Brushless DC Motor Operation in Generator Mode for Wind Turbine Generator
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Abstract
In this study, the researchers presented finding the performance of the brushless DC motor while working as a generator without modifying any elements in the motor to find the characteristics of operation in generator mode. The relationships between shaft speed, output voltage, current, power, and torque were tested in the laboratory. Because the brushless DC motor is three-phase, a three-phase diode bridge rectifier converted AC into DC electricity to determine the brushless DC motor's features as generator mode operation. Tested at a constant speed of 900 rpm at different loads ranging from 0.5 ohms to 15 ohms, it was discovered that as loading resistance increased, current decreased, and the voltage from the diode bridge rectifier increased. When tested at a fixed load of 7 ohms with speed changes ranging from 100 to 900 rpm. It was found that as the speed increased, the voltage and current increased in direct proportion to the speed. Experiments at different speeds showed that as the speed increased, it generated more power. At a speed of 900 rpm. It has an output voltage of 16.61 volts, an output current of 2.31 amps, and a maximum power output of 38.36 watts. At a speed of 900 rpm. The 15 ohm resistance load has an output voltage of 25.72 volts and an output current of 1.72 amps, providing a power output of 44.23 watts. With increased rotational speed, the generator becomes more efficient
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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