Chokes for solar power inverters achieve high efficiency

SMP (Sintermetalle Prometheus) announces chokes for solar power inverters. The new chokes are compact and low-loss with low stray fields, which facilitates impressive inverter efficiency.

The chokes’ cores consist of powder composites with low magnetostriction, which SMP engineers for each application. With the low eddy current and hysteresis losses of these materials, the chokes allow the construction of exceptionally efficient inverters. An encapsulated design ensures that they emit only low-intensity stray fields, so that they do not affect other components within the inverter. Compact choke design is another important aspect, as SMP’s chokes occupy 25% less space than conventional designs. Extremely quiet in operation, inverters with these chokes can also be used in residential areas.

SMP chokes can be produced for frequencies to 200 kHz and currents to 1,000 amperes. Sizes range from 36 to 300 mm in diameter and weight ranges from 50 to 130 kg. Depending on their application, degrees of protections to IP66 are available. Chokes can be used in temperatures to 180° C. All components are RoHS and REACH-compliant and use UL-listed materials. Beside solar power inverters, SMP’s inductive components are used in transformers for wind turbines, in railway engineering and medical engineering, and in drives and power electronics.

For more information, contact SMP's U.S. distributor, Westendorf Associates Inc., 525 E. Vine St., Milwaukee, WI 53212. Phone: (414) 380-9730.