All Outputs (21)

A Framework for Optimization of Hybrid Aircraft (2019)
Presentation / Conference Contribution
Zhao, X., Sahoo, S., Kyprianidis, K., Sumsurooah, S., Valente, G., Rashed, M., Vakil, G., Hill, C. I., Jacob, C., Gobbin, A., Bardenhagen, A., Prölss, K., Sielemann, M., Rantzer, J., & Ekstedt, E. (2019, June). A Framework for Optimization of Hybrid Aircraft. Presented at ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, Phoenix, Arizona, USA

To achieve the goals of substantial improvements in efficiency and emissions set by Flightpath 2050, fundamentally different concepts are required. As one of the most promising solutions, electrification of the aircraft primary propulsion is currentl... Read More about A Framework for Optimization of Hybrid Aircraft.

Design of more electric aircraft dc power distribution architectures considering reliability performance (2019)
Presentation / Conference Contribution
Recalde, A. A., Bozhko, S., Atkin, J., & Hill, C. (2019, August). Design of more electric aircraft dc power distribution architectures considering reliability performance. Presented at AIAA Propulsion and Energy Forum and Exposition, 2019, Indiana, USA

© 2019 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved. The More Electric Aircraft (MEA) concept has started to define the future of aircraft electrification. The electrical system will certainly play a crucial rol... Read More about Design of more electric aircraft dc power distribution architectures considering reliability performance.

Implementation of an Advanced Modelica Library for Evaluation of Inverter Loss Modeling (2019)
Presentation / Conference Contribution
Lai, S. C., Ian Hill, C., & Suchato, N. (2019, February). Implementation of an Advanced Modelica Library for Evaluation of Inverter Loss Modeling. Presented at 2019 IEEE Texas Power and Energy Conference, TPEC 2019, College Station, Texas, USA

This paper introduces a newly developed Power Electronic Inverter library in Modelica. The library has different levels of complexity to approximate the power losses in the power inverter. In addition, it provides two different modelling domains (ABC... Read More about Implementation of an Advanced Modelica Library for Evaluation of Inverter Loss Modeling.

Finite state machine control for aircraft electrical distribution system (2019)
Journal Article
Spagnolo, C., Sumsurooah, S., Hill, C. I., & Bozhko, S. (2019). Finite state machine control for aircraft electrical distribution system. Journal of Engineering, 2018(13), 506-511. https://doi.org/10.1049/joe.2018.0039

This study deals with the development of new control logic for more electric aircraft (MEA) electrical power systems (EPSs). A key aspect of the MEA concept is that traditional pneumatic and hydraulic loads are replaced by electrical equivalents. The... Read More about Finite state machine control for aircraft electrical distribution system.

A reliability approach for the MEA power system architecture design optimization problem (2018)
Presentation / Conference Contribution
Recalde, A., Bozhko, S., Atkin, J., & Hill, C. (2018, November). A reliability approach for the MEA power system architecture design optimization problem. Presented at 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

In the literature, there has been thorough research on reliability-based design in different fields. However, aircraft power system investigations have mostly dealt with sub-system optimization. Hence, there is considerable potential to excel innova... Read More about A reliability approach for the MEA power system architecture design optimization problem.

Generator overload reduction using smart power management (2018)
Presentation / Conference Contribution
Spagnolo, C., Sumsurooah, S., Hill, C., & Bozhko, S. (2018, November). Generator overload reduction using smart power management. Presented at 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

Weight reduction is a key driver in the aerospace sector. Every kilogram of weight reduction has significant benefits over the aircraft’s life cycle. This paper introduces a smart power management technique which is able to reduce the overload on the... Read More about Generator overload reduction using smart power management.

Development of aircraft electric starter-generator system based-on active rectification technology (2018)
Journal Article
Bozhko, S., Yang, T., Le Peuvedic, J.-M., Arumugam, P., Degano, M., La Rocca, A., Xu, Z., Rashed, M., Fernando, W., Hill, C. I., Eastwick, C., Pickering, S., Gerada, C., & Wheeler, P. (2018). Development of aircraft electric starter-generator system based-on active rectification technology. IEEE Transactions on Transportation Electrification, 4(4), 985-996. https://doi.org/10.1109/TTE.2018.2863031

More-electric aircraft (MEA) has become a dominant trend for modern aircraft. On-board MEA, many functions, which are conventionally driven by pneumatic and hydraulic power, are replaced with electrical subsystems. Starting aircraft engines with an e... Read More about Development of aircraft electric starter-generator system based-on active rectification technology.

