| Summary: | 碩士 === 正修科技大學 === 電機工程研究所 === 99 === The thesis develops renewable energy generators which can transform wind and wave energy into electric energy. The generator structure embedded in the roof thermal fan is the thermal wind generator (TWG), which can be driven by the wind and air thermal convection to convert wind energy into electricity. The other renewable energy device is wave generator system (WGS). The WGS can change wave energy into electricity by integrating float balls, levers, chains and ratchet wheels. Furthermore, when the TWG develops, many problems, such as three phase voltage balance, start torque reduction and two kind power source, will occur. The thesis proposes many methods to deal with them as well. Besides, the WGS can solve the problems of the gear reverse and power transmission time lapse, and develop the system of power driven combinations.
Exhaust machine is used to simulate the nature wind and thermal convection to the TWG in the case studies. The wind speed test is from 1 meter/second to 5 meters/second and each step is 1 meter/second. Natural wind, thermal convection and the two power combinations are used in the case studies. Each voltage, current, speed and power response of TWG is recorded during the test period. For the WGS, the wave heights from 2.5 to 10 cm are simulated to give an impetus to drive the float ball.
The cases studies demonstrate that the TWG can be started at 4 m/s wind speed. The highest speed can reach 121 rpm. Total power output of TWG is 0.89 W at 0.92 power factor. The generator can be started on the 5 cm-height wave for the WGS and the highest power output can reach 0.44W at 40.6 rpm speed. The researches show that two power combinations can promote generator power output indeed.
|
|---|
