Picture of boy being examining by doctor at a tuberculosis sanatorium

Understanding our future through Open Access research about our past...

Strathprints makes available scholarly Open Access content by researchers in the Centre for the Social History of Health & Healthcare (CSHHH), based within the School of Humanities, and considered Scotland's leading centre for the history of health and medicine.

Research at CSHHH explores the modern world since 1800 in locations as diverse as the UK, Asia, Africa, North America, and Europe. Areas of specialism include contraception and sexuality; family health and medical services; occupational health and medicine; disability; the history of psychiatry; conflict and warfare; and, drugs, pharmaceuticals and intoxicants.

Explore the Open Access research of the Centre for the Social History of Health and Healthcare. Or explore all of Strathclyde's Open Access research...

Image: Heart of England NHS Foundation Trust. Wellcome Collection - CC-BY.

Easing future low voltage congestion with AC chopper voltage regulator

Connor, Gordon and Jones, Catherine and Finney, Stephen (2014) Easing future low voltage congestion with AC chopper voltage regulator. In: 7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014, 2014-04-08 - 2014-04-10.

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Future urban distribution networks are likely to become overloaded, resulting in serious faults, due to a predicted increase in clean energy technologies such as heat pump boilers and electric vehicles. This will significantly increase demand by up to double the present demand levels. As a result, unless changes are made to the low voltage (LV) urban distribution network it will be over-stressed in the future. A possible solution to increase the capacity of the LV distribution network is to use Point of Use Voltage Regulation (PUVR); which increases the line-to-line distribution voltage from 415V to 600V. A key advantage of PUVR is that the present conductors do not need to be replaced, which can be expensive and prohibitive in an urban environment. However, when the 600V supply is received at the end-user it will need to be converted from 345V phase to 230V phase in order to be useable. This can be achieved with a power electronics converter. This paper will discuss two possible converter topologies for this application: the back to back inverter and the AC chopper. To make PUVR as attractive an option as possible the most cost-effective and efficient topology the AC chopper was investigated via creation of a hardware prototype. The AC chopper was found to generate a loss of 1.6% to 2% at an input voltage of 200V peak