All Outputs (132)

Estimating current derivatives for sensorless motor drive applications (2015)
Conference Proceeding
Hind, D. M., Sumner, M., & Gerada, C. (2015). Estimating current derivatives for sensorless motor drive applications.

The PWM current derivative technique for sensorless control of AC machines requires current derivative measurements under certain PWM vectors. This is often not possible under narrow PWM vectors due to high frequency (HF) oscillations which affect th... Read More about Estimating current derivatives for sensorless motor drive applications.

A novel stochastic modelling approach for electric vehicle charging power and energy requirements (2015)
Conference Proceeding
Fazeli, A., Johnson, C. M., Sumner, M., & Christopher, E. (2015). A novel stochastic modelling approach for electric vehicle charging power and energy requirements.

Electrification of heat and transport in addition to integration of intermittent renewable resources into the existing electricity network is expected to occur in near future. Such a transformation is expected to force the operation of the electricit... Read More about A novel stochastic modelling approach for electric vehicle charging power and energy requirements.

Investigating the impact of varying the number of distributed energy resources on controlling the power flow within a microgrid (2015)
Conference Proceeding
Fazeli, A., Sumner, M., Johnson, C. M., & Christopher, E. (2015). Investigating the impact of varying the number of distributed energy resources on controlling the power flow within a microgrid.

The electrification of heat and transport in addition to integration of intermittent renewable resources into the existing electricity network is expected to occur in near future. Such a transformation is expected to force the operation of the electr... Read More about Investigating the impact of varying the number of distributed energy resources on controlling the power flow within a microgrid.

Impedance sensitive STATCOM control for systems supported by renewable generation (2014)
Conference Proceeding
Rose, C. J., Sumner, M., Thomas, D. W., & Christopher, E. (in press). Impedance sensitive STATCOM control for systems supported by renewable generation.

Reactive power control is known to be an effective means of controlling voltage; however, for optimal performance, the system reactance must be known. Power systems with high re-newable energy penetration have been known to have voltage stability iss... Read More about Impedance sensitive STATCOM control for systems supported by renewable generation.

Marine power distribution system fault location using a portable injection unit (2014)
Journal Article
Jia, K., Bi, T., Liu, B., Christopher, E., Thomas, D. W., & Sumner, M. (2015). Marine power distribution system fault location using a portable injection unit. IEEE Transactions on Power Delivery, 30(2), https://doi.org/10.1109/TPWRD.2014.2364259

A portable injection unit for Active Impedance Estimation (AIE) is built and tested in a DC zonal marine power distribution system to provide useful information for system protection and restoration. The portable unit generates current “spikes” and i... Read More about Marine power distribution system fault location using a portable injection unit.

Method of efficiently predicting the conducted emissions of multiple VSCs (2014)
Conference Proceeding
Ivry, P. M., Oke, O., Thomas, D. W., & Sumner, M. (in press). Method of efficiently predicting the conducted emissions of multiple VSCs.

Various types of power converters including Voltage Source Converters (VSCs) have been known to produce conducted emissions. The net effect of simultaneously operating multiple VSCs is non-linear and this makes the prediction of the emission level mo... Read More about Method of efficiently predicting the conducted emissions of multiple VSCs.

Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers (2014)
Conference Proceeding
Rawa, M., Thomas, D. W., & Sumner, M. (in press). Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers.

The penetration of nonlinear loads on power systems increases distortion levels and can cause severe problems to power systems. Many factors affect the degree of generated harmonics including the background voltage distortion and percentage of nonlin... Read More about Background voltage distortion and percentage of nonlinear load impacts on the harmonics produced by a group of personal computers.

Power flow control for power and voltage management in future smart energy communities (2014)
Conference Proceeding
Fazeli, A., Sumner, M., Christopher, E., & Johnson, C. M. (2014). Power flow control for power and voltage management in future smart energy communities.

The Community Power Flow Control (CPFC) Algorithm has been proposed as a technique for managing electrical power and energy within small communities. The CPFC manages the resources in the community (DSM, energy storage, RES) in order to control the c... Read More about Power flow control for power and voltage management in future smart energy communities.

Real time parameter estimation for power quality control and intelligent protection of grid-connected power electronic converters (2014)
Journal Article
Sumner, M., Abusorrah, A., Thomas, D. W., & Zanchetta, P. (2014). Real time parameter estimation for power quality control and intelligent protection of grid-connected power electronic converters. IEEE Transactions on Smart Grid, 5(4), https://doi.org/10.1109/TSG.2014.2298495

This paper presents a method to identify power system impedance in real-time using signals obtained from grid- connected power electronic converters. The proposed impedance estimation has potential applications in renewable/distributed energy systems... Read More about Real time parameter estimation for power quality control and intelligent protection of grid-connected power electronic converters.

Intelligent impedance based fault-location for zonal power systems (2014)
Conference Proceeding
Rose, C. J., Thomas, D. W., Sumner, M., Christopher, E., & Lopez Arevalo, S. (2014). Intelligent impedance based fault-location for zonal power systems.

A laboratory based demonstrator has been constructed to study the Active Impedance Estimation (AIE) technique as a means of locating faults on a power system. The demonstrator has been used to verify results from simulation experimentally. The AIE sy... Read More about Intelligent impedance based fault-location for zonal power systems.

Advanced DC zonal marine power system protection (2014)
Journal Article
Jia, K., Christopher, E., Thomas, D. W., & Sumner, M. (2014). Advanced DC zonal marine power system protection. IET Generation, Transmission and Distribution, 8(2), https://doi.org/10.1049/iet-gtd.2013.0139

A new Active Impedance Estimation (AIE) based protection strategy which is suitable for utilization in a DC zonal marine power distribution system is presented. This method uses two triangular current "spikes" injections for system impedance estimati... Read More about Advanced DC zonal marine power system protection.

Mathematical analysis of the equivalent impedance at the harmonic frequency for the proposed aircraft power system (2013)
Journal Article
Zhou, Q., Sumner, M., & Thomas, D. (2013). Mathematical analysis of the equivalent impedance at the harmonic frequency for the proposed aircraft power system. IET Electrical Systems in Transportation, 3(4), https://doi.org/10.1049/iet-est.2011.0056

The proposals for the `More Electric Aircraft' place a significant, increased demand on the electrical power distribution system. To increase safety and reduce aircraft maintenance times on the ground, there is a greater need to quickly identify and... Read More about Mathematical analysis of the equivalent impedance at the harmonic frequency for the proposed aircraft power system.