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This report is the result of a Master’s Thesis done at the Machine Design Department at the Royal Institute of Technology. The project was carried out at Svea Teknik AB in cooperation with Atlas Copco Rock Drills AB and the Mining and Rock Excavation division in Örebro. Atlas Copco is currently developing a new TBM for mechanical rock excavation, which have been named the RVM (Remote Vein Miner. When doing the excavation, stresses and cracks are induced in the tunnel walls and roof, why it is necessary to reinforce the tunnel so that is does not collapse. In this case this is done by drilling holes and inserting rock bolts into the tunnel walls, and at the same time clothe the walls with a chain link mesh. The operators that are doing this are working in an unsecured part of the tunnel and are hence exposed to a safety risk. It is therefore of interest to make this mesh mounting procedure automated. The project’s purpose was to develop a design concept for the mesh handling and mounting for the RVM that require less manual hands-on work by the operators, i.e. replacing the existing semi-manual mesh handling to a solution that instead can be automatized and remote controlled. Brainstorming was used to generate 6 different concepts, 4 for the mesh handling and 2 for the bolt handling, which were evaluated in two separate Pugh’s evaluation matrices. The two concepts that was deemed most promising, the bolt carrousel and an arm handling solution for mesh rolls, were further developed. CAD models of the included components and systems were made and used to verify the arm’s range and that it fulfilled all of the constraints related to the spatial limitations on the machine. The hydraulic cylinders were dimensioned with forces obtained from an ADAMS simulation. The final conceptual design did fulfil the requirements, but was considered to be very complex and concerns were made regarding how it would handle the harsh environment in the tunnel. / Denna rapport är resultatet av ett examensarbete som utförts på Institutionen för Maskinkonstruktion på KTH. Projektet gjordes med Svea Teknik AB i samarbete med Atlas Copco Rock Drills AB och deras avdelning för Gruv- och Bergbrytningsteknik i Örebro. Atlas Copco håller för närvarande på att utveckla en ny TBM för mekanisk bergavverkning, som har fått namnet RVM (Remote Vein Miner). När bergavverkning sker så induceras spänningar och sprickor i berget som omger tunneln och det är därför nödvändigt att förstärka tunneln så att den inte rasar samman. I detta fall så sker denna förstärkning genom att borra hål i tunnelväggen och sätta in bergbultar, och samtidigt klä väggarna med ett skyddande nät. När operatörerna utför detta arbete så befinner de sig i en del av tunneln som inte är säkrad och de är således utsatta för säkerhetsrisker. Det är därför av intresse att göra denna nätmonteringsprocess automatiserad. Syftet med detta projekt var att utveckla en konceptkonstruktion för näthanteringen- och monteringen för RVM-maskinen som innebär mindre manuellt arbete av operatörerna, alltså att ersätta den nuvarande semi-manuella näthanteringslösningen med en lösning som istället kan automatiseras och fjärrstyras. Brainstormning användes för att ta fram 6 stycken olika koncept, 4 gällande näthanteringen och 2 för bulthanteringen. Dessa koncept utvärderades i två separata Pugh matriser. De två koncept som ansågs vara de mest lovande, bultkarusellen och en armkonstruktion för hantering av nätrullar, utvecklades vidare. CAD-modeller av de inkluderade komponenterna och systemen gjordes och användes för att verifiera armens räckvidd och att den uppfyllde att hålla sig inom maskinens platsbegränsningar. De hydrauliska cylindrarna dimensionerades utifrån krafter som erhölls från en ADAMS-simulering. Den slutgiltiga konstruktionen uppfyllde alla specificerade krav, men ansågs vara väldigt komplex och det ansågs osäkert hur och om den skulle klara av den mycket tuffa miljön i tunnelgången.

