Electronics > Power/Renewable Energy/EV's

How much of a markup do high end inverters and stuff for solar panels have?

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David Hess:
There are many examples online which show what is involved and lots of different topologies depending on the required power level.  It usually comes down to a boost converter to produce a high voltage DC bus and then an inverter suitable for generating a controlled current output:

http://solar.smps.us/grid-tie-inverter-schematic.html
http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/CD00253868.pdf
http://www.st.com/resource/en/application_note/dm00050692.pdf

TI and Microchip have micro-inverter examples which use one current output switching stage with an SCR bridge on the output to produce AC:

http://www.ti.com/lit/an/sprabt0/sprabt0.pdf
http://www.microchip.com/stellent/groups/SiteComm_sg/documents/DeviceDoc/en550277.pdf

woodchips:
Wouldn't it be easier as a one off to simply get a large DC motor driving an induction motor as an induction generator?

Sure, the efficiency will be 80% but it is all very simple technology, and the parts are both easily obtained and cheap.

CopperCone:
Yea i thought about that but over a decade that 15% per year starts to eat away at your soul a bit

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