High efficiency lighting system

Abstract

A high efficiency lighting system maintains normal lighting conditions by lighting fixtures requiring DC electrical power. A power control device receives AC electrical power from a public utility converts AC power to DC power and delivers low voltage DC electrical power to lighting fixtures. A standby battery is provided to maintain power during power outages. Optionally, a photovoltaic DC electrical power source may be connected to the power control device, to provide alternate DC electrical power. In a further embodiment, a gas driven cogenerator unit may supply DC electrical power.

1 . A power sharing system in a DC load environment comprising: 
 a primary source of DC;    an alternative primary source of DC;    a power controller capable of inputting voltage regulated DC power simultaneously from said primary sources, said alternative primary source of DC making a shared contribution of power selected by said power controller, and having a power junction means for delivering a regulated voltage DC to at least one DC compatible load at an output of said power sharing system;    said power controller controlling supply side power sharing to a DC load side;    said power controller producing voltage regulated power controlling response of said alternative primary source of DC power; and,    said power controller capable of altering the input voltages of said power junction means for directing power from said alternate primary source of DC power to limit peak power supplied from said primary source of DC power to said at least one DC compatible load in accordance with a pre-set threshold profile from said primary source of DC power in order to minimize cost of energy.    
   
   
       2 . The power system of  claim 1  wherein said DC compatible load is a lighting system.  
   
   
       3 . The power system of  claim 1  wherein said alternative primary source of DC power is an energy storage medium.  
   
   
       4 . The power system of  claim 1  wherein said alternative primary source of DC is a photo voltaic energy source.  
   
   
       5 . The power system of  claim 1  wherein said alternative primary source of DC is a cogenerator.  
   
   
       6 . The power system of  claim 1  wherein said alternative primary source of DC is a wind energy/electric energy conversion system.  
   
   
       7 . The power system as in  claim 1  in which said power controller contains circuitry for providing power to said at least one DC compatible load from said alternative primary source of DC in the absence of power from said primary source of DC.  
   
   
       8 . A power controller for use in a high efficiency lighting system for maintaining normal lighting conditions through lighting fixtures requiring DC electrical power comprising: 
 a connection for receiving DC electrical power from a primary DC source and an output connection for delivering required DC electrical power to said lighting fixtures;    a power controller capable of converting and outputting voltage regulated DC power simultaneously from said primary DC source, at least one alternative source of DC power making a shared contribution of power selected by said power controller, said controller influencing the amount of power coming from each respective source by adjusting the DC    output voltage of each respective source directed to a power junction means for delivering said required DC electrical power to said lighting fixtures at an output of said power sharing system;    said power controller voltage influencing the proportion of power coming from multiple sources to said lighting fixtures;    a power controller delivering said required DC electrical power from said at least one alternate source of DC to said lighting fixtures during an AC electrical power outage to maintain without interruption normal lighting by said lighting fixtures.    
   
   
       9 . A power sharing system in a DC load environment comprising: 
 a first primary source of DC;    a second primary source of DC;    a power controller for inputting voltage regulated DC power simultaneously from said first and second primary sources to a power junction means;    said power junction means delivering a regulated voltage DC to at least one DC compatible load as an output of said power sharing system;    said power controller controlling and managing supply side power sharing to said power junction means; and    said power controller altering input voltages from said first and second primary sources of DC power to said power junction means to limit peak power supplied from said first primary source of DC power to said power junction means in accordance with a pre-set threshold profile from said first primary source of DC power in order to minimize cost of energy.    
   
   
       10 . The power system of  claim 9  wherein said DC compatible load is a lighting system.  
   
   
       11 . The power system of  claim 9  wherein said second primary source of DC power is a wind energy/electric energy conversion system. (I can't find support for the fuel cell)  
   
   
       12 . The power system of  claim 9  wherein said second primary source of DC is a photo voltaic energy source.  
   
   
       13 . The power system of  claim 9  wherein said first primary source of DC is a cogenerator.  
   
   
       14 . The power system as in  claim 9  in which said power controller contains circuitry for providing power to said at least one DC compatible load from said second primary source of DC in the absence of power from said first primary source of DC.  
   
   
       15 . The power system of  claim 9  having means for storing electricity for use when there is a loss of electrical power from said primary power sources.