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Static and dynamic characteristics of a novel moving magnet linear compressor
Hong-yue Chen,Zhangquan Lv,Xianyang Liu,Chen Chen 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.1
Linear compressors are popular in the field of household refrigeration due to their high efficiency and excellent capacity modulation capability. In this study, we proposed a novel moving magnet linear compressor and investigated its static and dynamic characteristics. Static performance included static shaft force, force constant, and magnetic spring, which were examined via finite element analysis and verified by conducting specific thrust experiments. For dynamic characteristics, resonance frequency, piston stroke, and piston offset were calculated by considering the magnetic spring effect. Compared with the results that didn’t consider the magnetic spring effect, higher accuracy was achieved under various conditions. In addition, piston offset increased with discharge pressure, but it was insensitive to changes in piston stroke. The motor efficiency of the designed linear compressor prototype can reach 0.92 under no-load condition and 0.80 under a discharge pressure of 0.6 MPa with a stroke of 9 mm under air condition.