Green Energy technology - Split-pi buck/boost control.

the efficiency looks really good but that thing is pretty giant even if it is 1200w. Id be interested in how much is costs.
 
Miles said:
Ref: http://www.endless-sphere.com/forums/viewtopic.php?f=1&t=6944
Click to expand...

Thanks for the link. I missed that discussion. Increadibly useful looking product, and judging by the split-pi explanaton on wikipedia not as impossibly complex as you would think. I reckon this approach can be used as a universal motor controller, readlly scalable and so efficient. It so looks like the right tool for the job! :mrgreen:
 
The Cuk converter has been more interesting to me for motor drive applications. Simpler, and allows the same bi-directional voltage conversion when two MOSFETs are used, and also has continuous input and output current. It does invert the output voltage, but that's easy to design around. Personally I'd have used the DC motor the converter is driving as the output inductor, capacitor, and load. With this type of design the only added part over the typical Chinese DC motor controller is a large power inductor.

My two bits,
Lawson
 
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