Adaptive Stabilization of Uncontrolled Rectifier Based AC–DC Power Systems Feeding Constant Power Loads (2017)
Journal Article
Areerak, K., Sopapirm, T., Bozhko, S., Hill, C. I., Suyapan, A., & Areerak, K. (2018). Adaptive Stabilization of Uncontrolled Rectifier Based AC–DC Power Systems Feeding Constant Power Loads. IEEE Transactions on Power Electronics, 33(10), 8927-8935. https://doi.org/10.1109/TPEL.2017.2779541

© 2017 IEEE. It is known that, when tightly regulated, actively controlled power converters behave as constant power loads (CPLs). These loads can significantly degrade the stability of their feeder system. The loop-cancelation technique has been est... Read More about Adaptive Stabilization of Uncontrolled Rectifier Based AC–DC Power Systems Feeding Constant Power Loads.

Assessment of torque ripple minimization techniques for aircraft switched reluctance machine starter/generator (2017)
Presentation / Conference Contribution
Ding, X., Rashed, M., Bozhko, S., & Hill, C. Assessment of torque ripple minimization techniques for aircraft switched reluctance machine starter/generator. Presented at 4th International Symposium on More Electric Aircraft Technology (MEA 2017)

This paper presents an assessment of different torque ripple minimization techniques for more electric aircraft Switched Reluctance Machine (SRM) starter/generator (S/G). SRM is one of the most popular potential candidates for future aircraft S/G. SR... Read More about Assessment of torque ripple minimization techniques for aircraft switched reluctance machine starter/generator.

Permanent magnet machine based starter-generator system with modulated model predictive control (2017)
Journal Article
Yeoh, S. S., Yang, T., Tariscotti, L., Hill, C. I., Bozhko, S., & Zanchetta, P. (in press). Permanent magnet machine based starter-generator system with modulated model predictive control. IEEE Transactions on Transportation Electrification, https://doi.org/10.1109/TTE.2017.2731626

The paper describes a hybrid control scheme for a permanent magnet machine based starter-generator (S/G) system. There has been increased usage of electric drive systems in the transportation sector for increased efficiency and reduced emissions. One... Read More about Permanent magnet machine based starter-generator system with modulated model predictive control.

Flux weakening control of electric starter-generator based on permanent-magnet machine (2017)
Journal Article
Bozhko, S., Rashed, M., Hill, C. I., Yeoh, S. S., & Yang, T. (2017). Flux weakening control of electric starter-generator based on permanent-magnet machine. IEEE Transactions on Transportation Electrification, 3(4), 864-877. https://doi.org/10.1109/TTE.2017.2718221

The paper presents control analysis and design for a Permanent Magnet Machine (PMM) operated in Flux-Weakening (FW) mode for an aircraft electric starter-generator application. Previous literature has focused on FW control of PMMs in motoring (starti... Read More about Flux weakening control of electric starter-generator based on permanent-magnet machine.

DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters (2017)
Journal Article
Shen, L., Bozhko, S., Hill, C. I., & Wheeler, P. (2018). DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters. IEEE Transactions on Power Electronics, 33(4), 3567-3574. https://doi.org/10.1109/TPEL.2017.2706972

© 1986-2012 IEEE. This paper proposes an active switching harmonic current reduction method within the dc-link capacitor of two-level, three-phase, back-to-back converters. This method is based on the derived analytical solution for switching harmoni... Read More about DC-Link Capacitor Second Carrier Band Switching Harmonic Current Reduction in Two-Level Back-to-Back Converters.

Analytical modelling approach for switched reluctance machines with deep saturation (2016)
Presentation / Conference Contribution
Ding, X., Rashed, M., Hill, C. I., & Bozhko, S. (2016, November). Analytical modelling approach for switched reluctance machines with deep saturation. Presented at 2016 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), Toulouse, France

This paper presents an analytical modelling approach for Switched Reluctance Machines (SRMs) with a wide saturation range. There are many existing analytical modelling approaches in literature that give good accuracy, however most do not consider mod... Read More about Analytical modelling approach for switched reluctance machines with deep saturation.

Flux weakening control of Permanent Magnet Machine based aircraft electric starter-generator (2016)
Presentation / Conference Contribution
Bozhko, S., Rashed, M., Yeoh, S. S., Yang, T., & Hill, C. I. Flux weakening control of Permanent Magnet Machine based aircraft electric starter-generator. Presented at Power Electronics, Machines and Drives 2016 (PEMD 2016)

This paper presents control analysis and design for an aircraft electric starter-generator system based on a Permanent Magnet Machine (PMM) operated in Flux-Weakening mode (FW). The focus is on detailed stability analysis which helped to discover an... Read More about Flux weakening control of Permanent Magnet Machine based aircraft electric starter-generator.

