EE 237: Solar Energy Conversion Week 6: Module Level Issues ...
EE 237: Solar Energy Conversion Week 6: Module Level Issues Microinvertor Limit to light concentration May 8th 2013 tanford University
1
Nominal Operating Cell Temperature
http://www.pveducation.org
tanford University
EE 237 : Aneesh Nainani
2
Mismatched cell in parallel
tanford University
EE 237 : Aneesh Nainani
3
Mismatched cell in parallel
Quick hack
tanford University
EE 237 : Aneesh Nainani
4
Mismatched cell in series
tanford University
EE 237 : Aneesh Nainani
5
Mismatched cell in series
Quick hack
tanford University
EE 237 : Aneesh Nainani
6
Hotspot heating
tanford University
EE 237 : Aneesh Nainani
7
Bypass diode
tanford University
EE 237 : Aneesh Nainani
8
Bypass diode
tanford University
EE 237 : Aneesh Nainani
9
Bypass diode
tanford University
EE 237 : Aneesh Nainani
10
Shadowing / Soiling
tanford University
EE 237 : Aneesh Nainani
11
Effect of soiling
tanford University
EE 237 : Aneesh Nainani
12
Effect of shadowing: BIPV
tanford University
EE 237 : Aneesh Nainani
13
BIPV
tanford University
EE 237 : Aneesh Nainani
14
BIPV
tanford University
EE 237 : Aneesh Nainani
15
tanford University
EE 237 : Aneesh Nainani
16
tanford University
EE 237 : Aneesh Nainani
17
tanford University
EE 237 : Aneesh Nainani
18
tanford University
EE 237 : Aneesh Nainani
19
Shading: Tilt and Orientation
tanford University
EE 237 : Aneesh Nainani
20
Shading: Tilt and Orientation
tanford University
EE 237 : Aneesh Nainani
21
Quiz: which orientation is better ?
tanford University
EE 237 : Aneesh Nainani
22
Microinverters
tanford University
EE 237 : Aneesh Nainani
23
Inverter basics
tanford University
EE 237 : Aneesh Nainani
24
Invertor block diagram
tanford University
EE 237 : Aneesh Nainani
25
tanford University
EE 237 : Aneesh Nainani
26
tanford University
EE 237 : Aneesh Nainani
27
Quiz: micro-inverter vs. inverter
Central inverter
tanford University
Micro-inverter
EE 237 : Aneesh Nainani
28
Quiz: micro-inverter vs. inverter
Central inverter
Micro-inverter
• Cheap • Can be accessed easily for maintenance
• No panel matching • Higher energy yield of system
• Fixed capacity (cannot add more panels as needed)
• Panel string matching tanford University
• High cost (40c/Wp) • Not easily accessible for maintenance
EE 237 : Aneesh Nainani
29
tanford University
EE 237 : Aneesh Nainani
30
tanford University
EE 237 : Aneesh Nainani
31
High voltage DC
tanford University
EE 237 : Aneesh Nainani
32
Smart Grid
tanford University
EE 237 : Aneesh Nainani
33
Resources • Recombination Mechanisms • Solar Cell Device Physics, Chapter 2 • http://bit.ly/ZuvNVL
• Module Design and Issues • Bad cells, bypass diode etc. • Applied Photovoltaic, Chapter 5 • http://bit.ly/115DsyO • Shading, micro-invertor etc. • Handbook of photovoltaics, Chapter 19 • http://bit.ly/XPtTQg • Smart Grid articles • http://spectrum.ieee.org/energy/the-smarter-grid tanford University
EE 237 : Aneesh Nainani
34
1
Nominal Operating Cell Temperature
http://www.pveducation.org
tanford University
EE 237 : Aneesh Nainani
2
Mismatched cell in parallel
tanford University
EE 237 : Aneesh Nainani
3
Mismatched cell in parallel
Quick hack
tanford University
EE 237 : Aneesh Nainani
4
Mismatched cell in series
tanford University
EE 237 : Aneesh Nainani
5
Mismatched cell in series
Quick hack
tanford University
EE 237 : Aneesh Nainani
6
Hotspot heating
tanford University
EE 237 : Aneesh Nainani
7
Bypass diode
tanford University
EE 237 : Aneesh Nainani
8
Bypass diode
tanford University
EE 237 : Aneesh Nainani
9
Bypass diode
tanford University
EE 237 : Aneesh Nainani
10
Shadowing / Soiling
tanford University
EE 237 : Aneesh Nainani
11
Effect of soiling
tanford University
EE 237 : Aneesh Nainani
12
Effect of shadowing: BIPV
tanford University
EE 237 : Aneesh Nainani
13
BIPV
tanford University
EE 237 : Aneesh Nainani
14
BIPV
tanford University
EE 237 : Aneesh Nainani
15
tanford University
EE 237 : Aneesh Nainani
16
tanford University
EE 237 : Aneesh Nainani
17
tanford University
EE 237 : Aneesh Nainani
18
tanford University
EE 237 : Aneesh Nainani
19
Shading: Tilt and Orientation
tanford University
EE 237 : Aneesh Nainani
20
Shading: Tilt and Orientation
tanford University
EE 237 : Aneesh Nainani
21
Quiz: which orientation is better ?
tanford University
EE 237 : Aneesh Nainani
22
Microinverters
tanford University
EE 237 : Aneesh Nainani
23
Inverter basics
tanford University
EE 237 : Aneesh Nainani
24
Invertor block diagram
tanford University
EE 237 : Aneesh Nainani
25
tanford University
EE 237 : Aneesh Nainani
26
tanford University
EE 237 : Aneesh Nainani
27
Quiz: micro-inverter vs. inverter
Central inverter
tanford University
Micro-inverter
EE 237 : Aneesh Nainani
28
Quiz: micro-inverter vs. inverter
Central inverter
Micro-inverter
• Cheap • Can be accessed easily for maintenance
• No panel matching • Higher energy yield of system
• Fixed capacity (cannot add more panels as needed)
• Panel string matching tanford University
• High cost (40c/Wp) • Not easily accessible for maintenance
EE 237 : Aneesh Nainani
29
tanford University
EE 237 : Aneesh Nainani
30
tanford University
EE 237 : Aneesh Nainani
31
High voltage DC
tanford University
EE 237 : Aneesh Nainani
32
Smart Grid
tanford University
EE 237 : Aneesh Nainani
33
Resources • Recombination Mechanisms • Solar Cell Device Physics, Chapter 2 • http://bit.ly/ZuvNVL
• Module Design and Issues • Bad cells, bypass diode etc. • Applied Photovoltaic, Chapter 5 • http://bit.ly/115DsyO • Shading, micro-invertor etc. • Handbook of photovoltaics, Chapter 19 • http://bit.ly/XPtTQg • Smart Grid articles • http://spectrum.ieee.org/energy/the-smarter-grid tanford University
EE 237 : Aneesh Nainani
34
