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Refrigerator preservation and energy saving has become a consumer is buying the main basis in the process of the refrigerator. Frequency conversion refrigerator system, with its excellent control effect and efficiency, has the good market prospect. So the refrigerator control strategy is very meaningful. The traditional fixed frequency refrigerators because of its large temperature fluctuation, is not conducive to food preservation, and fixed frequency noise big freezer, high energy consumption. In addition, the refrigerator temperature control system is a complex system, the temperature change is often non-linear, time-varying, lagging. Therefore, this paper adopts the fuzzy control, the frequency conversion refrigerator control strategy. This paper's main work is as follows: (1) analyzed the work cycle and thermal performance of refrigeration's compressor, obtained through the experiment of frequency conversion compressor refrigerating capacity, shaft power and COP's relationship with operating conditions. (2) introduces the mathematical model of the refrigeration system, a clear physical significance between each parameter, analyzes the working principle of compression type refrigeration systems. (3) to test the performance of the refrigerator and set up a laboratory freezer test environment, completed the software and hardware design of the lab. (4) the design of frequency conversion refrigerator temperature fuzzy control strategy, in the refrigerator test experiment demonstrates the indoor environment test.
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