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. 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 cost-effective and high-quality 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 A-grade 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 （2022-2023 Version）in 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 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: www.fet.discoveree.io/datasheet.php?view=pdf&file=… www.magnachip.com/wp-content/uploads/2020/10/MBQ40… www.lcsc.com/datasheet/lcsc_datasheet_2209081730_W… wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2211151… ADVchip DSP: file.elecfans.com/web2/M00/6F/21/poYBAGNEwS-AKpNeA… AVP32F335 DSP: advancechip.com/mobile/32fd/61.html Fraunhofer ISE Successful in Patent Infringement Process for HERIC Inverter Technology: www.ise.fraunhofer.de/en/press-media/press-release… Forum: www.eevblog.com/forum/blog/eevblog-1620-deye-solar… If you find my videos useful you may consider supporting the EEVblog on Patreon: www.patreon.com/eevblog Or with crypto: BTC: 33BsprBQNBtHuVzVwDmqWkpDjYnCouwASM ETH: 0x68114e40ff4dcdd384750500501e20acf3875f8c BCH: 35n9KBPw9T7M3NGzpS3t4nUYEf9HbRmkm4 USDC: 0x68114e40ff4dcdd384750500501e20acf3875f8c LTC: MJfK57ujxy55su4XicVGQc9wcEJf6mAoXF Web Site: www.eevblog.com/ Store: eevblog.store/ Other channels: EEVblog2: youtube.com/EEVblog2 EEVdiscover: youtube.com/eevdiscover T-Shirts: teespring.com/stores/eevblog #ElectronicsCreators #solarinverter #Teardown

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