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A new class of hybrid AC/AC direct power converters
Presentation / Conference Contribution
Klumpner, C., Wijekoon, T., & Wheeler, P. A new class of hybrid AC/AC direct power converters. Presented at 2005 IEEE Industry Applications Society Annual Meeting

Variable voltage and variable frequency conversion of electrical energy from an AC source to an AC load is done in traditional power converters via a DC-link where an energy storage element (electrolytic capacitors) is situated. Despite its well-know... Read More about A new class of hybrid AC/AC direct power converters.

A hybrid indirect matrix converter immune to unbalanced voltage supply, with reduced switching losses and improved voltage transfer ratio
Presentation / Conference Contribution
Klumpner, C. A hybrid indirect matrix converter immune to unbalanced voltage supply, with reduced switching losses and improved voltage transfer ratio. Presented at 2006 IEEE Applied Power Electronics Conference and Exposition (APEC 2006)

Achieving a compact and efficient design of power electronic converters is not a straightforward procedure: minimizing the size of the filter requires a higher switching frequency that causes additional switching losses that will require a larger hea... Read More about A hybrid indirect matrix converter immune to unbalanced voltage supply, with reduced switching losses and improved voltage transfer ratio.

A new two-stage voltage source inverter with modulated DC-link voltage and reduced switching losses
Presentation / Conference Contribution
Klumpner, C. A new two-stage voltage source inverter with modulated DC-link voltage and reduced switching losses. Presented at 32nd Annual Conference of IEEE Industrial Electronics Society (IECON 2006)

This paper proposes a new DC/AC power converter topology that is obtained by merging a buck type DC/DC converter and a DC/AC three-phase PWM Voltage Source Inverter (VSI) without the need of the passive components (smoothing inductor and capacitance)... Read More about A new two-stage voltage source inverter with modulated DC-link voltage and reduced switching losses.

A new hybrid cycloconverter with smooth output voltage generation capability and accurate control of the circulating current
Presentation / Conference Contribution
Klumpner, C., Xu, T., & Clare, J. A new hybrid cycloconverter with smooth output voltage generation capability and accurate control of the circulating current. Presented at 32nd Annual Conference of IEEE Industrial Electronics (IECON 2006)

Nowadays, power electronic converters based exclusively on IGBTs deliver excellent load side performance up to megawatt powers in the low voltage range (200-690V) and are steadily gaining performance in the medium voltage range as well. However, the... Read More about A new hybrid cycloconverter with smooth output voltage generation capability and accurate control of the circulating current.

Reforming the public sector: personalised activation services in the UK
Book Chapter
Stafford, B., & Kellard, K. Reforming the public sector: personalised activation services in the UK. In R. van Berkel, & B. Valkenburg (Eds.), Making it Personal: Individualising activation services in the EU. Policy Press

This paper highlights the degree of flexibility and personalisation in the UK’s welfare to work programmes. The Labour Government’s New Deals as originally designed were meant to provide personalised and tailor-made services and to meet the needs of... Read More about Reforming the public sector: personalised activation services in the UK.

A new three-level indirect matrix converter with reduced number of switches
Presentation / Conference Contribution
Klumpner, C., Lee, M. Y., Pitic, C., Wheeler, P., & Zanchetta, P. A new three-level indirect matrix converter with reduced number of switches. Presented at IEEE-IAS 2007 Annual Meeting

Matrix converters are sine wave in/out forced commutated single-stage AC/AC direct frequency changers using a single bi-directional switch to connect any input to any output. Indirect two-stage matrix converters provide similar input and output perfo... Read More about A new three-level indirect matrix converter with reduced number of switches.

A new single-stage current source inverter for photovoltaic and fuel cell applications using reverse blocking IGBTs
Presentation / Conference Contribution
Klumpner, C. A new single-stage current source inverter for photovoltaic and fuel cell applications using reverse blocking IGBTs. Presented at 2007 IEEE Power Electronics Specialists Conference (PESC 2007)

Renewable energy sources such as photovoltaics (PVs) or fuel cells (FCs) are not fitted for direct power grid connection because they deliver DC voltage and current. This is why a power electronic interface is needed, consisting usually of a current-... Read More about A new single-stage current source inverter for photovoltaic and fuel cell applications using reverse blocking IGBTs.

Investigation of strategic capacity issues in the aerospace sector
Book
Wang, K., Buxton, D., Farr, R., & MacCarthy, B. Investigation of strategic capacity issues in the aerospace sector. VIVACE project consortium

The business environment is changing fast and radically. Traditional capacity planning has limitations in today’s dynamic environments, particularly from a strategic perspective in the aerospace sector. This document sets out to identify the unique c... Read More about Investigation of strategic capacity issues in the aerospace sector.

