METHOD FOR CONTROLLING A COMPRESSOR OF A REFRIGERATION SYSTEM, SAID COMPRESSOR HAVING A MOTOR, AND COMPRESSOR OF A REFRIGERATION SYSTEM

摘要

In the method according to the invention for controlling a compressor of a refrigeration system, said compressor having a motor, the refrigerant flow through the compressor is controlled by means of at least one valve, wherein the valve is either opened or closed in a cycle of consecutive and equally long intervals, so that the valve is either completely closed or completely open during an interval, wherein a. a percentage output of the compressor corresponding to the momentary cooling demand of a cooling point is determined, b. the percentage opening time of the valve is determined over a number of intervals which comprise the current interval and preceding intervals running up to the current interval, c. the valve is opened for the following interval if the ratio of the percentage output of the compressor corresponding to the cooling demand is greater than the percentage opening time of the valve previously determined, and d. the valve is closed for the following interval if the ratio of the percentage output of the compressor corresponding to the cooling demand is less than the percentage opening time of the valve previously determined.