Adaptive piezoelectric energy harvesting circuit for wireless remote power supply

@article{citeulike:423773, abstract = {This paper describes an approach to harvesting electrical energy from a mechanically excited piezoelectric element. A vibrating piezoelectric device differs from a typical electrical power source in that it has a capacitive rather than inductive source impedance, and may be driven by mechanical vibrations of varying amplitude. An analytical expression for the optimal power flow from a rectified piezoelectric device is derived, and an "energy harvesting" circuit is proposed which can achieve this optimal power flow. The harvesting circuit consists of an AC-DC rectifier with an output capacitor, an electrochemical battery, and a switch-mode DC-DC converter that controls the energy flow into the battery. An adaptive control technique for the DC-DC converter is used to continuously implement the optimal power transfer theory and maximize the power stored by the battery. Experimental results reveal that use of the adaptive DC-DC converter increases power transfer by over 400\% as compared to when the DC-DC converter is not used.}, author = {Ottman, G. K. and Hofmann, H. F. and Bhatt, A. C. and Lesieutre, G. A. }, citeulike-article-id = {423773}, journal = {Power Electronics, IEEE Transactions on}, keywords = {electronics, harvesting, piezoelectric, power, wireless}, number = {5}, pages = {669--676}, posted-at = {2005-12-06 22:53:30}, priority = {3}, title = {Adaptive piezoelectric energy harvesting circuit for wireless remote power supply}, url = {http://ieeexplore.ieee.org/xpls/abs\_all.jsp?arnumber=1035141}, volume = {17}, year = {2002} }

TY - JOUR ID - citeulike:423773 L3 - citeulike-article-id:423773 N2 - This paper describes an approach to harvesting electrical energy from a mechanically excited piezoelectric element. A vibrating piezoelectric device differs from a typical electrical power source in that it has a capacitive rather than inductive source impedance, and may be driven by mechanical vibrations of varying amplitude. An analytical expression for the optimal power flow from a rectified piezoelectric device is derived, and an "energy harvesting" circuit is proposed which can achieve this optimal power flow. The harvesting circuit consists of an AC-DC rectifier with an output capacitor, an electrochemical battery, and a switch-mode DC-DC converter that controls the energy flow into the battery. An adaptive control technique for the DC-DC converter is used to continuously implement the optimal power transfer theory and maximize the power stored by the battery. Experimental results reveal that use of the adaptive DC-DC converter increases power transfer by over 400% as compared to when the DC-DC converter is not used. IS - 5 JF - Power Electronics, IEEE Transactions on EP - 676 TI - Adaptive piezoelectric energy harvesting circuit for wireless remote power supply VL - 17 SP - 669 KW - electronics KW - harvesting KW - piezoelectric KW - power KW - wireless AU - Ottman, GK AU - Hofmann, HF AU - Bhatt, AC AU - Lesieutre, GA PY - 2002/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1035141 ER -