Inclusion, Participation and the Emergence of British Chinese Websites
Journal Article
Parker, D., & Song, M. Inclusion, Participation and the Emergence of British Chinese Websites. Journal of Ethnic and Migration Studies, 33(7),

Previous work has drawn attention to the relative absence of British Chinese voices in
public culture. No one is more aware of this invisibility than British-born Chinese people
themselves. Since 2000 the emergence of Internet discussion sites prod... Read More about Inclusion, Participation and the Emergence of British Chinese Websites.

Don’t expect me to vote for you just because I like you, even if you do make me feel warm inside: a comparison of the validity of non-ipsative measures of party support
Presentation / Conference Contribution
van der Eijk, C., & Marsh, M. Don’t expect me to vote for you just because I like you, even if you do make me feel warm inside: a comparison of the validity of non-ipsative measures of party support. Presented at Annual Meeting of the American Political Science Association, Chicago, 29 August - 1 September 2007

The inclusion of non-ipsative measures of party preference (in essence ratings for each of the parties of a political system) has become established practice in mass surveys
conducted for election studies. They exist in different forms, known as the... Read More about Don’t expect me to vote for you just because I like you, even if you do make me feel warm inside: a comparison of the validity of non-ipsative measures of party support.

Fractured families--united countries?: family, nostalgia and nationbuilding in Das Wunder von Bern and Goodbye Lenin!
Journal Article
Uecker, M. Fractured families--united countries?: family, nostalgia and nationbuilding in Das Wunder von Bern and Goodbye Lenin!. New Cinemas, 5(3), https://doi.org/10.1386/ncin.5.3.189_1

The article compares the role and construction of nostalgia in two of the most successful German films released in 2003, Das Wunder von Bern and Goodbye Lenin!. While both films portray a close connection between male adolescence, incomplete families... Read More about Fractured families--united countries?: family, nostalgia and nationbuilding in Das Wunder von Bern and Goodbye Lenin!.

Global Expressivism: language agency without semantics, reality without metaphysics
Book
Barker, S. J. Global Expressivism: language agency without semantics, reality without metaphysics. (submitted to) Oxford University Press. Manuscript submitted for publication

There is a wide-spread belief amongst theorists of mind and language. This is that in order to understand the relation between language, thought, and reality we need a theory of meaning and content, that is, a normative, formal science of meaning, wh... Read More about Global Expressivism: language agency without semantics, reality without metaphysics.

Gender and East Asian Welfare States: from Confucianism to Gender Equality
Presentation / Conference Contribution
Pascall, G., & Sung, S. Gender and East Asian Welfare States: from Confucianism to Gender Equality. Presented at Fourth Annual East Asian Social Policy Research Network (EASP)

How can we understand the gender logic underpinning the welfare states/systems of East Asia? Does the comparative literature, which has largely been concerned with western
Welfare states, whether in The Three Worlds of Welfare Capitalism (Esping-And... Read More about Gender and East Asian Welfare States: from Confucianism to Gender Equality.

What Pedro could do
Book
Woodard, C. (2007). What Pedro could do. University of Nottingham

This paper discusses Bernard Williams's famous case of Jim and the Indians. It contrasts two ways of diagnosing the alleged errors of Act Utilitarianism in considering this case. One approach suggests that Act Utilitarianism fails to appreciate the i... Read More about What Pedro could do.

"Ordinary people only": knowledge, representativeness and the publics of public participation in healthcare
Journal Article
Martin, G. P. "Ordinary people only": knowledge, representativeness and the publics of public participation in healthcare. Sociology of Health and Illness, 30(1),

Public involvement in healthcare is a prominent policy in countries across the economically developed world. A growing body of academic literature has focused on public participation, often presenting dichotomies between good and bad practice: betwe... Read More about "Ordinary people only": knowledge, representativeness and the publics of public participation in healthcare.

A two-stage power converter for welding applications with increased efficiency and reduced filtering
Presentation / Conference Contribution
Klumpner, C., & Corbridge, M. (in press). A two-stage power converter for welding applications with increased efficiency and reduced filtering. In 2008 IEEE International Symposium on Industrial Electronics. https://doi.org/10.1109/ISIE.2008.4677248

The power supply technology used in welding applications changed dramatically from manually tap-controlled 50Hz bulky transformers which had large leakage inductance to provide stable arc burn to switch-mode fast controlled highfrequency power electr... Read More about A two-stage power converter for welding applications with increased efficiency and reduced filtering.