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Performance Analysis of PMSM for High-Speed Starter-Generator System (2018)
Conference Proceeding
Diab, A., Gerada, C., Rashed, M., Bozhko, S., & Li, J. (2018). Performance Analysis of PMSM for High-Speed Starter-Generator System. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-7). https://doi.org/10.1109/ESARS-ITEC.2018.8607764

© 2018 IEEE. This paper presents the operating characteristics of surface-mounted permanent magnet synchronous machine taking into account the influence of stator resistance and inductance variation at high frequencies, whose effect are always neglec... Read More about Performance Analysis of PMSM for High-Speed Starter-Generator System.

Direct vector control of induction motors based on rotor resistance-invariant rotor flux observer (2018)
Conference Proceeding
Bozhko, S., Kovbasa, S., Nikonenko, Y., & Peresada, S. (2018). Direct vector control of induction motors based on rotor resistance-invariant rotor flux observer. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/ESARS-ITEC.2018.8607640

A novel speed-flux tracking controller for induction motors has been developed and experimentally verified. Direct rotor flux field oriented controller is designed for current-fed induction motor model on the base of full order hybrid continuous time... Read More about Direct vector control of induction motors based on rotor resistance-invariant rotor flux observer.

Comparative Study Of Back EMF Based Sensorless Control Methods For Dual Three-Phase PMSM (2018)
Conference Proceeding
Fan, L., Yang, T., Rashed, M., & Bozhko, S. (2018). Comparative Study Of Back EMF Based Sensorless Control Methods For Dual Three-Phase PMSM. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/esars-itec.2018.8607439

Multiphase electrical machines have gained increased attentions recently due to its fault tolerance capability which is of great importance for more-electric aircraft application. This paper studies sensorless control of a high-speed dual three-phase... Read More about Comparative Study Of Back EMF Based Sensorless Control Methods For Dual Three-Phase PMSM.

A Review of Torque Ripple Minimization Techniques in Switched Reluctance Machine (2018)
Conference Proceeding
Velmurugan, G., Bozhko, S., & Yang, T. (2018). A Review of Torque Ripple Minimization Techniques in Switched Reluctance Machine. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/ESARS-ITEC.2018.8607614

Torque ripple is a major problem in Switched Reluctance Machine (SRM). Despite the high torque ripple and vibration, SRM has many advantages over many other machines. In this paper, the torque ripple minimization control techniques commonly used are... Read More about A Review of Torque Ripple Minimization Techniques in Switched Reluctance Machine.

An Enhanced Power Generation Centre for More Electric Aircraft Applications (2018)
Conference Proceeding
Lang, X., Yang, T., Enalou, H. B., Bozhko, S., & Wheeler, P. (2018). An Enhanced Power Generation Centre for More Electric Aircraft Applications. In Proceedings - 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) (1-6). https://doi.org/10.1109/esars-itec.2018.8607688

© 2018 IEEE. The more-electric aircraft (MEA) concept has become a major trend due to its multiple advantages. Many functions which are conventionally driven by pneumatic, hydraulic and mechanical power systems are replaced by electrical ones onboard... Read More about An Enhanced Power Generation Centre for More Electric Aircraft Applications.

Experimental study of power exchange using a twin spool engine emulator (2018)
Conference Proceeding
Enalou, H. B., Rashed, M., Kulsangcharoen, P., Chowdhury, S., & Bozhko, S. (2018). Experimental study of power exchange using a twin spool engine emulator

The More Electric Aircraft (MEA) nad , with electrical machines on both HP and LP shafts and the advancements in power electronics, makes it possible to transfer power electrically from one spool to another. Preliminary results have shown considerabl... Read More about Experimental study of power exchange using a twin spool engine emulator.

Potential improvements in turbofan idle steady state and transient performance (2018)
Conference Proceeding
Enalou, H. B., Rashed, M., & Bozhko, S. (2018). Potential improvements in turbofan idle steady state and transient performance

Once the engine is designed, imbalanced air massflow between LP and HP compressors at low speed settings is inevitable which enforces implementing of bleeding. However, by emerging More Electric Aircraft (MEA) with electrical machines on both HP and... Read More about Potential improvements in turbofan idle steady state and transient performance.

A reliability approach for the MEA power system architecture design optimization problem (2018)
Conference Proceeding
Recalde, A., Bozhko, S., Atkin, J., & Hill, C. (2018). A reliability approach for the MEA power system architecture design optimization problem. In 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.

3L-NPC AC-DC power converter using virtual space vector PWM with optimal switching sequence based on G-h coordinate (2018)
Conference Proceeding
Guo, F., Yang, T., Bozhko, S., & Wheeler, P. (2018). 3L-NPC AC-DC power converter using virtual space vector PWM with optimal switching sequence based on G-h coordinate. In 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

Generator overload reduction using smart power management (2018)
Conference Proceeding
Spagnolo, C., Sumsurooah, S., Hill, C., & Bozhko, S. (2018). Generator overload reduction using smart power management. In 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.

