Eelectric Energy Harvesting Through Piezoelectric Polymers Progress Report - April 29 Don Jenket, II Kathy Li Peter Stone.

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Presentation transcript:

Eelectric Energy Harvesting Through Piezoelectric Polymers Progress Report - April 29 Don Jenket, II Kathy Li Peter Stone

Progress Report April 29, 2004Eelectric Presentation Overview Changes to Design Quantitative Analysis of Tail Troubleshooting Revised Timeline

Progress Report April 29, 2004Eelectric Tail Schematic Copper Wire Mylar Tape Silver Paste Electrode PVDF 2 cm 12 cm

Progress Report April 29, 2004Eelectric Oscillation Frequency Fan Off Fan On

Progress Report April 29, 2004Eelectric Tail Capacitance C = e A/d A = 7.5 * m 2 e (at < 0.1 kHz) = 11.5e o ±10% d = 4 *10 -5 m Calculated Capacitance Lower bound: 1719 pF Upper bound: 2099 pF Median: 1910 pF Capacitance Measured at 10 Hz: 1940 pF

Progress Report April 29, 2004Eelectric Tail Power Output Resistance (  ) Peak Voltage Amplitude (mV) Power = V 2 /R (nW)

Progress Report April 29, 2004Eelectric Current Resistance (  ) Voltage (mV) Current (  A)

Progress Report April 29, 2004Eelectric Troubleshooting Series Connection to Increase Voltage Succeeded in connecting two tails in series mV amplitude in series compared with 300 mV for a single tail Increase Current Connect tails in parallel Decrease the overall circuit Impedance Measure the Circuit Impedance Accurate prediction of current Impedance of the circuit varies nonlinearly with current

Progress Report April 29, 2004Eelectric Revised Timeline