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The springless linear oscillatory machine (SLOM) can overcome the defects of large mass, large volume and high cost caused by mechanical springs, making it a prevailing solution for the linear compressor system. In this paper, an electromagnetic analysis of a springless linear oscillatory machine is carried out via established the equivalent magnetic circuit model, which divides the SLOM into a multi-segment structure, and takes the influence of the leakage flux into consideration. Simulation results show that the analytical model can well calculate the electromagnetic characteristics of the motor.

Springless linear oscillatory machine, linear compressor, equivalent magnetic circuit, electromagnetic characteristics