8 December, 1999 1Proportional Control Efficiencies for Wavelength Electronics MPT-2500 & HTC 1500By Craig LanningForProfessor Alex HoehnASEN 55198 December, 1999 2Overview• Efficiency Definition• Experimental Setup• Results– HTC, MPT Performance and Comparison– MPT, PWM Comparison • Discussion8 December, 1999 3Efficiency Definition%100*_*__*___==OutIOutVInIInVOutPowerInPowerEfficiency8 December, 1999 4Experimental Setup• Resistors instead of a TEC– 10.3 Ω– 100W– Hotplate• Additional Multimeter to measure Voltages8 December, 1999 5Results - MPT, HTC PerformanceMP T P e rfo rma c e0.010.020.030.040.050.060.070.080.00.00 0.50 1.00 1.50 2.00 2.50Supply Current (Amps)Effeciency28V12V9V6VHTC Pe rformance0.010.020.030.040.050.060.070.080.00.00 0.20 0.40 0.60 0.80 1.00Supply Current (Amps)Effeciency12V9V6V8 December, 1999 6Results-MPT, HTC ComparisonMPT HTC Comparison (12V Supply)0.010.020.030.040.050.060.070.080.00.00 0.20 0.40 0.60 0.80 1.00Supply Current (Amps )EffeciencyMPTHTC8 December, 1999 7Results-MPT, HTC ComparisonMPT HTC Comparison (9V Supply)0.010.020.030.040.050.060.070.00.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80Supply Current (Amps )EffeciencyMPTHTC8 December, 1999 8Results-MPT, HTC ComparisonMPT HTC Comparison (6V Supply)0.010.020.030.040.050.00.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45Supply Current (Amps )EffeciencyHTCMPT8 December, 1999 9Results-PWM, MPT ComparisonMPT PWM Comparis o n0.010.020.030.040.050.060.070.080.090.00.00 0.50 1.00 1.50 2.00 2.50Current Supply (Amps )Effeciency (%)MPTPWMPWM data provided by Charles Dumont8 December, 1999 10Discussion• Linear Efficiency Response Over Measured Range for MPT and HTC– Better Efficiencies for Lower Supply Voltages– HTC Has Better Efficiencies ONLY for Low Supply Voltages (9V & 6V)•PWM
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