Method of controlling compressor for refrigerator
AssigneeSamsung Electronics Co., Ltd.
InventorHan-Ju Yoo
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Abstract
A method of controlling a refrigerator including a power supply unit, an inverter applying three-phase power to a compressor is disclosed. The compressor is driven initially for a predetermined period of time. If the RPM of the compressor is not within the range between a maximum and a minimum RPM, a controller determines a malfunction of the compressor or a disconnection between the inverter and compressor during the predetermined period of time. The controller increases the number of the malfunction by one whenever the malfunction is determined. If the increased number is greater than a given number, the controller stops the compressor and alerts user to the malfunction.
Claims22
A method of controlling a refrigerator including an inverter generating three phase powers, a motor driven by said three-phase powers, and a controller controlling said inverter, said method comprising the steps of:
- allowing said inverter to drive said motor for a predetermined period of time;
- detecting a frequency by using a reverse electromotive force generated between said motor and said inverter;
- comparing said frequency with a reference range;
- counting the number of times which increases whenever said frequency is out of said range;
- and determining a state of said refrigerator corresponding to said number of times.
A method of controlling a refrigerator including an inverter generating three phase powers, a motor driven by said three-phase powers, and a controller controlling said inverter, said method comprising the steps of:
- detecting a reverse electromotive force generated between said inverter and said motor;
- generating a frequency corresponding to said reverse electromotive force;
- comparing said frequency with a reference range having a upper limit and lower limit;
- increase a number when said frequency is lower than lower limit or higher than said upper limit;
- and
- determining that an abnormal state exists in said refrigerator when said number is greater than a reference number.
Dependencies are inferred from the claim text.