working principle
â‘ When the ignition switch SW is just turned on, the engine does not rotate, the generator does not generate electricity, and the battery voltage is added to the voltage divider R1, R2. At this time, because the UR1 is low, the reverse breakdown of the voltage regulator VS cannot be caused, and VT1 is cut off. When VT1 is turned off, VT2 is turned on, and the magnetic field circuit of the generator is connected. At this time, the magnetic field current is supplied by the battery. As the engine starts, the speed of the generator increases, the generator separately generates electricity, and the voltage rises.
â‘¡ When the generator voltage rises above the battery voltage, the generator self-excitation generates electricity and starts to charge the external battery. If the generator output voltage UB <regulator adjustment upper limit UB2 at this time, VT1 continues to cut off, VT2 continues to conduct The magnetic field current at the time is supplied by the generator, and the generator voltage rises rapidly with the increase in speed.
â‘¢ When the generator voltage rises to be equal to the upper regulation limit UB2, the regulation of the voltage by the regulator starts. At this time, VS is turned on, VT1 is turned on, and VT2 is turned off. The generator magnetic field circuit is cut off. Because the magnetic field is cut off, the magnetic flux drops and the generator output voltage drops.
Perkins 401-999KW Diesel Generator
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Shanghai Kosta Electric Co., Ltd. , https://www.ksdpower.com