Cabin Power Distribution Systems and Methods
Vehicle power distribution systems are described comprising one or more converter units in electrical communication with a vehicle power source. The converter unit is configured to receive a three-phase, high-frequency alternating current generated by the vehicle power source, and output a single phase or dual phase first current. Power outlets and/or data ports may be in electrical communication with the converter unit, such that they can receive the first current. The system may also have a simple power supply that can receive the first current and convert this to a second current, which can be used to power in-flight entertainment devices and other components of the vehicle.
1 . A vehicle power distribution system, comprising:
an aircraft power source providing an aircraft current, wherein the aircraft current is a three-phase, high-frequency alternating current having a first frequency from a power source;
a converter unit configured to receive the aircraft current and to generate a single phase first current, and wherein the first current comprises a second frequency that is less than the first frequency, and wherein the converter unit is configured to provide phase balancing of the input current; and
a plurality of power outlets in electrical communication with the converter unit, wherein the plurality of power outlets is configured to receive the first current.
2 . The vehicle power distribution system of claim 1 , wherein the three-phase, high-frequency alternating current and the first current each have a voltage between 100-122 VAC.
3 . The vehicle power distribution system of claim 1 , wherein the first current comprises a single phase, alternating current having a fixed frequency.
4 . The vehicle power distribution system of claim 1 , wherein the first current comprises a dual phase, alternating current having a fixed frequency.
5 . The vehicle power distribution system of claim 1 , wherein the output of the converter unit is constructed to be line-to-line.
6 . The vehicle power distribution system of claim 1 , wherein the output of the converter unit is constructed with a neutral return.
7 . The vehicle power distribution system of claim 1 , wherein the first frequency is between 300-1,000 hertz and the second frequency is between 30-60 hertz.
8 . The vehicle power distribution system of claim 1 , wherein the second frequency is approximately 60 hertz.
9 . The vehicle power distribution system of claim 1 , wherein the first current is received by the power outlets.
10 . The vehicle power distribution system of any of claim 9 , wherein the power outlet comprises an AC power outlet, a universal serial bus port, or an inductive charger.
11 . (canceled)
12 . The vehicle power distribution system of claim 1 , further comprising:
a control unit configured to receive the first current from the converter unit and enable or disable a flow of the first current to the power outlet based on one or more factors.
13 . The vehicle power distribution system of claim 12 , wherein the control unit is configured to receive a signal that a plug is detected in the power outlet.
14 . The vehicle power distribution system of claim 12 , wherein the control unit is configured to monitor the first current and disable the flow of the first current to the power outlet if a voltage of the first current exceeds a first threshold or is less than a second threshold.
15 . The vehicle power distribution system of claim 12 , wherein the control unit is configured to monitor the first current and disable the flow of the first current to the power outlet if the first current exceeds a first threshold or is less than a second threshold.
16 . The vehicle power distribution system of claim 12 , wherein the control unit is configured to receive an input from an operator or another system of the vehicle, and wherein the controller is configured to enable or disable a flow of the first current to the power outlet based the input.
17 . The vehicle power distribution system of claim 12 , wherein the control unit is configured to implement a tri-state control of the power outlet, wherein the three states applied to the power outlet comprise an enabled mode, a restricted mode, and a disabled mode.
18 . The vehicle power distribution system of claim 1 , further comprising:
a power supply disposed at a seat group configured to receive first current and output a second current in response to the first current;
an aircraft device in electrical communication with the power supply, wherein the aircraft device is configured to receive power from the second current, and wherein the first current is different than the second current, and wherein the second current comprises a direct current.
19 . (canceled)
20 . The vehicle power distribution system of claim 18 , wherein the first current comprises a frequency between 30-60 hertz and a voltage between 110-120 VAC, and wherein the second current comprises a voltage of less than 50 VDC.
21 . The vehicle power distribution system of claim 18 , wherein the first current and the second current are in galvanic isolation from one another.
22 . The vehicle power distribution system of claim 18 , wherein the aircraft device comprises a universal serial bus port, an in-use light, or an in-flight entertainment system.