Abstract:
The aims of this thesis were to design and study a Permanent Magnet Synchronous
Generator (PMSG) for a grid connected 10 kW low-wind speed wind turbine (2-5 m/s).
The study also included an analysis of the integration of Continuously Variable
Transmission (CVT) Gear with PMSG and wind turbine. A PMSG was designed and
built with the following characteristics: 10 kW, 380 V, 50 Hz, 46 poles and a
synchronous speed of 130 rpm. The PMSG laboratory tests were coducted under two
conditions, namely, grid connected and off-grid. The off-grid test results showed that
the PMSG produced a line-neutral of 240 V at 50 Hz when the synchronous speed was
130 rpm. The PMSG could produce the maximum electrical power of 6.8 kW when it
was grid-connected, which was lower than the desired generator output. The use of the
CVT gear jin integration with the PMSG was studied and the results showed that it was
not suitable. This is because the CVT gears available in Thailand do not offer a suitable
range of gear ratio, resulting in a high cut-in wind speed for the wind turbine. This is not
suitable for use in Thailand where the general wind speed is low.