Abstract: A method and system for maintaining consistent output for a pump powered by an electric motor, is provided, including: sending electrical measurements regarding power applied to the motor to a controller; determining if the electrical measurements indicate a power variation; changing the parameters of output from the motor to compensate for the variation. The system uses a controller configured to receive electrical measurements regarding power input to the motor, to determine if the electrical measurements indicate a power variation; and to change the parameters of output from the motor to compensate for the variation.