Intelligent DC Power Management System
The invention may be embodied as a system or method of controlling DC power distribution using electronic power switches (“EPSs”) are disclosed. Current sensors may be used to monitor the performance of the electronic power switches. Load systems are electrically connected to outputs of the EPSs. An acceptable output current is determined for each EPS, and the EPSs are controlled to provide those acceptable currents. Operating parameters may be provided by a remote user via a network interface. Control power may be conditioned and isolated for proper operation of the DC power management system.
1 . A direct-current control and distribution system, comprising:
one or more electronic power switches (“EPSs”), each having an input terminal and an output terminal, each input terminal being electrically connected to a supply of direct current electricity; and
one or more current sensors for monitoring currents being supplied by each EPS.
2 . The system of claim 1 , wherein each output terminal is electrically connected to a different load.
3 . The system of claim 1 , wherein the EPSs are MOSFETs.
4 . The system of claim 1 , wherein the one or more current sensors are active current sensors.
5 . The system of claim 1 , wherein the one or more current sensors are passive current sensors.
6 . The system of claim 5 , wherein the current sensor is a Hall effect sensor.
7 . The system of claim 1 , further comprising a micro-controller and a program for controlling operation of the micro-controller, the program having instructions for causing the micro-controller to determine a level of DC current in one or more circuits, and for causing the micro-controller to adjust the one or more EPSs in response to the determined DC current level(s).
8 . The system of claim 7 , wherein the program causes the micro-controller to adjust the one or more EPSs during turn-on of a load system that draws power from the one or more EPSs.
9 . The system of claim 8 , wherein the EPSs are controlled by the micro-controller to limit the current supplied to the load systems.
10 . The system of claim 8 , wherein the adjustments made by the micro-controller are accomplished according to user-defined parameters.
11 . The system of claim 7 , further comprising a solid-state micro-controller-readable medium having the program stored or embedded thereon.
12 . The system of claim 7 , wherein the program includes instructions for causing the EPSs to turn on in small increments.
13 . The system of claim 12 , wherein the increments are selected to limit individual or aggregate load current to levels which are within maximum operating parameters of the EPSs.
14 . The system of claim 7 , wherein the program includes instructions for causing the micro-controller to control the EPSs in order to keep the power supplied by each EPS to the loads at a safe level.
15 . The system of claim 7 , wherein the micro-controller can be used to provide power to a single load system or multiple load systems, either via a single EPS or multiple EPSs.
16 . The system of claim 7 , wherein each EPS has an output electrically connected to a load system, and wherein the micro-controller is programmed to provide instructions to the EPSs to sequentially power individual load systems such that high demand for electricity caused by turning-on a load system is reduced.
17 . The system of claim 1 , further comprising a printed circuit board and circuit layout which lowers parasitic inductance and increases current throughput.
18 . A method of controlling distribution of DC electric power, comprising:
providing one or more electronic power switches (“EPSs”), each EPS having an input terminal and an output terminal, the input terminals being electrically connected to one another;
providing one or more current sensors arranged to monitor electric current supplied by at least one of the EPSs to one or more load systems; and
controlling DC power output from each output terminal using the one or more EPSs.