Inverters are widely used to generate alternating current from direct current sources like batteries. As renewable energy sources emerge for automotive and other applications, the need for high-energy storage chokes has increased. Earlier improvements did not solve problems like high losses and the exacting requirements of processing steps. The Spanish inductive component maker Premo Group claims to come up with a better solution for high-energy storage chokes used in inverter applications by improving efficiency, reducing size and lowering component costs.