Three-phase motors can be converted into generators for general lighting by adding external capacitors and a power resistor. The external capacitor is divided into a main capacitor group and a sub-capacitor group. The main capacitor bank is mainly a capacitor that allows the generator to self-excite to reach the rated output voltage
at no load. condition. Subcapacitor refers to a capacitor which is used in the charged state. The capacity that must be added to maintain the output voltage at the rated value.
Does it cost oil to use a generator to drive. A water pump? Why
1. The rotation speed is different. The engine speed reaches tens of thousands of revolutions, while the engine speed used in the water pump is relatively low, only a few thousand revolutions. revolutions.
2. The lifespan is different. Motors used in ordinary hand drills have a short lifespan, while motors used in water pumps have a long lifespan because they use better raw materials, equipment and manufacturing processes. pump parts.
3. The noise is different. The motor used in ordinary electric hand drills produces sparks and loud noise during operation, while the motor used in water pumps has no bulk that could pollute the power supply and interfere with components electronic. . In comparison, it makes less noise.
4. The self-protection functions are different. The motors used in ordinary electric hand drills have medium self-protection functions, while the motors used in water pumps have double protection against overheating and overloading, and havecomplete protection. self-protection functions; they are compact in size.
5. Are there any differences between carbon brushes and commutators? Motors used in regular electric hand drills have carbon brushes and commutators, while motors used in water pumps do not have carbon brushes and commutators.
6. Motors have different properties. The motors used in ordinary electric hand drills are parallel-excited (or series-excited) motors, while the motors used in water pumps are asynchronous induction motors.
Detailed information
Knowledge of motor protection
Protector selection principles
Reasonable selection Motor protection devices, which can make full use of the overload capacity of the motor and avoid damage, thereby improving the fiability of the electric drive system and continuity of production. The selection of specific functions should comprehensively consider factors such as the value of the motor itself, the type of load, the use environment, the importance of the main equipment of the motor, whether removal of the engine's operation will have a serious impact on the production system, and strive to be economically reasonable.
The ideal motor protector
The ideal motor protector is not the one with the most functions, nor the so-called most advanced, but must meet the real needs of the construction site and be economical and reliable. Unified, with a high performance-price ratio. Reasonably select the type and function of the protector according to the actual situation on site. At the same time, consider the ease and convenience of installing, adjusting and using the protector. More importantly, choChoose a high-quality protector.
Reference documents:
Using a generator to drive a water pump consumes fuel because the generator requires fuel to provide power.
When a generator generates mechanical energy by burning fuel to drive waterWhen the pump pumps water, it consumes fuel. This is because the generator needs fuel to provide energy which is converted into electricity to power the electric water pump. The electricity required to operate the water pump comes from the electrical energy produced by the generator, and the operation of the generator requires fuel consumption. The chemical energy produced by burning fuel is converted into mechanical energy, thus driving the operation of generators and water pumps. Therefore, when using a generator to drive a water pump to pump water, fuel must be consumed. The purpose of this design is to ensure that the generator can stably provide enough electrical power to meet the electrical needs of the water pump.