Static compensators (STATCOM) based on high-power converters are widely used for utilitiesand industrial applications in order to enhance the power system reliability. Nowadays,the Chain-Link Modular Multilevel Converter is the best solution for such applications,providing high eciency and reliability, and good harmonic performance. However, thecurrent delta and wye congurations present diculties in controlling negative sequencein unbalanced networks, as well as high capacitance requirements, which results in bulkySTATCOMs.This thesis aims to analyse a new Chain-Link Modular Multilevel Converter for STATCOMapplications. The main feature of the proposed topology is the presence of a commondc-link that will allow the exchange of energy between phases, facilitating the compensationof negative sequence components. Consequently, the required zero sequence componentinjection for the current Chain-Link congurations are avoided, and thus, also theconsequent over-sizing of the converter. Moreover, it is expected to have lower capacitancerequirements, because of the elimination of the second order harmonic (100 Hz)component in most of the capacitors, as they are charged and discharged by a bi-phasecurrent instead of a single-phase one. Additionally, lower conduction losses are expectedby reducing the number of devices in the conduction path.The layout and operation of the new converter have been analysed in this thesis.A STATCOM Simulink model provided by ABB has been modied to satisfy the newtopology. The theoretical benets of the proposed converter are supported by dierentsimulations carried out in Matlab-Simulink. In particular, it is shown a 50 % of negativesequence capability without any zero sequence component injection. The total capacitanceof the converter can be reduced a 30 % in comparison with the delta Chain-LinkModular Multilevel Converter, which is the preferable topology in the market nowadays.Furthermore, the losses are kept quite low if SiC semiconductors are used.On the other hand, the proposed topology requires the usage of bi-directional switchesto do the commutation and allow the exchange of energy between phases. An in-depthanalysis of the commutation process is shown at the end of this thesis, concluding that BidirectionalControlled Thyristors would be a promising solution for this converter topology. / Reaktiv effektkompensering (STATCOM) baserade på högeffektomvandlare används vidaför samhällsservice och industriella användningar för att förbättra elsystemet pålitliga.Nuförtiden, Chain-Link Modular Multilevel Converter är den bästa lösningen för sådanaanvändningar, vilket ger hög verkningsgrad och mycket pålitliga, samt låg harmonisk distortion.Hursomhelst, den nuvarande delta och wye konfigurationer presentera svårigheteratt kontrollera negativ sekvens i obalanserade nätverk, vilket leder till överdimensioneringav omvandlaren. Vidare, dessa Chain-Link topologier har hög kapacitans kraven, vilketresulterar i skrymmande STATCOMs.Den här avhandlingen syftar till att analysera en ny Chain-Link Modular MultilevelConverter för STATCOM användningar. Det viktigaste kännetecken av den föreslagnatopologi är närvaron av en gemensam likspänningslänk som gör det möjligt utbytet avenergi mellan faserna, som underlättar ersättning av negativ sekvens komponenter. Pådetta sätt, den behövlig noll sekvens komponent injektion i de aktuella konfigurationernaundviks, och således, också den därav följande överdimensioneringen av omvandlaren.Dessutom, förväntas det att ha lägre kapacitans kraven, eftersom den första övertonens(100 Hz) komponent undviks i några av kondensatorerna, såsom de är laddas och urladdasav en bi-fas ström i stället för en enda-fas ett. Vidare, lägre ledningsförluster förväntasgenom att reducera antalet enheter i ledningsvågen.Layouten och drift av den nya omvandlaren beskrivs i denna avhandling. En Simulinkmodell från ABB har modifierats för att tillfredsställa den nya topologin. De teoretiskafördelarna med det föreslagna omvandlare topologi stöds av simuleringsresultat i Matlab-Simulink. I synnerhet, är det visas en 50 % av negativ sekvens kapacitet utan noll sekvenskomponent injektion. Den totala kapacitansen hos omvandlaren kan minskas på ett 30 %jämfört med den delta Chain-Link Modular Multilevel Converter, som är den föredragnatopologin på marknaden idag. Vidare är förlusterna hålls ganska låg om SiC halvledareanvänds.Å andra sidan, kräver den föreslagna topologi användningen av dubbelriktade omkopplareatt göra kommuteringen och möjliggöra utbytet av energi mellan faserna. Enfördjupad analys av kommuteringsförloppet visas i slutet av denna avhandling, slutsatsenatt Bi-directional Controlled Tyristors skulle vara en lovande lösning för topologin.

