Method and system for detecting and managing an electrical phase loss condition in a climate controlled transport system
AssigneeThermo King Corporation
InventorsRyan Wayne Schumacher, Matthew S. Nelson, Ashok Muralidhar
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Abstract
A method for detecting and managing an electrical phase loss condition in a climate controlled transport unit (CCTU) is provided. The method includes monitoring a generator phase signal outputted from a generator of the CCTU. The method also includes calculating, via a CCTU controller, a phase shift amount based on the generator phase signal. Also, the method includes detecting an electrical phase loss condition based on the phase shift amount.
Claims19
A method for detecting and managing an electrical phase loss condition in a climate controlled transport unit (CCTU), comprising:
- monitoring, via a current sensor, electrical power having multiple phases outputted by a generator of the CCTU, the current sensor outputting a generator phase signal indicative of the multiple phases of the electrical power;
- calculating, via a CCTU controller, a phase shift amount based on the generator phase signal;
- detecting an electrical phase loss condition based on the phase shift amount;
- and
- executing, via the CCTU controller, an electrical phase loss management procedure when the phase loss condition is detected, the electrical phase loss management procedure including the CCTU controller generating an alert that the electrical phase loss condition is detected.
A electrical phase loss detection system for a climate controlled transport unit (CCTU), the electrical phase loss detection system comprising:
- a generator configured to convert mechanical energy generated by a prime mover into multiple phase power;
- a current sensor configured to monitor the multiple phase power and output a generator phase signal indicative of the multiple phase power outputted by the generator;
- and
- a controller configured to detect an electrical phase loss condition based on the generator phase signal, the controller also being configured to generate an alert when an electrical phase loss condition is detected.
A climate controlled transport unit (CCTU) comprising:
- a transport unit;
- a transport refrigeration system (TRS) for controlling an environmental condition within the transport unit;
- a prime mover configured to power the TRS;
- a generator configured convert mechanical energy generated by the prime mover into electrical energy, wherein the electrical energy is outputted as multiple phase electrical power;
- a current sensor configured to monitor the multiple phase electrical power and output a generator phase signal;
- and
- a controller configured to detect an electrical phase loss condition based on the generator phase signal.
Dependencies are inferred from the claim text.