The Chinese grid tie inverters for wind turbines are actually a pretty good inverter considering their price. However a lot of people have them fail due to their dump load controller system in the unit seems to burn up. this is caused by not having the correct dump load coil on the unit. The manufacture sells the correct dump load coil to keep you from guessing. To take it a step further the units have no power curve adjustment so its a guessing game for which turbine they will actually work well with.
To take out the guess work we have come up with a controller that switches between two gti and lower unit like a 10-30 vdc 250 to a larger unit 22-60 vdc 1000 w. By doing this it allows the turbine to collect low wind energy as well as high wind energy all automaticly with our controller by switching between inverters either with our wind switch or our voltage reader. The voltage reader can be set from 0-90 vdc or the wind switch can be set from 5 mph to 40 mph. By doing this it allows your micro wind turbine to harvest the most wind energy it can by using the voltages from 10-60 vdc rather then 10-30 or 22-60. Allowing the turbine to run at a higher voltage in higher winds will keep the heat down which means again more power. The higher the voltage the less amps you need. Amps makes heat. This is a one of a kind custom built unit. We also build them for switching from a battery bank to gird tie as well.For more information leamyelectric@aol.com
