What is the difference between a DC motor and an AC motor?

In life, we can often use motors, but did you know that motors are divided into DC motors and AC motors? Although they are both types of motors, currents are generated by the interaction of magnetic fields and mechanical energy, but their functional structures are quite different. Let me introduce to you the difference between DC motors and AC motors.

1. The external power supply is different. The DC motor uses DC power as the power source. Although the principle is simple, the structure is complex and inconvenient to maintain. The AC motor uses AC power as the power source, which is complicated in principle but simple in structure.

2. The motor structure is different. The direct current of the DC motor will not generate a rotating magnetic field. It is the magnetic field that does not move, and the conductor carries the magnetic field to move. The AC motor will generate a rotating magnetic field as long as the stator coil is arranged according to the phase, and the magnetic field rotates. The conductor does not move.

3. The speed regulation is different. The DC motor does not need the cooperation of other equipment. It only needs to change the input magnetic voltage and current to realize the speed regulation. The AC motor needs to use the frequency conversion device to realize the speed regulation.

4. Different application fields, DC motors are mostly used in automobile bodies, production lines, corrosion, and humid harsh environments, while AC motors are widely used in industrial and agricultural production, transportation, national defense, commercial and household appliances, medical electrical equipment and other aspects.

Through the difference between a DC machine and a converter, we can find that a DC motor is mainly a motor that realizes the mutual conversion of DC electrical energy and mechanical energy, while an AC motor is a motor that is used to realize the mutual conversion of mechanical energy and AC electrical energy. Both have their own advantages and disadvantages. The DC motor has simple control, high efficiency, low cost and mature technology, but the motor volume is too large, the size of the high-power motor is difficult to control, and the internal carbon brushes and commutators need to be regularly maintained and replaced. The AC motor has high efficiency, small size, light weight, maintenance-free, communication monitoring, solid and reliable, and long service life, but the cost is too high and the control is complicated.

So, how to choose the correct and easy-to-use DC motor and AC motor in the use of motors? There must be a custom DC machine control board and a custom AC control board. A good control board is related to the service life of the motor, and the shortcomings of the two can be effectively avoided by customizing the motor control board. , Low noise DC motors and AC motors.

Syhogy (Xiamen) Tech Co.,Ltd. is a professional motor controller manufacturer, with ten years of professional R&D experience, to help you quickly develop products and provide one-stop service. In addition to customizing motor control panels, you can also customize home control panels and IoT development controllers , low cost, high efficiency, welcome your consultation.