The reason and treatment method of Volvo diesel generator not producing electricity

If the generator brush is stuck, or the rotor coil failure will lead to the generator can not generate electricity, at this time, it is necessary to deal with, can be tested with a multimeter, and then check whether the line is faulty, and then charge the battery, if the current is unstable, you need to check whether the contact of the wire is loose, here to understand the details.

One. Reasons why diesel vehicle generators do not generate electricity

1. Diode breakdown, not rectifier effect.

2. The brush is stuck in the brush holder, and the generator can not generate electricity because it is not excited.

3. The magnetic field coil of the rotor is not energized: the folded layer of the rotor coil is many, and some coils are not immersed in the bottom of the coil when the insulating paint is immersed, and there is a certain gap between the turns of the bottom coil and the turns. As the engine speed changes, there will be different centrifugal forces in the bottom coil. The frequency of coil contraction and expansion determines the number of conversion of coil and lead Angle size. The lead of common magnetic field coil to slip ring, especially the lead of the bottom coil used for too long, will produce metal fatigue and break.

4. Short-circuit or tie-in between stator coils.

5. The rotor claw is very loose: if in the shaft. A little loose, then the claw pole inner end face and the end face of the magnet will have a gap between the magnetic field coil generated flux will be missed in this, resulting in greatly reduced stator flux, stator coil induction of electromotive force is also greatly reduced, so that can not produce enough voltage to charge the battery.

Two, the treatment method of the generator does not generate electricity

1. Measure whether there is real electricity, the generator replacement voltmeter.

2. Set it to automatic or manual.

3. Check and correct according to the circuit diagram.

4. New generators or machines that are not used for a long time appear easily. You can press the charging button on the control panel for magnetization, or you can use 12V battery to magnetization the excitation winding, and the positive pole is connected to F1, and the negative pole is connected to F2. If the voltage can not be established, the battery positive and negative electrode exchange again.

5. Clean the ring surface, sand the carbon brush end face to make it and collector ring surface arc anastomotic area is greater than 70%, strengthen the spring pressure.

6. Clean the carbon brush and the carbon brush grip so that the carbon brush can move freely.

7. Use a multimeter to check the diode positive and negative resistance, such as damaged replacement.

8. Check with a multimeter, if the positive and negative resistance does not meet the requirements of diode characteristics when replaced.

9. The generator set with a multimeter 1K check winding, if the resistance value is infinite, should be connected. Check again with 1 ohm. If the resistance value is zero, replace or treat the windings. If not, check whether the connector is loose.

Jiangsu Meao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.