Operating principle of the motor

Release Date:

2018-12-24

Author: Shengyue Electronics

A motor is the common name for an electric motor. Its operating principle is based on electromagnetic induction: a current-carrying conductor experiences a force when placed in a magnetic field, causing it to move. The coils you mentioned are wound from enameled wire with copper or aluminum conductors; these are called stator windings and are typically made of copper‑enameled wire, arranged symmetrically within the stator slots. The rotating part is called the rotor, which consists of aluminum bars forming the rotor winding. When a three‑phase symmetrical current is passed through the stator windings, a rotating magnetic field is generated. The rotor conductors cut across this rotating magnetic field, inducing an electromotive force. Under the influence of this induced voltage, current flows in the rotor conductors, and the rotor current interacts with the rotating magnetic field…

A motor is the common name for an electric motor. Its operating principle is based on electromagnetic induction: a current-carrying conductor experiences a force when placed in a magnetic field, causing it to move. The coils you mentioned are wound from enameled wire with copper or aluminum conductors; these are called stator windings and are typically made of copper‑enameled wire, arranged symmetrically within the stator slots. The rotating part is called the rotor, which consists of aluminum bars forming the rotor winding. When three-phase symmetrical currents are passed through the stator windings, a rotating magnetic field is generated. The rotor conductors cut across this rotating field, inducing an electromotive force. Under the influence of this voltage, current flows in the rotor conductors, and the interaction between the rotor current and the rotating magnetic field produces an electromagnetic torque that drives the rotor to rotate. Here, I have described a three‑phase motor. For a single‑phase motor, since its starting torque is zero, a rotating magnetic field must be created inside the machine to initiate rotation. Typically, in addition to the main working winding, a starting winding is also provided, with the two windings spatially offset by a certain angle. By applying currents of different phases to these windings, a rotating magnetic field is produced, enabling the motor to start. Common starting methods include capacitor‑start and resistance‑split‑phase starting.

Sheng Yue

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Operating principle of the motor

A motor is the common name for an electric motor. Its operating principle is based on electromagnetic induction: a current-carrying conductor experiences a force when placed in a magnetic field, causing it to move. The coils you mentioned are wound from enameled wire with copper or aluminum conductors; these are called stator windings and are typically made of copper‑enameled wire, arranged symmetrically within the stator slots. The rotating part is called the rotor, which consists of aluminum bars forming the rotor winding. When a three‑phase symmetrical current is passed through the stator windings, a rotating magnetic field is generated. The rotor conductors cut across this rotating magnetic field, inducing an electromotive force. Under the influence of this induced voltage, current flows in the rotor conductors, and the rotor current interacts with the rotating magnetic field…

2018-12-24

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