How does a switched reluctance motor work?

The switched reluctance motor works based on the principle of reluctance torque. When the current passes through the stator poles, under the action of the magnetic field generated by the stator, the iron core on the rotor will be attracted by the magnetic force and move to The position with the strongest magnetic field strength, then the current in the stator will be changed, causing the magnetic field to change, and the rotor will be affected by new magnetic forces, and will continue to be attracted to the position with the strongest magnetic field. By constantly changing the current in the stator, it can Make the rotor move continuously.

# Operating system for this tutorial: Windows 10 system, Dell G3 computer.

Switched Reluctance Motor (SRM) is a motor that works based on the reluctance torque principle. Compared with traditional induction motors and permanent magnet synchronous motors, it has the advantages of simple structure, high efficiency and lower cost.

The working principle of SRM is as follows:

1. Structure: SRM consists of a stator and a rotor. There are several symmetrically distributed stator poles on the stator, and the rotor is composed of an iron core without any windings.

2. Principle: SRM works based on the reluctance torque principle. When current passes through the stator poles, under the action of the magnetic field generated by the stator, the iron core on the rotor will be attracted by the magnetic force and move to the position with the strongest magnetic field intensity under the action of the magnetic force. Then, the current in the stator will be changed, causing the magnetic field to change, and the rotor will be subject to new magnetic forces, constantly being attracted to the position with the strongest magnetic field. By continuously changing the current in the stator, the rotor can be made to move continuously.

3. Control: SRM is usually controlled electronically. By precisely controlling the magnitude and timing of the stator current, the rotor motion can be controlled, including speed, steering, and torque. This allows SRM to adapt to the needs of different working conditions.

Generally speaking, the switched reluctance motor uses the interaction of current and magnetic field to control the movement of the rotor by continuously changing the stator current to achieve the work of the motor. It has the advantages of simplicity, reliability, high efficiency and low cost, and is widely used in certain specific application scenarios.

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