A particular solution is dictated by the details of the application, as it should be. In Baldor s application and user experience open-loop control remains very effective. To gain further insight about sensorless controls, Baldor tested SV drives from seven of its competitors. All SV drive brands were run under the same test procedures at Baldor s Fort Smith, Ark.-testing facility. These results are generally in line with, but somewhat lower than certain claims.
Many customers prefer the simplicity.
Sensorless vector drives usually don t work right out of the box without some motor information. Baldor Electric Co . At the same time, the open-loop market is not being diminished by the emergence of sensorless technology, according to Baldor product manager Roddy Yates. Increasing the number of motor parameters measured will increase performance in SV drives. Particularly voltage feedback can raise the cost of SV drives.