Engineering: Presentations and Public Lectures
Permanent URI for this collection
Browse
Recent Submissions
Item Embargo Electric Vehicle Supply Equipment (EVSE) Charging Efficiency Evaluation(2023) Silva Thotabaddadurage, Dr. SadeeshvaraIn 2015, the Paris Agreement on climate change announced a comprehensive and rapid decarbonization of all economic sectors to below the threshold of 1.5 °C of global warming. Supporting this transitioning to net-zero emissions, Aotearoa New Zealand has identified the opportunity of a more productive, sustainable and inclusive economy. This includes a nearterm target of 100% renewable electricity by 2035, and a clean carbon-neutral economy by 2050. In achieving long-term goals, decarbonisation of the transport sector is a major requirement, as over 21% of New Zealand’s carbon footprint originates from light vehicle fleet. Hence, the government has recommended phasing out imports of fossil-fuelled cars by 2035, and promoted the adaptation of electric vehicles. This paper presents an efficiency evaluation of a range of typical electric vehicle chargers used in New Zealand, and predicts efficiency improving methods that can be adopted in future EV infrastructure. Efficiency measurements of 8 EV chargers (4 DC fast chargers and 4 AC home chargers) have been carried out during this study with a special emphasis on input/output power variations throughout the charging cycle. Additionally, charge profiles of common EVs found in NZ were studied, under both AC and DC fast charging. DC charger efficiency varied between exemplar charges, and was found to fall well below state-of-the-art power converter efficiencies. Conversely, AC EVSE demonstrated greater levels of performance with over 99% efficiencies regardless of charger type and power rating.Item Open Access Engineering innovation and the creation of lasting value(2005) Cormack, L. G.Item Open Access Energy planning for New Zealand(2004) Hodgson, PeteItem Open Access Energy planning in New Zealand : Hopkins Lecture, 25th May 1979(1979) Duncan, W. M.Item Open Access Consulting engineering : serious fun(2002) Hopkins, David ConwayItem Open Access The economy and energy: are both sustainable?(2006) Elder, DonItem Open Access Structural reliability, safety and the community(1987) Flint, Anthony RayThe topic of matching strucrural reliability to the needs and behaviour of the community which I intend to discuss is one which deserves continuing debate and which I believe would have appealed to Professor Hopkins. It is a subject which needs to be addressed by the profession if we are to continue to make progress with economy in use of resources and yet with innovation. It is also one seldom rationally considered by society as a whole and fraught with misconceptions and woolly thinking.Item Open Access Item Open Access Politics and passions : adventures in engineering : Hopkins Lecture 1986(1986) Norman, Robert GeorgeItem Open Access Item Open Access Inaugural Hopkins Lecture, 31 May 1978(1978) Hopkins, Henry JamesItem Open Access International law and the global environmental challenge : Hopkins Lecture, Christchurch Town Hall, 6 July 1994(1994) Palmer, Geoffrey W. R.Item Open Access Consulting engineering here and abroad(1988) Carter, Ron P.Item Open Access Environmental challenges in the 1990s(1991) Blakeley, Roger W. G.Item Open Access Cities at risk : the 1985 Hopkins Lecture, Limes Room, Christchurch Town Hall, 17 July 1985(1985) Fowler, MichaelItem Open Access Building primitive but effective structures in remote areas(1992) Hillary, EdmundItem Open Access Urban Forests: Critical in a Changing Climate(2022) Morgenroth J; morgenroth, justinItem Open Access Research Highlights 2021-22 Wireless Research Centre University of Canterbury(2022) Woodward, GraemeItem Open Access Drawing well-spread samples from spatial populations(2022) McDonald T; Brown J; Price C; Robertson, BlairItem Open Access Developing & evaluating emergency response training with Virtual Reality(2022) Clifford R; Hoermann, Simon