압전 진동 에너지 수확 장치의 에너지 변환 효율에 대한 고찰

On the Energy Conversion Efficiency of Piezoelectric Vibration Energy Harvesting Devices

  • 김재은 (대구가톨릭대학교 기계자동차공학부)
  • Kim, Jae Eun (School of Mechanical and Automotive Engineering, Catholic Univ. of Daegu)
  • 투고 : 2015.01.23
  • 심사 : 2015.02.27
  • 발행 : 2015.05.01


압전 진동 에너지 수확 장치의 설계 및 성능 평가 시 에너지 변환 효율을 고려하는 것은 매우 당연하다. 본 연구에서 고려하는 에너지 변환 효율은 부하 저항이 부착된 압전 진동 에너지 수확 장치에 입력되는 가진 진동 파워 대비 전기 출력 값으로 정의된다. 기존의 연구에서는 근사적으로 임피던스 정합된 부하 저항에서의 전기 출력을 고려한 반면, 본 연구에서는 최적의 임피던스 정합 값을 사용하여 새롭게 에너지 변환 효율 식을 유도하였다. 유도된 식의 타당성을 검증하기 위해 3 개의 서로 다른 전기-역학 연성 계수 값을 갖는 진동 에너지 수확 장치에 대한 유한 요소 해석 결과를 이용하였다. 또한, 부하 저항의 임피던스 정합 방법의 차이에 따른 에너지 변환 및 변환 효율 특성을 살펴보았다.


