EEVblog 1620 - Deye Solar Hybrid Inverter EXTREME TEARDOWN

Extreme teardown of the Deye SUN-5K-SG04LP1 5kW hybrid solar inverter.
Will it contain the quality components claimed?
Also a topology reverse engineering of all the stages.

00:00 - A generous and coincidental donation from a viewer
00:37 - We have the brochure, let's check the claims!
02:44 - Front panel PCB
03:46 - The gigantic heatsink
04:44 - Nippon Chemi-Con Capacitors? REALLY?
05:54 - Heatsunk and potted inductors and transformer teardown
10:19 - Main PCB's and the confusing layout
12:53 - The fused battery input
13:37 - Are the MOSFET's and IGBT's as advertised?
15:10 - SMD high current links for PnP benefits
16:14 - Detailed circuit topology schematic reverse engineering
18:29 - Earth connection testing
19:07 - MOSFET vs IGBT
19:51 - Grid side IGBT switching and tri-level switching
20:46 - Solar Panels are capacitors to earth and that screws the CMRR
21:34 - HERIC switching topology and patent lawsuits!
23:50 - Grid and Load connections
25:07 - The battery bidirectional DC-DC converter
28:14 - H-Bridge and parallelism
30:14 - Switching drive stages
31:25 - Main processor PCB and a TI DSP ripoff?
32:51 - Redundant backup DSP controller?
34:40 - Genrator and Load conection relay switching
35:49 - Panasonic Relays? WHERE?
37:02 - User Connection PCB
38:25 - Conclusion

Datasheets:
https://www.fet.discoveree.io/datasheet.php?view=pdf&file=crmicro/crsq027n10n.pdf
https://www.magnachip.com/wp-content/uploads/2020/10/MBQ40T65QES-1.pdf
https://www.lcsc.com/datasheet/lcsc_datasheet_2209081730_Wuxi-NCE-Power-Semiconductor-NCE40TS120VTP_C5160411.pdf
https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2211151030_Vishay-Intertech-VS-EPX3007L-N3_C5263741.pdf
ADVchip DSP: https://file.elecfans.com/web2/M00/6F/21/poYBAGNEwS-AKpNeAIfcFmyDrAQ938.pdf
AVP32F335 DSP: http://advancechip.com/mobile/32fd/61.html
Fraunhofer ISE Successful in Patent Infringement Process for HERIC Inverter Technology:
https://www.ise.fraunhofer.de/en/press-media/press-releases/2022/fraunhofer-ise-successful-in-patent-infringement-process-for-inverter-technology.html

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#ElectronicsCreators #solarinverter #Teardown
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https://www.youtube.com/watch?v=n0_cTg36A2Q