What is the ac motor made up of?
Alternator is divided into two parts, the stator winding and rotor winding three-phase stator winding Angle of 120 degrees of electricity distribution according to the differences in the shell, rotor winding is composed of two pieces of a claw. When the rotor winding is connected to a direct current, the two polar claws form N poles and S poles. The line of magnetic force starts from the N pole, and enters the stator core through the air clearance to the neighboring S pole. Once the rotor rotation, the rotor winding will cut lines, mutual difference 120 KWH in stator winding sine electromotive force, the Angle of the three-phase alternating current (ac), through the six of silicon diode rectifier components into a dc output. As the output voltage of the generator increases with the speed of the engine, the voltage regulator should be adjusted to meet the need. The modern car's generators are compact, putting an integrated circuit regulator into a generator and filling it with a multi-tube form. For example, the xiali car generator has eight semiconducting tubes, six rectifier used only, the other 2 is used only for three-phase neutral point voltage rectifier output, so as to improve the power of generator.
Car electric has two key components, one is a generator, and the car is powered by the car. The other is the motivation to start the car. The motor has a magnetic field and the armature and rectifying element, but the former is to convert mechanical energy into electrical energy, which converts electrical energy into mechanical energy, and the structure of the two is have very big difference. Previous auto generator is a dc generator, commutator rectifying, since the 1970 s have been phased out, now auto generator is mostly alternator, with semiconductor rectifier. It has the advantages of small size, large power, long life, low failure and low speed charging performance.
The modern car is widely used in air-conditioning units, electric jet engines, electric control doors and Windows, electric adjustable seats, etc. The more advanced the car, the more power it USES. Today's mid-premium car generators are typically about 1 kilowatt. With the increase of automation and comfort, the use of electricity should be increased, but the installation space of cars is limited, and it is impossible to increase the power by increasing volume. As a result, engineers are working on cooling and installing positions. For example, install the generator on the top of the engine and try to stay away from the hot zone. The rear end of the generator is fitted with fan blades to enhance the cooling effect. BMW recently tried to improve the cooling effect of the generator by trying to cool it with water. The starter is made up of motors, actuators, and manipulators. Special start the engine, it needs strong torque, so want to through the flow of electricity is very big, hundreds of ampere, this feature determines it is different from the generator. For example, using dc series motor, the rotor and stator parts are made of coarsely rectangular copper wire. Driving mechanism adopt reduction gear structure; The operator USES electromagnetic magnetic absorption.
