Power manager with reconfigurable power converting circuits
A distributed power network includes a power bus infrastructure distributed over a region with node points provided to interface with controllable power nodes. Each power node can be connected to an external power device such as a DC power source, a DC power load, or a rechargeable DC battery. The power nodes form a communication network and cooperate with each other to receive input power from DC power sources and or rechargeable DC batteries connected to the power bus infrastructure and distribute the power received therefrom to the power bus infrastructure for distribution to the DC power loads and to rechargeable DC batteries.
1 . A power node comprising:
a first device port for connecting the power node to a power bus;
a second device port for connecting an external power device to the power node;
a processor for controlling the power node and for communicating with other power nodes over a communication network;
a power node communication interface operatively interfaced with the processor for to enable communication with other power nodes;
a power device communication interface operatively interfaced with the processor for enabling communication with a first external power device interfaced with the second device port;
wherein the processor is operable to:
receive information from the first external power device including the operating characteristics of the external power device;
establish a communication session with a second power node, the second power node operable to connect the second power node to the power bus;
receive, from the second power node, information including operating characteristics of a second external power device that is interfaced with the second power node; and
configure an operating mode of the power node based at least upon the operating characteristics of the first external power device and the operating characteristics of the second external power device.
2 . The power node of claim 1 , wherein the processor is further operable to establish a communication session with each of two or more second power nodes, receive information from each of the two or more second power nodes, and configure the operating mode of the power node based at least upon the operating characteristics of the two or more second power nodes.
3 . The power node of claim 2 , wherein the processor is further operable to determine an operating configuration of each of the two or more second power nodes.
4 . The power node of claim 1 , wherein the operating mode of the power node comprises receiving power from the power bus and providing the power to the first external power device.
5 . The power node of claim 4 , wherein providing power to the first external power device comprises one or more of converting a voltage of a power signal received from the power bus to a voltage that is compatible with the operating characteristics of the first external power device and modulating a current of a power signal received from the power bus.
6 . The power node of claim 1 , wherein the power bus comprises a power source operatively connected to the power bus to provide power to the power bus and wherein configuring the operating mode of the power node comprises converting a voltage of a power signal provided by the power source to a voltage that is compatible with the operating characteristics of the first external power device.
7 . The power node of claim 1 , wherein configuring the operating mode of the power node comprises configuring the power node to operate a maximum power point tracking algorithm to modulate an amount of power received from an unstable power source.
8 . A distributed power network comprising:
a power bus architecture;
a first power node operable to connect with a first external power device and a second power node operable to connect with a second external power device, each of the first power node and the second power nodes comprising:
a first device port for connecting the power node to the power bus architecture;
a second device port for connecting an external power device to the power node;
a processor for controlling the power node and for communicating with other power nodes over a communication network;
a power node communication interface operatively interfaced with the processor for enabling communication with other power nodes; and
a power device communication interface operatively interfaced with the processor for enabling communication with a first external power device interfaced with the second device port;
wherein the first device port of each of the first and the second power nodes is operable to connect with the power bus architecture, the second device port of the first power node is operable to interface with the first external power device, and the second device port of the second power node is operable to interface with the second external power device;
wherein the first node is operable to:
determine characteristics of the first external power device by communicating with the first external power device;
determine characteristics of the second external power device by establishing a network communication session with the second power node and receiving information including characteristics of the second external power device from the second power node; and
configure an operating mode of the first power node based at least upon the characteristics of the first external power device and the characteristics of the second external power device.
9 . The distributed power network of claim 8 , wherein:
the first power node is operable to determine a predicted operating mode of the second power node based at least upon the characteristics of the first external power device and the characteristics of the second external power device.
10 . The distributed power network of claim 9 , wherein the first power node is operable to determine an operating configuration of the second power node, to compare the operating configuration of the second power node to the predicted operating mode of the second power node, and to disconnect the first power device from the power bus if the operating configuration of the second power node differs from the predicted operating mode of the second power node.
11 . The distributed power network of claim 8 , wherein the first power node is operable to determine a load priority of the first external power device and a load priority of the second external power device and to configure the operating mode of the first power node to preferentially provide power to whichever of the first and second external power devices has a higher load priority.
12 . The distributed power network of claim 8 ,
wherein the first external power device comprises a rechargeable battery operatively connected to the first power node, and
the second external power device comprises a power load operatively connected to the second external power node; and
wherein the first power node is operable to:
provide charging power to the rechargeable battery when sufficient power is available from the power bus architecture; and
provide power from the rechargeable battery to the power bus architecture when there is not sufficient power available from the power bus architecture to power the second external power device.
13 . The distributed power network of claim 12 , wherein the second external power device comprises a power load having a higher load priority than the first external power device.
14 . The distributed power network of claim 8 , further comprising a power source directly connected to the power bus architecture and providing power at a power bus voltage, wherein each of the first power node and the second power node are each operable to convert the power bus voltage to a voltage that is compatible with an operating voltage of an external power device interfaced the power node.
15 . The distributed power network of claim 14 , wherein each of the first power node and the second power node is operable to modulate a magnitude of current of power drawn from the power bus architecture and to provide power to an external power device based on operating characteristics of the external power device communicated to the power node from the external power device.
16 . The distributed power network of claim 8 , further comprising a third power node wherein the third power node is interfaced with the power bus architecture and with a power source, wherein the third power node is operable to provide power from the power source to the power bus architecture at a power bus voltage.
17 . The distributed power network of claim 16 , wherein the power source comprised an unstable power source having a time-varying input power amplitude and the third power node is operable to operate a maximum power point tracking algorithm to convert the time varying input power amplitude to a bus power having a substantially constant voltage and modulate an amount of power provided to the power bus architecture from the power source.
18 . A distributed power network comprising:
a power and data infrastructure;
a plurality of power nodes, each power node operable to interface with the power and data infrastructure, to interface with an external power device, and
each power node comprising a processor operable to establish a communication network among the plurality of power nodes, to communicate with the external power device, and to control an operating configuration of the power node;
wherein the processor comprising a first power node of the plurality of power nodes is operable to:
determine operating characteristics of a first external power device interfaced with the first power node;
receive information including operating characteristics of one or more additional external power devices, each additional external power device interfaced with another of the plurality of power nodes; and
determine an operating configuration of the first power node based at least upon the operating characteristics of the first external power device and the operating characteristics of the one or more additional external power devices.
19 . The distributed power network of claim 18 , wherein the first power node is operable to determine an operating configuration of each of the others of the plurality of power nodes.
20 . The distributed power network of claim 19 , wherein the processor comprising the first power node is operable as a master controller.