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An Advanced Dual-Carrier-Based Multi-Optimized PWM Strategy of Three-Level Neutral-Point-Clamped Converters for More-Electric-Aircraft Applications (2023)
Journal Article
Guo, F., M. Diab, A., Shen Yeoh, S., Yang, T., Bozhko, S., Wheeler, P., & Zhao, Y. (2024). An Advanced Dual-Carrier-Based Multi-Optimized PWM Strategy of Three-Level Neutral-Point-Clamped Converters for More-Electric-Aircraft Applications. IEEE Transactions on Energy Conversion, 39(1), 356-367. https://doi.org/10.1109/TEC.2023.3312599

Since three-level neutral-point-clamped (3L-NPC) power generation units bring much competitiveness to the next-generation electric starter/generator (ESG) system for more-electric-aircraft (MEA) applications, the versatile multi-optimized pulse-width... Read More about An Advanced Dual-Carrier-Based Multi-Optimized PWM Strategy of Three-Level Neutral-Point-Clamped Converters for More-Electric-Aircraft Applications.

Enhanced Starting Control Scheme for PMM-Based Starter/Generator System for MEA (2023)
Journal Article
Mohamed, M. A. A., Shen Yeoh, S., Atkin, J., Diab, A. M., Khalaf, M., & Bozhko, S. (2023). Enhanced Starting Control Scheme for PMM-Based Starter/Generator System for MEA. Aerospace, 10(2), Article 168. https://doi.org/10.3390/aerospace10020168

A control approach for aircraft Starter/Generator (S/G) with Permanent Magnet Machine (PMM) operating in Flux Weakening (FW) mode is presented. The proposed strategy helps the previous approaches which are adopted for the Variable Voltage Bus (VVB) o... Read More about Enhanced Starting Control Scheme for PMM-Based Starter/Generator System for MEA.

Comparative Stability Analysis of Synchronous Reference Frame Current Controllers Operated at High Fundamental Frequency (2022)
Journal Article
Diab, A. M., Guo, F., Yeoh, S. S., Bozhko, S., Gerada, C., & Galea, M. (2022). Comparative Stability Analysis of Synchronous Reference Frame Current Controllers Operated at High Fundamental Frequency. IEEE Transactions on Transportation Electrification, https://doi.org/10.1109/TTE.2022.3208825

Synchronous reference frame (SRF) proportional-integral (PI) current controller (CC) is the most well-established solution for current regulation in AC machine drives and grid-connected voltage source converters. The design of high dynamic performanc... Read More about Comparative Stability Analysis of Synchronous Reference Frame Current Controllers Operated at High Fundamental Frequency.

Hybrid Active Modulation Strategy for Three-Level Neutral-Point-Clamped Converters in High-Speed Aerospace Drives (2022)
Journal Article
Guo, F., Yang, T., Diab, A. M., Huang, Z., Yeoh, S. S., Bozhko, S., & Wheeler, P. (2023). Hybrid Active Modulation Strategy for Three-Level Neutral-Point-Clamped Converters in High-Speed Aerospace Drives. IEEE Transactions on Industrial Electronics, 70(4), 3449-3460. https://doi.org/10.1109/tie.2022.3176309

In the aircraft electric starter/generator system, the three-level neutral-point-clamped converters play a crucial role in driving turbofan engines and delivering onboard electrical power. However, the conventional pulsewidth modulation (PWM) strateg... Read More about Hybrid Active Modulation Strategy for Three-Level Neutral-Point-Clamped Converters in High-Speed Aerospace Drives.

Efficiency Focused Energy Management Strategy Based on Optimal Droop Gain Design for More Electric Aircraft (2022)
Journal Article
Mohamed, M. A., Yeoh, S. S., Atkin, J., Hussaini, H., & Bozhko, S. (2022). Efficiency Focused Energy Management Strategy Based on Optimal Droop Gain Design for More Electric Aircraft. IEEE Transactions on Transportation Electrification, https://doi.org/10.1109/tte.2022.3159731

Due to the substantial increase of the number of electrically-driven systems on-board More Electric Aircraft (MEA), the on-board Electric Power Systems (EPS) are becoming more and more complex. Therefore, there is a need to develop a control strategy... Read More about Efficiency Focused Energy Management Strategy Based on Optimal Droop Gain Design for More Electric Aircraft.

