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http://dx.doi.org/10.5370/KIEE.2013.62.11.1544

Analysis and Efficiency Control of Linear Compressor System for Refrigerator Driven by PWM Inverter  

Son, Jang-Kyung (Dept. of Electrical Engineering, University of Ulsan)
Chun, Tae-Won (Dept. of Electrical Engineering, University of Ulsan)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.62, no.11, 2013 , pp. 1544-1549 More about this Journal
Abstract
Recently, the linear compressors with the free piston driven by the linear motor have widely attention in the cooling apparatus such as a refrigerator due to high efficiency. The method of using triacs as a linear motor drive is not satisfactory to improve the efficiency of the linear compressor. In this paper, the performance of the linear compressor using a PWM inverter such as the efficiency is investigated with the variations of both mechanical resonant frequency and electrical resonant frequency. The control loop for controlling both the piston stroke and efficiency is suggested. Through simulation and experimental studies, the performance of both the stroke and angle controls for improving the efficiency of the linear compressor is verified.
Keywords
Linear compressor; Inverter; Stroke;
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