Single-phase field-oriented control for a linear compressor
AssigneeHaier US Appliance Solutions, Inc.
InventorJoseph Wilson Latham
Life of this patent
Estimating the term…
Abstract
A method for operating a linear compressor of an appliance includes operating a motor of the linear compressor in order to drive a rotor of the motor. The method also includes obtaining, via a controller of the linear compressor, a current feedback measurement of the motor. Further, the method includes determining, via the controller, one or more phasor parameters of a piston velocity based, at least in part, on the current feedback measurement. In addition, the method includes, based, at least in part, on the one or more phasor parameters of the piston velocity, controlling, via the controller, the motor of the linear compressor using a single-phase vector-like control scheme.
Claims20
A method for operating a linear compressor of an appliance, the method comprising:
- operating a motor of the linear compressor, the motor comprising a stator and a mover, in order to drive the mover of the motor;
- obtaining, via a controller of the linear compressor, a current feedback measurement of the motor;
- determining, via the controller, one or more phasor parameters of a piston velocity based, at least in part, on the current feedback measurement;
- and
- based, at least in part, on the one or more phasor parameters of the piston velocity, controlling, via the controller, the motor of the linear compressor using a single-phase vector-like control scheme.
A linear compressor defining an axial direction and a vertical direction, the linear compressor comprising:
- a cylindrical casing defining a compressor chamber;
- a piston positioned within the compressor chamber and being movable along the axial direction;
- a motor operably coupled to the piston;
- and
- a controller configured to perform operations for controlling the motor, the operations comprising:
- operating a motor of the linear compressor, the motor comprising a stator and a mover, in order to drive the mover of the motor;
- obtaining a current feedback measurement of the motor;
- determining one or more phasor parameters of a piston velocity based, at least in part, on the current feedback measurement;
- and
- based, at least in part, on the one or more phasor parameters of the piston velocity, controlling the motor of the linear compressor using a single-phase vector-like control scheme.
An appliance, comprising:
- a cabinet defining an internal chamber;
- a door rotatably mounted to the cabinet to provide selective access to the internal chamber;
- a linear compressor, the linear compressor having a piston movable in a negative axial direction toward a compressor chamber and a positive axial direction away from the compressor chamber;
- a motor operably coupled to the piston;
- an inverter configured to supply a variable frequency waveform to the motor;
- and
- a controller configured to perform operations for controlling the motor, the operations comprising:
- operating a motor of the linear compressor, the motor comprising a stator and a mover, in order to drive the mover of the motor;
- obtaining a current feedback measurement of the motor;
- determining one or more phasor parameters of a piston velocity based, at least in part, on the current feedback measurement;
- and
- based, at least in part, on the one or more phasor parameters of the piston velocity, controlling the motor of the linear compressor using a single-phase vector-like control scheme.
Dependencies are inferred from the claim text.