Analysis of a Tubular Linear Permanent Magnet Motor for Reciprocating Compressor Applications

This paper describes a design optimization to achieve optimal performance of a two novel single-phase short-stroke tubular linear permanent magnet motors (TLPMMs) with rectangular and trapezoidal permanent magnets (PMs) structures. The motors equipped with a quasi-Halbach magnetized moving-magnet armature and slotted stator with a single-slot carrying a single coil. The motors have been developed for reciprocating compressor applications such as household refrigerators. It is observed that the TLPMM efficiency can be optimized with respect to the leading design parameters (dimensional ratios). Furthermore, the influence of mover back iron is investigated and the loss of the motor is computed. Finite element analysis (FEA) is employed for the optimization, and the optimal values of the ratio of the axial length of the radially magnetized magnets to the pole pitch as well as the ratio of the PMs outer radius-to-stator outer radius (split ratio), are identified.

[1]  Taib Ibrahim.  Short-stroke, single-phase tubular permanent magnet motors for refrigeration applications. , 2009 .

[2]  Jiabin Wang,et al.  A Resonant Frequency Tracking Technique for Linear Vapor Compressors , 2007, 2007 IEEE International Electric Machines & Drives Conference.

[3]  Shaobo Hou,et al.  An open air–vapor compression refrigeration system for air-conditioning and desalination on ship , 2008 .

[4]  D. Howe,et al.  Tubular modular permanent-magnet machines equipped with quasi-Halbach magnetized magnets-part I: magnetic field distribution, EMF, and thrust force , 2005, IEEE Transactions on Magnetics.

[5]  H. Quack,et al.  Reduction In Power Consumption Of Household Refrigerators By Using Variable Speed Compressors , 2002 .

[6]  David Howe,et al.  Prediction and Measurement of Iron Loss in a Short-Stroke, Single-Phase, Tubular Permanent Magnet Machine , 2010, IEEE Transactions on Magnetics.

[7]  Claudia Sheinbaum-Pardo,et al.  Electricity sector reforms in four Latin-American countries and their impact on carbon dioxide emissions and renewable energy , 2010 .

[8]  Jiabin Wang,et al.  Design Optimization of Short-Stroke Single-Phase Tubular Permanent-Magnet Motor for Refrigeration Applications , 2010, IEEE Transactions on Industrial Electronics.

[9]  孙文强,et al.  Change in Carbon Dioxide (CO2) Emissions From Energy Use in China′s Iron and Steel Industry , 2011 .

[10]  Yaow-Ming Chen,et al.  Performance Analysis of Linear Permanent-Magnet Motors With Finite-Element Analysis , 2008, IEEE Transactions on Magnetics.

[11]  D. Howe,et al.  Comparative Studies on Linear Motor Topologies for Reciprocating Vapor Compressors , 2007, 2007 IEEE International Electric Machines & Drives Conference.

[12]  X. Chen,et al.  Modeling and Analysis of a Tubular Oscillating Permanent Magnet Actuator , 2008, 2008 IEEE Industry Applications Society Annual Meeting.

[13]  Shinichiro Fujimori,et al.  The impacts of China’s household consumption expenditure patterns on energy demand and carbon emissions towards 2050 , 2012 .