Smart Controller Design for Safety Operation of the MEA Electrical Distribution System (2018)
Conference Proceeding
Spagnolo, C., Sumsurooah, S., Hill, C. I., & Bozhko, S. (2018). Smart Controller Design for Safety Operation of the MEA Electrical Distribution System. In Proceedings: IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society (5778-5785). https://doi.org/10.1109/IECON.2018.8591132

As the electrical network of future aircraft become more and more complex, safety issues related with electrification need to be addressed. This paper shows that this can be achieved by developing an advanced control strategy and then applying it, th... Read More about Smart Controller Design for Safety Operation of the MEA Electrical Distribution System.

Potential Improvements in Turbofan's Performance by Electric Power Transfer (2018)
Conference Proceeding
Enalou, H. B., Le-Peuvedic, J. M., Rashed, M., & Bozhko, S. (2018). Potential Improvements in Turbofan's Performance by Electric Power Transfer. https://doi.org/10.4271/2018-01-1962

© 2018 SAE International. All Rights Reserved. Bleeding in engines is essential to mitigate the unmatched air massflow between low and High Pressure (HP) compressors at low speed settings, thus avoiding unstable operation due to surge and phenomena.... Read More about Potential Improvements in Turbofan's Performance by Electric Power Transfer.

Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection (2018)
Conference Proceeding
Li, C., Yang, T., Bozhko, S., & Wheeler, P. (2018). Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection. In Proceedings - 2018 IEEE Energy Conversion Congress and Exposition (ECCE) (6996-7002). https://doi.org/10.1109/ECCE.2018.8557537

DC-link neutral point voltage balancing for three level neutral point clamped converters has been extensively investigated. Many effective methods have been reported with desirable performances under high power factor conditions. However, most of the... Read More about Neutral Point Voltage Control Method for Three-Level Diode-Clamped Converter Based on Fourth Harmonic Current Injection.

Control system design and the power management of MEFADEC assembled on More-Electric Aircraft (2018)
Conference Proceeding
Yin, M., Bozhko, S., Yao, T., & You, C. (in press). Control system design and the power management of MEFADEC assembled on More-Electric Aircraft

This paper deals with a novel control system design of More Electric Full Authorized Digital Electronic Control (MEFADEC) on the more electric aircraft. On the base of the analysis of the power management of MEFADEC system, the power of the more elec... Read More about Control system design and the power management of MEFADEC assembled on More-Electric Aircraft.

A preliminary study into turbofan performance with LP-HP power exchange (2018)
Conference Proceeding
Enalou, H. B., Bozhko, S., Rashed, M., & Kulsangcharoen, P. (2018). A preliminary study into turbofan performance with LP-HP power exchange

Once an engine is designed, its Low Pressure (LP) and High Pressure (HP) shaft speeds are inevitably thermodynamically coupled which imposes certain operational constraints. These spools are not mechanically connected, however, in future more electri... Read More about A preliminary study into turbofan performance with LP-HP power exchange.

Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application (2018)
Conference Proceeding
Fritz, N., Rashed, M., Bozhko, S., Cuomo, F., & Wheeler, P. (2018). Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

A design procedure for the Dual Active Bridge (DAB) converter is presented, which aims to optimized power density and computational effort. When designing a DAB, the selection of circuit design parameters such as switching frequency, leakage inductan... Read More about Analytical modelling and power density optimisation of a single phase dual active bridge for aircraft application.

An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications (2018)
Conference Proceeding
Li, C., Yang, T., Lo Calzo, G., Bozhko, S., Gerada, C., & Wheeler, P. (2018). An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Electrical starter/generator (ESG) system is one of the key innovations of more-electric aircraft initiative. The ESG cranks the engine and accelerates it up to self-sustained speed using electric energy (starter mode) and then runs as a generator to... Read More about An advanced modulation scheme emphasising neutral point ripple suppression using predictive control for three-level NPC converters in aircraft electric starter generator applications.

Performance improvement of the CFM56-3 aircraft engine by electric power transfer (2018)
Conference Proceeding
Enalou, H. B., & Bozhko, S. (2018). Performance improvement of the CFM56-3 aircraft engine by electric power transfer. In Proceedings of 13th European Conference on Turbomachinery Fluid dynamics & Thermodynamics (ETC13)

With the design trends towards the More Electric Engine (MEE) for the More Electric Aircraft (MEA), areas for novel technologies can be pinpointed for multi-spool engines, introducing remarkable improvements to push the boundaries of propulsion techn... Read More about Performance improvement of the CFM56-3 aircraft engine by electric power transfer.

A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve (2017)
Conference Proceeding
Xu, Z., La Rocca, A., Arumugam, P., Pickering, S. J., Gerada, C., Bozhko, S., …Zhang, H. (2017). A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve. In Proceedings IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society (8557-8562). https://doi.org/10.1109/IECON.2017.8217503

This paper proposes a semi-flooded cooling concept for a high speed machine design. The electrical machine considered is for an aircraft starter-generator system where power density and efficiency are crucial. In order to achieve the high power densi... Read More about A semi-flooded cooling for a high speed machine: Concept, design and practice of an oil sleeve.