AC windturbines in Series to boost input voltage for inverter Answered
I just purchase a VAWT (Vertical Axis Wind Turbine) and an inverter. The wind turbine is rated at 24V AC, however, I see that the rated V AC is requiring quite a lot of wind to produce that Voltage. By mistake, I ordered a grid-tie inverter that starts at 22 V AC and so far I have not been able to reach the startup voltage of the inverter.
- The inverter is rated 1000W and has AC input 3 phase. It can manage up to 60V AC input.
- The VAWT is 600W 24 V AC 3 phase.
So here my questions:
Currently, I don't get any power at all, so how can I modify my setup to make this work. I have a few suggestings that I would love to get some feedback on:
Option 1: Buy a second VAWT + two rectifies that convert AC to DC. I should mention that the windmills will stand close to each other and receive more or less the same wind strength, so they should produce fairly the same amount of power. On the DC side, I would put them in series and then I would use a DC to AC converter to get the power back to AC current. The idea is that by doing this I would increase the voltage at least 22 V required by the inverter. I would expect some power loss and probably also voltage, using the rectifier and DC to AC converter.
Option 2: Same as option 1, but after the rectifier and connecting in series, buy a new inverter that can handle DC input within the range that the VAWT's produces. (W and Voltage)
Option 3: Buy a new Controller that charges a battery and connect an inverter to the battery to send power to the grid. Depended on the solution this solution might require a rectifier.
Any comment on these or maybe other options?