Stability assessment of a high speed permanent magnet machine based aircraft electrical power system (2016)
Presentation / Conference Contribution
Gao, F., Yeoh, S. S., Hill, C. I., Yang, T., & Bozhko, S. Stability assessment of a high speed permanent magnet machine based aircraft electrical power system. Presented at 18th European Conference on Power Electronics and Applications

Starting an aircraft engine with an electrical machine has been one of the major trends for future aircraft. This paper studies the stability of a permanent-magnet machine (PMM) based aircraft starter/generator (S/G) system. Using control-to-output t... Read More about Stability assessment of a high speed permanent magnet machine based aircraft electrical power system.

Comparative stability analysis of droop control approaches in voltage-source-converter-based DC microgrids (2016)
Journal Article
Gao, F., Bozhko, S., Costabeber, A., Patel, C., Wheeler, P., Hill, C. I., & Asher, G. (in press). Comparative stability analysis of droop control approaches in voltage-source-converter-based DC microgrids. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2016.2567780

Droop control has been widely applied in DC microgrids (MGs) due to its inherent modularity and ease of implementation. Among the different droop control methods that can be adopted in DC MGs, two options have been considered in this paper; I-V and V... Read More about Comparative stability analysis of droop control approaches in voltage-source-converter-based DC microgrids.

Dynamic phasor modelling of multi-generator variable frequency electrical power systems (2015)
Journal Article
Yang, T., Bozhko, S., Le-Peuvedic, J.-M., Asher, G., & Hill, C. I. (2016). Dynamic phasor modelling of multi-generator variable frequency electrical power systems. IEEE Transactions on Power Systems, 31(1), 563-571. https://doi.org/10.1109/TPWRS.2015.2399371

The Dynamic Phasor (DP) concept has been widely used in modelling electrical power systems. So far, the DP concept has been restricted to modelling systems with one single electrical source at a fixed fundamental frequency; either one generator or an... Read More about Dynamic phasor modelling of multi-generator variable frequency electrical power systems.

Implementation of a Modelica library for simulation of electromechanical actuators for aircraft and helicopters (2014)
Presentation / Conference Contribution
Linden, F. V. D., Schlegel, C., Christmann, M., Regula, G., Hill, C. I., Giangrande, P., Maré, J.-C., & Egaña, I. Implementation of a Modelica library for simulation of electromechanical actuators for aircraft and helicopters. Presented at 10th International Modelica Conference

The goal of the A2015 library presented in this paper is to develop a Modelica based, tool-independent standard for electromechanical actuators (EMA). This will contribute to the establishment of a “common language” throughout the development of EMAs... Read More about Implementation of a Modelica library for simulation of electromechanical actuators for aircraft and helicopters.

Modal analysis of a PMSG-based DC electrical power system in the more electric aircraft using eigenvalues sensitivity
Journal Article
Gao, F., Zheng, X., Bozhko, S., Hill, C. I., & Asher, G. (in press). Modal analysis of a PMSG-based DC electrical power system in the more electric aircraft using eigenvalues sensitivity. IEEE Transactions on Transportation Electrification, 1(1), https://doi.org/10.1109/TTE.2015.2427312

This paper deals with the modeling and small signal stability analysis of a DC-distribution electrical power system (EPS) sourced by a permanent magnet synchronous generator (PMSG). The topology employed here is one of the main candidates for future... Read More about Modal analysis of a PMSG-based DC electrical power system in the more electric aircraft using eigenvalues sensitivity.

More electric aircraft starter-generator system with utilization of hybrid modulated model predictive control
Presentation / Conference Contribution
Yoeh, S. S., Yang, T., Tarisciotti, L., Hill, C. I., & Bozhko, S. More electric aircraft starter-generator system with utilization of hybrid modulated model predictive control. Presented at International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and the International Transportation Electrification Conference (ESARS ITEC 2016)

The current trend for future aircraft is the adoption of the More Electric Aircraft (MEA) concept. The electrical based starter-generator (S/G) system is one of the core ideas from the MEA concept. The PI based control scheme has been investigated in... Read More about More electric aircraft starter-generator system with utilization of hybrid modulated model predictive control.