Systems and methods for managing drive parameters after maintenance
AssigneeSchlumberger Technology Corporation
InventorsShyam Janakiraman, Ramakrishna Madhireddy, Franz Carstens, Seetharam Kothuru
Life of this patent
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Abstract
Systems and methods for operating a motor according to parameters provided by an autotuning component if available are described. A controller can be coupled to a drive which operates a motor for executing a task that can be related to a drilling operation for oil and gas. The controller stores initial parameters and checks for new parameters provided by the autotuning component which are stored on the drive after the autotuning component autotunes the motor. If there are new parameters, they are given priority over the initial parameters.
Claims19
A system, comprising:
- a controller;
- a variable frequency drive (VFD) operably coupled to the controller and configured to be controlled by the controller;
- a motor operably coupled to the VFD and configured to be operated by the VFD;
- and
- an autotuner configured to tune the motor;
- wherein:
- the controller is configured to receive parameters that determine operation of the VFD and motor, the parameters being grouped into sets of parameters;
- the controller is configured to store a first set of parameters;
- when the autotuner tunes the motor, a second set of parameters is generated;
- the controller is configured to selectively apply the first set of parameters and the second set of parameters according to a predetermined priority;
- and
- the controller is configured to compare the first and second parameters to determine a difference between the first and second sets of parameters, and wherein if the difference between the first and second sets of parameters is less than the predetermined threshold the second set of parameters is not used.
A system for controlling motors, the system comprising:
- a programmable logic controller (PLC) configured to store a set of parameters;
- a motor operably coupled to the PLC and configured to receive instructions from the PLC;
- a database operably coupled to the PLC, the database being configured to store parameters for operation of the motor;
- and
- an autotuner configured to tune the motor and to generate a new set of parameters, wherein the new set of parameters is stored in the database,
- wherein the PLC is further configured to selectively apply the set of parameters and the new set of parameters according to a predetermined priority, and
- wherein the PLC is further configured to compare the set of parameters and the new set of parameters to determine a difference between the set of parameters and the new set of parameters, and wherein if the difference between the set of parameters and the new set of parameters is less than a predetermined threshold the new set of parameters is not used.
A method of operating a plurality of motors, the method comprising:
- operating a programmable logic controller (PLC) to control a motor;
- storing a plurality of parameters for operation of the motor in a database;
- accessing the motor by an autotuner and generating a new set of parameters for operation of the motor;
- selecting between the plurality of parameters and the new set of parameters;
- and
- operating the PLC to control the motor based on the selected parameters,
- wherein the PLC is configured to compare the plurality of parameters and the new set of parameters to determine a difference between the plurality of parameters and the new set of parameters, and wherein if the difference between the plurality of parameters and the new set of parameters is less than a predetermined threshold the new set of parameters is not used.
Dependencies are inferred from the claim text.