Design of an Integrated Inductor for 45kW Aerospace Starter-Generator

Raza Khowja, M.; Gerada, C.; Vakil, G.; Quadri, S. Quadir; Wheeler, P.; Patel, C.

doi:10.1109/ITEC.2018.8450246

High Frequency Harmonic Current Generator for More Electric Aircraft Based on GaN HFETs (2018)
Conference Proceeding
Wang, M., Fan, B., Xu, L., Kuiwang, K., Zheng, Z., Li, Y., …Li, J. (2018). High Frequency Harmonic Current Generator for More Electric Aircraft Based on GaN HFETs. 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.2018.8607717

© 2018 IEEE. With the development of more electric aircraft (MEA), the number of power electronic equipment and variable frequency electrical loads are increasing rapidly, which leads to challenges in terms of power quality of aircraft power system.... Read More about High Frequency Harmonic Current Generator for More Electric Aircraft Based on GaN HFETs.

Performance Comparison of Doubly Salient Reluctance Generators for High-Voltage DC Power System of More Electric Aircraft (2018)
Conference Proceeding
Li, Y., Zhang, Z., Gerada, D., & Gerada, C. (2018). Performance Comparison of Doubly Salient Reluctance Generators for High-Voltage DC Power System of More Electric Aircraft. 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.2018.8607694

The generation performance of the switched reluctance machine (SRM)-based starter/generator (S/G) and the doubly salient electromagnetic machine (DSEM)-based S/G is analyzed and compared in this paper. The topologies, operation principles of the doub... Read More about Performance Comparison of Doubly Salient Reluctance Generators for High-Voltage DC Power System of More Electric Aircraft.

A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft (2018)
Conference Proceeding
Golovanov, D., Xu, Z., Gerada, D., Gerada, C., & Papini, L. (2018). A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft. 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.2018.8607715

The power density of electrical machines required for more-electric and hybrid-electric aircraft has become a critical aspect and target of optimization. This paper looks at the development aspects of a multi-domain tool to aid for system-level optim... Read More about A Holistic Electrical Machine Design Tool for More-Electric and Hybrid-Electric Aircraft.

A Novel Thermal Network Model Used for Temperature Calculation and Analysis on Brushless Doubly-Fed Generator With Winding Encapsulating Structure (2018)
Journal Article
Jiang, X., Zhang, Y., Jin, S., Zhang, F., & Gerada, C. (2019). A Novel Thermal Network Model Used for Temperature Calculation and Analysis on Brushless Doubly-Fed Generator With Winding Encapsulating Structure. IEEE Transactions on Industry Applications, 55(2), 1473-1483. https://doi.org/10.1109/tia.2018.2883542

© 1972-2012 IEEE. In recent years, magnetic-barrier rotor has been put forward for brushless doubly-fed generator (BDFG) application owing to its desirable performance, such as high power density and strong magnetic coupling ability. However, it also... Read More about A Novel Thermal Network Model Used for Temperature Calculation and Analysis on Brushless Doubly-Fed Generator With Winding Encapsulating Structure.

The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft (2018)
Conference Proceeding
Golovanov, D., Xu, Z., Gerada, D., Degano, M., Vakil, G., & Gerada, C. (2018). The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft. In 2018 21st International Conference on Electrical Machines and Systems (ICEMS) (169-173). https://doi.org/10.23919/ICEMS.2018.8549390

Maximizing the power density as well as efficiency are two of the main critical aspects for engineers who are designing electrical machines for aerospace applications. Iron losses have a significant impact on the total machine efficiency, thermal sta... Read More about The Influence of Stator Material on the Power Density and Iron Loss of a High-Performace Starter-Generator for More Electric Aircraft.

Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines (2018)
Conference Proceeding
Valente, G., Papini, L., Formentini, A., Gerada, C., & Zanchetta, P. (2018). Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines. . https://doi.org/10.23919/IPEC.2018.8507470

This paper presents a fault tolerant study of a multiphase sectored permanent magnet synchronous machine involving a tripel three-phase winding. The machine electromagnetic model is written in a general way so that it can be extended and applied to a... Read More about Open-circuit fault tolerant study of bearingless multi-sector permanent magnet machines.

A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation (2018)
Conference Proceeding
Wang, S., Degano, M., Kang, J., Galassini, A., & Gerada, C. (2018). A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation. In Proceedings 2018 XIII International Conference on Electrical Machines (ICEM) (1360-1366). https://doi.org/10.1109/ICELMACH.2018.8506853

Maximum torque per ampere control (MTPA) takes full advantage of the reluctance torque aiming at the minimum copper loss, which can increase the torque output under the minimum current conditions. The traditional MTPA method makes use of equations wi... Read More about A Novel Newton-Raphson-Based Searching Method for the MTPA Control of Pmasynrm Considering Magnetic and Cross Saturation.

