What are the advantages of the dc motor controller

Dc motor controller is normally have what advantage? Small make up to introduce below. 1. On the maintenance cost is low; 2. Has a large working distance; 3. Have a good start and speed control characteristic; 4. Compared with ac motor controller of alternating current (ac), its dc more energy conservation and environmental protection; 5. With starting and speed control performance is good, wide speed range, strong overload capacity, and affected by electromagnetic interference and small advantage. These are the advantages of dc motor controller, hope to help everyone.