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<blockquote data-quote="Pheasant Surprise" data-source="post: 5858468" data-attributes="member: 1103"><p>What engine have you got for it?</p><p></p><p>Don’t forget the engine will need to be setup to produce the required rated power at 1500rpm, so don’t go looking at rated power at 2600rpm for instance. For a 40 kVA set the engine needs to be producing around 20% more power than that @ 1500 rpm due to mechanical losses, and the ability to hold its revs steady and maintain close to 50Hz output when you load it (or unload it)...</p><p></p><p>Most sets have a governor setup with tight “droop” control so that the set maintains its regulation within 2 to 3% of 50Hz </p><p></p><p>Have a read of <a href="http://www.woodward.com/WorkArea/DownloadAsset.aspx?id=2147483661" target="_blank">this</a> article on speed droop for diesel set governors from Woodward. They know a thing or two about governor control.</p><p></p><p>Also <a href="http://webbut.unitbv.ro/BU2014/Series%20I/BULETIN%20I%20PDF/Sandu%20V.pdf" target="_blank">this</a> article about converting general purpose vehicle diesel engines for use on gensets.</p><p></p><p>Would agree with comments above - in general it’s going to be cheaper and easier to buy a ready made set with all the controls etc ready to go. But as a “development” project it could be interesting. Good luck.</p></blockquote><p></p>
[QUOTE="Pheasant Surprise, post: 5858468, member: 1103"] What engine have you got for it? Don’t forget the engine will need to be setup to produce the required rated power at 1500rpm, so don’t go looking at rated power at 2600rpm for instance. For a 40 kVA set the engine needs to be producing around 20% more power than that @ 1500 rpm due to mechanical losses, and the ability to hold its revs steady and maintain close to 50Hz output when you load it (or unload it)... Most sets have a governor setup with tight “droop” control so that the set maintains its regulation within 2 to 3% of 50Hz Have a read of [URL='http://www.woodward.com/WorkArea/DownloadAsset.aspx?id=2147483661']this[/URL] article on speed droop for diesel set governors from Woodward. They know a thing or two about governor control. Also [URL='http://webbut.unitbv.ro/BU2014/Series%20I/BULETIN%20I%20PDF/Sandu%20V.pdf']this[/URL] article about converting general purpose vehicle diesel engines for use on gensets. Would agree with comments above - in general it’s going to be cheaper and easier to buy a ready made set with all the controls etc ready to go. But as a “development” project it could be interesting. Good luck. [/QUOTE]
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