Announcements

• Dr. Costinett out of town next weekhttp://www.ieee ecce.org/2017/

• Experiment 1 during class time Monday andWednesday

Meet in MK227Complete in groups of 2 3Lab report due Oct 13th (+ HW6)

• Form team and select one day (per team)https://doodle.com/poll/imn7mfqeght9xq4z

Lab Sequence• Hands on experience testing and controlling GaN based

converter• 3 lab sequence in modeling, open loop control and analysis,

and closed loop control• Define, Design, simulate, build

Experiment 1

• Define the requirements on the powerelectronics to be designed throughout thesemester

• Characterize and find numerical parametersfor the modeling of a PV panel as a powersource

• Become familiar with use of lab equipment

Commercial Solar Cells

PV Panel Technologies

http://www.nrel.gov/ncpv/images/efficiency_chart.jpg

Solar Irradiance

Solar Indoors

Experiment 1: PV CharacterizationCharacteristic Shell ST10

Cell Strings 1Number of Cells 42

Cell Type thin-filmPeak Power 10 WPeak Voltage 25 VPeak Current 0.77 A

Photogeneration

Review of Diode Modeling

PV Cell Modeling

• PhotogenerationSemiconductor absorbs photons if hf > Egap

Simple PV Cell Equivalent Circuit

PV Panel

Effect of Shading

PV Hot Spotting

LTSpice Modeling

Resources

• Review of semiconductor physicshttp://potenntial.eecs.utk.edu/About.php?topic=PowerSemiconductors

• LTSpicehttp://www.linear.com/designtools/software/http://ltwiki.org/LTspiceHelp/LTspiceHelp/D_Diode.htm

• Shell ST 10 Solar Panelhttp://www.solarelectricsupply.com/shell st10605