Analysis of solenoid based linear compressor for household refrigerator

被引：30
|
作者：
Bijanzad, A. [1 ]
Hassan, A. [1 ]
Lazoglu, I. [1 ]
机构：
[1] Koc Univ, Mfg & Automat Res Ctr, Dept Mech Engn, TR-34450 Istanbul, Turkey
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2017年 / 74卷
关键词：
Linear compressor; Pulse width modulation (PWM); Finite element method; Frequency response function; Isentropic efficiency; Solenoid; SHORT-STROKE; ACTUATOR; PERFORMANCE;
D O I：
10.1016/j.ijrefrig.2016.10.015
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
This article presents the analytical modeling of an oil-free solenoid actuator based linear compressor used in household refrigerators. The stator coil was excited with the pulse width modulated signal which caused linear oscillations in the armature using helical spring. Dynamic characteristics of the linear compressor were studied analytically considering the nonlinearity of the gas and electromagnetic force. The system dynamic models were validated with the finite element simulation as well as a specially designed experimental setup. Frequency response functions of stroke to current as well as pressure to current ratios were generated to evaluate the effect of excitation frequency on the compressor performance. The higher efficiency of the solenoid actuator was achieved when excited at the natural frequency. The results show that the natural frequency of the designed system is around 19 Hz and the work done in a cycle is approximately 1.3 J. Additionally, 47% isentropic and 87% electrical efficiency were achieved. (C) 2016 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：116 / 128
页数：13
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