A novel dual-piston linear compressor consisting of two piston-cylinder assemblies and a linear electric motor was constructed. To explore the performance of the dual-piston linear compressor, a numerical model that contains a thermodynamic sub-model, dynamic sub-model, three-phase linear motor sub-module, and control system sub-model was built. Several piston trajectories and different operating conditions were assessed to investigate the performance of the dual piston linear compressor. Results from both the simulation and experiments indicate that the system with the triangle curve trajectory exhibits the best performance. The output characteristics (mass flow rate, motor efficiency, mechanical efficiency, and overall efficiency) depend heavily on the operating frequency and the stroke of the piston. For the dual-piston linear compressor system that was designed, the overall efficiency can reach up to 57.59% when the system works at a frequency of 12 Hz and a stroke of 26 mm.

一种新型双活塞线性压缩机由两个活塞气缸组件和一个线性电动机组成。为了探究双活塞直线压缩机的性能，建立了包含热力学子模型、动力学子模型、三相直线电机子模块和控制系统子模型的数值模型。评估了几个活塞轨迹和不同的操作条件，以研究双活塞线性压缩机的性能。仿真和实验结果表明，具有三角形曲线轨迹的系统表现出最佳性能。输出特性（质量流量、电机效率、机械效率和总效率）在很大程度上取决于活塞的工作频率和冲程。