Extreme teardown of the Deye SUN5KSG04LP1 5kW hybrid solar inverter.
Will it contain the quality components claimed?
Also a topology reverse engineering of all the stages.

UPDATE: Deye have responded and asked me to make this post:

"As an employee of Deye in Australia, I would like to address this issue with complete transparency. Deye, as a globally leading manufacturer of energy storage inverters, has always been committed to providing our customers with costeffective and highquality products. Our product failure rates are relatively low compared to our peers in the industry.

During the past couple of years, the pandemic caused significant supply chain challenges, making it difficult to procure certain components while the demand for energy storage solutions surged. To ensure continuous product supply, we had to use alternative components. Please rest assured that all these alternative components are Agrade and have undergone rigorous testing to meet industry standards and certification requirements.

The inconsistency between the components in our products and those mentioned in our catalog is due to our failure to update the catalog 20222023 Versionin a timely manner. We sincerely apologize for this oversight. We have taken immediate steps to rectify this and will update our catalog as soon as possible._ "

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 ChemiCon 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 trilevel 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 DCDC converter
28:14 HBridge 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/datashe...
https://www.magnachip.com/wpcontent/...
https://www.lcsc.com/datasheet/lcsc_d...
https://wmsc.lcsc.com/wmsc/upload/fil...
ADVchip DSP: https://file.elecfans.com/web2/M00/6F...
AVP32F335 DSP: http://advancechip.com/mobile/32fd/61...
Fraunhofer ISE Successful in Patent Infringement Process for HERIC Inverter Technology:
https://www.ise.fraunhofer.de/en/pres...

Forum: https://www.eevblog.com/forum/blog/ee...

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