I want to build my own wind turbine and connect it to the mains supply
in my house, I saw a man on television who got his meter to wind
backwards by doing this.
I obviously need an inverter connected to the ring main, but is it
safe to do this while still recieving power from my power company?
I looked at using a pure sine wave inverter from a caravan or boat,
but am not sure how I would get the inverter's output in phase with
the mains supply.
Thanks for any advice
"Adam Chapman" wrote
You want a "grid tie" system. There are plenty of inverters
designed for this purpose. The trick is the power you generate
has to sync to the power grid.
Connecting to your grid is a local legality enforced by your
power company. Depending on the local laws the power company
and politicians will decide if you can run your meter
backward, (net metering) or have a special meter installed so
they can pay you for what you put onto the grid at the legally
agreed rate (avoided cost) or whatever other profit motivated
agreement your power companies lobbyists were able to wrangle
the politicians to write into local law.
In most cases, if you are on the grid, the economics of paying
your investment back for local power generation equipment are
Looking at it another way, generating enough energy to offset
the energy used to manufacture your power generation
investment----the payback for that is in the 4-6 year range.
Paying back the financial investment and putting the extra
energy used to manufacture your investment back into the
grid-----slim to none.
Turn off lights, get CF bulbs, buy more insulation, dont run
the AC and heater so much if you want to save the world.
I'm doing it mostly for fun. I've been fiddling with the aerodynamics
using CFD code from an old uni project. I have little knowledge of
electornics, hence my visit here.
Post #18 at
mentions a method
but without a diagram it's hard to understand, there seem to be a
number of types of "H-bridge". Can anyone make sense of this? Like the
poster there, I would struggle to afford the commercially available
Also having difficulty finding out what the optimal speed is for a
permanent magnet generator, but will keep looking.