During cranking , the battery supplies all of the vehicle’s electrical power. However,once the engine is running,the charging system is responsible for producing enough energy to meet the demands of all of the loads in the electrical system, while also recharging the battery. With all of the electrical and electronic devices found on today’s vehicle, the charging system has difficult job.
Several decades ago the charging system depended on a DC generator. The DC generator provided direct current DC and was similar to an electric motor in construction. The biggest difference between a generator and a motor is the wiring to the armature. In a motor,the armature receives current from the battery. This creates the magnetic field that opposes he magnetic fields in the motor’s coils,Which causes the armature to rotate. The armature in a Dc generator is driven by the engine. It is not magnetized and the winding simply rotate through the stationary magnetic field of the field windings, inducing a voltage in the conductors in side the armature. A motor can become a generator by allowing current to flow from the armature instead of to it. In a DC generator,the placement of the brushes on the commutator changes the induced AC voltage to a DC voltage output.
DC generators had a very limited current output especially at low speeds, They could not keep up with demands of the modern automobile and were replaced by AC generators. AC generators are capable of providing high current output even at low engine speeds.
During cranking , the battery supplies all of the vehicle’s electrical power. However,once the engine is running,the charging system is responsible for producing enough energy to meet the demands of all of the loads in the electrical system, while also recharging the battery. With all of the electrical and electronic devices found on today’s vehicle, the charging system has difficult job.Several decades ago the charging system depended on a DC generator. The DC generator provided direct current DC and was similar to an electric motor in construction. The biggest difference between a generator and a motor is the wiring to the armature. In a motor,the armature receives current from the battery. This creates the magnetic field that opposes he magnetic fields in the motor’s coils,Which causes the armature to rotate. The armature in a Dc generator is driven by the engine. It is not magnetized and the winding simply rotate through the stationary magnetic field of the field windings, inducing a voltage in the conductors in side the armature. A motor can become a generator by allowing current to flow from the armature instead of to it. In a DC generator,the placement of the brushes on the commutator changes the induced AC voltage to a DC voltage output.DC generators had a very limited current output especially at low speeds, They could not keep up with demands of the modern automobile and were replaced by AC generators. AC generators are capable of providing high current output even at low engine speeds.
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