Control module for DC power network
A power distribution and control module includes a digital data processor and associated memory module operating an energy management program or schema and a battery charging manager program thereon. The energy management schema is operable to determine an instantaneous configuration of the power and distribution and control module, to determine total instantaneous input power available, total instantaneous power demand by connected power loads and to allocate a portion of the input power to power the loads. Thereafter any unallocated power is allocated to charge rechargeable batteries using allocation criteria that are situationally variable.
1. A power distribution and control module comprising:
an input device port interfaced with a DC power source wherein the DC power source has a source operating voltage;
a plurality of output device ports with one of more of the plurality of output device ports being interfaced with a different DC power load wherein each DC power load has a load operating voltage;
a plurality of unidirectional DC to DC power converters, wherein each DC to DC power converter includes an input terminal electrical interfaced with the input device port and an output terminal electrically interfaced with a different one of the plurality of output device ports;
an input power sensor disposed to sense one of voltage amplitude and current amplitude at each of the input device port and with the input terminal and with each of the plurality of unidirectional DC to DC power converters;
a plurality of output power sensors each disposed to sense one of voltage amplitude and current amplitude corresponding with the output terminal of a different one of the plurality of DC to DC power converters and with the output device port electrically interfaced with the output terminal thereof;
an electronic control module comprising a data processor and an associated memory module wherein the data processor is in communication with each of the plurality of unidirectional DC to DC power converters to submit control signals thereto, with the input power sensor and with each of the plurality of output power sensors to receive sensor signals therefrom and;
an energy management schema program operating on the data processor to manage an instantaneous voltage conversion setting corresponding with providing a desired DC output voltage at each of the plurality of output device ports wherein the desired output voltage is matched with the load operating voltage of a DC power load electrically interfaced therewith.
2. The power distribution and control module of claim 1 wherein the DC power source comprises one of a DC power supply, DC power generator, an electrochemical energy storage device and the DC power load corresponding with each output device port comprises any one of a DC power load and a rechargeable electrochemical energy storage device.
3. The power distribution and control module of claim 2 wherein the energy management schema is further operable to manage an instantaneous current conversion setting corresponding with providing a desired DC output current amplitude at each of the plurality of output device ports wherein the desired output current amplitude can be independently varied at the output terminal of each of the plurality of DC to DC power converters.
4. The power distribution and control module of claim 3 further comprising a Power Point Tracking (PPT) program module operating on the data processor configured to determine a peak power operating point while incrementally varying output current amplitude over a range on a selected one of the plurality of DC to DC power converters and thereafter fixing the peak power operating point by setting a current conversion setting corresponding with selected one of the plurality of DC to DC power converters to the output current amplitude corresponding with the peak power operating point.
5. The power distribution and control module of claim 1 further comprising:
a communication interface device in communication with the data processor;
a communication channel extending between the communication interface device and each of the input device port, the plurality of output device ports;
wherein the energy management schema operates to communicate with each device port over the communication channel to determine if a DC power source is interfaced with the input device port and if so to determine power characteristics of the DC power source and to determine if a DC power load is interfaced with each plurality of output device ports and if so to determine power characteristics corresponding with each DC power load.
6. The power distribution and control module of claim 4 wherein at least one of the plurality output device ports is interfaced with a rechargeable DC battery further comprising a battery charging manager program operating on the digital processor, wherein the battery charging manager program operates to allocate low power amplitude signals to the rechargeable DC battery.