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Axial position estimation of conical shaped motors for aerospace traction applications (2017)
Journal Article
Roggia, S., Cupertino, F., Gerada, C., & Galea, M. (2017). Axial position estimation of conical shaped motors for aerospace traction applications. IEEE Transactions on Industry Applications, 53(6), 5405-5414. https://doi.org/10.1109/TIA.2017.2717911

This paper is concerned with the use of conical induction machines. Such machines are extremely valuable when apart from the rotational torque output, an axial translation of the rotor is also required. The inherent attraction between the stator and... Read More about Axial position estimation of conical shaped motors for aerospace traction applications.

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.

Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory (2017)
Journal Article
Salis, V., Costabeber, A., Cox, S. M., Zanchetta, P., & Formentini, A. (2018). Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory. IEEE Transactions on Power Electronics, 33(5), 4023-4036. https://doi.org/10.1109/TPEL.2017.2714860

Stability analysis of power converters in AC net¬works is complex due to the non-linear nature of the conversion systems. Whereas interactions of converters in DC networks can be studied by linearising about the operating point, the extension of the... Read More about Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory.

Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation (2017)
Journal Article
Salis, V., Costabeber, A., Cox, S. M., & Zanchetta, P. (2017). Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation. IEEE Journal of Emerging and Selected Topics in Power Electronics, 5(4), 1513-1525. https://doi.org/10.1109/jestpe.2017.2714026

Stability analysis of power-converter-based AC systems poses serious challenges not only because of the non-linear nature of power converters, but also because linearisation is not generally applied around a steady-state operating point, as in the DC... Read More about Stability Assessment of Power-Converter-Based AC systems by LTP Theory: Eigenvalue Analysis and Harmonic Impedance Estimation.

Predicting harmonic distortion of multiple converters in a power system (2017)
Journal Article
Ivry, P. M., Oke, O. A., Thomas, D. W. P., & Sumner, M. (2017). Predicting harmonic distortion of multiple converters in a power system. Journal of Electrical and Computer Engineering, 2017, 1-10. https://doi.org/10.1155/2017/7621413

Various uncertainties arise in the operation and management of power systems containing Renewable Energy Sources (RES) that affect the systems power quality. These uncertainties may arise due to system parameter changes or design parameter choice. In... Read More about Predicting harmonic distortion of multiple converters in a power system.

Arm-Balancing Control and Experimental Validation of a Grid-Connected MMC With Pulsed DC Load (2017)
Journal Article
Jankovic, M., Costabeber, A., Watson, A. J., & Clare, J. C. (2017). Arm-Balancing Control and Experimental Validation of a Grid-Connected MMC With Pulsed DC Load. IEEE Transactions on Industrial Electronics, 64(12), 9180-9190. https://doi.org/10.1109/TIE.2017.2711516

This paper focuses on the operation of a grid connected Modular Multilevel Converter (MMC) supplying a pulsed DC load. The goal is to achieve minimum AC power fluctuation despite the high power fluctuation present on the DC side. The MMC has been sel... Read More about Arm-Balancing Control and Experimental Validation of a Grid-Connected MMC With Pulsed DC Load.

Design optimization of a short-term duty electrical machine for extreme environment (2017)
Journal Article
Arumugam, P., Amankwah, E. K., Walker, A., & Gerada, C. (2017). Design optimization of a short-term duty electrical machine for extreme environment. IEEE Transactions on Industrial Electronics, 64(12), 9784-9794. https://doi.org/10.1109/TIE.2017.2711555

This paper presents design optimisation of a short term duty electrical machine for extreme environments of high temperature and high altitudes. For such extreme environmental conditions of above 80⁰C and altitudes of 30km, thermal loading limits are... Read More about Design optimization of a short-term duty electrical machine for extreme environment.

Control Design and Voltage Stability Analysis of a Droop-Controlled Electrical Power System for More Electric Aircraft (2017)
Journal Article
Gao, F., Bozhko, S., Costabeber, A., Asher, G., & Wheeler, P. (2017). Control Design and Voltage Stability Analysis of a Droop-Controlled Electrical Power System for More Electric Aircraft. IEEE Transactions on Industrial Electronics, 64(12), 9271-9281. https://doi.org/10.1109/TIE.2017.2711552

This paper focuses on the analysis of a single DC bus multi-generator Electrical Power System (EPS) for future More Electric Aircrafts (MEA). Within such a single bus paradigm, the paper proposes a detailed control design procedure and provides a sta... Read More about Control Design and Voltage Stability Analysis of a Droop-Controlled Electrical Power System for More Electric Aircraft.

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.

Preselection algorithm based on predictive control for direct matrix converter (2017)
Journal Article
Dan, H., Zhu, Q., Peng, T., Yao, S., & Wheeler, P. (2017). Preselection algorithm based on predictive control for direct matrix converter. IET Electric Power Applications, 11(5), 768-775. https://doi.org/10.1049/iet-epa.2016.0473

This paper presents an enhanced predictive control strategy to reduce the calculation effort for direct matrix converters. The main idea is to preselect the switching states to decrease the calculation effort during each sample period. The proposed p... Read More about Preselection algorithm based on predictive control for direct matrix converter.

A fractional slot multiphase air-core compulsator with concentrated winding (2017)
Journal Article
Zhao, W., Wu, S., Cui, S., Gerada, C., Zhang, H., & Xu, Z. (2017). A fractional slot multiphase air-core compulsator with concentrated winding. IEEE Transactions on Plasma Science, 45(7), 1387-1393. https://doi.org/10.1109/TPS.2017.2705243

Compulsator is a specially designed generator capa¬ble of delivering high current pulses to a low-impedance load, such as the electromagnetic railgun. In order to increase the tip speed of the rotor, advanced composite materials have been used in the... Read More about A fractional slot multiphase air-core compulsator with concentrated winding.