Design and testing of PMSM for aerospace EMA applications (2018)
Conference Proceeding
Giangrande, P., Madonna, V., Sala, G., Kladas, A., Gerada, C., & Galea, M. (2018). Design and testing of PMSM for aerospace EMA applications. In IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society (2038-2043). https://doi.org/10.1109/IECON.2018.8591318

The more-electric aircraft initiative represents an important technology step-change for the aircraft industry. The reduction of both fuel consumption and environmental impact are leading to alternative solutions for actuating the flight control surf... Read More about Design and testing of PMSM for aerospace EMA applications.

Consideration on Eddy Current Reduction Techniques for Solid Materials Used in Unconventional Magnetic Circuits (2018)
Journal Article
Mohammed, A. M., Galea, M., Cox, T., & Gerada, C. (2019). Consideration on Eddy Current Reduction Techniques for Solid Materials Used in Unconventional Magnetic Circuits. IEEE Transactions on Industrial Electronics, 66(6), 4870-4879. https://doi.org/10.1109/TIE.2018.2875641

The use of solid materials in tubular, linear machines has significant manufacturing benefits, as this removes the need for an axially laminated stator. However, this comes at the cost of extra eddy current losses. In this paper, a detailed analysis... Read More about Consideration on Eddy Current Reduction Techniques for Solid Materials Used in Unconventional Magnetic Circuits.

Mid-Complexity Circuital Model of Induction Motor with Rotor Cage: A Numerical Resolution (2018)
Conference Proceeding
Bolognesi, P., Gerada, C., Papini, L., & Marfoli, A. (2018). Mid-Complexity Circuital Model of Induction Motor with Rotor Cage: A Numerical Resolution. In Proceedings 2018 XIII International Conference on Electrical Machines (ICEM) (277 - 283). https://doi.org/10.1109/ICELMACH.2018.8506685

A general middle complexity model of electromagnetic devices is applied to a cage induction motor. Such modelling approach has been simplified and adapted in order to pursue a fair representation of the electrical machine. Particular attention was gi... Read More about Mid-Complexity Circuital Model of Induction Motor with Rotor Cage: A Numerical Resolution.

An Integrated Method for Three-Phase AC Excitation and High-Frequency Voltage Signal Injection for Sensorless Starting of Aircraft Starter/Generator (2018)
Journal Article
Wei, J., Xu, H., Zhou, B., Zhang, Z., & Gerada, C. (2019). An Integrated Method for Three-Phase AC Excitation and High-Frequency Voltage Signal Injection for Sensorless Starting of Aircraft Starter/Generator. IEEE Transactions on Industrial Electronics, 66(7), 5611-5622. https://doi.org/10.1109/tie.2018.2871795

© 1982-2012 IEEE. This paper proposes an integrated method of three-phase ac excitation and high-frequency voltage signal injection (HFVSI) for sensorless controlled starting of brushless synchronous machines (BSM) used as starter/generator in variab... Read More about An Integrated Method for Three-Phase AC Excitation and High-Frequency Voltage Signal Injection for Sensorless Starting of Aircraft Starter/Generator.

Study of a Silicon Carbide MOSFET Power Module to Establish the Benefits of Adding Anti-parallel Schottky Diodes (2018)
Conference Proceeding
Trentin, A., Hind, D., Degano, M., Tighe, C., Arevalo, S. L., Yang, L., …Packwood, M. (2018). Study of a Silicon Carbide MOSFET Power Module to Establish the Benefits of Adding Anti-parallel Schottky Diodes. In 2018 IEEE Energy Conversion Congress and Exposition (ECCE) (1829-1836). https://doi.org/10.1109/ECCE.2018.8557415

The majority of commercial Silicon Carbide (SiC) MOSFET based power modules available on the market today also include SiC Schottky diodes placed in anti-parallel with the MOSFETs. Using an accurate electrical and thermal simulation model this paper... Read More about Study of a Silicon Carbide MOSFET Power Module to Establish the Benefits of Adding Anti-parallel Schottky Diodes.

Thermal analysis of fault-tolerant electrical machines for aerospace actuators (2018)
Journal Article
Madonna, V., Giangrande, P., Galea, M., & Gerada, C. (2019). Thermal analysis of fault-tolerant electrical machines for aerospace actuators. IET Electric Power Applications, 13(7), 843 – 852. https://doi.org/10.1049/iet-epa.2018.5153

For safety critical applications, electrical machines need to satisfy several constraints, in order to be considered fault-tolerant. In fact, if specific design choices and appropriate control strategies are embraced, fault-tolerant machines can oper... Read More about Thermal analysis of fault-tolerant electrical machines for aerospace actuators.

