Increase the productivity with clean power Comply with EMC / Harmonics standards and increase motor life time 01/2014 EN Headquarters, global innovation and development center Schaffner Group Nordstrasse 11 4542 Luterbach Switzerland T +41 32 681 66 26 F +41 32 681 66 30 info@schaffner.com www.schaffner.com Sales and application centers China Schaffner EMC Ltd. Shanghai T20-3, No 565 Chuangye Road Pudong New Area Shanghai 201201 T +86 21 3813 9500 F +86 21 3813 9501 / 02 cschina@schaffner.com www.schaffner.com Finland Schaffner Oy Sauvonrinne 19 H 08500 Lohja T +358 19 35 72 71 F +358 19 32 66 10 finlandsales@schaffner.com France Schaffner EMC S.A.S. 112, Quai de Bezons 95103 Argenteuil T +33 1 34 34 30 60 F +33 1 39 47 02 28 francesales@schaffner.com Germany Schaffner Deutschland GmbH Schoemperlenstrasse 12B 76185 Karlsruhe T +49 721 56910 F +49 721 569110 germanysales@schaffner.com Italy Schaffner EMC S.r.l. 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Box 14 Lamphun 51000 T +66 53 58 11 04 F +66 53 58 10 19 thailandsales@schaffner.com UK Schaffner Ltd. 5 Ashville Way Molly Millars Lane Wokingham Berkshire RG41 2PL T +44 118 9770070 F +44 118 9792969 uksales@schaffner.com www.schaffner.uk.com USA Schaffner EMC Inc. 52 Mayfield Avenue Edison, New Jersey 08837 T +1 732 225 9533 F +1 732 225 4789 usasales@schaffner.com www.schaffner.com/us To find your local partner within Schaffner‘s global network, please go to www.schaffner.com Merkur Druck AG January 2014 © 2014 Schaffner Group This document has been carefully checked. However, Schaffner does not assume any liability for errors or inaccuracies. Published specifications are subject to change without notice. Product suitability for an area of application must ultimately be determined by the customer. In all cases, products must never be operated outside their published specifications. Schaffner does not guarantee the availability of all published products. Latest publica- tions and a complete disclaimer can be downloaded from the Schaffner website. All trademarks recognized. Total solutions for motor drive systems Motor drive applications Schaffner Group A global one-stop shop EMC/EMI filters – PCB filters – IEC inlet filters / Power entry modules – DC filters – Single-phase filters – Three-phase filters – Three-phase + neutral line filters – Open frame filters EMC/EMI chokes Feedthrough filters and capacitors Automotive components Customized solutions Power Quality products – Line reactors – dv/dt reactors and filters – Sine wave filters – Harmonic filters – Regen reactors and filters – Transformers Customized solutions The Schaffner Group is the international leader in development and production of solutions which ensure efficient and reliable operation of electronic systems. The Group’s broad range of product and services includes EMC/EMI components, harmonic filters and magnetic components as well as development and implementation of customized solutions. Schaffner components are de- ployed in energy-efficient drive systems and electronic motor controls, in wind and photovoltaic systems, rail technology, machi- ne tools and robotics as well as power supplies for numerous electronic devices in sectors such as medical technology or telecommunications. Schaffner provides on-site service to customers around the world through an efficient, global organization and makes ongoing investments in research, development, production and sales to systematically expand its position as leader on the international market. Frequency inverters, also called variable frequency drives VFD’s, are among the most widely used pieces of equip- ment for AC motor control. Nowadays, they are used in virtually every area of industrial and domestic installa- tions; in applications as diverse as pumps, air conditioning systems, elevators and cranes, conveyors, machine tools, alternative energy production and in a vast array of other energy saving applications. VFD semiconductor power structures can be made in different AC-AC, DC-AC or AC-DC topologies and therefore can be applied as PV-, Wind-, UPS- or other converter creating similar interference issues as within motor drive systems. Problems associated with modern drives In the quest for ultra-compact, efficient power conversion, inverter and converter manufacturers employ high speed semiconductor switches and pulse width modulation (PWM) techniques to generate fast risetime voltage pulses. Unfortunately, this creates a considerable number of problems from purely functional difficulties to most severe motor damage. Following, a brief summary of the most significant problems and phenomena: Inverter input I EMC and EMI problems I Inrush and peak currents I Harmonics I Low frequency interference phenomena I Commutation notches I Grid problems with regenerative drives Inverter output I Excessive dv/dt I Motor bearing currents I Peak- and overvoltages I Additional pulse loads on the inverter I Parasitic earth currents I Acoustic motor noise I Eddy current losses in the motor I EMC problems I Displacement currents Inverter DC link I DC link capacitor stress I DC link overvoltage and other problems I Harmonics Whole system I Low efficiency I Uncertain system immunity I Low power factor I Increased leakage currents I Unacceptable interference emissions I Uncertain service security and reliability Solutions from Schaffner In most cases, several phenomena occur in the same system, a fact which underlines the importance of combin- ing filter components to a total solution. In order to reduce the overall suppression and mitigation effort and costs associated with, a careful investigation of the equipment can be provided and be solved by Schaffner with following cost efficient solutions: I EMI/RFI input filters I Motor protection chokes I RFI suppression chokes I dv/dt filters I Harmonics filters/chokes I Sinusoidal output filters I Line reactors I “Sinus Plus” filters I Commutation reactors I LC and LCL filter I Special components for I Low leakage current RFI filter energy regeneration The decision to favor a certain solution above another depends entirely on the system requirements and should always be backed by a technical and economic analysis. Advanced testing capabilities To ensure that our components work properly in the final equipment, Schaffner operates a full load test setup for motor drives. With the unique ability to test every drive with various loads and cable lengths, switching frequencies and envi- ronmental conditions, we are able to serve our customers with the most reliable and cost-effective solutions. Benefit from more than 50 years of experience Schaffner can help you to ensure: I EMC and harmonics compliance I Operation and production improvements I System reliability and efficiency I Functional security and sustainability To obtain more detailed information please contact your local Schaffner sales office, distributor or www. schaffner.com. Note: motor drives are used as a typical example; Schaffner is also active in numerous other areas, such as PV in- verter, wind converter and other power electronic devices.