Abstract: Examples of an electrically powered transport refrigeration unit (TRU) are disclosed. The TRU may include a refrigeration circuit that includes an electrically powered compressor, an evaporator equipped with an electrically powered blower, and a gas cooler equipped with an electrically powered blower. The TRU may also include a control circuit and a power regulator unit. The power regulator unit may be configured to supply variable DC and/or AC outputs to power components of the refrigeration circuit, and the control circuit may be configured to regulate the variable DC and AC outputs of the power regulator unit so as to control the operation of the TRU. The electrically powered TRU may be configured to use R774 as refrigerant.

Abstract: Embodiments of an electrically powered transport refrigeration unit (TRU) are disclosed. The TRU may include a refrigeration circuit that includes an electrically powered compressor, an evaporator equipped with an electrically powered blower, and a gas cooler equipped with an electrically powered blower. The TRU may also include a control circuit and a power regulator unit. The power regulator unit may be configured to supply variable DC and/or AC outputs to power components of the refrigeration circuit, and the control circuit may be configured to regulate the variable DC and AC outputs of the power regulator unit so as to control the operation of the TRU. The electrically powered TRU may be configured to use R774 as refrigerant.

Abstract: Examples of an electrically powered transport refrigeration unit (TRU) are disclosed. In one example, the TRU may include a refrigeration circuit that includes an electrically powered compressor, an evaporator equipped with an electrically powered blower, and a gas cooler equipped with an electrically powered blower. The TRU may also include a control circuit and a power regulator unit. The power regulator unit may be configured to supply variable DC and/or AC outputs to power components of the refrigeration circuit, and the control circuit may be configured to regulate the variable DC and AC outputs of the power regulator unit so as to control the operation of the TRU. The electrically powered TRU may be configured to use R774 as refrigerant.

Abstract: Embodiments of an electrically powered transport refrigeration unit (TRU) are disclosed. The TRU may include a refrigeration circuit that includes an electrically powered compressor, an evaporator equipped with an electrically powered blower, and a gas cooler equipped with an electrically powered blower. The TRU may also include a control circuit and a power regulator unit. The power regulator unit may be configured to supply variable DC and/or AC outputs to power components of the refrigeration circuit, and the control circuit may be configured to regulate the variable DC and AC outputs of the power regulator unit so as to control the operation of the TRU. The electrically powered TRU may be configured to use R774 as refrigerant.

Abstract: A buck/boost rectifier. The rectifier is connectable to an alternating current power source and includes an upper bus, a lower bus, an upper rectifier, a lower rectifier, a pulse-width-modulation (PWM) controller, a phase-angle (PA) controller, and a capacitor. The upper rectifier is coupled to the upper bus, and the lower rectifier is coupled in a series-type relationship with the upper rectifier and to the lower bus. The PWM controller is coupled to the lower rectifier and is configured to boost a direct current (DC) voltage output by the rectifier. The PA controller is coupled to the lower rectifier and is configured to buck the DC voltage output by the rectifier. The capacitor is coupled between the upper bus and the lower bus.

Abstract: A tractor and trailer combination including a tractor having a tractor frame, a supply unit, a trailer coupling, a skid plate, and a first connector coupled to the tractor frame and coupled to the supply unit to receive at least one of high voltage electrical power and coolant from the supply unit. The combination also includes a trailer having a trailer frame, a tractor coupling rotatably connecting the trailer to the tractor, and a second connector coupled to the trailer and configured to provide the at least one of high voltage electrical power and coolant to the trailer. The combination further includes a conduit having a first end coupled to the first connector, a second end coupled to the second connector. The conduit flexes and is supported between the first and second ends by the skid plate throughout rotation of the trailer relative to the tractor.

Abstract: A buck/boost rectifier. The rectifier is connectable to an alternating current power source and includes an upper bus, a lower bus, an upper rectifier, a lower rectifier, a pulse-width-modulation (PWM) controller, a phase-angle (PA) controller, and a capacitor. The upper rectifier is coupled to the upper bus, and the lower rectifier is coupled in a series-type relationship with the upper rectifier and to the lower bus. The PWM controller is coupled to the lower rectifier and is configured to boost a direct current (DC) voltage output by the rectifier. The PA controller is coupled to the lower rectifier and is configured to buck the DC voltage output by the rectifier. The capacitor is coupled between the upper bus and the lower bus.

Abstract: A tractor and trailer combination including a tractor having a tractor frame, a supply unit, a trailer coupling, a skid plate, and a first connector coupled to the tractor frame and coupled to the supply unit to receive at least one of high voltage electrical power and coolant from the supply unit. The combination also includes a trailer having a trailer frame, a tractor coupling rotatably connecting the trailer to the tractor, and a second connector coupled to the trailer and configured to provide the at least one of high voltage electrical power and coolant to the trailer. The combination further includes a conduit having a first end coupled to the first connector, a second end coupled to the second connector. The conduit flexes and is supported between the first and second ends by the skid plate throughout rotation of the trailer relative to the tractor.