Reasons for low power generation and low voltage of three-phase AC synchronous generators:
1. The speed is too high. Treatment: Reduce the opening of the turbine water guide film and reduce the speed.
2. The air gap in the shunt reactor core is too large. Processing: Change the reactor core seal thickness and adjust the air gap.
3. The magnetic field rheostat is short-circuited; voltage regulation fails. Treatment: Find the short circuit point and eliminate it.
4. The generator caused a speed accident. Treatment: Emergency stop for treatment of an accident.
How to deal with the low power generation and low voltage of three-phase AC synchronous generator:
1. The main motor speed is too low. Treatment: Adjust the speed of the main motor to the rated value.
2. The resistance of the excitation circuit is too great. Treatment: Reducedre the resistance of the magnetic field rheostat to increase the excitation current. For solid-state excitation generators, check whether the supplementary winding connector is broken or poorly connected.
3. Exciter brush is not in neutral position Solution: Or spring pressure is too low. Adjust the brushes to the correct position, replace the brushes and adjust the spring pressure.
4. Some rectifier diodes have failed. Treatment: Check and replace the failed diode.
5. There is a short circuit or ground fault in the stator winding or field winding. Treatment: Check the fault and eliminate it.
6. The brush contact area is too small, the pressure is insufficient, and the contact is poor. Treatment: If it is caused by the uneven surface of the collector, you can use emery cloth to polish the surface of the collector at low speed, or adjuster the spring pressure.
The charging voltage of the Golf 7 generator is increased
(1) Reason: The speed is too high. Treatment: Reduce the opening of the turbine water guide film and reduce the speed. (2) Reason: The air gap in the shunt reactor core is too large. Processing: Change the reactor core seal thickness and adjust the air gap. (3) Reason: magnetic field rheostat short circuit; failure of voltage regulation. Treatment: Find the short circuit point and eliminate it. (4)Cause: generator accident and speeding. Treatment: Emergency stop for treatment of an accident. Source:
If the charging voltage of the car generator is too high, it will cause the following malfunctions:
(1) The speed is too high. Treatment: Reduce the opening of the turbine water guide film and reduce the speed.
(2) The air gap in the shunt reactor core is too widend. Processing: Change the reactor core seal thickness and adjust the air gap.
(3) The magnetic field rheostat is short-circuited; voltage regulation fails. Treatment: Find the short circuit point and eliminate it.
(4) Engine speed accident. Emergency stop in case of accident.
(5) The generator voltage regulator fails.