An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives (2021)
Journal Article
Li, C., Yang, T., Huang, Z., Yeoh, S. S., Bozhko, S., & Wheeler, P. (2021). An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives. IEEE Access, 9, 144805-144819. https://doi.org/10.1109/access.2021.3122922

This paper introduces an advanced space vector modulation technique for three-level neutral-point-clamped (3L-NPC) converters. The studied 3L-NPC converters within aircraft electric starter generator (ESG) systems normally operate at high modulation... Read More about An Advanced Modulation Technique Featuring Neutral Point Voltage Ripple Suppression of Three-Level Converters in High-Speed Drives.

An Overmodulation Algorithm With Neutral-Point Voltage Balancing for Three-Level Converters in High-Speed Aerospace Drives (2021)
Journal Article
Guo, F., Yang, T., Diab, A. M., Yeoh, S. S., Li, C., Bozhko, S., & Wheeler, P. (2022). An Overmodulation Algorithm With Neutral-Point Voltage Balancing for Three-Level Converters in High-Speed Aerospace Drives. IEEE Transactions on Power Electronics, 37(2), 2021-2032. https://doi.org/10.1109/tpel.2021.3105752

In this article, a virtual space vector based overmodulation algorithm is presented for three-level neutral-point (NP) clamped converters in high-speed aerospace motor drives. With the proposed inscribed polygonal-boundary compression technique, the... Read More about An Overmodulation Algorithm With Neutral-Point Voltage Balancing for Three-Level Converters in High-Speed Aerospace Drives.

An enhanced feedforward flux weakening control for high-speed permanent magnet machine drive applications (2021)
Journal Article
Lang, X., Yang, T., Li, C., Yeoh, S. S., Bozhko, S., & Wheeler, P. (2021). An enhanced feedforward flux weakening control for high-speed permanent magnet machine drive applications. IET Power Electronics, 14(13), 2179-2193. https://doi.org/10.1049/pel2.12170

Permanent magnet machines have been used in the high-speed drive applications due to their high-efficiency, high-power-density, and wide-speed range characteristics. However, control of such high-speed permanent magnet machines machine is always chal... Read More about An enhanced feedforward flux weakening control for high-speed permanent magnet machine drive applications.

An Enhanced Virtual Space Vector Modulation Scheme of Three-Level NPC Converters for More-Electric-Aircraft Applications (2021)
Journal Article
Guo, F., Yang, T., Diab, A., Yeoh, S. S., Bozhko, S., & Wheeler, P. (2021). An Enhanced Virtual Space Vector Modulation Scheme of Three-Level NPC Converters for More-Electric-Aircraft Applications. IEEE Transactions on Industry Applications, 57(5), 5239-5251. https://doi.org/10.1109/tia.2021.3085798

Multilevel converters have been used for aircraft electric starter/generator (ESG) systems due to their high power qualities. One of the desirable topologies is the three-level neutral-point-clamped (3L-NPC) converter. Our studied ESG system operates... Read More about An Enhanced Virtual Space Vector Modulation Scheme of Three-Level NPC Converters for More-Electric-Aircraft Applications.

Adaptive Stabilization of a Permanent Magnet Synchronous Generator-Based DC Electrical Power System in More Electric Aircraft (2021)
Journal Article
Suyapan, A., Areerak, K., Bozhko, S., Yeoh, S. S., & Areerak, K. (2021). Adaptive Stabilization of a Permanent Magnet Synchronous Generator-Based DC Electrical Power System in More Electric Aircraft. IEEE Transactions on Transportation Electrification, 7(4), 2965-2975. https://doi.org/10.1109/tte.2021.3081161

Most loads of electrical power systems on a more electric aircraft (MEA) are regulated power converters. These loads behave as constant power loads (CPLs) that can significantly affect system stability. The system will become unstable and will be una... Read More about Adaptive Stabilization of a Permanent Magnet Synchronous Generator-Based DC Electrical Power System in More Electric Aircraft.

Enhanced Active Disturbance Rejection Current Controller for Permanent Magnet Synchronous Machines Operated at Low Sampling Time Ratio (2021)
Journal Article
Diab, A. M., Yeoh, S. S., Bozhko, S., Gerada, C., & Galea, M. (2021). Enhanced Active Disturbance Rejection Current Controller for Permanent Magnet Synchronous Machines Operated at Low Sampling Time Ratio. IEEE Journal of Emerging and Selected Topics in Industrial Electronics, https://doi.org/10.1109/jestie.2021.3063919

Recently, Active Disturbance Rejection Control (ADRC) Scheme has been widely used for current regulation in AC drive systems owing to its robustness to system uncertainties and its high disturbance-rejection capability. However, it has not been consi... Read More about Enhanced Active Disturbance Rejection Current Controller for Permanent Magnet Synchronous Machines Operated at Low Sampling Time Ratio.

Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller (2021)
Journal Article
Diab, A. M., Bozhko, S., Guo, F., Rashed, M., Buticchi, G., Xu, Z., …Galea, M. (2021). Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller. IEEE Access, 9, 22156-22170. https://doi.org/10.1109/access.2021.3054845

Synchronous reference frame proportional-integral (PI) current controller (CC) is considered the most well-established solution for the current regulation in electrical drives. However, the gain selection of the PI CC is still regarded to be poorly r... Read More about Fast and Simple Tuning Rules of Synchronous Reference Frame Proportional-Integral Current Controller.

A Low-Complexity Optimal Switching Time-Modulated Model-Predictive Control for PMSM With Three-Level NPC Converter (2020)
Journal Article
Wang, Q., Yu, H., Li, C., Lang, X., Yeoh, S. S., Yang, T., …Wheeler, P. (2020). A Low-Complexity Optimal Switching Time-Modulated Model-Predictive Control for PMSM With Three-Level NPC Converter. IEEE Transactions on Transportation Electrification, 6(3), 1188-1198. https://doi.org/10.1109/TTE.2020.3012352

Conventional finite control set model-predictive control (FCS-MPC) presents a high computational burden, especially in three-level neutral-point-clamped (NPC) converters. This article proposes a low-complexity optimal switching time-modulated model-p... Read More about A Low-Complexity Optimal Switching Time-Modulated Model-Predictive Control for PMSM With Three-Level NPC Converter.

Modulation Limit Based Control Strategy for More Electric Aircraft Generator System (2019)
Journal Article
Shen Yeoh, S., Rashed, M., & Bozhko, S. (2019). Modulation Limit Based Control Strategy for More Electric Aircraft Generator System. SAE Technical Papers, Article 2018-01-1937. https://doi.org/10.4271/2018-01-1937

Vector based control strategies have been extensively employed for drive systems, and in recent times to the More Electric Aircraft (MEA) generator based systems. The control schemes should maintain the bus voltage and adhere to the generator system... Read More about Modulation Limit Based Control Strategy for More Electric Aircraft Generator System.

Variable voltage bus concept for aircraft electrical power system (2018)
Journal Article
Yeoh, S. S., Rashed, M., Sanders, M., & Bozhko, S. (2018). Variable voltage bus concept for aircraft electrical power system. IEEE Transactions on Industrial Electronics, 66(7), 5634-5643. https://doi.org/10.1109/tie.2018.2883276

The paper deals with the innovative concept of "variable voltage" bus concept for future more-electric aircraft platforms. Using new functionalities and opportunities offered by innovative sources actively controlled by power electronics, there is an... Read More about Variable voltage bus concept for aircraft electrical power system.

Multi-Objective Supervisory Control for DC/DC Converters in Advanced Aeronautic Applications (2018)
Journal Article
Cavallo, A., Canciello, G., Guida, B., Kulsangcharoen, P., Yeoh, S., Rashed, M., & Bozhko, S. (2018). Multi-Objective Supervisory Control for DC/DC Converters in Advanced Aeronautic Applications. Energies, 11(11), Article 3216. https://doi.org/10.3390/en11113216

In this paper, an intelligent control strategy for DC/DC converters is proposed. The converter connects two DC busses, a high-voltage and a low-voltage bus. The control scheme is composed by a two-layer architecture, a low-level control based on the... Read More about Multi-Objective Supervisory Control for DC/DC Converters in Advanced Aeronautic Applications.

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.

A detailed modular governor-turbine model for multiple-spool gas turbine with scrutiny of bleeding effect (2017)
Journal Article
Balaghi Enalou, H., Abbasi Soreshjani, E., Rashed, M., Shen Yeoh, S., & Bozhko, S. (in press). A detailed modular governor-turbine model for multiple-spool gas turbine with scrutiny of bleeding effect. Journal of Engineering for Gas Turbines and Power, 139(11), Article 114501. https://doi.org/10.1115/1.4036947

Multiple-spool gas turbines are usually utilized for power supply in aircrafts, ships, and terrestrial electric utility plants. As a result, having a reliable model of them can aid with the control design process and stability analysis. Since several... Read More about A detailed modular governor-turbine model for multiple-spool gas turbine with scrutiny of bleeding effect.

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.