Abstract: An apparatus and associated method for operating a horizontal surface pump apparatus, including a motor operating a pump to pressurize a fluid inside the pump. A flow controller executes computer instructions stored in memory that define a selected flow rate of the fluid flowing out of the pump based on a flow profile trajectory stored in memory and related to an observed parameter of the fluid. A motor controller executes computer instructions stored in memory that map the selected flow rate and an observed head pressure of the fluid to a selected motor speed via a transformation function stored in memory, and that operate the motor at the selected motor speed.

Abstract: A saltwater disposal system and method that has a pump pod containing a plurality of individually controllable pumps. A tank pod contains a plurality of tanks connected to the pump pod to discharge fluid from the tanks by selected activation of the pumps. Each tank is configured to transmit a fluid level signal indicating a level of fluid in the respective tank. A flow controller executes computer instructions stored in a computer memory that defines a collective discharge flow rate for the tank pod from individual discharge flow rates for each tank based on a stored flow profile that varies discharge flow rate in relation to the tank fluid level signal. The flow controller also selectively activates the pumps according to predetermined operating rules to match a collective discharge flow rate of the pump pod to the discharge flow rate of the tank pod.

Abstract: An apparatus and associated method for operating a pump. A flow controller executes computer instructions stored in memory that define a selected flow rate of the fluid flowing out of the pump based on a flow profile trajectory stored in memory and related to a parameter of the fluid. A motor controller executes computer instructions stored in memory that map the selected flow rate to a selected motor speed via a transformation function stored in memory, and that operate the motor at the selected motor speed.