thesis also includes research about the way battery cells and battery modules are connected in order to select the components for the charging system. The electrical part of the thesis consists of designing the electrical scheme and selecting the main components according to the structure of the battery and the rules of Formula Student. The electrical schemes are divided into two groups: main scheme and control scheme. The necessary components that switch and monitor the system have been added to both electrical schemes. The schemes of the charging system have been improved with safety cirquits and protection apparatus for safety considerations. When choosing the power supply, the ability to control different output parameters through a CANopen network was sought. The search for an appropriate power supply showed that there are very few suitable options for FS Team Tallinn. The design of the mechanical part was based on the measurements of the selected power supply and the shortcomings from previous years were also taken into account. An improved brake-system was designed for the charging system cart of FEST17. In addition, the location of the swivelling wheels was changed from the front axle to the rear axle. The thesis also includes the selection of the materials for producing the new accumulator cart. Material selection was mainly based on the fact that the team has a lot of leftovers which could be used in the construction of the cart. The last part of the thesis includes a table of the components and materials that are needed to construct the charging system together with their approximate momentary costs. The charging system designed for FEST17 can be used in the future without major changes and by improving it in case the rules of the competition change.

Item Type: thesis
Advisor: Samo Saarts
Co-advisor: Rainer Lepik
Subjects: Mechanical Engineering > Electrical Engineering and Electrical Equipment
Divisions: Institute of Engineering > Electrical Engineering
Depositing User: Siim Jürgenstein
Date Deposited: 08 Jun 2017 07:32
Last Modified: 08 Jun 2017 07:32
URI: http://eprints.tktk.ee/id/eprint/2985

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