Optimal Variable Speed Control of BLDC Diesel Generator to Enhance Fuel Efficiency

Authors

  • Bakhtiar Sudibyo Institut Teknologi Sepuluh Nopember
  • Heri Suryoatmojo Institut Teknologi Sepuluh Nopember
  • Daniar Fahmi Institut Teknologi Sepuluh Nopember

DOI:

https://doi.org/10.12962/jaree.v9i2.460

Abstract

The growing adoption of renewable energy technologies still faces challenges such as instability, intermittent, and limited energy storage capacity. Diesel engine generators, known for their stability and reliability, remain essential as primary or backup power sources, especially in remote areas. However, conventional diesel generators operating at constant speed are inefficient in fuel consumption and produce high emissions. This study investigates the implementation of a variable-speed diesel generator system using a BLDC (Brushless Direct Current) generator controlled by a fuzzy logic-based controller (FLC). The proposed system adjusts engine speed and the duty cycle of the converter to optimize fuel efficiency while maintaining voltage and frequency stability. Simulation results demonstrate that the system reduces fuel consumption by up to 7.6% (0.86 liters/hour) for a 100 kW generator. Additionally, the FLC effectively stabilizes voltage and frequency during load changes and finally enhancing overall system performance.

References

Laboratoire de Recherche en Énergie Éolienne, Université du Québec à Rimouski, 300 allée des ursulines, Rimouski, Québec G5L 3A1, Canada et al., “Variable Speed Diesel Electric Generators: Technologies, Benefits, Limitations, Impact on Greenhouse Gases Emissions and Fuel Efficiency,” JEPT, vol. 4, no. 1, pp. 1–1, Jul. 2021, doi: 10.21926/jept.2201003.

M. Mobarra, B. Tremblay, M. Rezkallah, and A. Ilinca, “Advanced Control of a Compensator Motor Driving a Variable Speed Diesel Generator with Rotating Stator,” Energies, vol. 13, no. 9, p. 2224, May 2020, doi: 10.3390/en13092224.

D. H. Wang, C. V. Nayar, and C. Wang, “Modeling of stand-alone variable speed diesel generator using doubly-fed induction generator,” in The 2nd International Symposium on Power Electronics for Distributed Generation Systems, Hefei, China: IEEE, Jun. 2010, pp. 1–6. doi: 10.1109/PEDG.2010.5545769.

T. Waris and C. V. Nayar, “Variable speed constant frequency diesel power conversion system using doubly fed induction generator (DFIG),” in 2008 IEEE Power Electronics Specialists Conference, Rhodes, Greece: IEEE, Jun. 2008, pp. 2728–2734. doi: 10.1109/PESC.2008.4592357.

M. Z. Z. Muhtadi, H. Suryoatmojo, and M. Ashari, “Improving fuel consumption efficiency of synchronous diesel generator operated at adjustable speed using adaptive inertia weight particle swarm optimization algorithm,” vol. 8, no. 4, 2023.

H. Suryoatmojo, A. R. Aulia, D. C. Riawan, R. D. Dzulfikar, Prabowo, and Suwito, “Optimal Control of Diesel Engine Generator Using Variable Speed Permanent Magnet Synchronous Generator Based on Fuzzy Controller,” in 2022 10th International Conference on Smart Grid and Clean Energy Technologies (ICSGCE), Kuala Lumpur, Malaysia: IEEE, Oct. 2022, pp. 65–71. doi: 10.1109/ICSGCE55997.2022.9953645.

M. Rezkallah et al., “Coordinated Control Strategy for Hybrid off-Grid System Based on Variable Speed Diesel Generator,” IEEE Trans. on Ind. Applicat., vol. 58, no. 4, pp. 4411–4423, Jul. 2022, doi: 10.1109/TIA.2022.3174825.

H. Suryoatmojo, Y. Azmi, Prabowo, and Soedibyo, “Optimal Control of Diesel Engine Generator Using Variable Speed Doubly Fed Induction Generator to Reduce Fuel Consumption,” 2023, ICIC International 学会: 03. doi: 10.24507/ijicic.19.03.789.

G. Iwanski, Ł. Bigorajski, and W. Koczara, “Speed control with incremental algorithm of minimum fuel consumption tracking for variable speed diesel generator,” Energy Conversion and Management, vol. 161, pp. 182–192, Apr. 2018, doi: 10.1016/j.enconman.2018.01.053.

Fang Lin Luo and Hock Guan Yeo, “Advanced PM brushless DC motor control and system for electric vehicles,” in Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), Rome, Italy: IEEE, 2000, pp. 1336–1343. doi: 10.1109/IAS.2000.882057.

D. B. Minh, V. D. Quoc, and P. N. Huy, “Efficiency Improvement of Permanent Magnet BLDC Motors for Electric Vehicles,” Eng. Technol. Appl. Sci. Res., vol. 11, no. 5, pp. 7615–7618, Oct. 2021, doi: 10.48084/etasr.4367.

P. M. De Almeida, R. L. Valle, P. G. Barbosa, V. F. Montagner, V. Cuk, and P. F. Ribeiro, “Robust Control of a Variable-Speed BLDC Motor Drive,” IEEE J. Emerg. Sel. Top. Ind. Electron., vol. 2, no. 1, pp. 32–41, Jan. 2021, doi: 10.1109/JESTIE.2020.3035055.

J. E et al., “Experimental investigation on performance and economy characteristics of a diesel engine with variable nozzle turbocharger and its application in urban bus,” Energy Conversion and Management, vol. 193, pp. 149–161, Aug. 2019, doi: 10.1016/j.enconman.2019.04.062.

H.-W. Lee, T.-H. Kim, and M. Ehsani, “Practical Control for Improving Power Density and Efficiency of the BLDC Generator,” IEEE Trans. Power Electron., vol. 20, no. 1, pp. 192–199, Jan. 2005, doi: 10.1109/TPEL.2004.839805.

X. Weng et al., “Comprehensive comparison and analysis of non‐inverting buck boost and conventional buck boost converters,” J. eng., vol. 2019, no. 16, pp. 3030–3034, Mar. 2019, doi: 10.1049/joe.2018.8373.

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Published

2025-08-01

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Vol. 9 No. 2 (2025): July

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