Magnetic element in a non-saturated region in a transformer/inductor

Abstract

Single, multistage, and distributed magnetic switched and tank resonant power conversion systems can use a transformer with a magnetic element operating in a non-saturated region (NSME). The NSME provides superior protection to conducted lightning transients, superior thermal operating bandwidth, higher magnetizing efficiency, greater flux/power density potential and form factor flexibility when implemented with many circuit strategies, some of which are disclosed herein. Efficient energy storage and transfer is achieved by the optimized application of NSME. The use of efficient rectifying flyback management techniques protects switches and provides additional output. The preferred embodiment teaches against common theories of transformers and uses a NSME in the core.

1 . (canceled)  
   
   
       2 . A transformer comprising 
 a core;    a primary winding wrapped around the core;    at least one secondary winding wrapped around the core; and    wherein the core comprises at least one magnetic element operating in a non-saturated region (NSME).    
   
   
       3 . The transformer of  claim 2 , wherein said NSME further comprises a low permeability.  
   
   
       4 . The transformer of  claim 3 , wherein the NSME further comprises a mixture of 85% by weight of iron, 6% by weight of aluminum, and 9% by weight of silicon, thereby providing a wide thermal operating range for the magnetic element.  
   
   
       5 . The transformer of  claim 3 , wherein the low permeability has a range of one to 500 u.  
   
   
       6 . The transformer of  claim 5 , wherein the NSME is an air magnetic element.  
   
   
       7 . The transformer of  claim 2 , wherein the NSME further comprises a B-H curve characteristic ranging from B=1 to 10,000 gauss and H=1 to 100 oersteds.  
   
   
       8 . A transformer comprising: 
 a primary winding surrounding a plurality of core elements;    a secondary winding wrapped around a member of the plurality of core elements; and    wherein at least one core element comprises a magnetic element operating in a non-saturated region (NSME).    
   
   
       9 . The transformer of  claim 8 , wherein said NSME further comprises a low permeability.  
   
   
       10 . The transformer of  claim 9 , where in the NSME further comprises a mixture of 85% by weight of iron, 6% by weight of aluminum, and 9% by weight of silicon, thereby providing a wide thermal operating range for the magnetic element.  
   
   
       11 . The transformer of  claim 9 , wherein the low permeability has a range of one to 500 u.  
   
   
       12 . The transformer of  claim 11 , wherein the NSME is an air magnetic element.  
   
   
       13 . The transformer of  claim 8 , wherein the NSME further comprises a B-H curve characteristic ranging from B=1 to 10,000 gauss and H=1 to 100 oersteds.  
   
   
       14 .- 30 . (canceled)