Abstract: A method of power demand management is provided. The method includes an electrically powered climate control unit (CCU) detecting one or more additional electrically powered CCUs in a vicinity of the electrically powered CCU and the CCU establishing a communication link with the one or more additional electrically powered CCUs. The method includes generating and transmitting a pending power request to demand power from the power source to the CCU. The CCU monitors for one or more additional pending power requests from the one or more additional CCUs and monitors its position within a power request queue for obtaining power from the power source amongst the CCU and the one or more additional CCUs. Also, the method includes the electrically powered CCU demanding power from the power source when its position within the power request queue is high enough to demand power from the power source.

Abstract: A power distribution unit (PDU) for use with an electrically powered accessory is disclosed. The PDU includes at least one power input configured to receive electrical power from an electrical supply equipment and/or a second power source. The PDU also includes an accessory power interface configured to provide power to the electrically powered accessory. The PDU further includes a vehicle power interface configured to provide power to a vehicle electrical system of the vehicle. Also the PDU includes at least one switch configured to selectively connect the at least one power input to a power bus, and selectively connect the power bus to at least one of the accessory power interface and the vehicle power interface. The PDU also includes a controller configured to control the at least one switch to provide power to the electrically powered accessory and/or the vehicle electrical storage device of the vehicle electrical system.

Abstract: A method for managing energy to a transport climate control system from a vehicle electrical system is provided. The vehicle electrical system includes a vehicle power network and an auxiliary power network connected to a transport climate control load network via a DC regulated bus. The method includes monitoring a vehicle voltage of the vehicle power network and determining whether the vehicle power network requires holdover assistance based on the vehicle voltage. Also, the method includes the bus sending vehicle power energy generated by the vehicle power network to the transport climate control load network without assistance of the auxiliary power network when the controller determines that the vehicle power network has sufficient power capacity available, and the bus sending the vehicle power energy and auxiliary power energy stored by the auxiliary power network to the transport climate control load network when the controller determines that the vehicle power network requires holdover assistance.

Abstract: There is disclosed a scrubber apparatus 300 for a refrigerated transport container 100 having a cargo space 105, comprising: a regenerating adsorber 302; a manifold 306, 308 in fluid communication with a first side of the adsorber, an interior gas port 318, 338 for fluid communication with interior gas in the cargo space and an exterior gas port 320, 340 for fluid communication with exterior gas outside of the cargo space; and a common actuator configured to actuate both an adsorption control damper 314, 334 for controlling selective fluid communication between the adsorber and interior gas, and a regeneration control damper 316, 336 for controlling selective fluid communication between the adsorber and exterior gas. There is also disclosed a scrubber apparatus 300 which is configured to heat interior gas provided to an adsorber for removal of a controlled gas. Methods of operating a scrubber apparatus are also disclosed.

Abstract: A climate control system for use in a transport vehicle is disclosed. The climate control system includes a variable speed electric load, a controller configured to determine a load of the variable speed electric load, and a battery pack voltage configurator circuit. The battery pack voltage configurator circuit includes a first battery bank providing a first voltage and a first current, a second battery bank providing a second voltage and a second current, and a plurality of switches. The controller is configured to control the plurality of switches based on the determined load of the variable speed electric load. The battery pack voltage configurator circuit is configured to provide an output voltage and an output current to drive the variable speed electric load. The output voltage and the output current vary in magnitude based on the control of the plurality of switches.

Abstract: An inverter-converter system includes a DC source, a DC to DC boost converter, a DC link capacitor, an inverter circuit, a variable speed electric machine, and a controller. The DC to DC boost converter receives an input DC voltage from the DC source. The inverter circuit converts the variable boosted voltage to an AC voltage to drive the variable speed electric machine. The controller senses a plurality of parameters from the variable speed electric machine, and controls the DC to DC boost converter to boost up the input DC voltage to a variable output voltage based on the plurality of parameters and/or the voltage (or load) needed by the variable speed electric machine. The design of the inverter-converter system can achieve an electrical efficiency and cost savings for the overall system.

Abstract: A method for power management of a transport refrigeration system electrically connected to a utility power source. The method including determining an operating mode for the transport refrigeration system based on one or more of an amount of utility power available from the utility power source to the transport refrigeration system, a current cost of the utility power, and a noise or emission regulation for operating a prime mover. A transport refrigeration system unit that includes a transport refrigeration unit and a controller configured to receive power from a utility power source or a primary energy source. The controller also configured to determine an operating mode for the transport refrigeration system based on one or more of an amount of utility power available from the utility power source to the transport refrigeration system, a current cost of the utility power, and a noise or emission regulation for operating the prime mover.

Abstract: A method for adaptive power engine control of a transport refrigeration unit (TRU) is provided. The method includes determining a current compressor power of a compressor of the TRU. The method also includes determining an adaptive compressor power error of the compressor. Also, the method includes calculating and setting a target compressor power of the compressor based on the current compressor power and the adaptive compressor power error. Further, the method includes determining a suction pressure control point of the compressor based on the target compressor power and a compressor curve map. Moreover, the method includes operating the compressor with the suction pressure control point of the compressor.