Improved thermal management and analysis for stator end-windings of electrical machines (2018)
Journal Article
Madonna, V., Walker, A., Giangrande, P., Serra, G., Gerada, C., & Galea, M. (2019). Improved thermal management and analysis for stator end-windings of electrical machines. IEEE Transactions on Industrial Electronics, 66(7), 5057-5069. https://doi.org/10.1109/tie.2018.2868288

In electrical machine design, thermal management plays a key role in improving performance and reducing size. End-windings are commonly identified as the machine hot-spot. Hence, lowering and predicting end-windings temperature are crucial tasks in t... Read More about Improved thermal management and analysis for stator end-windings of electrical machines.

Enhanced power sharing transient with droop controllers for multi-three-phase synchronous electrical machines (2018)
Journal Article
Galassini, A., Costabeber, A., Degano, M., Gerada, C., Tessarolo, A., & Menis, R. (2019). Enhanced power sharing transient with droop controllers for multi-three-phase synchronous electrical machines. IEEE Transactions on Industrial Electronics, 66(7), 5600-5610. https://doi.org/10.1109/tie.2018.2868029

This paper presents a droop-based dis- tributed control strategy for multi-three-phase machines that provides augmented controllability during power shar- ing transients. The proposed strategy is able to mitigate the mutual interactions among differe... Read More about Enhanced power sharing transient with droop controllers for multi-three-phase synchronous electrical machines.

Double Rotor Synchronous Reluctance Machine: Analysis towards Torque Capability (2018)
Conference Proceeding
Al-Ani, M., Mahmoud, H., Degano, M., & Gerada, C. (2018). Double Rotor Synchronous Reluctance Machine: Analysis towards Torque Capability. In Proceedings: 2018 XIII International Conference on Electrical machines (ICEM) (2144 - 2149). https://doi.org/10.1109/ICELMACH.2018.8506898

© 2018 IEEE. This paper presents a comparative analysis of double rotor synchronous reluctance machines. Different topologies of the proposed machine have been investigated, such as double rotor with double-sided stator and double rotor with single-s... Read More about Double Rotor Synchronous Reluctance Machine: Analysis towards Torque Capability.

Investigation of AC Copper and Iron Losses in High-Speed High-Power Density PMSM (2018)
Conference Proceeding
Al-Timimy, A., Giangrande, P., Degano, M., Galea, M., & Gerada, C. (2018). Investigation of AC Copper and Iron Losses in High-Speed High-Power Density PMSM. In Proceedings - 2018 XIII International Conference on Electrical Machines (ICEM) (263-269). https://doi.org/10.1109/ICELMACH.2018.8507166

This paper presents a detailed investigation of AC copper losses in high-speed high-power density permanent magnet synchronous machine. For parallel strands winding, it is not easy to accurately estimate the AC copper losses using finite element mode... Read More about Investigation of AC Copper and Iron Losses in High-Speed High-Power Density PMSM.

Electrical Machine Rotor Shielding for Low Cost Electrical Drive (2018)
Conference Proceeding
Al-Ani, M., Vakil, G., & Gerada, C. (2018). Electrical Machine Rotor Shielding for Low Cost Electrical Drive. In 2018 IEEE Transportation Electrification Conference and Expo (ITEC) (38-43). https://doi.org/10.1109/ITEC.2018.8450226

Electrical machine rotor shielding has been proposed for high-speed electrical machines, i.e. ≥50krpm, where a smooth current waveform becomes difficult and costly to generate due to the required high switching frequency. The rotor shielding is used... Read More about Electrical Machine Rotor Shielding for Low Cost Electrical Drive.

Mass Production Costing of Induction Machines for Automotive Applications (2018)
Conference Proceeding
Hundak, V., Cox, T., Vakil, G., & Gerada, C. (2018). Mass Production Costing of Induction Machines for Automotive Applications. In 2018 IEEE Transportation and Electrification Conference and Expo (ITEC) (500-505). https://doi.org/10.1109/ITEC.2018.8450116

Cost is one of the key parameters of electric machines designed for automotive applications. In order to keep manufacturing cost low, it is desirable to estimate the manufacturing cost of the machine in the early stages of the design process. For thi... Read More about Mass Production Costing of Induction Machines for Automotive Applications.

Design of an Integrated Inductor for 45kW Aerospace Starter-Generator (2018)
Conference Proceeding
Raza Khowja, M., Gerada, C., Vakil, G., Quadri, S. Q., Wheeler, P., & Patel, C. (2018). Design of an Integrated Inductor for 45kW Aerospace Starter-Generator. In 2018 IEEE Transportation and Electrification Conference and Expo (ITEC) (570-575). https://doi.org/10.1109/ITEC.2018.8450246

A close physical and functional integration of passive components is required to make an efficient and power dense overall system. Such power dense systems are a prerequisite in aerospace and marine applications. This paper presents a design of an in... Read More about Design of an Integrated Inductor for 45kW Aerospace Starter-Generator.

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