Modeliranje i regulacija pogona električnog vozila opremljenog hibridnim baterijsko-ultrakondenzatorskim sustavom za pohranu energije

master's thesis

• Title (english): Modeling and control of electric vehicle powertrain equipped with battery-ultracapacitor energy storage system
• Author: Marko Mance
• Mentor: Danijel Pavković (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2016-01-21, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Production Mechanical Engineering

Abstract

U radu je opisana paralelna aktivna struktura baterijsko-ultrakondenzatorskih sustava za pohranu energije, te glavne značajke suvremenih litijevih baterija za automobilske primjene i visokonaponskih ultrakondenzatorskih modula za primjene u transportu. Na temelju pretpostavljene topologije DC sabirnice električnog vozila postavljen je matematički model koji uključuje podsustave baterije i ultrakondenzatora opremljene DC/DC pretvaračima snage s ugrađenim regulatorima struje, te podsustav pogonskog servomotora (sinkronog motora s permanentnim magnetima) opremljenog reguliranim DC/AC pretvaračem (izmjenjivačem). Tako dobiveni model elektromotornog pogona vozila integriran je u pojednostavljeni model dinamike vozila za pravocrtno gibanje. Na temelju izvedenog matematičkog modela električnog vozila projektirani su podređeni sustavi regulacije struje baterije, ultrakondenzatora i pogonskog servomotora, te sustav koordinacije tokova snage baterije/ultrakondenzatora prema DC sabirnici vozila, uključujući pomoćni sustav regulacije stanja napunjenosti ultrakondenzatorskog modula. Potom je projektiran i nadređeni sustave regulacije pogona vozila, a koji uključuje regulaciju napona DC sabirnice i sustav predupravljanja okretnim momentom pogonskog servomotora, te odgovarajući sustav unaprijedne kompenzacije opterećenja na DC sabirnici proporcionalnog okretnom momentu servomotora. Valjanost predloženih koncepata regulacije ispitana je simulacijama na računalu za slučaj pokretanja vozila iz mirovanja zadavanjem komande konstantne akceleracije, te za profile brzine vozila tipičnih za vožnju u urbanim uvjetima (NEDC vozni ciklus).

Abstract (english)

This work presents the parallel active battery/ultracapacitor energy storage system topology, along with the main characteristics of contemporary automotive lithium batteries and high-voltage ultracapacitor modules for transportation applications. Based on the considered electric vehicle (EV) DC bus topology, a mathematical model has been derived which includes battery and ultracapacitor subsystems equipped with current-controlled DC/DC power converters, and power-train based on electric permanent magnet synchronous motor equipped with DC/AC power converter (inverter). Thus obtained electrical drive model is integrated within the simplified vehicle dynamics model for longitudinal motion. Based on the derived EV mathematical model inner-level battery, ultracapacitor and electrical drive servomotor current control systems have been designed, and integrated with the battery/ultracapacitor dynamic power flow coordination strategy with respect to the DC bus, including also the auxiliary ultracapacitor state-of-charge control system. This is followed by the design of superimposed (upper-level) power-train control system design, which includes DC bus voltage control and traction motor torque feed-forward control, as well as the feed-forward DC bus load compensator based on motor-torque proportional action. The proposed control concepts are validated by means of simulations for the case of constant-acceleration vehicle launch from standstill, and for the case of vehicle speed profiles typical for to urban driving (e.g. UDDS and NEDC driving cycles).

• Keywords: električno vozilo; DC sabirnica; baterija; ultrakondenzator; matematički model; regulacija; predupravljanje
• Keywords (english): Electric vehicle; DC bus; battery; ultracapacitor; mathematical model; feedback control; feed-forward action
• Language: croatian
• URN:NBN: urn:nbn:hr:235:813990
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-05-22 15:31:13