New development from SMP:

EMC filter with high frequency stability – compact, quiet, versatile

Graben-Neudorf, Germany, May 2018. SMP Sintermetalle Prometheus GmbH & Co KG (SMP), manufacturer of soft-magnetic materials, inductive components and filter systems, presents EMC filters with high frequency stability for power electronic applications. The materials have been developed by SMP especially for this application and are now effective for frequencies up to the gigaHertz range. The new EMC filters will be exhibited alongside the familiar inductive components at this year’s PCIM in Nuremberg, Germany.


EMC filters reduce interference currents in power converter systems ...

... which are generated by parasitic effects and cyclic elements of the system. The material plays an important part in this: the target is to achieve stable inductance over the entire frequency spectrum in order to maximise interference suppression. Compared with standard technologies which use materials such as ferrite, electrical steel sheets and nanocrystalline metal sheets, interference levels with the new EMC filters from SMP are as much as 40 dB[µV] (decibel microvolt) lower. The SMP filters are compact, up to 30 percent lighter, and noiseless because they are made from magnetostriction-free materials. The overall efficiency of the system is improved due to very low losses through the materials. Moreover, fewer filter components are needed, so volume is reduced and the cost effectiveness of the power electronic system as a whole is increased substantially. The filters can be manufactured with single or magnetically coupled chokes, and so offer a choice for reducing common mode and differential mode interference.

SMP specialises in customer-specific development and manufacture of filter systems and inductive components. The component portfolio is designed for currents of up to 2000 A, up to 3000 A for special applications, and for frequencies up to the gigaHertz range. The materials have been developed and manufactured by SMP specifically for this purpose and have high saturation induction of up to 2 Tesla. The individual components can be produced with dimensions from 19 mm to 300 mm and weights from 0.05 kg to 130 kg. The temperature class H (up to 180 °C) insulation system is UL certified. Depending on the application, protection ratings up to IP66 are available. HL classes according to EN 45545 can be specified according to requirements.

The filter systems and inductive components are used in industrial applications in the power electronics, automation and signal processing sectors, in drive applications for railway engineering, electromobility and marine engineering among others, in medical technology, renewable energies and power supply and in the aerospace industry.

SMP presents: PCIM Europe 2018, the trade fair for power electronics, intelligent drive technology, renewable energy and energy management, from 5 to 7 June 2018, Nuremberg: Hall 6, Stand 308

SMP Sintermetalle Prometheus GmbH & Co KG
Ottostraße 4
76676 Graben-Neudorf, Germany
Tel: 07255 716 0
Fax: 07255 716 160

PR Contact: 
TPR International
Christiane Tupac-Yupanqui
Postfach 11 40
82133 Olching, Germany
Tel: 08142 44 82 301