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Note	hello, I work at an electronics company with processors such as stm32, pic, nuvoton. We also provide electronic card design, defective card repair, etc. And I know. My reasons for entering your site are 1: To help friends who want to learn. 2: Getting help from people who are more knowledgeable than me. Thanks...

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Hello everyone, I've been working in the fields of hardware and software development for several years, with hands-on experience in circuit design, embedded systems, firmware development, and various testing methodologies. I’d like to offer my support and share my knowledge with members of this forum. If anyone needs help with troubleshooting, code review, hardware design advice, or test strategies, feel free to reach out. Looking forward to collaborating and contributing to the community!

You can also install a buck converter at the array's output and hook the inverter's PV input cables to the output of the buck converter. That will probably require a PV output voltage monitoring system and a bypass.

Just for some closure on this fault. Once we fully re-calibrated the meter this error was eliminated. So someone maybe made a cal entry error at some time.

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A comprehensive article series on subjective topic

https://www.electronicdesign.com/technologies/power/article/55286293/texas-instruments-power-electronics-evolve-for-the-era-of-high-voltage-dc-hvdc-distribution?o_eid=5207B4070834D1J&oly_enc_id=5207B4070834D1J&rdx.ident[pull]=omeda|5207B4070834D1J&utm_campaign=CPS250423223&utm_medium=email&utm_source=ED+Power+%26+Analog


https://www.electronicdesign.com/12345/whitepaper/21233720/electronic-design-factor-pfc-into-your-power-supply-design?o_eid=5207B4070834D1J&oly_enc_id=5207B4070834D1J&rdx.ident[pull]=omeda|5207B4070834D1J&utm_campaign=CPS250423223&utm_medium=email&utm_source=ED+Power+%26+Analog

https://www.electronicdesign.com/technologies/power/whitepaper/21162012/electronic-design-how-to-improve-llc-converter-power-density?o_eid=5207B4070834D1J&oly_enc_id=5207B4070834D1J&rdx.ident[pull]=omeda|5207B4070834D1J&utm_campaign=CPS250423223&utm_medium=email&utm_source=ED+Power+%26+Analog

https://www.electronicdesign.com/technologies/power/whitepaper/21183762/texas-instruments-understanding-common-isolated-power-ics-for-digital-isolation-systems?o_eid=5207B4070834D1J&oly_enc_id=5207B4070834D1J&rdx.ident[pull]=omeda|5207B4070834D1J&utm_campaign=CPS250423223&utm_medium=email&utm_source=ED+Power+%26+Analog

https://www.electronicdesign.com/technologies/power/article/55241448/electronic-design-overcoming-the-ai-power-crunch-requires-more-robust-isolation?o_eid=5207B4070834D1J&oly_enc_id=5207B4070834D1J&rdx.ident[pull]=omeda|5207B4070834D1J&utm_campaign=CPS250423223&utm_medium=email&utm_source=ED+Power+%26+Analog


sadman

I still haven't decided what to do, but found this 1000VDC variable power supply on ebay for $50:

https://www.ebay.com/itm/334503593016

The specs say it can put out 1000V @ 0.4A which should be adequate for testing this. 

https://assets.ctfassets.net/ntf98c1thwoe/1AojVLJke9WasHhTvkaMS2/184f9df025c552959ed4360400e8e0be/labconcopowersuppliesmanual1992-2007.pdf

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