Compressor having a control and diagnostic module
First Claim
1. A method of operating a refrigeration system including a compressor and a capacitor electrically coupled to the compressor, the method comprising:
- measuring, with a voltage sensor, a plurality of voltage values based on alternating current power powering the compressor;
measuring, with a current sensor, a plurality of current values based on the alternating current power;
determining, with a controller in communication with the voltage sensor and the current sensor, a power factor value based on at least one of the plurality of voltage values and at least one of the plurality of current values;
receiving a supply air temperature value from a supply air temperature sensor installed in the refrigeration system;
receiving a return air temperature value from a return air temperature sensor installed in the refrigeration system;
determining, with the controller, a temperature split based on a difference between the return air temperature value and the supply air temperature value;
determining, with the controller, a fault in the capacitor based on the power factor value and the temperature split; and
selectively communicating the fault in the capacitor from the controller to at least one of a user, a service person, a system controller, a remote server, a thermostat, a mobile device, and an email address.
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Accused Products
Abstract
A refrigeration system includes a compressor and a capacitor electrically coupled to the compressor. A method of operating the refrigeration system includes measuring voltage values based on alternating current power powering the compressor. The method includes measuring current values based on the alternating current power. The method includes determining, with a controller, a power factor value based on at least one of the voltage values and at least one of the current values. The method includes receiving a supply air temperature value from an air temperature sensor installed in the refrigeration system. The method includes receiving a return air temperature value from an air temperature sensor installed in the refrigeration system. The method includes determining a temperature split based on a difference between the return and supply air temperature values. The method includes determining a fault in the capacitor based on the power factor value and the temperature split.
1577 Citations
21 Claims
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1. A method of operating a refrigeration system including a compressor and a capacitor electrically coupled to the compressor, the method comprising:
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measuring, with a voltage sensor, a plurality of voltage values based on alternating current power powering the compressor; measuring, with a current sensor, a plurality of current values based on the alternating current power; determining, with a controller in communication with the voltage sensor and the current sensor, a power factor value based on at least one of the plurality of voltage values and at least one of the plurality of current values; receiving a supply air temperature value from a supply air temperature sensor installed in the refrigeration system; receiving a return air temperature value from a return air temperature sensor installed in the refrigeration system; determining, with the controller, a temperature split based on a difference between the return air temperature value and the supply air temperature value; determining, with the controller, a fault in the capacitor based on the power factor value and the temperature split; and selectively communicating the fault in the capacitor from the controller to at least one of a user, a service person, a system controller, a remote server, a thermostat, a mobile device, and an email address. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a voltage sensor configured to measure a plurality of voltage values of alternating current power powering a compressor in a refrigeration system, wherein the refrigeration system includes a capacitor electrically coupled to the compressor; a current sensor configured to measure a plurality of current values based on the alternating current power; and a controller, in communication with the voltage sensor and the current sensor, configured to; determine a power factor value based on at least one of the plurality of voltage values and at least one of the plurality of current values; receive a supply air temperature value from a supply air temperature sensor installed in the refrigeration system; receive a return air temperature value from a return air temperature sensor installed in the refrigeration system; determine a temperature split based on a difference between the return air temperature value and the supply air temperature value; determine a fault in the capacitor based on the power factor value and the temperature split; and selectively communicate the fault in the capacitor to at least one of a user, a service person, a system controller, a remote server, a thermostat, a mobile device, and an email address. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification