What are the reasons for excessive load current in generators? How to deal with it?

Updated on Car 2024-07-28
9 answers
  1. Anonymous users2024-02-13

    First of all, see if the damper is not fully opened, if it is, then check whether the air filter is clean, if it is too dirty, clean it.

    If there is no problem, see if there is too much carbon in the exhaust pipe to cause a partial blockage. The mixture is too thin, the spark is weak, the ignition time is improper, the spark plug gap is improper and other reasons are also a reason for the lack of power, in addition, you can see if the governor sensitivity has decreased, if so, then you can replace a new governor. If there is no problem with the appeal inspection, then check whether there is any air leakage in the generator cylinder and crankcase (if it is a valve valve mechanism, improper valve clearance and poor valve sealing will also cause air leakage).

    Finally, the gap between the parts of the piston ring is improperly and the seal is not good, resulting in air leakage. Air leakage caused by heavy wear of the cylinder or piston is also a problem that leads to insufficient power after load.

    Generally speaking, there are the following ways to deal with insufficient processing power:

    1) A three-phase voltage regulator is connected between the generator and the excitation reactor to increase the voltage at the generator end and gradually increase the magnetic potential of the excitation device.

    2) Change the phase of the magnetic flux potential of the excitation device voltage and the voltage of the generator end, so that the total magnetic flux potential of the synthesis increases, and the resistance of thousands of ohms and 10W can be connected in parallel at both ends of each phase winding of the reactor.

    3) Reduce the resistance of the rheostat to increase the excitation current of the generator.

  2. Anonymous users2024-02-12

    Excessive load current of the generator indicates that it is greater than the rated value, and it will only occur if the load is overloaded, and the voltage will also decrease.

  3. Anonymous users2024-02-11

    First of all, make sure that the motor specifications are not too small......

  4. Anonymous users2024-02-10

    Hello, the voltage of the generator is positive when there is no load, but the voltage increase when the load is carried may be caused by the following reasons:1Excitation current is too large:

    Excessive excitation current can cause the generator voltage to rise, which may be due to a faulty regulator or regulator failure in the excitation system. 2.The load is too light:

    If the load is too light, the generator output voltage will rise, which may be due to a faulty load switch or an underload. 3.Capacitor Failure:

    If the generator output capacitor fails, the capacitor will lose its capacity, causing the voltage to rise. 4.Voltage regulator malfunction:

    The voltage regulator is an important part of controlling the output voltage of the generator, and if the voltage regulator fails, the voltage will rise. The above are some possible causes of the increase in the load voltage of the generator, which need to be troubled and repaired according to the specific situation.

  5. Anonymous users2024-02-09

    Generator overload treatment method pro, hello! The overload of the generator is that the stator current indication exceeds the rated value or the reactive power meter indicates that the rated value exceeds the rated value. Solution:

    1) Reduce the active and reactive load of the generator according to the situation, and control this type until the stator and rotor electric squeezer flow does not exceed the rated value. 2) If it is caused by the working excitation regulator, the standby excitation regulator can be switched to run. 3) If it is an accident overload, it will be mastered according to the allowable time of accident overload.

    4) In case of accident overload, strengthen the monitoring of the temperature of each part of the generator and the temperature of each part of the cooling system. Hope it helps!

  6. Anonymous users2024-02-08

    1. The size of the induced current generated by the motor is related to the speed of the coil, the size of the coil, the number of turns of the coil, the strength of the magnetic field, and the size of the load. The motor generates the amount of induced current and the rate of change of the coil magnetic flux, and the load determines the amount of current.

    2. Under the same conditions of the speed and steering of the first circle, if the magnet with different magnetic strength is used to make the coil move in the magnetic field, the size of the induced current is related to the magnetic strength of the magnet; The opposite is not true.

  7. Anonymous users2024-02-07

    When the generator is not loaded, the voltage is relatively stable because there is no load. But when the generator is loaded, if you find that the voltage rises, it may be caused by the following reasons:1

    Regulation system failure: There is a problem with the generator regulator and the output voltage cannot be controlled. 2.

    Excessive power supply: If the power of the load is much lower than the rated power of the generator, it will cause the power output to be over-output. 3.

    Distribution network problems: If other power supply equipment or generators are found to be connected to the grid for power supply, it can lead to instability in the distribution network, resulting in voltage increases when loaded. 4.

    Excitation Circuit Problems: If the excitation fails or the excitation circuit is incorrectly wired, an abnormality will occur. The above is only one of some of the reasons that may lead to this situation, and the specific reasons need to be analyzed and judged according to the actual grinding macro situation.

    If this kind of problem exists for a long time, it is necessary to contact professional maintenance personnel in time for inspection, dispatch and treatment.

  8. Anonymous users2024-02-06

    Dear, hello, thank you for your question, this side will serve you wholeheartedly, if the service is not good, please include more, the question you asked: the generator is normal when the voltage is not loaded, but the voltage rises when the load is loaded, this situation usually has the following possible reasons: 1

    There is a problem with the generator excitation system. The excitation system supplies the generator with an excitation current, which is used to generate the rotor magnetic field. If the excitation current increases, the strength of the rotor magnetic field also increases, resulting in an increase in the output voltage.

    This can be caused by the failure of the excitation regulator or other excitation system components. 2.The generator stator windings are broken or short-circuited.

    A break or short circuit in the stator windings causes an imbalance in the magnetic field, which increases the output voltage. This situation can be judged by measuring whether the three-phase voltage is balanced. 3.

    Mechanical failures cause the rotational speed to increase. The generator output voltage is proportional to the rotor speed. Mechanical failures such as bearing damage can lead to an abnormal increase in rotational speed, resulting in an increase in the output voltage.

    4.The titration reference power supply reading is incorrect. Some generators use a reference power supply to control the excitation system to stabilize the output voltage.

    If the reference supply reading is too high, the excitation system will incorrectly increase the excitation current, resulting in an increase in the output voltage. 5.Faulty load regulator.

    Some generators use a load regulator to automatically control the excitation current and adjust the output voltage based on the size of the load. If the load regulator fails and cannot respond to load changes normally, the output voltage may rise abnormally. In summary, a normal no-load and an increase in the load voltage are usually associated with the failure of the excitation system, stator windings, mechanical faults, or component failures related to impedance changes.

    The generator needs to be fully inspected and tested, and the faulty components are located and repaired or replaced to solve this fault.

  9. Anonymous users2024-02-05

    There can be a variety of reasons, the main ones may include the following:1Generator drive power is insufficient

    If the generator drive power is insufficient, then the generator will not be able to support the normal voltage load, so the voltage will rise. 2.The number of turns of the motor is not enough:

    The number of turns of the motor represents the sum of the modulus of the gears that can transmit power. If the number of turns of the motor is not enough, the generator will not be able to regulate the normal power sufficiently, which will also lead to an increase in voltage. 3.

    Insufficient resolution in the motor: The resolution in the motor indicates the performance of the motor under specific internal conditions. If the resolution in the motor is not enough, then the motor may not support enough in a specific situation, which will also affect the regulation of the voltage, resulting in an increase in voltage.

    4.Insufficient coarse tuning of the generator: The coarse tuning of the generator determines the optimal operating condition of the generator, and incorrect coarse tuning will affect the regulation of the voltage, which may lead to an increase in voltage.

    5.Poor position and contact of voltage measurement point: The closer the voltage measurement point is to the motor, the more accurate the voltage is read, if the position of the voltage measurement point is set incorrectly or the contact is not satisfactory, it will also affect the voltage regulation, which may lead to the problem of voltage increase.

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