Using the methodological approach of Socio-rhetorical Analysis, this study focuses on understanding the phrase in 1 John 3:8, “the works of the devil,” from the standpoint of the original audience. A comprehensive investigation of this phrase contributes toward theological discourse about the Johannine understanding of the devil/evil and cosmic conflict. By juxtaposing the results of a number of temporarily bounded studies, the meaning of the phrase, “the works of the devil,” is seen in its historical, cultural, and literary context. The literary context of the phrase under investigation involves two pericopes at the center of 1 John: 3:4-10, and 3:11-18, where the author’s cosmic eschatological theology is presented in a chiastic climax. Inner texture analysis of these pericopes reveals complex rhetorical transitions that focus attention on the destruction of the works of the devil. Repetitive-progressive texture charts and discourse analysis of these pericopes uncover the key terms and relationships of these terms, contributing toward an understanding of the meaning of the phrase, “the works of the devil.” Scribal inter-texture analysis compares the use of these terms in other biblical and extra-biblical literature, including an original analysis of 1QS 4:15-25. In short, the works of the devil, according to 1 John and the Gospel of John, supplemented by historical evidence of ancient culture and writings, would have been seen by early Johannine believers as equated with that which leads to death. Examples show that this could be physical death, as in the example of Cain, or of disease, or spiritual death, as in the example of idols which represent unbelief, evil work, false approaches to God, and disobedience to God’s commands. While the devil’s works can be summarized as bringing death—both physical (disease and deformity, social chaos, mental chaos) and spiritual (unbelief, hatred),the Son of God appeared to give life (1 John 4:9). The appearing of the Son of God is seen to result in works and characteristics that are the opposite of those associated with the sin of the devil, thus nullifying or destroying them. / Christian Spirituality Church History and Missiology / D. Litt et Phil. (Biblical Studies)

Using the methodological approach of Socio-rhetorical Analysis, this study focuses on understanding the phrase in 1 John 3:8, “the works of the devil,” from the standpoint of the original audience. A comprehensive investigation of this phrase contributes toward theological discourse about the Johannine understanding of the devil/evil and cosmic conflict. By juxtaposing the results of a number of temporarily bounded studies, the meaning of the phrase, “the works of the devil,” is seen in its historical, cultural, and literary context. The literary context of the phrase under investigation involves two pericopes at the center of 1 John: 3:4-10, and 3:11-18, where the author’s cosmic eschatological theology is presented in a chiastic climax. Inner texture analysis of these pericopes reveals complex rhetorical transitions that focus attention on the destruction of the works of the devil. Repetitive-progressive texture charts and discourse analysis of these pericopes uncover the key terms and relationships of these terms, contributing toward an understanding of the meaning of the phrase, “the works of the devil.” Scribal inter-texture analysis compares the use of these terms in other biblical and extra-biblical literature, including an original analysis of 1QS 4:15-25. In short, the works of the devil, according to 1 John and the Gospel of John, supplemented by historical evidence of ancient culture and writings, would have been seen by early Johannine believers as equated with that which leads to death. Examples show that this could be physical death, as in the example of Cain, or of disease, or spiritual death, as in the example of idols which represent unbelief, evil work, false approaches to God, and disobedience to God’s commands. While the devil’s works can be summarized as bringing death—both physical (disease and deformity, social chaos, mental chaos) and spiritual (unbelief, hatred),the Son of God appeared to give life (1 John 4:9). The appearing of the Son of God is seen to result in works and characteristics that are the opposite of those associated with the sin of the devil, thus nullifying or destroying them. / Christian Spirituality Church History and Missiology / D. Litt et Phil. (Biblical Studies)