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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 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 more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications
Presentation / Conference Contribution
Klumpner, C., Chonlatee, P., & Wheeler, P. A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications. Presented at Power Electronics and Inteligent Motion (PCIM) 2009 (ISBN: 978-3-8007-3158-9)

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. In addition, they also have a high internal resistance/nonlinear V/I dependence, whi... Read More about A more efficient current source inverter with series connected AC capacitors for photovoltaic and fuel cell applications.

A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability
Presentation / Conference Contribution
Photong, C., Klumpner, C., & Wheeler, P. A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability. Presented at 35th Annual Conference of IEEE Industrial Electronics (IECON 2009)

The current source inverter (CSI) is preferred to interface a renewable source such photovoltaics (PV) to the AC power grid because it can provide smooth current source in the DC side, which fits to the PV behaviour and also steps-up the voltage from... Read More about A current source inverter with series connected AC capacitors for photovoltaic application with grid fault ride through capability.

Integrated output filter inductor for permanent magnet motor drives
Presentation / Conference Contribution
Raza Khowja, M., Gerada, C., Vakil, G., Wheeler, P., & Patel, C. Integrated output filter inductor for permanent magnet motor drives. Presented at IECON 2016

This paper presents a novel approach to integrate the output filter inductor in permanent magnet synchronous motor (PMSM) drive system. The integrated output filter inductor is based on utilizing the motor magnetics as a filter inductance instead of... Read More about Integrated output filter inductor for permanent magnet motor drives.