Paper: Utility Of Motor Speed Measurements In Pumping Well Analysis And Control

This paper describes how motor speed can be used to deduce items of practical interest. With respect to equipment loading, gearbox torque can be deduced from motor speed and the relationship between speed and motor torque. Unit balance can be sensed and counterbalance can be adjusted to minimize loading and to conserve power. An unexpected result is that reasonably precise dynamometer cards can be inferred from motor speed and unit geometry, even without use of a dynamometer.