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.
Abstract:
A system and method for configuring a transport refrigeration unit (TRU) battery charger in a transport refrigeration system (TRS) is provided. The method includes receiving battery topology data indicating a battery topology of a TRU battery equipped in the TRS. The method also includes determining specific parameters for configuring a battery charging algorithm based on the battery topology data. Also, the method includes the TRU battery charger configuring the battery charging algorithm based on the specific parameters.
Abstract:
A mobile environment-controlled unit, such as an over-the-road compartment trailer, having an environmental-control system, such as a refrigeration unit, powered by an alternator and having a high-voltage alternating current (AC) bus. The unit incorporates a high resistance ground scheme and can incorporate a solid-state input module to detect phase-chassis faults. This combination provides an improvement in protection for mobile applications that cannot have a voltage reference (or neutral point) solidly connected to earth ground.
Abstract:
A system and method for configuring a transport refrigeration unit (TRU) battery charger in a transport refrigeration system (TRS) is provided. The method includes receiving battery topology data indicating a battery topology of a TRU battery equipped in the TRS. The method also includes determining specific parameters for configuring a battery charging algorithm based on the battery topology data. Also, the method includes the TRU battery charger configuring the battery charging algorithm based on the specific parameters.
Abstract:
A system and method for controlling a current draw in a transport refrigeration system (TRS) including an electronically controlled engine having an engine control unit (ECU) are disclosed. The method includes disabling the ECU in response to the electronically controlled engine entering an operating mode in which the electronically controlled engine is not running. The TRS controller determines an ambient temperature based on a temperature outside an internal space of the refrigerated transport unit. The TRS controller initializes an ECU off timer when the ambient temperature is less than or equal to an ambient temperature threshold.
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.
Abstract:
A transport refrigeration unit (TRU) battery charging system includes a programmable transport refrigeration system (TRS) Controller, a TRU battery and a programmable battery charger (BC) programmed to transfer electrical current to the TRU battery via a predetermined current path through the programmable TRS Controller in response to a value of offset current drawn from the TRU battery by the programmable TRS Controller and subsequently communicated to the programmable BC by the programmable TRS Controller. The programmable TRU battery charger allows for a dynamic load characterization of the programmable IRS Controller and accessory loads based on programmable TRU battery charger internal shunt current measurements and programmable TRS Controller internal shunt current measurements to allow the programmable TRU battery charger to function properly with all intended modes of operation.
Abstract:
A transport refrigeration unit (TRU) battery charging system includes a programmable transport refrigeration system (TRS) Controller, a TRU battery and a programmable battery charger (BC) programmed to transfer electrical current to the TRU battery via a predetermined current path through the programmable TRS Controller in response to a value of offset current drawn from the TRU battery by the programmable TRS Controller and subsequently communicated to the programmable BC by the programmable TRS Controller. The programmable TRU battery charger allows for a dynamic load characterization of the programmable TRS Controller and accessory loads based on programmable TRU battery charger internal shunt current measurements and programmable TRS Controller internal shunt current measurements to allow the programmable TRU battery charger to function properly with all intended modes of operation.
Abstract:
A mobile environment-controlled unit, such as an over-the-road compartment trailer, having an environmental-control system, such as a refrigeration unit, powered by an alternator and having a high-voltage alternating current (AC) bus. The unit incorporates a high resistance ground scheme and can incorporate a solid-state input module to detect phase-chassis faults. This combination provides an improvement in protection for mobile applications that cannot have a voltage reference (or neutral point) solidly connected to earth ground.
Abstract:
A mobile environment-controlled unit, such as an over-the-road compartment trailer, having an environmental-control system, such as a refrigeration unit, powered by an alternator and having a high-voltage alternating current (AC) bus. The unit incorporates a high resistance ground scheme and can incorporate a solid-state input module to detect phase-chassis faults. This combination provides an improvement in protection for mobile applications that cannot have a voltage reference (or neutral point) solidly connected to earth ground.