Where is the surplus electricity from the diesel generator
Published:
2023-03-17
The generator is driven by a diesel engine. When connected to a useful electrical appliance, the internal coil of the generator and the external electrical appliance form a circuit, which generates a current. When there is a current, there will be electromagnetic force resistance torque. Energy is conserved, and as much electrical energy resistance torque is used, additional work needs to be done. For a generator with stable rotational speed, more electromagnetic resistance work means greater resistance torque. Generally speaking, the greater the power of the electrical appliance, the heavier the rotation, and the more difficult it is to rotate. When no electrical appliances are used, there is no current inside the generator coil, and the coil generates electromagnetic resistance moments. However, the bearings and belts of the generator all have resistance moments, which also consume the power of the diesel engine. In addition, the diesel engine itself is a four-stroke engine, with only one power stroke. Maintaining its idle operation also requires fuel consumption. As a heat engine of an internal combustion engine, the efficiency of the diesel engine itself is also limited.
The generator is driven by a diesel engine. When connected to a useful electrical appliance, the internal coil of the generator and the external electrical appliance form a circuit, which generates a current. When there is a current, there will be electromagnetic force resistance torque. Energy is conserved, and as much electrical energy resistance torque is used, additional work needs to be done. For a generator with stable rotational speed, more electromagnetic resistance work means greater resistance torque. Generally speaking, the greater the power of the electrical appliance, the heavier the rotation, and the more difficult it is to rotate. When no electrical appliances are used, there is no current inside the generator coil, and the coil generates electromagnetic resistance moments. However, the bearings and belts of the generator all have resistance moments, which also consume the power of the diesel engine. In addition, the diesel engine itself is a four-stroke engine, with only one power stroke. Maintaining its idle operation also requires fuel consumption. As a heat engine of an internal combustion engine, the efficiency of the diesel engine itself is also limited.
When the generator power is high and the consumer power is low, these losses may be greater than the consumer power. The power of a diesel engine is difficult to reduce, so the minimum power of a diesel generator should be a few kilowatts. For electric tools with a few hundred watts, this load can be ignored. The above confirms the fact that the fuel consumption of electric appliances with or without you is similar.
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