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《Journal of Zhejiang University(Engineering Science)》 2009-01
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Simulation of dynamic characteristics of moving magnet linear compressor for refrigerator

ZHAO Ke,JIN Tao,TONG Shui-guang,ZHENG Shui-ying(Institute of Chemical Machinery,Zhejiang University,Hangzhou 310027,China)  
A prototype of linear compressor was developed and the coupled multi-physics fields dynamic model was established for studying the dynamic characteristic of the machine.The electromagnetic force and flux linkage was evaluated with different displacement and exciting current by the parametric three-dimensional finite element analysis in electromagnetic field.The system state-equation group was resolved by 4-order Runge-Kutta method and interpolation method and the running process of linear compressor was simulated based on the finite element analysis.Some performance figures including current,power,power factor and capacity were tested with different voltages at the exhaust pressure of 5 bar with air as working fluid.Results show that the specific power is within 7~9 kW/(m3/min),witch means that the compressor has good performance in energy consumption.The simulation results accorded with the experimental results.The dynamic model is correct and the simulation is suited for predicting the dynamic behavior of linear compressor during the running period.
【CateGory Index】: TH457
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