Can an induction machine be designed with a single phase stator and a wound 3phase rotor?
I have been interested in small/home made wind power for many years. There are lots of folks building fairly powerful turbines from scratch. (hand carved wooden blades, axial flux permanent magnet generators). But, you need a pricey inverter to take that DC and put it back on the grid. There is at least one company that will sell you parts for a system that uses a standard induction motor for a generator and a very simple controller w/ contactor to tie it to the grid. There are lots of companies selling expensive versions of the permanent magnet variety. A few selling non DIY induction motor turbines with gear boxes etc. I think that an induction generator with a wound rotor that is controlled by an off the shelf frequency drive would be a useful addition to the above arena. The goal would be a system that could be connected to a standard house service, 220v single phase. Only one company that I could find makes a single phase output drive. It isn't large enough for my system goal of 6-10kw. There are however, many vfd's that accept single phase power and produce 3 phase power.
I am currently imagining that the above is possible if the right ratio of poles are selected between the rotor and stator.
I have been interested in small/home made wind power for many years. There are lots of folks building fairly powerful turbines from scratch. (hand carved wooden blades, axial flux permanent magnet generators). But, you need a pricey inverter to take that DC and put it back on the grid. There is at least one company that will sell you parts for a system that uses a standard induction motor for a generator and a very simple controller w/ contactor to tie it to the grid. There are lots of companies selling expensive versions of the permanent magnet variety. A few selling non DIY induction motor turbines with gear boxes etc. I think that an induction generator with a wound rotor that is controlled by an off the shelf frequency drive would be a useful addition to the above arena. The goal would be a system that could be connected to a standard house service, 220v single phase. Only one company that I could find makes a single phase output drive. It isn't large enough for my system goal of 6-10kw. There are however, many vfd's that accept single phase power and produce 3 phase power.
I am currently imagining that the above is possible if the right ratio of poles are selected between the rotor and stator.