Vertical axis wind turbine system
Wind turbine system. The system includes a lower wind speed vertical axis wind turbine operatively connected to a first electrical motor/generator and a higher wind speed vertical axis wind turbine operatively connected to at least one second electrical motor/generator. Electrical power from the first electrical motor/generator is directed to the at least one second electrical motor/generator and mag-lev system to cause the higher wind speed turbine to begin turning. A start-up assistance subsystem which acts like a local wind accelerator and produces a positive torque to assist in the start-up of a vertical axis wind turbine is also provided.
1. The combination of:
a lift-based vertical axis wind turbine comprising a plurality of turbine blades; and
a start-up assistance subsystem, said start-up assistance subsystem comprising:
an auxiliary accelerator blade operable to create local accelerated wind zones behind said turbine blades; and
a wind direction orientation system for detecting wind direction and orienting said auxiliary blade at a desired angle of attack relative to said wind direction, wherein said start-up assistance subsystem directs said local accelerated a wind wind zones with increased speed relative to true wind speed across said turbine blades.
2. The combination of claim 1 , wherein said wind direction orientation system comprises a passive assembly.
3. The combination of claim 2 , wherein said passive assembly for detecting wind direction and orienting said auxiliary blade comprises an orienting tail operably connected with said auxiliary blade.
4. The combination of claim 1 , wherein said wind direction orientation system comprises an active assembly.
5. The combination of claim 4 , wherein said active assembly for detecting wind direction and orienting said auxiliary blade comprises a wind sensor and motor, said wind sensor detecting wind direction and transmitting an appropriate signal to said motor for orientation of said auxiliary blade at a desired angle of attack relative to said wind direction.
6. The combination of claim 1 , said vertical axis wind turbine comprising a corresponding plurality of said auxiliary blades.
7. The combination of claim 6 , wherein each of said plurality of auxiliary blades are offset relative to each of said plurality of turbine blades by respective azimuthal angles θ.
8. The combination of claim 1 , said start-up assistance subsystem further comprising:
an outer vane support ring; and
support members,
wherein said vertical axis wind turbine comprises a central shaft, said auxiliary blades being operatively connected to said outer vane support ring and said outer vane support ring being operatively connected to said central shaft via said support members.
9. The combination of claim 8 , wherein said outer vane support ring is rotatable about said central shaft, said auxiliary blades rotating circumferentially about the turbine blades with said outer vane support ring.