Monthly Archives: Monday May 25th, 2009

New control unit for Volvox generator

Posted on Monday May 25th, 2009 by stephen

The Volvox generator didn’t arrive with a microprocessor based control unit; instead it had a number of discrete circuits to provide the required functions. Basically, the control unit should: Start the generator from a remote switch Stop the generator if … Continue reading →

Posted in Off grid power | 1 Comment

Generator exhaust expansion chamber

Posted on Sunday May 17th, 2009 by stephen

Hopefully this will attenuate the noise of the vegetable oil generator exhaust even more. The chamber itself will be buried up to the three exhaust holes. The blocks on top are to retain the soil that will cover the roof … Continue reading →

Posted in Building, Energy efficiency, Off grid power | Tagged , | Leave a comment

SMA Sunny Island AC Coupling

Posted on Wednesday May 13th, 2009 by stephen

Designing off-grid wind and solar installations differs from grid tied installations in a number of important ways such as: The solar array must be in a certain restricted voltage range The solar and/or wind generator must be kept very close … Continue reading →

Posted in Off grid power, Solar power | Tagged , , , | 13 Comments