Your browser does not support JavaScript!

Power maximised and anti-saturation power conditioning circuit for current transformer harvester on overhead lines

Power maximised and anti-saturation power conditioning circuit for current transformer harvester on overhead lines

For access to this article, please select a purchase option:

Buy article PDF
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Your details
Why are you recommending this title?
Select reason:
IET Power Electronics — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

The current transformer (CT) harvester is effective and efficient for energy harvesting on overhead lines due to its higher reliability and power density compared to other techniques. However, the current of overhead conductor fluctuates from tens of to thousands of amperes, which brings two challenges for the CT harvester design. First, the startup current, above which the harvester can independently power the monitoring devices, should be as low as possible, so that the battery capacity can be reduced; second, the magnetic core should be ensured unsaturated in high current condition. This study proposes a power conditioning circuit with comprehensive control to maximise the output power and prevent the core from saturation. A prototype that can deliver 22.5 W power with 200 A is designed, and a control strategy based on the finite-state machine is implemented. Experimental results show that the startup current for 2 W load is about 30 A, and the core power density at 60 A is 45.96 mW/cm3, both of which are markedly improved compared to the reported results of the same condition.


    1. 1)
      • 15. ‘Power Donut 3: PD3 instrumentation platform for overhead transmission lines (January 2017)’. Available at, accessed 10 January 2018.
    2. 2)
      • 17. Roscoe, N.M., Judd, M.D.: ‘Harvesting energy from magnetic fields to power condition monitoring sensors’, IEEE Sens. J., 2013, 13, (6), pp. 22632270.
    3. 3)
      • 10. Du, L., Wang, C., Li, X., et al: ‘A novel power supply of online monitoring systems for power transmission lines’, IEEE Trans. Ind. Electron., 2010, 57, (8), pp. 28892895.
    4. 4)
      • 7. Wu, Z., Wen, Y., Li, P.: ‘A power supply of self-powered online monitoring systems for power cords’, IEEE Trans. Energy Convers., 2013, 28, (4), pp. 921928.
    5. 5)
      • 19. Carmo, J.P., Gonçalves, L.M., Correia, J.H.: ‘Thermoelectric microconverter for energy harvesting systems’, IEEE Trans. Ind. Electron., 2010, 57, (3), pp. 861867.
    6. 6)
      • 18. Yuan, S., Huang, Y., Zhou, J., et al: ‘Magnetic field energy harvesting under overhead power lines’, IEEE Trans. Power Electron., 2015, 30, (11), pp. 61916202.
    7. 7)
      • 24. Wang, Y., Li, Y., Cao, Y., et al: ‘Hybrid AC/DC microgrid architecture with comprehensive control strategy for energy management of smart building’, Int. J. Electr. Power Energy Syst., 2018, 101, pp. 151161.
    8. 8)
      • 14. Taithongchai, T., Leelarasmee, C.: ‘Adaptive electromagnetic energy harvesting circuit for wireless sensor application’. Proc. 6th Int. Conf. Electrical Engineering/Electronics Computer Telecommunications Information Technology, Pattaya, Chonburi, Thailand, 2009, pp. 278281.
    9. 9)
      • 9. Li, P., Wen, Y., Zhang, Z., et al: ‘A high-efficiency management circuit using multiwinding upconversion current transformer for power-line energy harvesting’, IEEE Trans. Ind. Electron., 2015, 62, (10), pp. 63276335.
    10. 10)
      • 8. dos Santos, M.P., Vieira, D.A., Rodriguez, Y.P.M., et al: ‘Energy harvesting using magnetic induction considering different core materials’. Proc. IEEE Int. Instrumentation Measurement Technology Conf., Montevideo, Uruguay, May 2014, pp. 942944.
    11. 11)
      • 21. Tan, Y.K., Panda, S.K.: ‘Optimized wind energy harvesting system using resistance emulator and active rectifier for wireless sensor nodes’, IEEE Trans. Power Electron., 2011, 26, (1), pp. 3850.
    12. 12)
      • 5. Zangl, H., Bretterklieber, T., Brasseur, G.: ‘A feasibility study on autonomous online condition monitoring of high-voltage overhead power lines’, IEEE Trans. Instrum. Meas., 2009, 58, (5), pp. 17891796.
    13. 13)
      • 23. Li, Y., Liu, Q., Hu, S., et al: ‘A virtual impedance comprehensive control strategy for the controllably inductive power filtering system’, IEEE Trans. Power Electron., 2017, 32, (2), pp. 920926.
    14. 14)
      • 11. Wang, W., Huang, X., Tan, L., et al: ‘Optimization design of an inductive energy harvesting device for wireless power supply system overhead high-voltage power lines’, Energies, 2016, 9, (4), p. 242.
    15. 15)
      • 22. Lee, E.W.: ‘Magnetostriction and magnetomechanical effects’, Rep. Prog. Phys., 1955, 18, (1), pp. 184229.
    16. 16)
      • 6. Moon, J., Leeb, S.B.: ‘Power electronic circuits for magnetic energy harvesters’, IEEE Trans. Power Electron., 2016, 31, (1), pp. 270279.
    17. 17)
      • 3. El-Hami, M., Glynne-Jones, P., White, N.M., et al: ‘Design and fabrication of a new vibration-based electromechanical power generator’, Sens. Actuators A, Phys., 2001, 92, (1), pp. 335342.
    18. 18)
      • 12. Bhuiyan, R.H., Dougal, R.A., Ali, M.: ‘A miniature energy harvesting device for wireless sensors in electric power system’, IEEE Sens. J., 2010, 10, (7), pp. 12491258.
    19. 19)
      • 16. ‘Overhead transmission line monitoring system brochure (2014)’. Available at, accessed 10 January 2018.
    20. 20)
      • 2. Savarimuthu, K., Sankararajan, R., Murugesan, S.: ‘Analysis and design of power conditioning circuit for piezoelectric vibration energy harvester’, IET Sci. Meas. Technol., 2017, 11, (6), pp. 723730.
    21. 21)
      • 20. Dondi, D., Bertacchini, A., Brunelli, D., et al: ‘Modeling and optimization of a solar energy harvester system for self-powered wireless sensor networks’, IEEE Trans. Ind. Electron., 2008, 55, (7), pp. 27592766.
    22. 22)
      • 1. Greenwood, D.M., Gentle, J.P., Myers, K.S., et al: ‘A comparison of real-time thermal rating systems in the US and the UK’, IEEE Trans. Power Deliv., 2014, 29, (4), pp. 18491858.
    23. 23)
      • 13. Roscoe, N.M., Judd, M.D., Fitch, J.: ‘Development of magnetic induction energy harvesting for condition monitoring’. Proc. 44th Int. Universities Power Engineering Conf., Glasgow, UK, September 2009, pp. 15.
    24. 24)
      • 4. Torres, E.O., Rincón-Mora, G.A.: ‘Electrostatic energy-harvesting and battery-charging CMOS system prototype’, IEEE Trans. Circuits Syst. I, Regul. Pap., 2009, 56, (9), pp. 19381948.

Related content

This is a required field
Please enter a valid email address