Linear motor, a linear compressor, a method of controlling a linear compressor, a cooling system, and a linear compressor controlling a system

摘要

A linear compressor (100) applicable to a cooling system (20) includes a piston (1) driven by a linear motor (10), the piston (1) having displacement range controlled by means of a controlled voltage (VM), the controlled voltage (VM) having a voltage frequency (φP) applied to the linear motor (10) and adjusted by a processing unit (22), the range of piston (1) displacement being dynamically controlled in function of a variable demand of the cooling system (20), the linear compressor (100) having a resonance frequency, the processing unit (22) adjusting the range of piston (1) displacement, so that the linear compressor (100) will be dynamically kept on resonance throughout the variations in demand of the cooling system (20).

主权项

1. A method of controlling a linear compressor (100) of a cooling system (20), the linear compressor (100) comprising a piston (1) driven by a linear motor (10),
the piston (1) having a controlled voltage (VM), the controlled voltage (VM) having a voltage frequency (fVM) applied to the linear motor (10) and adjusted by a processing unit (22), the controlled voltage (VM) generating a feed current (iA) that circulates in the linear motor (10), wherein the method comprises the steps of:
measuring a feed phase (φC) of the feed current (iA) and a dynamic phase (φP) of the piston (1) of the linear compressor (100),measuring a difference between the feed phase (φC) and the dynamic phase (φP) and establishing a measured phase (φPC),dynamically adjusting a range of displacement of said piston as a function of a variation in demand of the linear compressor (100) of the cooling system, so that the linear compressor will be kept in resonance throughout the variation in demand so that a value of the measured phase (φPC) will be null, wherein said variation in demand is derived from changes in said measured phase (φPC) without reference to an external variable.