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'Neo' Magnets Raise the Efficiency of Electric Motors

Een engelstalig artikel van Anthony C. Morcos en Peter Campbell in het blad Auto Technology (nummer 2 2002, blz. 2-3).

Higher-efficiency motors reduce the load on the alternator and improve a car’s fuel economy. Neodynium-iron-boron magnets are shown to provide these benefits to key electric motors in the vehicle.

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High-Efficiency Motors for Airconditioner Compressors

Een Engelstalig artikel van Hitoshi Kawaguchi en Tomoaki Oikawa over airconditioner pm-compressoren met hoge efficiëntie uit het blad Technical Reports (september 2003, blz. 5 - 7).

Although induction motors are used as the source of motive power in a variety of equipment used in the home because of their durability, quietness, and low cost, they are increasingly being replaced by high-efficiency brushless DC motors due to increased environmental concerns. In particular, because the power consumed by air conditioners and refrigerators accounts for some 40 percent of household power consumption, brushless DC motors are being used in both of these appliances.
This article describes the efficiency-enhancing technologies in brushless DC motors for room air-conditioner compressors developed and implemented by Mitsubishi Electric Corporation.

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Permanentmagnet-motoren brauchen kein Getriebe

Een duitstalig artikel van Jouni Ikäheimo uit het blad ABB Technik (nr. 4 2002).

Jahrzehntelang wurde der Permanentmagnetmotor für Anwendungen mit hoher Drehzahl verwendet. Beispielsweise in der Computerindustrie, wo er wegen seines günstigen Leistungsgewichts besondere Vorteile bietet. Inzwischen hat ABB den Motor dahingehend weiterentwickelt, dass er auch in industriellen Anwendungen mit hohem Drehmomentbedarf bei niedriger Drehzahl eine hohe Genauigkeit und Betriebssicherheit gewährleistet. Dank dieser neuen Permanentmagnet-technik braucht der Motor in zahlreichen Branchen kein Getriebe mehr. Als erstes Einsatzgebiet wird die Papierindustrie ins Auge gefasst, weil für Papiermaschinen genaue, niedertourige Antriebe in großen Stückzahlen gebraucht werden.

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Axifus

Onderzoeksbureau Vito geeft een beschrijving van de Axifus pm-generator.

AXIFUS is a disc or pancake axial flux permanent magnet generator with a U-shaped stator, which is specially designed to have a simple, light and robust construction with a high efficiency and a controlled output voltage over a wide speed range. Measurements on the prototype (see picture) show a maximum power output of about 4 kW by a speed of 3600 rpm and an active weight of 9.3 kg.

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The European Motor Challenge Programme

Een brochure van de Europese Commissie over het European Motor Challenge Programme.

The Motor Challenge Programme is a European voluntary programme promoted by the European Commission to aid companies in improving the energy efficiency of their electric Motor Driven Systems. The Challenge focuses on Electric Drives, Compressed Air, Fan and Pump Systems, for which it has been demonstrated that there exists a large technical and economic potential for energy savings.

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