Two generators share a common electrical cabinet, i.e. the two generators operate in parallel. Generator ground wires, electrical cabinet ground wire, generator zero line (neutral line) also include grounding. the wires of other electrical equipment. Wait, they must be connected together.
In this way, the wiring can be simplified and zero protection and grounding protection can coexist, which is the best protection solution.
Car Generator Wiring:
Here it is assumed that the thick red, thick black and thin and thick red ends are connected to the engine output (B+) and the drums. + pole respectively. The two ends of the thick black wire are connected to the generator box and the battery respectively, and the two ends of the ultra-thin wire are connected to the IG generator and the battery respectively.e + pole so that the battery can be charged after switching on the generator.
Detailed information
Working principle
Working principle of the overall alternator
1. Powering the excitation winding through the brush, a magnetic field is generated, causing the claw poles to be magnetized into N and S poles. When the rotor rotates, the magnetic flux changes alternately in the stator winding. According to the principle of electromagnetic induction, it can be seen that an alternating induced electromotive force is generated in the three-phase winding of the stator. This is how an alternator produces electricity.
2. The rotor of the synchronous generator excited by direct current is driven by the main motor (i.e. motor) to rotate at a speed n (rpm), and the three-phase stator winding induces an alternating potential . If the stator winding is connected to a charelectric power, the motor will produce alternating current. The alternating current will be converted to direct current through the bridge rectifier inside the generator and output from the output terminal.
3. The alternator is divided into two parts: the stator winding and the rotor winding. The three-phase stator winding is distributed across the housing at an electrical angle of 120 degrees from each other. is composed of two polar claws. When the rotor winding is connected to direct current, it is energized and the two pole claws form the N pole and the S pole.
4. The magnetic lines of force start from the N pole, enter the stator core through the air gap, and then return to the adjacent S pole. Once the rotor turns, the rotor windings cut the magnetic lines of force, generating a sinusoidal emf with a mutual difference of 120 electrical degrees in the stator windings, i.e. alt currenternative three-phase, then converted into direct current output via the rectifier element composed of diodes.
When the switch is closed, the battery first supplies current. The circuit is:
1. Battery positive pole → charging indicator light → regulator contact → field winding → ground → battery negative pole. At this time, the charging light will light up because there is current flowing through it.
2. However, after the engine is started, as the speed of the generator increases, the voltage across the generator also continues to increase. When the generator output voltage is equal to the battery voltage, the potentials of the generator terminals “B” and “D” are equal. At this time, the charging indicator light turns off due to the potential difference between the two ends. is zero.
3. It indicates that the generator is operating normally and the excitation current is supplied by the generator itself. The strengthThree-phase AC electromotive generated by the three-phase windings of the generator is rectified by the diode, then produces DC power to power the load and charge the battery.
Reference materials:
Baidu Encyclopedia-Car Generator