진동;에너지 수확;압전;변환효율;임피던스 정합;전기-역학 연성 계수


연구 과제 주관 기관 : 대구가톨릭대학교


  1. Roundy, S., Wright, P. K. and Rabaey, J., 2003, "A Study of Low Level Vibrations as a Power Sources for Wireless Sensor Nodes," Computer Communications, Vol. 26, No. 11, pp. 1131-1144.
  2. Cook-Chennault, K. A., Thambj, N. and Sastry, A. M., 2008, "Powering MEMS Portable Devices-A Review of Non-regenerative and Regenerative Power Supply Systems with Special Emphasis on Piezoelectric Energy Harvesting Systems," Smart Materials and Structures, Vol. 17, No. 4, 043001.
  3. Meninger, S., Mur-Miranda, J. O., Amirtharajah, R., Chandrakasan, A. P. and Lang, J. H., 2001, "Vibrationto-Electric Energy Conversion," IEEE Transactions on VLSI Systems, Vol. 9, No. 1, pp. 64-76.
  4. El-hami, M., Glynne-Jones, P., Whilte, N. M., Hill, M., Beeby, S., James, E., Brown, A. D. and Ross, J. N., 2001, "Design and Fabrication of a New Vibration- Based Electromechanical Power Generator," Sensors and Actuators A, Vol. 92, No. 1-3, pp. 335-342.
  5. Roundy, S. and Wright, P. K., 2004, "A Piezoelectric Vibration Based Generator for Wireless Electronics," Smart Materials and Structures, Vol. 13, No. 5, pp. 1131-1142.
  6. Mitcheson, P. D., Green, T. C., Yeatsman, E. M. and Holmes, A. S., 2004, "Architectures for Vibration- Driven Micropower Generators," Journal of Microelectromechanical Systems, Vol. 13, No. 3, pp. 429-440.
  7. Stephen, N. G., 2006, "On Energy Harvesting from Ambient Vibration," Journal of Sound and Vibration, Vol. 293, No. 1-2, pp. 409-425.
  8. Kim, J. E. and Kim, Y. Y., 2011, "Analysis of Piezoelectric Energy Harvesters of a Moderate Aspect Ratio with a Distributed Tip Mass," ASME Journal of Vibration and Acoustics, Vol. 133, No. 4, 041010.
  9. Roundy, S., 2005, "On the Effectiveness of Vibrationbased Energy Harvesting," Journal of Intelligent Material Systems and Structures, Vol. 16, No. 10, pp. 809-823.
  10. Gilbert, J. M. and Balouchi, F., 2008, "Comparison of Energy Harvesting Systems for Wireless Sensor Networks," International Journal of Automation and Computing, Vol. 5, No. 4, pp. 334-347.
  11. Kim, J. E., 2010, "Design of a Vibration-Powered Piezoelectric Energy-Harvesting Module by Considering Variations in Excitation Frequency," Trans. Korean Soc. Mech. Eng. A, Vol. 34, No. 5, pp. 637-644.
  12. Erturk, A. and Inman, D. J., 2011, Piezoelectric Energy Harvesting, Wiley, United Kingdom.
  13. Kim, J. E., 2013, "Performance Study of Diagonally Segmented Piezoelectric Vibration Energy Harvester," Trans. Korean Soc. Mech. Eng. A, Vol. 37, No. 8, pp. 983-989.
  14. Umeda, M., Nakamura, K. and Ueha, S., 1997, "Energy Storage Characteristics of a Piezo-Generator using Impact Induced Vibration," Japanese Journal of Applied Physics, Vol. 36, No. 5B, pp. 3146-3151.
  15. Goldfarb, M. and Jones, L. D., 1999, "On the Efficiency of Electric Power Generation with Piezoelectric Ceramic," ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 121, No. 3, pp. 566-571.
  16. Richards, C. D., Anderson M. J., Bahr, D. F. and Richards, R. F., 2004, "Efficiency of Energy Conversion for Devices Containing a Piezoelectric Component," Journal of Micromechanics and Microengineering, Vol. 14, No. 5, pp. 717-721.
  17. Sodano, H., Inman, D. J. and Park, G., 2005, "Comparison of Piezoelectric Energy Harvesting Devices for Recharging Batteries," Journal of Intelligent Material Systems and Structures, Vol. 16, No. 10, pp. 799-807.
  18. Shu, Y. C. and Lien, I. C., 2006, "Efficiency of Energy Conversion for a Piezoelectric Power Harvesting System," Journal of Micromechanics and Microengineering, Vol. 16, No. 11, pp. 2429-2438.
  19. Harne, R. L., 2012, "Theoretical Investigation of Energy Harvesting Efficiency from Structural Vibrations Using Piezoelectric and Electromagnetic Oscillators," The Journal of the Acoustical Society of America, Vol. 132, No. 1, pp. 162-172.
  20. Erturk, A. and Inman, D. J., 2008, "Issues in Mathematical Modeling of Piezoelectric Energy Harvesters," Smart Materials and Structures, Vol. 17, No. 6, 065016.
  21. Kim, J. E., 2010, "Analysis of Vibration-powered Piezoelectric Energy Harvesters by Using Equivalent Circuit Models," Trans. Korean Soc. Noise Vib. Eng., Vol. 20, No. 4, pp. 397-404.
  22. Piezo Systems, Inc., Catalog available from (cited on 23 January, 2015).
  23. Kim, J. E., Kim, Y.-C. and Sun, K. H., 2014, "Performance Characteristics of Vibration Energy Harvesting Using [001] and [011]-Poled PMN-PZT Single Crystals," Trans. Korean Soc. Noise Vib. Eng., Vol. 24, No. 11, pp. 890-897.
  24. Ceracomp Co., Ltd. (
  25. Stanton, S. C., Erturk, A., Mann, B. P., Dowell, E. H. and Inman, D. J., 2011, "Nonlinear Nonconservative Behavior and Modeling of Piezoelectric Energy Harvesters Including Proof Mass Effects," Journal of Intelligent Material Systems and Structures, Vol. 23, No. 2, pp. 183-199.
  26. Kim, J. E. and Kim, Y. Y., 2013, "Power Enhancing by Reversing Mode Sequence in Tuned Mass-Spring Unit Attached Vibration Energy Harvester," AIP Advances, Vol. 3, No. 7, 072103.

피인용 문헌

  1. Electrically Induced Damping Characteristics and a Relevant Requirement for the Maximum Power Generation in Piezoelectric Vibration Energy Harvesters vol.25, pp.6, 2015,
  2. New efficiency measures of energy conversion and their characterization for piezoelectric vibration energy harvesters vol.28, pp.20, 2017,