Chenggang AC and DC

The DC motor of Chenggang's AC and DC is the magnetic field is not moving, the conductor moves in the magnetic field; the AC motor is the magnetic field rotating motion, and the conductor is not moving. The DC motor is divided into the stator winding and the rotor winding. The stator winding generates the magnetic field. When the DC current is passed The stator winding generates a magnetic field of a fixed polarity. The rotor is subjected to a direct current in the magnetic field. Then the rotor rotates in the magnetic field. The DC motor has a complicated structure and high cost. The AC motor is divided into a stator winding and a rotor conductor. The rotor conductor The shape is like a silicon steel plate between the squirrel cage conductor and the conductor. Some AC motor rotors also have windings. The principle of rotation of the three-phase asynchronous motor The prerequisite for the three-phase asynchronous motor to rotate is to have a rotating magnetic field, the stator of the three-phase asynchronous motor The winding is used to generate a rotating magnetic field. We know that the voltage between the three-phase power phase and the phase is 120 degrees out of phase, and the three windings in the stator of the three-phase asynchronous motor are also 120 degrees out of phase in the spatial orientation, so that when passing through the stator winding When entering the three-phase power supply, the stator winding will generate a rotating magnetic field. After the stator winding generates a rotating magnetic field, the rotor conductor (squirrel cage) will cut the magnetic field lines of the rotating magnetic field to generate an induced current, and the current in the rotor bar and the rotating magnetic field. The interaction generates an electromagnetic force, and the electromagnetic torque generated by the electromagnetic force drives the rotor to rotate in the direction of the rotating magnetic field. In general, the actual speed of the motor is not synchronized with the speed of the rotating magnetic field. For this we call the three-phase motor an asynchronous motor. Second, the single-phase AC motor rotation principle Single-phase AC motor has only one winding, the rotor is squirrel-cage. Single-phase electricity cannot generate a rotating magnetic field. To make a single-phase motor automatically rotate, we can add a starting winding to the stator. The starting winding is 90 degrees out of phase with the main winding. The starting winding must be connected in series with a suitable capacitor. So that the current with the main winding is approximately 90 degrees out of phase, the so-called phase separation principle. Such two currents that differ by 90 degrees in time into two windings that are spatially different by 90 degrees will spatially generate a (two-phase) rotating magnetic field, under which the rotor can automatically start. Http://

Http://news.chinawj.com.cn Submission:

Toilet Bidet Fittings

bidet connector,bidet t adapter,Bidet Taps,Bidet Attachments

Yuyao Gaobao Sanitary Ware Factory , https://www.gurberry.com