Power distribution unit with fewer components and system
A lower-cost power distribution apparatus (PDU) using a lesser number of components that connects with many power supply units. The PDU comprises first and second switching modules, for outputting AC from a first or a second power source. The first switching module and the second switching module automatically switch between opposite states (turned on or turned off) based on the AC power source. At a given instant, the first switching module and the second switching module are in opposite states.
1. A power distribution unit (PDU) connected with a plurality of power supply units (PSUs), the PDU with a first input terminal and a second terminal; the first input terminal receiving an alternating current (AC) from a first power source, and the second input terminal receiving an AC from a second power source; the PDU comprising:
a connection module connected with the plurality of PSUs;
a first switching module connected between the first input terminal and the connection module, and configured to switch between a turn-on state and a turn-off state;
a second switching module connected between the second input terminal and the connection module, and configured to switch between a turn-on state and a turn-off state;
a processor configured to control such that wherein in the turn-on state, the first switching module establishes a connection between the first input terminal and the connection module, in the turn-off state, the first switching module disconnects the first input terminal with the connection module; in the turn-on state, the second switching module establishes a connection between the second input terminal and the connection module, in the turn-off state, the second switching module disconnects the second input terminal with the connection module; in any point in time, the first switching module and the second switching module are in opposite states;
wherein the connection module comprises a first input pin, a second input pin, a third input pin, at least one function pin, and at least one output port; three live lines of the first power source are electrically connected to the first input pin, the second input pin, the third input pin through the first switching module; three live lines of the second power source are electrically connected to the first input pin, the second input pin, the third input pin through the second switching module; neutral lines of the first power source and the second power source are electrically connected to the at least one function pin; the at least one output port is electrically connected to the PSU.
2. The PDU of claim 1 , wherein when the first input terminal receives the AC from the first power source and the second input terminal receives the AC from the second power source, the first switching module is in the turn-on state, and the second switching module is in the turn-off state, the connection module outputs the AC from the first switching module generated by the first power source to the connected PSU.
3. The PDU of claim 2 , wherein the first switching module and the second switching module are automatic transfer switching elements; when the AC of the first power source fluctuates, the first switching module automatically switches to the turn-off state, and the second switching module automatically switches to the turn-on state, the connection module outputs the AC from the second switching module generated by the second power source power source to the connected PSUs.
4. The PDU of claim 1 , wherein a number of the PSUs connected to one PDU is calculated by a power of the PSU and a working current of each PSU.
5. A server system comprising:
a plurality of power supply units (PSUs); and
a plurality of power distribution units (PDUs) connected with the PSUs, each PDU with a first input terminal and a second input terminal; the first input terminal receiving an alternating voltage (AC) from a first power source, the second input terminal receiving an AC from a second power source; each PDU comprising:
a connection module connected with the plurality of PSUs;
a first switching module connected between the first input terminal and the connection module, and configured to switch between a turn-on state and a turn-off state;
a second switching module connected between the second input terminal and the connection module, and configured to switch between a turn-on state and a turn-off state;
a processor configured to control such that wherein in the turn-on state, the first switching module establishes a connection between the first input terminal and the connection module, in the turn-off state, the first switching module disconnects the first input terminal with the connection module; in the turn-on state, the second switching module establishes a connection between the second input terminal and the connection module, in the turn-off state, the second switching module disconnects the second input terminal with the connection module; in any point in time, the states of the first switching module and the second switching module are in opposite states;
wherein the connection module comprises a first input pin, a second input pin, a third input pin, at least one function pin, and at least one output port; three live lines of the first power source are electrically connected to the first input pin, the second input pin, the third input pin through the first switching module; three live lines of the second power source are electrically connected to the first input pin, the second input pin, the third input pin through the second switching module; neutral lines of the first power source and the second power source are electrically connected to the at least one function pin; the at least one output port is electrically connected to the PSU.
6. The server system of claim 5 , wherein the first switching module and the second switching module are automatic transfer switching elements; when the first input terminal receives the AC from the first power source and the second input terminal receives the AC from the second power source, the first switching module automatically switches to the turn-on state, and the second switching module automatically switches to the turn-off state, the connection module outputs the AC from the first switching module generated by the first power source to the connected PSU.
7. The server system of claim 6 , wherein when the AC of the first power source fluctuates, the first switching module automatically switches to the turn-off state, and the second switching module automatically switches to the turn-on state, the connection module outputs the AC from the second switching module generated by the second power source power source to the connected PSUs.
8. The server system of claim 5 , wherein a number of the PSUs connected to one PDU is calculated by a power of the PSU and a working current of each PSU.