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Showing results 1 to 11 of 11
Search took 0.00 seconds. Search: Posts Made By: Matthew Dobrski
Forum: Electrical: Batteries, Generators & Solar 23-11-2014, 18:16
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

IMO this is "mission impossible", at least for now. The physics and chemistry of photovoltaic phenomenon is known for quite some time and there's no sign of radically new, way more efficient...
Forum: Electrical: Batteries, Generators & Solar 21-11-2014, 22:47
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Well, not really, dear a64pilot. See, the pair of Torqeedo Cruise 2.0 electric motors I have can push my boat efficiently at full throttle, but 4kW drain will empty no matter how huge battery bank in...
Forum: Electrical: Batteries, Generators & Solar 21-11-2014, 22:08
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Can't help but to post this pic. How do you call this weather?:smile:

Matthew.
Forum: Electrical: Batteries, Generators & Solar 21-11-2014, 22:00
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Dear dlymn,

But true, If one can rely on build-in display with GPS measured speed and power consumption. The power/speed curvature is of relatively low climbing slope until some 8-9 km/h, after...
Forum: Electrical: Batteries, Generators & Solar 21-11-2014, 21:05
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Whoa, my friend! This is not just a clunky floating house, she's making good 300-400 miles around during boating season. The weather is not always polite and sometimes I must push this toy against 50...
Forum: Electrical: Batteries, Generators & Solar 20-11-2014, 23:44
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

I believe a couple of pics may throw a bit more light on my project. Firstly, the vessel is designed and built from scratch for prolonged expeditions into British Columbia interior wilderness,...
Forum: Electrical: Batteries, Generators & Solar 20-11-2014, 21:47
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Dear SunDevil, thanks for suggestions. I may be able to squeeze perhaps 1250W of total Pmax output from upgraded array, without turning the boat into grotesque solar panels carrier. The future...
Forum: Electrical: Batteries, Generators & Solar 20-11-2014, 18:53
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Yes, more or less. To be exact 500W average output will suit me well. Taking Pmax value (specified maximum power produced by PV module under standard conditions) multiplied by number of panels in an...
Forum: Electrical: Batteries, Generators & Solar 20-11-2014, 12:58
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Dear dlymm, the efficiency of my electric propulsion is already confirmed and I'm happy with 6-7 km/hr average speed consuming 500W of power during calm day. Although it is not a seaworthy vessel, it...
Forum: Electrical: Batteries, Generators & Solar 19-11-2014, 23:02
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Re: Solar-Battery Load: Perfect Balance

Indeed, but this is only alternative propulsion for relaxing slow driving, more like trolling. I can make 7-8 knots pushing the throttle whenever I need to, but that's not the goal. At full throttle...
Forum: Electrical: Batteries, Generators & Solar 19-11-2014, 22:12
Replies: 24
Views: 5,412
Posted By Matthew Dobrski
Solar-Battery Load: Perfect Balance

The goal is to provide enough solar energy to power 24V electric propulsion, draining average 500W. My guess is I'll need approx. 1kW of theoretical max. PV power into MPPT controller charging 200Ah...
Showing results 1 to 11 of 11

 
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