Advantages of DC motors

1. DC motor has good starting characteristics and speed adjusting characteristics, speed regulation is fast, accurate and stable;

2. The starting torque of the DC motor is relatively large;

3. It can be powered by batteries and is not subject to space restrictions;

4. DC is more energy-saving and environmentally friendly than AC.

Shortcomings of DC motors

1. Complex structure and high manufacturing cost;

2. With carbon brush, easy to consume and short life;

3. Troublesome maintenance and high maintenance cost.

Advantages of AC motors

1. Low AC motor manufacturing cost;

2. With the development of vector frequency conversion technology, frequency conversion motors can be used to simulate DC current;

3. Simple structure, easy maintenance and low environmental requirements.

Disadvantages of AC motors

1. The start ability and speed regulation of the AC motor are poor, and it need frequency conversion equipment to adjust the speed;

2. Must be connected to AC power to use, subject to space restrictions.