In mining, metallurgy, cement and other industries in the collector ring and brush brushless motor controller used for starting resistance switching, and after starting motor controller to rotor winding short circuit. To reduce the collector ring and brush brushless motor controller used in the whole period of wear and fever, collector ring and brush is very important for the selection of wound rotor motor controller. Collector ring material selection based on electric conductivity, and brush sliding contact, must have the abrasion resistance and stable characteristics of sliding contacts, and to meet the requirements of mechanical strength, slip ring brass, bronze, low carbon steel and medium carbon steel are available, and the slip ring of high-speed motor controller with high strength alloy steel (Such as 35 smin)Is made. For corrosive place, you can use the stainless steel slip ring, but the sliding characteristics of stainless steel is not stable, and brush combination inappropriate beating often make brush, easy to cause the brush temperature too high or unusual wear, do not use this material as far as possible. Brushless motor controller by the use of integrated circuit support, so the material selection and design is particularly important. To understand the small make up to summarize the content of the above, the hope can help to you!
