Achieve Energy-Efficient, Compact, High-Current Inductors
Over the past few years the need for soft magnetic materials that can handle higher currents 100 - 300 amps and higher and maintain inductance has increased. Applications for high current inductors include Solar Power Conversion, UPS systems, Hybrid & Electric Vehicles, Wind Power Conversion, Transportation, Three-phase chokes and Large output chokes.
Magnetics has found that on many high-current applications, the limiting factor was not necessarily the ability of the material to provide enough inductance at DC Bias, it was the ability to fit in enough turns of the heavy wire or foil to provide the necessary inductance. To address that need, Magnetics tooled up a family of larger shapes that are able to accommodate larger wire sizes and amounts of wire.
Powder Cores for High Current Applications
Kool Mu/XFLUX Toroids - 62, 74, 102, 133, 165 mm
Kool Mu E and U Cores - 65 -160 mm
Kool Mu and XFLUX Blocks - Create custom shapes
Examining the various constraints; frequency of operation, allowable temperature rise, cost, size and weight, geometry, and conductor type; can direct a designer to one material being better than the other materials.
The table below is a comparison of the distributed gap powder core materials that are available to construct inductors.
For design examples from 50 - 300 Amps that compare cost and efficiency of the popular powder materials in powder inductor applications, please refer to Magnetics Technical Sales Manager Donna Kepcia's presentation
Designs for High Current Applications.
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