Advances in Electrical and Computer Engineering (Jun 2009)
Study and Design of a Linear Compressor of Voice-Coil Typ
Abstract
The paper presents the design and Finite Element (FEM) analysis of a Linear compressor of voice coil type (LCVCT). This kind of linear compressor will be used in a refrigerator equipment. It is well-known that the replacing of the rotating compressor from a classical refrigerator by a linear compressor leads to an efficiency improving wit about 5% by avoiding the piston side friction, which is very important because of the huge number of refrigerators in operation world-wide. The linear compressor refrigerator is already commercially available in South Korea, equipped with an electromagnetic (fix coil and moving permanent magnet) linear compressor. This paper presents a new type of linear compressor - a voice-coil type (fixed permanent magnet and moving coil). The operation principle is the same as for electrodynamic vibrator or electro-dynamic loud-speaker. The designing with rare earth permanent magnet is not a simple problem, because of the nonlinear characteristic of rare earth magnets. A magneto-static FEM analysis has been performed in order to validate the design methodology proposed in the paper.
