The working principle of automobile alternator is that the stator and rotor of the generator are connected and assembled by bearings and end covers, so that the rotor can rotate in the stator and carry out the movement of cuts magnetic lines of force. thereby generating an induced electrical potential, which is extracted through the terminals connected in the loop, a current is generated.
The alternator uses the electromagnetic induction principle of cutting magnetic wire lines to induce electric potential and converts the mechanical energy of the main engine into electrical energy for output. The synchronous generator consists of two parts: the stator and the rotor. The stator is the armature that generates electricity and the rotor is the magnetic pole. The stator consists of an armature core, uniformly distributed three-phase windings, a machine base and an end cover. The rotor isusually hidden pole type and consists of excitation winding, iron core and shaft, retaining ring, center ring, etc.
The car's alternator is the car's primary source of power and is driven by the engine. In normal operation, it powers all electrical equipment, except the starter. If there is excess energy, it fuels. the battery. When the alternator is running, do not use the fire test method to check whether it produces electricity, otherwise the diodes and electronic components may be easily damaged. (Photos/Text/Photography: Wu Binbin) @2019
The generator must not be damaged. Since the vehicle has no power, first check if the battery is damaged and has lost power.
You can first use a battery tester to check the health of the battery. If the state of health isless than 10%, the battery should be replaced.
To check the generator, you can wait until the vehicle can start. After starting the vehicle, operate it at idle speed. Use a multimeter to measure the voltage generated and use the DC gear. If the generation voltage is 14V, it means the generator is working normally. If the generation voltage is lower than 12 V, it means that the generator is not producing electricity and there is a fault.