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 motor (10), a linear compressor (100), a method of controlling a linear compressor (100), a cooling system (20) and a system of controlling a linear compressor (100) to operate a linear compressor (100) in resonance in it's the greatest possible efficiency throughout its operation are described. One of the ways of achieving these objectives is by means of a linear compressor (100) applicable to a cooling system (20), the linear compressor (100) comprising 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), the linear compressor (100) having a resonance frequency and comprising a piston (1) driven by a linear motor (10), the linear motor (10) being fed by a controlled voltage (VM), the controlled voltage (VM) controlling a displacement range of the piston (1), the controlled voltage (VM) having a voltage feed frequency (fVP) of the linear motor (10) and generating a capacity of the linear compressor (100),
wherein the method comprises the following steps of: measuring the feed frequency (fVP) of the linear motor (10) and comparing the measurement of the feed frequency (fVP) with a reference frequency (FR); and based on the comparison between the voltage feed frequency fVP and the reference frequency (FR), dynamically adjusting the displacement range of the piston (1) to: increase the capacity of the linear compressor (100) if the voltage feed frequency (fVP) is higher than the reference frequency (FR), or decrease the capacity of the linear compressor (100) if the voltage feed frequency (fVP) is lower than the reference frequency (FR), the increasing and the decreasing of the capacity of the linear compressor (100) being performed to dynamically compensate a value of the voltage feed frequency (fVP), the voltage feed frequency (fVP) being adjusted such that the linear compressor (100) operates in the resonance frequency.