Design and implementation of a loss optimization control for electric vehicle in-wheel permanent-magnet synchronous motor direct drive system (2017)
Journal Article
Guo, Q., Zhang, C., Li, L., Gerada, D., Zhang, J., & Wang, M. (2017). Design and implementation of a loss optimization control for electric vehicle in-wheel permanent-magnet synchronous motor direct drive system. Applied Energy, 204, https://doi.org/10.1016/j.apenergy.2017.05.023

As a main driving force of electric vehicles (EVs), the losses of in-wheel permanent-magnet synchronous motor (PMSM) direct drive system can seriously affect the energy consumption of EVs. This paper proposes a loss optimization control strategy for... Read More about Design and implementation of a loss optimization control for electric vehicle in-wheel permanent-magnet synchronous motor direct drive system.

Self-excitation and energy recovery of air-core compulsators (2017)
Journal Article
Zhao, W., Wu, S., Cui, S., Gerada, C., Zhang, H., & Xu, Z. (2017). Self-excitation and energy recovery of air-core compulsators. IEEE Transactions on Plasma Science, 45(7), 1168-1174. https://doi.org/10.1109/TPS.2017.2700027

As power supplies, compulsators are popular choices for high-end railgun power supplies. In order to increase power and energy density, air-core compulsators are proposed by using composite materials instead of traditional iron-core compulsators. Due... Read More about Self-excitation and energy recovery of air-core compulsators.

Aircraft navigation based on differentiation–integration observer (2017)
Journal Article
Wang, X., & Cai, L. (2017). Aircraft navigation based on differentiation–integration observer. Aerospace Science and Technology, 68, https://doi.org/10.1016/j.ast.2017.05.007

In this paper, a generalized differentiation–integration observer is presented based on sensors selection. The proposed differentiation–integration observer can estimate the multiple integrals and high-order derivatives of a signal, synchronously. Th... Read More about Aircraft navigation based on differentiation–integration observer.

Thermal Design of Linear Induction and Synchronous Motors for Electromagnetic Launch of Civil Aircraft (2017)
Journal Article
Bertola, L., Cox, T., Wheeler, P., Garvey, S. D., & Morvan, H. (2017). Thermal Design of Linear Induction and Synchronous Motors for Electromagnetic Launch of Civil Aircraft. IEEE Transactions on Plasma Science, 45(7), 1146-1153. https://doi.org/10.1109/TPS.2017.2697941

The engine size of modern passenger transport aircraft is principally determined by take-off conditions, since initial acceleration requires maximum engine power. An elec¬tromagnetic launch (EML) system could provide some or all of the energy require... Read More about Thermal Design of Linear Induction and Synchronous Motors for Electromagnetic Launch of Civil Aircraft.

Historical data based energy management in a microgrid with a hybrid energy storage system (2017)
Journal Article
Jia, K., Chen, Y., Bi, T., Lin, Y., Thomas, D. W., & Sumner, M. (2017). Historical data based energy management in a microgrid with a hybrid energy storage system. IEEE Transactions on Industrial Informatics, 13(5), 2597-2605. https://doi.org/10.1109/TII.2017.2700463

In a micro-grid, due to potential reverse output profiles of the Renewable Energy Source (RES) and the load, energy storage devices are employed to achieve high self-consumption of RES and to minimize power surplus flowing back into the main grid. Th... Read More about Historical data based energy management in a microgrid with a hybrid energy storage system.

A Physical RC Network Model for Electrothermal Analysis of a Multichip SiC Power Module (2017)
Journal Article
Li, J., Castellazzi, A., Eleffendi, M. A., Gurpinar, E., Johnson, C. M., & Mills, L. (2018). A Physical RC Network Model for Electrothermal Analysis of a Multichip SiC Power Module. IEEE Transactions on Power Electronics, 33(3), 2494-2508. https://doi.org/10.1109/TPEL.2017.2697959

© 2017 IEEE. This paper is concerned with the thermal models which can physically reflect the heat-flow paths in a lightweight three-phase half-bridge two-level SiC power module with six MOSFETs and can be used for coupled electrothermal simulation.... Read More about A Physical RC Network Model for Electrothermal Analysis of a Multichip SiC Power Module.

Error-voltage-based open-switch fault diagnosis strategy for matrix converters with model predictive control method (2017)
Journal Article
Dan, H., Peng, T., Su, M., Deng, H., Zhu, Q., Zhao, Z., & Wheeler, P. (2017). Error-voltage-based open-switch fault diagnosis strategy for matrix converters with model predictive control method. IEEE Transactions on Industry Applications, 53(5), 4603-4612. https://doi.org/10.1109/TIA.2017.2695978

This paper proposes an error-voltage based open-switch fault diagnosis strategy for matrix converter (MC). A finite control set model predictive control (FCS-MPC) method is used to operate the MC. The MC system performances under normal operation and... Read More about Error-voltage-based open-switch fault diagnosis strategy for matrix converters with model predictive control method.

A fast method for modelling skew and its effects in salient-pole synchronous generators (2017)
Journal Article
Nuzzo, S., Galea, M., Gerada, C., & Brown, N. (in press). A fast method for modelling skew and its effects in salient-pole synchronous generators. IEEE Transactions on Industrial Electronics, 64(10), https://doi.org/10.1109/TIE.2017.2694378

The general effects of implementing skewing techniques in electrical machines are well known and have been extensively studied over the years. An important aspect of such techniques is related to the identification of optimal methods for analyzing an... Read More about A fast method for modelling skew and its effects in salient-pole synchronous generators.