Abstract: Methods and systems for detecting and correcting improper operation of a compressor in a refrigeration system and/or an HVAC system include a component level detection and prevention and a system level detection and prevention. The system level detection and prevention can be a backup or a confirmation of the component level detection and prevention. The component level detection and prevention can detect and prevent improper compressor operation within a predetermined time so that the compressor's operation period in an improper direction can be minimized, thereby minimizing wear and damage to the compressor.

Abstract: Systems and methods for providing load shedding in a vehicle are provided. Particularly, the vehicle may be an electric vehicle and the loads that are shed may be HVAC or refrigeration loads. The load shedding methods and systems may include a predictive model of energy consumption, determining a predicted energy consumption and comparing it to a stored energy at the vehicle. If the predicted energy consumption exceeds the stored energy, load shedding operations may be performed at a transport climate control system, such as adjusting a set point, adjusting an operating mode of the transport climate control system, increasing a dead band of a compressor of the transport climate control system, utilizing free cooling such as ambient air to provide climate control in the vehicle, or increasing cooling provided by the transport climate control system to an energy storage of the vehicle.

Abstract: A method for powering a vehicle powered transport climate control system is provided. The method includes determining an amount of power requested by a load of the vehicle powered transport climate control system. The method also includes determining a vehicle power amount available from a vehicle power network. Also, the method includes calculating an auxiliary power amount from an auxiliary power network to augment the vehicle power amount from the vehicle power network. Further, the method includes converting power from the vehicle power network and power from the auxiliary power network into a load power and supplying the load power to the load of the vehicle powered transport climate control system. Also, a maximum amount of vehicle power available from the vehicle power network is less than a maximum amount of power required by the load of the vehicle powered transport climate control system.

Abstract: A method for monitoring and displaying energy use and energy cost of a transport vehicle climate control system is provided. The method includes a controller monitoring and measuring energy parameters of the transport vehicle climate control system. The method also includes calculating energy utilization of the transport vehicle climate control system based on the energy parameters. Also, the method includes calculating energy costs of the transport vehicle climate control system based on the calculated energy utilization. Further, the method includes displaying the calculated energy utilization and the calculated energy costs of the transport climate control system on a user interface.

Abstract: Methods and systems for operating a transport climate control system of a vehicle are provided. The method includes obtaining a state of charge of an energy storage device capable of providing power to the transport climate control system; determining an energy level including the state of charge, receiving a planned route for the vehicle, and receiving route status data associated with the planned route for the vehicle. The route status data includes traffic data, weather data, and/or geographic data identifying areas where the transport climate control system is to be solely powered by the energy storage device. The method further includes determining whether the energy level is sufficient to complete the planned route for the vehicle based on the planned route and the route data, and when the energy level is not sufficient to complete the planned route for the vehicle, providing a notification to a user via a display.

Abstract: A power cord for transferring power to an electrically powered accessory configured to be used with at least one of a vehicle, a trailer, and a transport container is provided. The power cord includes a DC wire portion, an AC wire portion, and a single plug at one end of the power cord. The DC wire portion provides DC power to the electrically powered accessory. The AC wire portion provides AC power to the electrically powered accessory. The DC wire portion and the AC wire portion each have a first end and a second end. The single plug is connected to the first end of the DC wire portion and connected to the first end of the AC wire portion and includes an AC contact arrangement, a DC contact arrangement, and a communication contact arrangement.

Abstract: Methods and systems for feedback-based load control of a climate control system while in transport are provided. The method can include monitoring a current demand from each of a plurality of DC components of the climate control system. The method can also include determining whether the current demand for two or more of the plurality of DC components is in a discontinuous DC format. Also, the method can include, when two or more of the plurality of DC components is in the discontinuous DC format, determining a synchronization pattern for supplying power to the two or more of the plurality of DC components. Further, the method can include a DC power source of the climate control system directing power to the two or more of the plurality of DC components in the discontinuous DC format based on the synchronization pattern.

Abstract: Methods and systems for efficient power management of a finite power storage unit that provides a finite amount of power to a vehicle accessory are provided. The method includes receiving an input parameter. The input parameter includes one of a desired runtime for the vehicle accessory and a desired condition setting for the vehicle accessory. The method also includes receiving an environment data. Also, the method includes a processor determining an output parameter based on the input parameter and the environment data. The output parameter includes one of an acceptable condition setting for the vehicle accessory and a predicted runtime for the vehicle accessory. Further, the method includes providing the output parameter to a display for displaying the output parameter.

Abstract: Methods and systems for controlling energy source for a mild hybrid system that powers a transport climate control system are provided. The mild hybrid system includes a DC energy source configured to supply a first DC voltage to the transport climate control system. The system also includes an inverter connected to the DC energy source and configured to change the first DC voltage from the DC energy source to a first AC voltage. The system further includes a transformer connected to the inverter and configured to convert the first AC voltage to a second AC voltage. Also the system includes a motor that drives a compressor. The motor is driven by the second AC voltage, the second AC voltage is greater than the first AC voltage.