| 摘要 |
Generator and Motor Ventilator - applied Natural Roof Ventilator for having space to install generating electric power set in permanent magnetic type at inner ring and Inductance is installed immovably at outer ring. When has wind speed making natural roof ventilator rotate, 3 phase alternating current will be produced. Connecting alternating current to Inductance and to Rectifier for convert to direct current and having Capacitor connected in parallel with direct current for storing energy while no charging occured. To make higher voltage, connect to switch which open-close circuit by using MOSFET as switch and controlling by Microcontroller for charging into battery. Microcontroller will detect between voltage of direct current producing by Generator and Motor Ventilator and voltage from battery. If voltage of direct current which been generated from Generator and Motor Ventilator is higher than appropriate level, charging into battery is occur. If voltage of direct current from Generator and Motor Ventilator is lower than voltage from battery or no wind made no rotation or low wind speed made less rotation which mean generating less electricity. Microcontroller will evaluate and command switch open-close circuit by using MOSFET as a switch for charging to stop working. Therefore, that switch will open circuit, to supply electric current pass switch functioning in rectifier 3 phase type working alternately as inverter to Inductance of electrical generator for working like a motor. Thereby, Natural Roof Ventilator can rotate and ventilate air when less or no wind speeds. |
